{% extends "shared/frontend/base.html" %}

{% block title %}Kassekladde - BMC Hub{% endblock %}

{% block extra_css %}
<style>
    .stat-card {
        text-align: center;
        padding: 1.5rem;
    }

    .stat-card h3 {
        font-size: 2rem;
        font-weight: 700;
        margin-bottom: 0;
    }

    .stat-card p {
        color: var(--text-secondary);
        font-size: 0.9rem;
        margin-bottom: 0;
    }

    .stat-card.overdue h3 { color: var(--danger); }
    .stat-card.due-soon h3 { color: var(--warning); }
    .stat-card.pending h3 { color: var(--accent); }
    .stat-card.total h3 { color: var(--text-secondary); }

    .badge {
        padding: 0.4rem 0.8rem;
        border-radius: 6px;
        font-weight: 500;
    }

    .status-pending { background-color: #ffc107; color: #000; }
    .status-approved { background-color: #17a2b8; color: #fff; }
    .status-sent { background-color: var(--success); color: #fff; }
    .status-paid { background-color: #6c757d; color: #fff; }
    .status-overdue { background-color: var(--danger); color: #fff; }
    .status-unpaid { background-color: #ffc107; color: #000; }

    .line-item {
        background: var(--accent-light);
        padding: 1rem;
        border-radius: 8px;
        margin-bottom: 0.5rem;
    }

    .filter-pills {
        display: flex;
        gap: 0.5rem;
        flex-wrap: wrap;
        margin-bottom: 1rem;
    }

    .filter-pill {
        padding: 0.5rem 1rem;
        border-radius: 20px;
        border: 1px solid #dee2e6;
        background: var(--bg-card);
        cursor: pointer;
        transition: all 0.2s;
        font-size: 0.9rem;
    }

    .filter-pill:hover, .filter-pill.active {
        background: var(--accent);
        color: white;
        border-color: var(--accent);
    }

    /* Tab Navigation */
    .nav-tabs {
        border-bottom: 2px solid #dee2e6;
    }

    .nav-tabs .nav-link {
        color: var(--text-secondary);
        border: none;
        border-bottom: 3px solid transparent;
        padding: 0.75rem 1.5rem;
        font-weight: 500;
        transition: all 0.2s;
    }

    .nav-tabs .nav-link:hover {
        border-color: var(--accent-light);
        color: var(--accent);
    }

    .nav-tabs .nav-link.active {
        color: var(--accent);
        border-bottom-color: var(--accent);
        background: none;
    }

    /* Pending Files Status Badges */
    .status-ai_extracted { background-color: #17a2b8; color: #fff; }
    .status-processing { background-color: #6c757d; color: #fff; }
    .status-failed { background-color: var(--danger); color: #fff; }
    .status-completed { background-color: var(--success); color: #fff; }
</style>
{% endblock %}

{% block content %}
    <!-- Page Header -->
    <div class="d-flex justify-content-between align-items-center mb-4">
        <div>
            <h2 class="mb-1">📋 Leverandørfakturaer</h2>
            <p class="text-muted mb-0">Kassekladde - Integration med e-conomic</p>
        </div>
        <div>
            <a href="/billing/templates" class="btn btn-outline-secondary me-2">
                <i class="bi bi-grid-3x3 me-2"></i>Se Templates
            </a>
            <a href="/billing/template-builder" class="btn btn-outline-primary me-2">
                <i class="bi bi-puzzle me-2"></i>Template Builder
            </a>
            <button class="btn btn-success" onclick="openUploadModal()">
                <i class="bi bi-cloud-upload me-2"></i>Upload Faktura
            </button>
        </div>
    </div>

    <!-- Statistics Cards -->
    <div class="row mb-4" id="statsCards">
        <div class="col-md-3">
            <div class="card stat-card overdue">
                <h3 id="statOverdueCount">-</h3>
                <p>Overskredet</p>
                <small class="text-muted" id="statOverdueAmount">-</small>
            </div>
        </div>
        <div class="col-md-3">
            <div class="card stat-card due-soon">
                <h3 id="statDueSoonCount">-</h3>
                <p>Forfald inden 7 dage</p>
                <small class="text-muted" id="statDueSoonAmount">-</small>
            </div>
        </div>
        <div class="col-md-3">
            <div class="card stat-card pending">
                <h3 id="statPendingCount">-</h3>
                <p>Afventer behandling</p>
                <small class="text-muted" id="statPendingAmount">-</small>
            </div>
        </div>
        <div class="col-md-3">
            <div class="card stat-card total">
                <h3 id="statTotalCount">-</h3>
                <p>Ubetalt i alt</p>
                <small class="text-muted" id="statUnpaidAmount">-</small>
            </div>
        </div>
    </div>

    <!-- Tab Navigation -->
    <ul class="nav nav-tabs mb-4" id="mainTabs">
        <li class="nav-item">
            <a class="nav-link active" id="invoices-tab" data-bs-toggle="tab" href="#invoices-content" onclick="switchToInvoicesTab()">
                <i class="bi bi-receipt me-2"></i>Fakturaer
            </a>
        </li>
        <li class="nav-item">
            <a class="nav-link" id="pending-files-tab" data-bs-toggle="tab" href="#pending-files-content" onclick="switchToPendingFilesTab()">
                <i class="bi bi-cloud-upload me-2"></i>Uploadede Filer
                <span class="badge bg-warning text-dark ms-2" id="pendingFilesCount" style="display: none;">0</span>
            </a>
        </li>
    </ul>

    <!-- Tab Content -->
    <div class="tab-content" id="mainTabContent">
        
        <!-- Invoices Tab -->
        <div class="tab-pane fade show active" id="invoices-content">
            
            <!-- Filters -->
            <div class="card mb-4">
                <div class="card-body">
                    <div class="filter-pills">
                        <div class="filter-pill active" data-filter="all" onclick="applyFilter('all', this)">
                            <i class="bi bi-list-ul me-1"></i>Alle
                        </div>
                        <div class="filter-pill" data-filter="pending" onclick="applyFilter('pending', this)">
                            <i class="bi bi-clock me-1"></i>Afventer
                        </div>
                        <div class="filter-pill" data-filter="approved" onclick="applyFilter('approved', this)">
                            <i class="bi bi-check-circle me-1"></i>Godkendt
                        </div>
                        <div class="filter-pill" data-filter="sent_to_economic" onclick="applyFilter('sent_to_economic', this)">
                            <i class="bi bi-send me-1"></i>Sendt til e-conomic
                        </div>
                        <div class="filter-pill" data-filter="overdue" onclick="applyFilter('overdue', this)">
                            <i class="bi bi-exclamation-triangle me-1"></i>Overskredet
                        </div>
                    </div>
                </div>
            </div>

            <!-- Invoices Table -->
            <div class="card">
                <div class="card-body">
                    <div class="table-responsive">
                        <table class="table table-hover">
                            <thead>
                                <tr>
                                    <th>Fakturanr.</th>
                                    <th>Leverandør</th>
                                    <th>Fakturadato</th>
                                    <th>Forfaldsdato</th>
                                    <th>Beløb</th>
                                    <th>Status</th>
                                    <th>e-conomic</th>
                                    <th>Handlinger</th>
                                </tr>
                            </thead>
                            <tbody id="invoicesTable">
                                <tr>
                                    <td colspan="8" class="text-center py-4">
                                        <div class="spinner-border text-primary" role="status">
                                            <span class="visually-hidden">Indlæser...</span>
                                        </div>
                                    </td>
                                </tr>
                            </tbody>
                        </table>
                    </div>
                </div>
            </div>
            
        </div>

        <!-- Pending Files Tab -->
        <div class="tab-pane fade" id="pending-files-content">
            
            <!-- Pending Files Table -->
            <div class="card">
                <div class="card-body">
                    <div class="d-flex justify-content-between align-items-center mb-3">
                        <h5 class="mb-0">📁 Uploadede filer afventer behandling</h5>
                        <button class="btn btn-sm btn-outline-primary" onclick="loadPendingFiles()">
                            <i class="bi bi-arrow-clockwise me-2"></i>Opdater
                        </button>
                    </div>
                    <div class="table-responsive">
                        <table class="table table-hover">
                            <thead>
                                <tr>
                                    <th>Filnavn</th>
                                    <th>Upload Dato</th>
                                    <th>Status</th>
                                    <th>Leverandør</th>
                                    <th>Template</th>
                                    <th>Handlinger</th>
                                </tr>
                            </thead>
                            <tbody id="pendingFilesTable">
                                <tr>
                                    <td colspan="5" class="text-center py-4">
                                        <div class="spinner-border text-primary" role="status">
                                            <span class="visually-hidden">Indlæser...</span>
                                        </div>
                                    </td>
                                </tr>
                            </tbody>
                        </table>
                    </div>
                </div>
            </div>
            
        </div>
        
    </div>
</div>

<!-- Create/Edit Invoice Modal -->
<div class="modal fade" id="invoiceModal" tabindex="-1">
    <div class="modal-dialog modal-lg">
        <div class="modal-content">
            <div class="modal-header">
                <h5 class="modal-title">Ny Leverandørfaktura</h5>
                <button type="button" class="btn-close" data-bs-dismiss="modal"></button>
            </div>
            <div class="modal-body">
                <form id="invoiceForm">
                    <input type="hidden" id="invoiceId">
                    
                    <div class="row mb-3">
                        <div class="col-md-6">
                            <label class="form-label">Fakturanummer *</label>
                            <input type="text" class="form-control" id="invoiceNumber" required>
                        </div>
                        <div class="col-md-6">
                            <label class="form-label">Leverandør *</label>
                            <select class="form-select" id="vendorId" required>
                                <option value="">Vælg leverandør...</option>
                            </select>
                        </div>
                    </div>

                    <div class="row mb-3">
                        <div class="col-md-6">
                            <label class="form-label">Fakturadato *</label>
                            <input type="date" class="form-control" id="invoiceDate" required>
                        </div>
                        <div class="col-md-6">
                            <label class="form-label">Forfaldsdato</label>
                            <input type="date" class="form-control" id="dueDate">
                        </div>
                    </div>

                    <div class="row mb-3">
                        <div class="col-md-4">
                            <label class="form-label">Total beløb (inkl. moms) *</label>
                            <input type="number" step="0.01" class="form-control" id="totalAmount" required>
                        </div>
                        <div class="col-md-4">
                            <label class="form-label">Moms beløb</label>
                            <input type="number" step="0.01" class="form-control" id="vatAmount">
                        </div>
                        <div class="col-md-4">
                            <label class="form-label">Valuta</label>
                            <select class="form-select" id="currency">
                                <option value="DKK" selected>DKK</option>
                                <option value="EUR">EUR</option>
                                <option value="USD">USD</option>
                            </select>
                        </div>
                    </div>

                    <div class="mb-3">
                        <label class="form-label">Beskrivelse</label>
                        <textarea class="form-control" id="description" rows="3"></textarea>
                    </div>

                    <div class="mb-3">
                        <label class="form-label">Noter (interne)</label>
                        <textarea class="form-control" id="notes" rows="2"></textarea>
                    </div>

                    <!-- Line Items -->
                    <div class="mb-3">
                        <div class="d-flex justify-content-between align-items-center mb-2">
                            <label class="form-label mb-0">Linjer</label>
                            <button type="button" class="btn btn-sm btn-outline-primary" onclick="addLine()">
                                <i class="bi bi-plus-circle me-1"></i>Tilføj linje
                            </button>
                        </div>
                        <div id="lineItems">
                            <!-- Lines will be added dynamically -->
                        </div>
                    </div>
                </form>
            </div>
            <div class="modal-footer">
                <button type="button" class="btn btn-secondary" data-bs-dismiss="modal">Annuller</button>
                <button type="button" class="btn btn-primary" onclick="saveInvoice()">Gem</button>
            </div>
        </div>
    </div>
</div>

<!-- View Invoice Details Modal -->
<div class="modal fade" id="viewInvoiceModal" tabindex="-1">
    <div class="modal-dialog modal-lg">
        <div class="modal-content">
            <div class="modal-header">
                <h5 class="modal-title">Fakturadetaljer</h5>
                <button type="button" class="btn-close" data-bs-dismiss="modal"></button>
            </div>
            <div class="modal-body" id="invoiceDetails">
                <!-- Details will be loaded dynamically -->
            </div>
            <div class="modal-footer">
                <button type="button" class="btn btn-secondary" data-bs-dismiss="modal">Luk</button>
                <button type="button" class="btn btn-success" id="approveBtn" onclick="approveInvoice()">
                    <i class="bi bi-check-circle me-1"></i>Godkend
                </button>
                <button type="button" class="btn btn-primary" id="sendToEconomicBtn" onclick="sendToEconomic()">
                    <i class="bi bi-send me-1"></i>Send til e-conomic
                </button>
            </div>
        </div>
    </div>
</div>

<!-- Upload Invoice Modal -->
<div class="modal fade" id="uploadModal" tabindex="-1">
    <div class="modal-dialog modal-lg">
        <div class="modal-content">
            <div class="modal-header">
                <h5 class="modal-title"><i class="bi bi-cloud-upload me-2"></i>Upload Leverandørfaktura</h5>
                <button type="button" class="btn-close" data-bs-dismiss="modal"></button>
            </div>
            <div class="modal-body">
                <div class="alert alert-info">
                    <i class="bi bi-info-circle me-2"></i>
                    <strong>AI-Analyse:</strong> Systemet vil automatisk udtrække fakturadata (CVR, beløb, linjer) fra PDF/billede via AI.
                    Leverandør matches automatisk via CVR nummer.
                </div>

                <form id="uploadForm" enctype="multipart/form-data">
                    <div class="mb-3">
                        <label class="form-label">Vælg filer (PDF, PNG, JPG) *</label>
                        <input type="file" class="form-control" id="fileInput" accept=".pdf,.png,.jpg,.jpeg" multiple required>
                        <div class="form-text">Max 50 MB pr. fil. Vælg flere filer med Cmd/Ctrl. AI vil udtrække CVR, fakturanummer, beløb og linjer.</div>
                        <div id="fileCount" class="mt-2 text-muted small"></div>
                    </div>

                    <!-- Upload Progress -->
                    <div id="uploadProgress" class="d-none mb-3">
                        <div class="progress">
                            <div class="progress-bar progress-bar-striped progress-bar-animated" 
                                 role="progressbar" style="width: 0%" id="progressBar"></div>
                        </div>
                        <div class="text-center mt-2" id="progressText">Uploader...</div>
                    </div>

                    <!-- Upload Result -->
                    <div id="uploadResult" class="d-none">
                        <!-- Will show success/error/duplicate alerts -->
                    </div>
                </form>
            </div>
            <div class="modal-footer">
                <button type="button" class="btn btn-secondary" data-bs-dismiss="modal">Annuller</button>
                <button type="button" class="btn btn-success" onclick="uploadInvoice()" id="uploadBtn">
                    <i class="bi bi-cloud-upload me-2"></i>Upload & Analyser
                </button>
            </div>
        </div>
    </div>
</div>

<!-- Review Extracted Data Modal -->
<div class="modal fade" id="reviewExtractedDataModal" tabindex="-1">
    <div class="modal-dialog modal-xl">
        <div class="modal-content">
            <div class="modal-header">
                <h5 class="modal-title"><i class="bi bi-search me-2"></i>Gennemse Udtrukne Data</h5>
                <button type="button" class="btn-close" data-bs-dismiss="modal"></button>
            </div>
            <div class="modal-body" id="reviewModalContent">
                <div class="text-center py-4">
                    <div class="spinner-border text-primary" role="status">
                        <span class="visually-hidden">Indlæser...</span>
                    </div>
                </div>
            </div>
            <div class="modal-footer">
                <input type="hidden" id="reviewModalFileId">
                <button type="button" class="btn btn-warning" onclick="reprocessFromModal()">
                    <i class="bi bi-arrow-clockwise me-2"></i>Genbehandle
                </button>
                <button type="button" class="btn btn-secondary" data-bs-dismiss="modal">Luk</button>
                <button type="button" class="btn btn-primary" onclick="openManualEntryMode()">
                    <i class="bi bi-pencil me-2"></i>Manuel Indtastning
                </button>
                <button type="button" class="btn btn-success" onclick="createInvoiceFromExtraction()">
                    <i class="bi bi-check-circle me-2"></i>Opret Faktura
                </button>
            </div>
        </div>
    </div>
</div>

<!-- Manual Entry Modal -->
<div class="modal fade" id="manualEntryModal" tabindex="-1">
    <div class="modal-dialog modal-xl">
        <div class="modal-content">
            <div class="modal-header">
                <h5 class="modal-title"><i class="bi bi-pencil-square me-2"></i>Manuel Indtastning af Faktura</h5>
                <button type="button" class="btn-close" data-bs-dismiss="modal"></button>
            </div>
            <div class="modal-body">
                <input type="hidden" id="manualEntryFileId">
                
                <div class="row">
                    <!-- Left: PDF Viewer -->
                    <div class="col-md-6">
                        <h6 class="mb-3">PDF Dokument</h6>
                        <div style="border: 1px solid #ddd; border-radius: 4px; height: 600px; overflow: hidden;">
                            <iframe id="manualEntryPdfViewer" type="application/pdf" width="100%" height="100%" style="border: none;"></iframe>
                        </div>
                    </div>
                    
                    <!-- Right: Form -->
                    <div class="col-md-6">
                        <h6 class="mb-3">Faktura Detaljer</h6>
                        <form id="manualEntryForm">
                            <!-- Vendor Selection -->
                            <div class="mb-3">
                                <label class="form-label">Leverandør *</label>
                                <select class="form-select" id="manualVendorId" required>
                                    <option value="">Vælg leverandør...</option>
                                </select>
                                <button type="button" class="btn btn-sm btn-outline-primary mt-2" onclick="openCreateVendorInline()">
                                    <i class="bi bi-plus-circle me-1"></i>Opret ny leverandør
                                </button>
                            </div>
                            
                            <!-- Invoice Details -->
                            <div class="row mb-3">
                                <div class="col-md-6">
                                    <label class="form-label">Fakturanummer *</label>
                                    <input type="text" class="form-control" id="manualInvoiceNumber" required>
                                </div>
                                <div class="col-md-6">
                                    <label class="form-label">Type</label>
                                    <select class="form-select" id="manualInvoiceType">
                                        <option value="invoice">Faktura</option>
                                        <option value="credit_note">Kreditnota</option>
                                    </select>
                                </div>
                            </div>
                            
                            <div class="row mb-3">
                                <div class="col-md-6">
                                    <label class="form-label">Fakturadato *</label>
                                    <input type="date" class="form-control" id="manualInvoiceDate" required>
                                </div>
                                <div class="col-md-6">
                                    <label class="form-label">Forfaldsdato</label>
                                    <input type="date" class="form-control" id="manualDueDate">
                                </div>
                            </div>
                            
                            <div class="row mb-3">
                                <div class="col-md-6">
                                    <label class="form-label">Total Beløb *</label>
                                    <input type="number" step="0.01" class="form-control" id="manualTotalAmount" required>
                                </div>
                                <div class="col-md-6">
                                    <label class="form-label">Valuta</label>
                                    <select class="form-select" id="manualCurrency">
                                        <option value="DKK">DKK</option>
                                        <option value="EUR">EUR</option>
                                        <option value="USD">USD</option>
                                    </select>
                                </div>
                            </div>
                            
                            <!-- Line Items -->
                            <div class="mb-3">
                                <label class="form-label">Fakturalinjer</label>
                                <div class="alert alert-info py-2 px-3 mb-2" style="font-size: 0.875rem;">
                                    <strong>💡 Momskoder:</strong><br>
                                    <span class="badge bg-success me-2">I25</span> Standard 25% moms (køb med moms)<br>
                                    <span class="badge bg-warning text-dark me-2">I52</span> Omvendt betalingspligt (ingen moms - auto-detekteres fra "⚠️ OMVENDT BETALINGSPLIGT")
                                </div>
                                <div id="manualLineItems">
                                    <!-- Lines will be added here -->
                                </div>
                                <button type="button" class="btn btn-sm btn-outline-primary mt-2" onclick="addManualLine()">
                                    <i class="bi bi-plus-circle me-1"></i>Tilføj linje
                                </button>
                            </div>
                            
                            <div class="mb-3">
                                <label class="form-label">Noter</label>
                                <textarea class="form-control" id="manualNotes" rows="2"></textarea>
                            </div>
                        </form>
                    </div>
                </div>
            </div>
            <div class="modal-footer">
                <button type="button" class="btn btn-secondary" data-bs-dismiss="modal">Annuller</button>
                <button type="button" class="btn btn-success" onclick="saveManualInvoice()">
                    <i class="bi bi-save me-2"></i>Gem Faktura
                </button>
            </div>
        </div>
    </div>
</div>

<!-- Link/Create Vendor Modal -->
<div class="modal fade" id="linkVendorModal" tabindex="-1">
    <div class="modal-dialog">
        <div class="modal-content">
            <div class="modal-header">
                <h5 class="modal-title">Link eller Opret Leverandør</h5>
                <button type="button" class="btn-close" data-bs-dismiss="modal"></button>
            </div>
            <div class="modal-body">
                <input type="hidden" id="linkVendorFileId">
                <input type="hidden" id="linkVendorName">
                <input type="hidden" id="linkVendorCVR">
                
                <div class="alert alert-info">
                    <strong>Fundet leverandør:</strong><br>
                    Navn: <span id="linkVendorDisplayName"></span><br>
                    CVR: <span id="linkVendorDisplayCVR"></span>
                </div>
                
                <ul class="nav nav-tabs mb-3" role="tablist">
                    <li class="nav-item">
                        <button class="nav-link active" data-bs-toggle="tab" data-bs-target="#linkExisting">Link Eksisterende</button>
                    </li>
                    <li class="nav-item">
                        <button class="nav-link" data-bs-toggle="tab" data-bs-target="#createNew">Opret Ny</button>
                    </li>
                </ul>
                
                <div class="tab-content">
                    <!-- Link Existing -->
                    <div class="tab-pane fade show active" id="linkExisting">
                        <div class="mb-3">
                            <label class="form-label">Søg efter leverandør</label>
                            <input type="text" class="form-control" id="vendorSearchInput" placeholder="Søg navn eller CVR...">
                        </div>
                        <div id="vendorSearchResults" class="list-group" style="max-height: 300px; overflow-y: auto;">
                            <div class="text-center text-muted py-3">Søg for at finde leverandører</div>
                        </div>
                    </div>
                    
                    <!-- Create New -->
                    <div class="tab-pane fade" id="createNew">
                        <form id="createVendorForm">
                            <div class="mb-3">
                                <label class="form-label">Navn *</label>
                                <input type="text" class="form-control" id="newVendorName" required>
                            </div>
                            <div class="mb-3">
                                <label class="form-label">CVR Nummer</label>
                                <input type="text" class="form-control" id="newVendorCVR" maxlength="8">
                            </div>
                            <div class="mb-3">
                                <label class="form-label">Email</label>
                                <input type="email" class="form-control" id="newVendorEmail">
                            </div>
                            <div class="mb-3">
                                <label class="form-label">Telefon</label>
                                <input type="tel" class="form-control" id="newVendorPhone">
                            </div>
                            <div class="mb-3">
                                <label class="form-label">Adresse</label>
                                <textarea class="form-control" id="newVendorAddress" rows="2"></textarea>
                            </div>
                        </form>
                    </div>
                </div>
            </div>
            <div class="modal-footer">
                <button type="button" class="btn btn-secondary" data-bs-dismiss="modal">Annuller</button>
                <button type="button" class="btn btn-primary" onclick="saveVendorLink()" id="linkExistingBtn">
                    <i class="bi bi-link-45deg me-2"></i>Link Leverandør
                </button>
                <button type="button" class="btn btn-success" onclick="createAndLinkVendor()" id="createNewBtn" style="display: none;">
                    <i class="bi bi-plus-circle me-2"></i>Opret og Link
                </button>
            </div>
        </div>
    </div>
</div>

{% endblock %}

{% block extra_js %}
<script>
// Global state
let currentInvoiceId = null;
let currentFilter = 'all';
let allInvoices = [];

// Load data on page load
document.addEventListener('DOMContentLoaded', () => {
    loadStats();
    loadInvoices();
    loadVendors();
    setDefaultDates();
    loadPendingFilesCount(); // Load count for badge
});

// Set default dates
function setDefaultDates() {
    const today = new Date().toISOString().split('T')[0];
    const dueDateObj = new Date();
    dueDateObj.setDate(dueDateObj.getDate() + 30);
    const dueDate = dueDateObj.toISOString().split('T')[0];
    
    document.getElementById('invoiceDate').value = today;
    document.getElementById('dueDate').value = dueDate;
}

// Load statistics
async function loadStats() {
    try {
        const response = await fetch('/api/v1/supplier-invoices/stats/overview');
        const stats = await response.json();
        
        document.getElementById('statOverdueCount').textContent = stats.overdue_count || 0;
        document.getElementById('statOverdueAmount').textContent = formatCurrency(stats.overdue_amount);
        
        document.getElementById('statDueSoonCount').textContent = stats.due_soon_count || 0;
        document.getElementById('statDueSoonAmount').textContent = formatCurrency(stats.unpaid_amount);
        
        document.getElementById('statPendingCount').textContent = stats.pending_count || 0;
        document.getElementById('statPendingAmount').textContent = formatCurrency(stats.unpaid_amount);
        
        document.getElementById('statTotalCount').textContent = stats.total_invoices || 0;
        document.getElementById('statUnpaidAmount').textContent = formatCurrency(stats.unpaid_amount);
    } catch (error) {
        console.error('Failed to load stats:', error);
    }
}

// Load invoices
async function loadInvoices(status = null) {
    try {
        let url = '/api/v1/supplier-invoices';
        const params = new URLSearchParams();
        
        if (status && status !== 'all') {
            if (status === 'overdue') {
                params.append('overdue_only', 'true');
            } else {
                params.append('status', status);
            }
        }
        
        if (params.toString()) {
            url += '?' + params.toString();
        }
        
        const response = await fetch(url);
        allInvoices = await response.json();
        
        renderInvoices(allInvoices);
    } catch (error) {
        console.error('Failed to load invoices:', error);
        document.getElementById('invoicesTable').innerHTML = `
            <tr>
                <td colspan="8" class="text-center text-danger py-4">
                    <i class="bi bi-exclamation-triangle me-2"></i>
                    Fejl ved indlæsning af fakturaer
                </td>
            </tr>
        `;
    }
}

// Render invoices table
function renderInvoices(invoices) {
    const tbody = document.getElementById('invoicesTable');
    
    if (!invoices || invoices.length === 0) {
        tbody.innerHTML = `
            <tr>
                <td colspan="8" class="text-center text-muted py-4">
                    <i class="bi bi-inbox me-2"></i>
                    Ingen fakturaer fundet
                </td>
            </tr>
        `;
        return;
    }
    
    tbody.innerHTML = invoices.map(inv => {
        const isCreditNote = inv.invoice_type === 'credit_note';
        return `
        <tr onclick="viewInvoice(${inv.id})" style="cursor: pointer;" class="${isCreditNote ? 'table-warning' : ''}">
            <td>
                ${isCreditNote ? '<i class="bi bi-arrow-return-left text-warning me-1" title="Kreditnota"></i>' : ''}
                <strong>${inv.invoice_number}</strong>
            </td>
            <td>${inv.vendor_full_name || inv.vendor_name || '-'}</td>
            <td>${formatDate(inv.invoice_date)}</td>
            <td>${formatDate(inv.due_date)}</td>
            <td><strong class="${isCreditNote ? 'text-danger' : ''}">${formatCurrency(inv.total_amount)}</strong></td>
            <td>${getStatusBadge(inv.computed_status || inv.status)}</td>
            <td>${inv.economic_voucher_number ? `<span class="badge bg-success">Bilag #${inv.economic_voucher_number}</span>` : '-'}</td>
            <td onclick="event.stopPropagation();">
                <div class="btn-group btn-group-sm">
                    <button class="btn btn-outline-primary" onclick="viewInvoice(${inv.id})" title="Vis detaljer">
                        <i class="bi bi-eye"></i>
                    </button>
                    ${inv.status === 'pending' && !isCreditNote ? `
                        <button class="btn btn-outline-success" onclick="quickApprove(${inv.id})" title="Godkend">
                            <i class="bi bi-check-circle"></i>
                        </button>
                    ` : ''}
                    ${inv.status === 'approved' && !inv.economic_voucher_number ? `
                        <button class="btn btn-outline-primary" onclick="quickSendToEconomic(${inv.id})" title="Send til e-conomic">
                            <i class="bi bi-send"></i>
                        </button>
                    ` : ''}
                    ${!inv.economic_voucher_number ? `
                        <button class="btn btn-outline-danger" onclick="deleteInvoice(${inv.id})" title="Slet">
                            <i class="bi bi-trash"></i>
                        </button>
                    ` : ''}
                </div>
            </td>
        </tr>
    `}).join('');
}

// Load vendors for dropdown
async function loadVendors() {
    try {
        const response = await fetch('/api/v1/vendors');
        const vendors = await response.json();
        
        const select = document.getElementById('vendorId');
        select.innerHTML = '<option value="">Vælg leverandør...</option>' + 
            vendors.map(v => `<option value="${v.id}">${v.name}</option>`).join('');
    } catch (error) {
        console.error('Failed to load vendors:', error);
    }
}

// ========== PENDING FILES FUNCTIONS ==========

// Load pending files count for badge (on page load)
async function loadPendingFilesCount() {
    try {
        const response = await fetch('/api/v1/pending-supplier-invoice-files');
        const data = await response.json();
        const count = data.count || 0;
        const badge = document.getElementById('pendingFilesCount');
        if (count > 0) {
            badge.textContent = count;
            badge.style.display = 'inline-block';
        } else {
            badge.style.display = 'none';
        }
    } catch (error) {
        console.error('Failed to load pending files count:', error);
    }
}

// Switch to invoices tab
function switchToInvoicesTab() {
    // Load invoices when switching to this tab
    loadInvoices(currentFilter);
}

// Switch to pending files tab
function switchToPendingFilesTab() {
    // Load pending files when switching to this tab
    loadPendingFiles();
}

// Load pending uploaded files
async function loadPendingFiles() {
    try {
        const tbody = document.getElementById('pendingFilesTable');
        tbody.innerHTML = `
            <tr>
                <td colspan="5" class="text-center py-4">
                    <div class="spinner-border text-primary" role="status">
                        <span class="visually-hidden">Indlæser...</span>
                    </div>
                </td>
            </tr>
        `;
        
        const response = await fetch('/api/v1/pending-supplier-invoice-files');
        const data = await response.json();
        
        // Update badge count
        const count = data.count || 0;
        const badge = document.getElementById('pendingFilesCount');
        if (count > 0) {
            badge.textContent = count;
            badge.style.display = 'inline-block';
        } else {
            badge.style.display = 'none';
        }
        
        renderPendingFiles(data.files || []);
    } catch (error) {
        console.error('Failed to load pending files:', error);
        document.getElementById('pendingFilesTable').innerHTML = `
            <tr>
                <td colspan="5" class="text-center text-danger py-4">
                    <i class="bi bi-exclamation-triangle me-2"></i>
                    Fejl ved indlæsning af filer
                </td>
            </tr>
        `;
    }
}

// Render pending files table
function renderPendingFiles(files) {
    const tbody = document.getElementById('pendingFilesTable');
    
    if (!files || files.length === 0) {
        tbody.innerHTML = `
            <tr>
                <td colspan="6" class="text-center text-muted py-4">
                    <i class="bi bi-inbox me-2"></i>
                    Ingen uploadede filer afventer behandling
                </td>
            </tr>
        `;
        return;
    }
    
    tbody.innerHTML = files.map(file => `
        <tr>
            <td>
                <i class="bi bi-file-earmark-pdf text-danger me-2"></i>
                <strong>${file.filename}</strong>
            </td>
            <td>${formatDate(file.uploaded_at)}</td>
            <td>${getFileStatusBadge(file.status)}</td>
            <td>
                ${file.vendor_matched_id ? 
                    `<span class="badge bg-success" title="${file.matched_vendor_name}"><i class="bi bi-check-circle me-1"></i>${file.matched_vendor_name}</span>` : 
                    (file.vendor_name ? 
                        `<div class="d-flex align-items-center gap-2">
                            <span class="badge bg-warning text-dark" title="CVR: ${file.vendor_cvr || 'Ukendt'}">
                                <i class="bi bi-question-circle me-1"></i>${file.vendor_name}
                            </span>
                            <button class="btn btn-xs btn-outline-primary" onclick="linkOrCreateVendor(${file.file_id}, '${escapeHtml(file.vendor_name)}', '${file.vendor_cvr || ''}')" title="Link eller opret leverandør">
                                <i class="bi bi-link-45deg"></i>
                            </button>
                        </div>` : 
                        '<span class="text-muted">-</span>')
                }
            </td>
            <td>${file.template_id ? `<span class="badge bg-info">Template #${file.template_id}</span>` : '<span class="text-muted">Ingen</span>'}</td>
            <td>
                <div class="btn-group btn-group-sm">
                    ${file.status === 'ai_extracted' || file.status === 'processed' ? `
                        <button class="btn btn-outline-primary" onclick="reviewExtractedData(${file.file_id})" title="Gennemse udtrukne data">
                            <i class="bi bi-eye me-1"></i>Gennemse
                        </button>
                    ` : ''}
                    ${file.status === 'failed' || file.status === 'pending' ? `
                        <button class="btn btn-outline-warning" onclick="retryExtraction(${file.file_id})" title="Behandl fil med AI">
                            <i class="bi bi-arrow-clockwise me-1"></i>Behandl
                        </button>
                    ` : ''}
                    ${file.status === 'processing' ? `
                        <button class="btn btn-outline-secondary" disabled>
                            <i class="bi bi-hourglass-split me-1"></i>Behandler...
                        </button>
                    ` : ''}
                    <a href="/api/v1/supplier-invoices/files/${file.file_id}/download" class="btn btn-outline-success" target="_blank" title="Se PDF">
                        <i class="bi bi-file-pdf me-1"></i>Se PDF
                    </a>
                    <button class="btn btn-outline-danger" onclick="deletePendingFile(${file.file_id})" title="Slet fil">
                        <i class="bi bi-trash"></i>
                    </button>
                </div>
            </td>
        </tr>
    `).join('');
}

// Get status badge for file status
function getFileStatusBadge(status) {
    const badges = {
        'pending': '<span class="badge status-pending"><i class="bi bi-clock me-1"></i>Afventer</span>',
        'processing': '<span class="badge status-processing"><i class="bi bi-hourglass-split me-1"></i>Behandler</span>',
        'ai_extracted': '<span class="badge status-ai_extracted"><i class="bi bi-robot me-1"></i>AI Udtrukket</span>',
        'processed': '<span class="badge status-sent"><i class="bi bi-check-circle me-1"></i>Behandlet</span>',
        'failed': '<span class="badge status-failed"><i class="bi bi-exclamation-triangle me-1"></i>Fejlet</span>'
    };
    return badges[status] || `<span class="badge bg-secondary">${status}</span>`;
}

// Review extracted data from file
async function reviewExtractedData(fileId) {
    try {
        const response = await fetch(`/api/v1/supplier-invoices/files/${fileId}/extracted-data`);
        const data = await response.json();
        
        if (!data.extraction) {
            alert('Ingen udtrukne data fundet. Prøv at behandle filen igen.');
            return;
        }
        
        const ext = data.extraction;
        const lines = data.extraction_lines || [];
        
        // Parse JSON if llm_response_json exists
        let aiData = null;
        if (ext.llm_response_json) {
            try {
                aiData = JSON.parse(ext.llm_response_json);
            } catch (e) {
                console.error('Failed to parse llm_response_json:', e);
            }
        }
        
        // Normalize CVR - remove DK prefix for display
        const normalizedCVR = (ext.vendor_cvr || aiData?.vendor_cvr || '-')
            .replace(/^DK/i, '')
            .replace(/^dk/i, '')
            .trim();
        
        // Build modal content
        let modalContent = `
            <div class="alert alert-info">
                <strong>Fil:</strong> ${data.filename}<br>
                <strong>Status:</strong> ${data.status}<br>
                <strong>Confidence:</strong> ${ext.confidence ? (ext.confidence * 100).toFixed(0) + '%' : 'N/A'}<br>
                ${ext.vendor_matched_id ? 
                    `<strong class="text-success">✓ Leverandør fundet i system (ID: ${ext.vendor_matched_id})</strong>` : 
                    `<strong class="text-warning">⚠ Leverandør ikke fundet - skal oprettes</strong>`
                }
            </div>
            
            <h5>Udtrukne Data:</h5>
            <table class="table table-sm">
                <tr><th>Felt</th><th>Værdi</th></tr>
                <tr><td>Fakturanummer</td><td><strong>${aiData?.invoice_number || ext.document_id || '-'}</strong></td></tr>
                <tr><td>Fakturadato</td><td>${ext.document_date || aiData?.invoice_date || '-'}</td></tr>
                <tr><td>Forfaldsdato</td><td>${ext.due_date || aiData?.due_date || '-'}</td></tr>
                <tr><td>Total beløb</td><td><strong>${ext.total_amount || aiData?.total_amount || '-'} ${ext.currency || aiData?.currency || 'DKK'}</strong></td></tr>
                <tr><td>Leverandør navn</td><td>${ext.vendor_name || aiData?.vendor_name || '-'}</td></tr>
                <tr><td>Leverandør CVR</td><td><strong>${normalizedCVR}</strong></td></tr>
                <tr><td>Leverandør adresse</td><td>${aiData?.vendor_address || '-'}</td></tr>
            </table>
            
            ${lines.length > 0 || (aiData?.line_items && aiData.line_items.length > 0) || (aiData?.lines && aiData.lines.length > 0) ? `
                <h6>Fakturalinjer:</h6>
                <table class="table table-sm">
                    <thead>
                        <tr><th>Beskrivelse</th><th>Antal</th><th>Pris</th><th>Total</th></tr>
                    </thead>
                    <tbody>
                        ${(lines.length > 0 ? lines : (aiData.line_items || aiData.lines || [])).map(line => `
                            <tr>
                                <td>${line.description || '-'}</td>
                                <td>${line.quantity || '-'}</td>
                                <td>${line.unit_price || '-'}</td>
                                <td>${line.total_amount || line.total_price || line.line_total || '-'}</td>
                            </tr>
                        `).join('')}
                    </tbody>
                </table>
            ` : '<p class="text-muted">Ingen linjer fundet</p>'}
            
            ${data.pdf_text_preview ? `
                <h6 class="mt-3">PDF Tekst Preview:</h6>
                <div class="border rounded p-3 bg-light" style="max-height: 500px; overflow-y: auto;">
                    <pre class="mb-0" style="font-size: 0.85rem; white-space: pre-wrap; word-wrap: break-word;">${data.pdf_text_preview}</pre>
                </div>
            ` : ''}
        `;
        
        document.getElementById('reviewModalContent').innerHTML = modalContent;
        document.getElementById('reviewModalFileId').value = fileId;
        new bootstrap.Modal(document.getElementById('reviewExtractedDataModal')).show();
        
    } catch (error) {
        console.error('Failed to load extracted data:', error);
        alert('Kunne ikke hente udtrukne data: ' + error.message);
    }
}

// Retry extraction for failed file
async function retryExtraction(fileId) {
    try {
        if (!confirm('Vil du prøve at udtrække data fra denne fil igen?')) return;
        
        const response = await fetch(`/api/v1/supplier-invoices/reprocess/${fileId}`, {
            method: 'POST'
        });
        
        if (response.ok) {
            const result = await response.json();
            
            // Reload pending files list to show updated status
            await loadPendingFiles();
            
            // Show success message and offer to review
            if (confirm('Fil behandlet med succes!\n\nVil du gennemse de udtrukne data?')) {
                reviewExtractedData(fileId);
            }
        } else {
            const error = await response.json();
            alert('Kunne ikke behandle fil: ' + (error.detail || 'Ukendt fejl'));
        }
    } catch (error) {
        console.error('Failed to retry extraction:', error);
        alert('Kunne ikke prøve igen: ' + error.message);
    }
}

// Reprocess from review modal
async function reprocessFromModal() {
    const fileId = document.getElementById('reviewModalFileId').value;
    if (!fileId) {
        alert('Ingen fil valgt');
        return;
    }
    
    try {
        if (!confirm('Vil du genbehandle denne fil? Den nuværende udtrækning vil blive overskrevet.')) return;
        
        // Show loading in modal
        document.getElementById('reviewModalContent').innerHTML = `
            <div class="text-center py-5">
                <div class="spinner-border text-primary mb-3" role="status"></div>
                <p>Genbehandler fil...</p>
            </div>
        `;
        
        const response = await fetch(`/api/v1/supplier-invoices/reprocess/${fileId}`, {
            method: 'POST'
        });
        
        if (response.ok) {
            // Reload the extracted data in the modal
            await reviewExtractedData(fileId);
            
            // Also reload pending files list
            await loadPendingFiles();
        } else {
            const error = await response.json();
            alert('Kunne ikke genbehandle fil: ' + (error.detail || 'Ukendt fejl'));
        }
    } catch (error) {
        console.error('Failed to reprocess:', error);
        alert('Kunne ikke genbehandle: ' + error.message);
    }
}

// Delete pending file
async function deletePendingFile(fileId) {
    try {
        if (!confirm('Er du sikker på at du vil slette denne fil? Dette kan ikke fortrydes.')) return;
        
        const response = await fetch(`/api/v1/supplier-invoices/files/${fileId}`, {
            method: 'DELETE'
        });
        
        if (response.ok) {
            alert('Fil slettet!');
            loadPendingFiles(); // Reload list
        } else {
            const error = await response.json();
            alert('Kunne ikke slette fil: ' + (error.detail || 'Ukendt fejl'));
        }
    } catch (error) {
        console.error('Failed to delete file:', error);
        alert('Kunne ikke slette fil: ' + error.message);
    }
}

// Link or create vendor for extraction
let selectedVendorId = null;

function linkOrCreateVendor(fileId, vendorName, vendorCVR) {
    selectedVendorId = null;
    document.getElementById('linkVendorFileId').value = fileId;
    document.getElementById('linkVendorName').value = vendorName;
    document.getElementById('linkVendorCVR').value = vendorCVR;
    document.getElementById('linkVendorDisplayName').textContent = vendorName;
    document.getElementById('linkVendorDisplayCVR').textContent = vendorCVR || 'Ikke fundet';
    
    // Pre-fill create form
    document.getElementById('newVendorName').value = vendorName;
    document.getElementById('newVendorCVR').value = vendorCVR;
    
    // Reset search
    document.getElementById('vendorSearchInput').value = '';
    document.getElementById('vendorSearchResults').innerHTML = '<div class="text-center text-muted py-3">Søg for at finde leverandører</div>';
    
    // Show modal
    const modal = new bootstrap.Modal(document.getElementById('linkVendorModal'));
    modal.show();
}

// Search vendors in link modal
let vendorSearchTimer;
document.addEventListener('DOMContentLoaded', () => {
    const searchInput = document.getElementById('vendorSearchInput');
    if (searchInput) {
        searchInput.addEventListener('input', (e) => {
            clearTimeout(vendorSearchTimer);
            const query = e.target.value.trim();
            
            if (query.length < 2) {
                document.getElementById('vendorSearchResults').innerHTML = '<div class="text-center text-muted py-3">Indtast mindst 2 tegn</div>';
                return;
            }
            
            vendorSearchTimer = setTimeout(() => searchVendorsForLink(query), 300);
        });
    }
    
    // Tab switching
    const tabs = document.querySelectorAll('[data-bs-toggle="tab"]');
    tabs.forEach(tab => {
        tab.addEventListener('shown.bs.tab', (e) => {
            const target = e.target.getAttribute('data-bs-target');
            if (target === '#createNew') {
                document.getElementById('linkExistingBtn').style.display = 'none';
                document.getElementById('createNewBtn').style.display = 'inline-block';
            } else {
                document.getElementById('linkExistingBtn').style.display = 'inline-block';
                document.getElementById('createNewBtn').style.display = 'none';
            }
        });
    });
});

async function searchVendorsForLink(query) {
    try {
        const response = await fetch(`/api/v1/vendors?search=${encodeURIComponent(query)}&limit=20`);
        const data = await response.json();
        const vendors = data.vendors || [];
        
        const resultsDiv = document.getElementById('vendorSearchResults');
        
        if (vendors.length === 0) {
            resultsDiv.innerHTML = '<div class="text-center text-muted py-3">Ingen leverandører fundet</div>';
            return;
        }
        
        resultsDiv.innerHTML = vendors.map(v => `
            <button type="button" class="list-group-item list-group-item-action ${selectedVendorId === v.id ? 'active' : ''}" 
                    onclick="selectVendorForLink(${v.id}, '${escapeHtml(v.name)}')">
                <div class="d-flex justify-content-between align-items-center">
                    <div>
                        <strong>${v.name}</strong>
                        ${v.cvr_number ? `<br><small class="text-muted">CVR: ${v.cvr_number}</small>` : ''}
                    </div>
                    ${selectedVendorId === v.id ? '<i class="bi bi-check-circle text-success"></i>' : ''}
                </div>
            </button>
        `).join('');
    } catch (error) {
        console.error('Vendor search failed:', error);
        document.getElementById('vendorSearchResults').innerHTML = '<div class="text-center text-danger py-3">Søgning fejlede</div>';
    }
}

function selectVendorForLink(vendorId, vendorName) {
    selectedVendorId = vendorId;
    // Re-render to show selection
    const currentQuery = document.getElementById('vendorSearchInput').value;
    if (currentQuery) {
        searchVendorsForLink(currentQuery);
    }
}

async function saveVendorLink() {
    if (!selectedVendorId) {
        alert('Vælg venligst en leverandør fra listen');
        return;
    }
    
    try {
        const fileId = document.getElementById('linkVendorFileId').value;
        
        // Update extraction with vendor_matched_id
        const response = await fetch(`/api/v1/supplier-invoices/files/${fileId}/link-vendor`, {
            method: 'POST',
            headers: {'Content-Type': 'application/json'},
            body: JSON.stringify({vendor_id: selectedVendorId})
        });
        
        if (response.ok) {
            alert('Leverandør linket!');
            bootstrap.Modal.getInstance(document.getElementById('linkVendorModal')).hide();
            loadPendingFiles();
        } else {
            const error = await response.json();
            alert('Kunne ikke linke leverandør: ' + (error.detail || 'Ukendt fejl'));
        }
    } catch (error) {
        console.error('Link vendor failed:', error);
        alert('Kunne ikke linke leverandør: ' + error.message);
    }
}

async function createAndLinkVendor() {
    const form = document.getElementById('createVendorForm');
    if (!form.checkValidity()) {
        form.reportValidity();
        return;
    }
    
    try {
        const fileId = document.getElementById('linkVendorFileId').value;
        
        // Create vendor
        const vendorData = {
            name: document.getElementById('newVendorName').value,
            cvr_number: document.getElementById('newVendorCVR').value || null,
            email: document.getElementById('newVendorEmail').value || null,
            phone: document.getElementById('newVendorPhone').value || null,
            address: document.getElementById('newVendorAddress').value || null
        };
        
        const createResp = await fetch('/api/v1/vendors', {
            method: 'POST',
            headers: {'Content-Type': 'application/json'},
            body: JSON.stringify(vendorData)
        });
        
        if (!createResp.ok) {
            const error = await createResp.json();
            alert('Kunne ikke oprette leverandør: ' + (error.detail || 'Ukendt fejl'));
            return;
        }
        
        const newVendor = await createResp.json();
        
        // Link vendor
        const linkResp = await fetch(`/api/v1/supplier-invoices/files/${fileId}/link-vendor`, {
            method: 'POST',
            headers: {'Content-Type': 'application/json'},
            body: JSON.stringify({vendor_id: newVendor.id})
        });
        
        if (linkResp.ok) {
            alert('Leverandør oprettet og linket!');
            bootstrap.Modal.getInstance(document.getElementById('linkVendorModal')).hide();
            loadPendingFiles();
        } else {
            const error = await linkResp.json();
            alert('Leverandør oprettet, men kunne ikke linkes: ' + (error.detail || 'Ukendt fejl'));
        }
    } catch (error) {
        console.error('Create and link vendor failed:', error);
        alert('Kunne ikke oprette leverandør: ' + error.message);
    }
}

function escapeHtml(text) {
    const div = document.createElement('div');
    div.textContent = text;
    return div.innerHTML;
}

// Create invoice from extracted data
async function createInvoiceFromExtraction() {
    try {
        const fileId = document.getElementById('reviewModalFileId').value;
        
        if (!confirm('Vil du oprette en leverandørfaktura fra disse udtrukne data?')) return;
        
        // Show loading state
        const modal = document.getElementById('reviewModal');
        const originalContent = document.getElementById('reviewModalContent').innerHTML;
        document.getElementById('reviewModalContent').innerHTML = `
            <div class="text-center py-5">
                <div class="spinner-border text-primary mb-3"></div>
                <p>Opretter faktura...</p>
            </div>
        `;
        
        const response = await fetch(`/api/v1/supplier-invoices/from-extraction/${fileId}`, {
            method: 'POST'
        });
        
        if (response.ok) {
            const result = await response.json();
            alert(`✅ Faktura oprettet!\n\nFakturanummer: ${result.invoice_number}\nLeverandør: ${result.vendor_name}\nBeløb: ${result.total_amount} ${result.currency}`);
            
            // Close modal and refresh
            const modalInstance = bootstrap.Modal.getInstance(modal);
            if (modalInstance) {
                modalInstance.hide();
            }
            loadPendingFiles();
            loadInvoices();
            loadStats();
        } else {
            const error = await response.json();
            document.getElementById('reviewModalContent').innerHTML = originalContent;
            alert('Kunne ikke oprette faktura: ' + (error.detail || 'Ukendt fejl'));
        }
        
    } catch (error) {
        console.error('Failed to create invoice:', error);
        alert('Kunne ikke oprette faktura: ' + error.message);
    }
}

// ========== MANUAL ENTRY MODE ==========

let manualLineCounter = 0;

async function openManualEntryMode() {
    try {
        console.log('Opening manual entry mode...');
        
        const fileId = document.getElementById('reviewModalFileId').value;
        console.log('File ID:', fileId);
        
        if (!fileId) {
            alert('Ingen fil ID fundet');
            return;
        }
        
        // Set file ID
        document.getElementById('manualEntryFileId').value = fileId;
        
        // Clear form
        document.getElementById('manualEntryForm').reset();
        document.getElementById('manualLineItems').innerHTML = '';
        manualLineCounter = 0;
        
        // Close review modal
        const reviewModal = bootstrap.Modal.getInstance(document.getElementById('reviewExtractedDataModal'));
        if (reviewModal) {
            reviewModal.hide();
        }
        
        // Open manual entry modal first
        console.log('Opening manual entry modal...');
        const manualModal = new bootstrap.Modal(document.getElementById('manualEntryModal'));
        manualModal.show();
        
        // Wait a bit for modal to render
        await new Promise(resolve => setTimeout(resolve, 300));
        
        // Load PDF after modal is open
        console.log('Loading PDF...');
        document.getElementById('manualEntryPdfViewer').src = `/api/v1/supplier-invoices/files/${fileId}/pdf`;
        
        // Load vendors into dropdown
        console.log('Loading vendors...');
        await loadVendorsForManual();
        
        // Load extracted data and prefill form
        console.log('Loading extracted data...');
        try {
            const response = await fetch(`/api/v1/supplier-invoices/files/${fileId}/extracted-data`);
            if (response.ok) {
                const data = await response.json();
                console.log('Extracted data:', data);
                
                // Prefill form fields
                if (data.llm_data) {
                    const llm = data.llm_data;
                    console.log('LLM data invoice_number:', llm.invoice_number);
                    
                    // Invoice number
                    if (llm.invoice_number) {
                        console.log('Setting invoice number:', llm.invoice_number);
                        document.getElementById('manualInvoiceNumber').value = llm.invoice_number;
                    } else {
                        console.warn('No invoice_number in llm_data');
                    }
                    
                    // Invoice date
                    if (llm.invoice_date) {
                        document.getElementById('manualInvoiceDate').value = llm.invoice_date;
                    }
                    
                    // Due date
                    if (llm.due_date) {
                        document.getElementById('manualDueDate').value = llm.due_date;
                    }
                    
                    // Total amount
                    if (llm.total_amount) {
                        document.getElementById('manualTotalAmount').value = Math.abs(llm.total_amount);
                    }
                    
                    // Currency
                    if (llm.currency) {
                        document.getElementById('manualCurrency').value = llm.currency;
                    }
                    
                    // Invoice type (check if credit note)
                    if (llm.document_type === 'credit_note') {
                        document.getElementById('manualInvoiceType').value = 'credit_note';
                    }
                    
                    // Vendor - select if matched
                    if (data.vendor_matched_id) {
                        document.getElementById('manualVendorId').value = data.vendor_matched_id;
                    }
                    
                    // Add line items
                    if (llm.lines && llm.lines.length > 0) {
                        llm.lines.forEach(line => {
                            addManualLine();
                            const lineNum = manualLineCounter;
                            
                            if (line.description) {
                                let desc = line.description;
                                // Add VAT note to description if present
                                if (line.vat_note === 'reverse_charge') {
                                    desc += ' ⚠️ OMVENDT BETALINGSPLIGT';
                                } else if (line.vat_note === 'copydan_included') {
                                    desc += ' [Copydan incl.]';
                                }
                                document.getElementById(`manualLineDesc${lineNum}`).value = desc;
                            }
                            if (line.quantity) {
                                document.getElementById(`manualLineQty${lineNum}`).value = line.quantity;
                            }
                            if (line.unit_price) {
                                document.getElementById(`manualLinePrice${lineNum}`).value = Math.abs(line.unit_price);
                            }
                            if (line.vat_rate) {
                                document.getElementById(`manualLineVat${lineNum}`).value = line.vat_rate;
                            }
                        });
                    } else {
                        // Add one empty line if no lines extracted
                        addManualLine();
                    }
                    
                    console.log('✅ Form prefilled with extracted data');
                } else {
                    // No extracted data, add empty line
                    addManualLine();
                }
            } else {
                console.warn('⚠️ Could not load extracted data, starting with empty form');
                addManualLine();
            }
        } catch (error) {
            console.error('Error loading extracted data:', error);
            // Add empty line on error
            addManualLine();
        }
        
        console.log('Manual entry modal opened successfully');
        
    } catch (error) {
        console.error('Error opening manual entry mode:', error);
        alert('Fejl ved åbning af manuel indtastning: ' + error.message);
    }
}

async function loadVendorsForManual() {
    try {
        console.log('Fetching vendors from API...');
        const response = await fetch('/api/v1/vendors');
        
        if (!response.ok) {
            throw new Error(`HTTP ${response.status}: ${response.statusText}`);
        }
        
        const vendors = await response.json();
        console.log(`Loaded ${vendors.length} vendors`);
        
        const select = document.getElementById('manualVendorId');
        if (!select) {
            throw new Error('manualVendorId element not found');
        }
        
        select.innerHTML = '<option value="">Vælg leverandør...</option>';
        
        vendors.forEach(vendor => {
            const option = document.createElement('option');
            option.value = vendor.id;
            option.textContent = `${vendor.name}${vendor.cvr_number ? ' (CVR: ' + vendor.cvr_number + ')' : ''}`;
            select.appendChild(option);
        });
        
        console.log('Vendors loaded successfully');
    } catch (error) {
        console.error('Failed to load vendors:', error);
        alert('Kunne ikke hente leverandører: ' + error.message);
    }
}

function addManualLine() {
    try {
        manualLineCounter++;
        console.log('Adding manual line', manualLineCounter);
        
        const lineHtml = `
            <div class="card mb-2" id="manualLine${manualLineCounter}">
                <div class="card-body p-3">
                    <div class="row g-2">
                        <div class="col-md-5">
                            <input type="text" class="form-control form-control-sm" placeholder="Beskrivelse" 
                                   id="manualLineDesc${manualLineCounter}" name="line_description[]">
                        </div>
                        <div class="col-md-2">
                            <input type="number" class="form-control form-control-sm" placeholder="Antal" 
                                   id="manualLineQty${manualLineCounter}" name="line_quantity[]" value="1" step="1">
                        </div>
                        <div class="col-md-2">
                            <input type="number" class="form-control form-control-sm" placeholder="Pris" 
                                   id="manualLinePrice${manualLineCounter}" name="line_price[]" step="0.01">
                        </div>
                        <div class="col-md-2">
                            <input type="number" class="form-control form-control-sm" placeholder="Moms %" 
                                   id="manualLineVat${manualLineCounter}" name="line_vat[]" value="25" step="0.01">
                        </div>
                        <div class="col-md-1">
                            <button type="button" class="btn btn-sm btn-outline-danger w-100" onclick="removeManualLine(${manualLineCounter})">
                                <i class="bi bi-trash"></i>
                            </button>
                        </div>
                    </div>
                </div>
            </div>
        `;
        
        const container = document.getElementById('manualLineItems');
        if (!container) {
            throw new Error('manualLineItems container not found');
        }
        
        container.insertAdjacentHTML('beforeend', lineHtml);
        console.log('Manual line added successfully');
        
    } catch (error) {
        console.error('Error adding manual line:', error);
        alert('Fejl ved tilføjelse af linje: ' + error.message);
    }
}

function removeManualLine(lineId) {
    document.getElementById(`manualLine${lineId}`).remove();
}

async function saveManualInvoice() {
    try {
        const fileId = document.getElementById('manualEntryFileId').value;
        const vendorId = document.getElementById('manualVendorId').value;
        const invoiceNumber = document.getElementById('manualInvoiceNumber').value;
        const invoiceDate = document.getElementById('manualInvoiceDate').value;
        const dueDate = document.getElementById('manualDueDate').value;
        const totalAmount = parseFloat(document.getElementById('manualTotalAmount').value);
        const currency = document.getElementById('manualCurrency').value;
        const invoiceType = document.getElementById('manualInvoiceType').value;
        const notes = document.getElementById('manualNotes').value;
        
        // Validate required fields
        if (!vendorId || !invoiceNumber || !invoiceDate || !totalAmount) {
            alert('Udfyld venligst alle påkrævede felter (markeret med *)');
            return;
        }
        
        // Collect line items
        const descriptions = document.getElementsByName('line_description[]');
        const quantities = document.getElementsByName('line_quantity[]');
        const prices = document.getElementsByName('line_price[]');
        const vatRates = document.getElementsByName('line_vat[]');
        
        const lines = [];
        for (let i = 0; i < descriptions.length; i++) {
            if (descriptions[i].value.trim()) {
                const desc = descriptions[i].value;
                const qty = parseFloat(quantities[i].value) || 1;
                const price = parseFloat(prices[i].value) || 0;
                const vatRate = parseFloat(vatRates[i].value) || 25.00;
                
                // Detect VAT code from description
                let vatCode = 'I25';  // Default: 25% input VAT
                if (desc.includes('OMVENDT BETALINGSPLIGT') || desc.includes('⚠️ OMVENDT BETALINGSPLIGT')) {
                    vatCode = 'I52';  // Reverse charge - no VAT
                }
                
                lines.push({
                    line_number: i + 1,
                    description: desc,
                    quantity: qty,
                    unit_price: price,
                    line_total: qty * price,
                    vat_rate: vatRate,
                    vat_code: vatCode
                });
            }
        }
        
        // Create invoice
        const response = await fetch('/api/v1/supplier-invoices', {
            method: 'POST',
            headers: {'Content-Type': 'application/json'},
            body: JSON.stringify({
                vendor_id: parseInt(vendorId),
                invoice_number: invoiceNumber,
                invoice_date: invoiceDate,
                due_date: dueDate || invoiceDate,
                total_amount: totalAmount,
                currency: currency,
                invoice_type: invoiceType,
                status: invoiceType === 'credit_note' ? 'credited' : 'unpaid',
                notes: `Manuel indtastning fra fil ID ${fileId}. ${notes}`.trim(),
                lines: lines
            })
        });
        
        if (response.ok) {
            const result = await response.json();
            
            // Mark file as completed
            await fetch(`/api/v1/supplier-invoices/files/${fileId}`, {
                method: 'PATCH',
                headers: {'Content-Type': 'application/json'},
                body: JSON.stringify({status: 'completed'})
            });
            
            // Close modal and refresh
            bootstrap.Modal.getInstance(document.getElementById('manualEntryModal')).hide();
            alert(`✅ ${invoiceType === 'credit_note' ? 'Kreditnota' : 'Faktura'} oprettet!\n\nFakturanummer: ${invoiceNumber}\nBeløb: ${totalAmount} ${currency}`);
            
            loadPendingFiles();
            loadInvoices();
            loadStats();
        } else {
            const error = await response.json();
            alert('Kunne ikke oprette faktura: ' + (error.detail || 'Ukendt fejl'));
        }
        
    } catch (error) {
        console.error('Failed to save manual invoice:', error);
        alert('Kunne ikke gemme faktura: ' + error.message);
    }
}

// ========== END MANUAL ENTRY MODE ==========

// ========== END PENDING FILES FUNCTIONS ==========

// Filter functions
function applyFilter(filter, element) {
    currentFilter = filter;
    
    // Update active pill
    document.querySelectorAll('.filter-pill').forEach(pill => pill.classList.remove('active'));
    element.classList.add('active');
    
    // Reload invoices with filter
    loadInvoices(filter);
}

// Open create modal
function openCreateModal() {
    document.getElementById('invoiceForm').reset();
    document.getElementById('invoiceId').value = '';
    document.getElementById('lineItems').innerHTML = '';
    setDefaultDates();
    
    new bootstrap.Modal(document.getElementById('invoiceModal')).show();
}

// Add line item
let lineCounter = 0;
function addLine() {
    lineCounter++;
    const lineHtml = `
        <div class="line-item" id="line-${lineCounter}">
            <div class="row">
                <div class="col-md-5">
                    <input type="text" class="form-control form-control-sm mb-2" 
                           placeholder="Beskrivelse" name="line_description[]">
                </div>
                <div class="col-md-2">
                    <input type="number" step="1" class="form-control form-control-sm mb-2" 
                           placeholder="Antal" name="line_quantity[]" value="1">
                </div>
                <div class="col-md-2">
                    <input type="number" step="0.01" class="form-control form-control-sm mb-2" 
                           placeholder="Pris" name="line_price[]">
                </div>
                <div class="col-md-2">
                    <select class="form-select form-select-sm mb-2" name="line_vat_code[]">
                        <option value="I25">Moms 25%</option>
                        <option value="I0">Moms 0%</option>
                        <option value="IY25">Omvendt 25%</option>
                    </select>
                </div>
                <div class="col-md-1">
                    <button type="button" class="btn btn-sm btn-outline-danger" onclick="removeLine(${lineCounter})">
                        <i class="bi bi-x"></i>
                    </button>
                </div>
            </div>
        </div>
    `;
    document.getElementById('lineItems').insertAdjacentHTML('beforeend', lineHtml);
}

function removeLine(lineId) {
    document.getElementById(`line-${lineId}`)?.remove();
}

// Save invoice
async function saveInvoice() {
    try {
        const form = document.getElementById('invoiceForm');
        if (!form.checkValidity()) {
            form.reportValidity();
            return;
        }
        
        // Collect line items
        const lines = [];
        const descriptions = form.querySelectorAll('[name="line_description[]"]');
        const quantities = form.querySelectorAll('[name="line_quantity[]"]');
        const prices = form.querySelectorAll('[name="line_price[]"]');
        const vatCodes = form.querySelectorAll('[name="line_vat_code[]"]');
        
        for (let i = 0; i < descriptions.length; i++) {
            if (descriptions[i].value.trim()) {
                const qty = parseFloat(quantities[i].value) || 1;
                const price = parseFloat(prices[i].value) || 0;
                const lineTotal = qty * price;
                
                // Calculate VAT based on code
                let vatRate = 25;
                if (vatCodes[i].value === 'I0') vatRate = 0;
                
                const vatAmount = lineTotal * (vatRate / 100);
                
                lines.push({
                    description: descriptions[i].value,
                    quantity: qty,
                    unit_price: price,
                    line_total: lineTotal + vatAmount,
                    vat_code: vatCodes[i].value,
                    vat_rate: vatRate,
                    vat_amount: vatAmount,
                    contra_account: '5810'
                });
            }
        }
        
        const data = {
            invoice_number: document.getElementById('invoiceNumber').value,
            vendor_id: parseInt(document.getElementById('vendorId').value),
            invoice_date: document.getElementById('invoiceDate').value,
            due_date: document.getElementById('dueDate').value,
            total_amount: parseFloat(document.getElementById('totalAmount').value),
            vat_amount: parseFloat(document.getElementById('vatAmount').value) || 0,
            currency: document.getElementById('currency').value,
            description: document.getElementById('description').value,
            notes: document.getElementById('notes').value,
            lines: lines
        };
        
        const response = await fetch('/api/v1/supplier-invoices', {
            method: 'POST',
            headers: { 'Content-Type': 'application/json' },
            body: JSON.stringify(data)
        });
        
        if (response.ok) {
            bootstrap.Modal.getInstance(document.getElementById('invoiceModal')).hide();
            loadInvoices(currentFilter);
            loadStats();
            alert('✅ Faktura oprettet');
        } else {
            const error = await response.json();
            alert('❌ Fejl: ' + (error.detail || 'Kunne ikke oprette faktura'));
        }
    } catch (error) {
        console.error('Failed to save invoice:', error);
        alert('❌ Fejl ved oprettelse af faktura');
    }
}

// View invoice details
async function viewInvoice(invoiceId) {
    try {
        const response = await fetch(`/api/v1/supplier-invoices/${invoiceId}`);
        const invoice = await response.json();
        
        currentInvoiceId = invoiceId;
        
        const detailsHtml = `
            <div class="row mb-3">
                <div class="col-md-6">
                    <p class="mb-1"><strong>Fakturanummer:</strong> ${invoice.invoice_number}</p>
                    <p class="mb-1"><strong>Leverandør:</strong> ${invoice.vendor_full_name || invoice.vendor_name}</p>
                    <p class="mb-1"><strong>Status:</strong> ${getStatusBadge(invoice.status)}</p>
                </div>
                <div class="col-md-6">
                    <p class="mb-1"><strong>Fakturadato:</strong> ${formatDate(invoice.invoice_date)}</p>
                    <p class="mb-1"><strong>Forfaldsdato:</strong> ${formatDate(invoice.due_date)}</p>
                    <p class="mb-1"><strong>Total:</strong> <strong>${formatCurrency(invoice.total_amount)}</strong></p>
                </div>
            </div>
            
            ${invoice.description ? `<p><strong>Beskrivelse:</strong> ${invoice.description}</p>` : ''}
            ${invoice.notes ? `<p><strong>Noter:</strong> ${invoice.notes}</p>` : ''}
            
            ${invoice.economic_voucher_number ? `
                <div class="alert alert-success">
                    <i class="bi bi-check-circle me-2"></i>
                    Sendt til e-conomic - Bilagsnummer: <strong>${invoice.economic_voucher_number}</strong>
                    (Kassekladde ${invoice.economic_journal_number}, År ${invoice.economic_accounting_year})
                </div>
            ` : ''}
            
            <h6 class="mt-3">Linjer:</h6>
            <table class="table table-sm">
                <thead>
                    <tr>
                        <th>Beskrivelse</th>
                        <th>Antal</th>
                        <th>Pris</th>
                        <th>Moms</th>
                        <th>Total</th>
                    </tr>
                </thead>
                <tbody>
                    ${(invoice.lines || []).map(line => `
                        <tr>
                            <td>${line.description}</td>
                            <td>${line.quantity}</td>
                            <td>${formatCurrency(line.unit_price)}</td>
                            <td>${line.vat_code} (${line.vat_rate}%)</td>
                            <td><strong>${formatCurrency(line.line_total)}</strong></td>
                        </tr>
                    `).join('')}
                </tbody>
            </table>
        `;
        
        document.getElementById('invoiceDetails').innerHTML = detailsHtml;
        
        // Show/hide action buttons based on status
        document.getElementById('approveBtn').style.display = invoice.status === 'pending' ? 'inline-block' : 'none';
        document.getElementById('sendToEconomicBtn').style.display = 
            (invoice.status === 'approved' && !invoice.economic_voucher_number) ? 'inline-block' : 'none';
        
        new bootstrap.Modal(document.getElementById('viewInvoiceModal')).show();
    } catch (error) {
        console.error('Failed to load invoice:', error);
        alert('❌ Kunne ikke hente faktura');
    }
}

// Approve invoice
async function approveInvoice() {
    if (!currentInvoiceId) return;
    
    if (!confirm('Godkend denne faktura?')) return;
    
    try {
        const response = await fetch(`/api/v1/supplier-invoices/${currentInvoiceId}/approve`, {
            method: 'POST',
            headers: { 'Content-Type': 'application/json' },
            body: JSON.stringify({ approved_by: 'CurrentUser' }) // TODO: Get from auth
        });
        
        if (response.ok) {
            bootstrap.Modal.getInstance(document.getElementById('viewInvoiceModal')).hide();
            loadInvoices(currentFilter);
            loadStats();
            alert('✅ Faktura godkendt');
        } else {
            const error = await response.json();
            alert('❌ Fejl: ' + (error.detail || 'Kunne ikke godkende'));
        }
    } catch (error) {
        console.error('Failed to approve:', error);
        alert('❌ Fejl ved godkendelse');
    }
}

// Send to e-conomic
async function sendToEconomic() {
    if (!currentInvoiceId) return;
    
    if (!confirm('Send denne faktura til e-conomic kassekladde?')) return;
    
    try {
        const response = await fetch(`/api/v1/supplier-invoices/${currentInvoiceId}/send-to-economic`, {
            method: 'POST'
        });
        
        if (response.ok) {
            const result = await response.json();
            bootstrap.Modal.getInstance(document.getElementById('viewInvoiceModal')).hide();
            loadInvoices(currentFilter);
            loadStats();
            alert(`✅ Faktura sendt til e-conomic\nBilagsnummer: ${result.voucher_number}`);
        } else {
            const error = await response.json();
            alert('❌ Fejl: ' + (error.detail || 'Kunne ikke sende til e-conomic'));
        }
    } catch (error) {
        console.error('Failed to send to e-conomic:', error);
        alert('❌ Fejl ved sending til e-conomic');
    }
}

// Quick approve
async function quickApprove(invoiceId) {
    if (!confirm('Godkend denne faktura?')) return;
    
    try {
        const response = await fetch(`/api/v1/supplier-invoices/${invoiceId}/approve`, {
            method: 'POST',
            headers: { 'Content-Type': 'application/json' },
            body: JSON.stringify({ approved_by: 'CurrentUser' })
        });
        
        if (response.ok) {
            loadInvoices(currentFilter);
            loadStats();
        } else {
            alert('❌ Kunne ikke godkende');
        }
    } catch (error) {
        console.error('Failed to approve:', error);
    }
}

// Quick send to e-conomic
async function quickSendToEconomic(invoiceId) {
    if (!confirm('Send til e-conomic?')) return;
    
    try {
        const response = await fetch(`/api/v1/supplier-invoices/${invoiceId}/send-to-economic`, {
            method: 'POST'
        });
        
        if (response.ok) {
            const result = await response.json();
            loadInvoices(currentFilter);
            loadStats();
            alert(`✅ Sendt - Bilag #${result.voucher_number}`);
        } else {
            const error = await response.json();
            alert('❌ Fejl: ' + (error.detail || 'Kunne ikke sende'));
        }
    } catch (error) {
        console.error('Failed to send:', error);
    }
}

// Delete invoice
async function deleteInvoice(invoiceId) {
    if (!confirm('Slet denne faktura?')) return;
    
    try {
        const response = await fetch(`/api/v1/supplier-invoices/${invoiceId}`, {
            method: 'DELETE'
        });
        
        if (response.ok) {
            loadInvoices(currentFilter);
            loadStats();
        } else {
            alert('❌ Kunne ikke slette');
        }
    } catch (error) {
        console.error('Failed to delete:', error);
    }
}

// Utility functions
function formatCurrency(amount) {
    if (amount === null || amount === undefined) return '-';
    return new Intl.NumberFormat('da-DK', {
        style: 'currency',
        currency: 'DKK'
    }).format(amount);
}

function formatDate(dateStr) {
    if (!dateStr) return '-';
    const date = new Date(dateStr);
    return date.toLocaleDateString('da-DK');
}

function getStatusBadge(status) {
    const badges = {
        'pending': '<span class="badge status-pending">Afventer</span>',
        'approved': '<span class="badge status-approved">Godkendt</span>',
        'sent_to_economic': '<span class="badge status-sent">Sendt</span>',
        'paid': '<span class="badge status-paid">Betalt</span>',
        'overdue': '<span class="badge status-overdue">Overskredet</span>',
        'cancelled': '<span class="badge bg-secondary">Annulleret</span>'
    };
    return badges[status] || `<span class="badge bg-secondary">${status}</span>`;
}

// ========== UPLOAD FUNCTIONS ==========

function openUploadModal() {
    document.getElementById('uploadForm').reset();
    document.getElementById('uploadProgress').classList.add('d-none');
    document.getElementById('uploadResult').classList.add('d-none');
    document.getElementById('uploadResult').innerHTML = '';
    document.getElementById('uploadBtn').disabled = false;
    document.getElementById('fileCount').textContent = '';
    
    // Add event listener for file selection
    const fileInput = document.getElementById('fileInput');
    fileInput.addEventListener('change', function() {
        const count = this.files.length;
        const fileCountDiv = document.getElementById('fileCount');
        if (count > 0) {
            fileCountDiv.innerHTML = `<i class="bi bi-files me-1"></i><strong>${count} fil(er) valgt</strong>`;
        } else {
            fileCountDiv.textContent = '';
        }
    });
    
    new bootstrap.Modal(document.getElementById('uploadModal')).show();
}

async function uploadInvoice() {
    const fileInput = document.getElementById('fileInput');
    const files = Array.from(fileInput.files);
    
    if (files.length === 0) {
        alert('Vælg venligst minimum én fil');
        return;
    }
    
    // Validate all files
    const allowedTypes = ['.pdf', '.png', '.jpg', '.jpeg'];
    for (const file of files) {
        const ext = '.' + file.name.split('.').pop().toLowerCase();
        if (!allowedTypes.includes(ext)) {
            alert(`Kun PDF, PNG eller JPG filer tilladt: ${file.name}`);
            return;
        }
        
        // Validate file size (50 MB)
        if (file.size > 50 * 1024 * 1024) {
            alert(`Fil for stor (max 50 MB): ${file.name}`);
            return;
        }
    }
    
    const uploadBtn = document.getElementById('uploadBtn');
    const progressDiv = document.getElementById('uploadProgress');
    const progressBar = document.getElementById('progressBar');
    const progressText = document.getElementById('progressText');
    const resultDiv = document.getElementById('uploadResult');
    
    const results = [];
    const totalFiles = files.length;
    
    try {
        // Show progress
        uploadBtn.disabled = true;
        progressDiv.classList.remove('d-none');
        resultDiv.classList.add('d-none');
        
        // Upload each file
        for (let i = 0; i < files.length; i++) {
            const file = files[i];
            const fileNum = i + 1;
            
            progressBar.style.width = `${(i / totalFiles) * 100}%`;
            progressText.textContent = `Uploader fil ${fileNum}/${totalFiles}: ${file.name}...`;
            
            // Create FormData
            const formData = new FormData();
            formData.append('file', file);
            
            try {
                // Upload file
                const response = await fetch('/api/v1/supplier-invoices/upload', {
                    method: 'POST',
                    body: formData
                });
                
                const result = await response.json();
                results.push({ file: file.name, success: response.ok, result });
                
            } catch (error) {
                results.push({ file: file.name, success: false, result: { message: error.message } });
            }
        }
        
        progressBar.style.width = '100%';
        progressText.textContent = `Færdig! ${totalFiles} fil(er) uploadet`;
        
        // Hide progress after animation
        setTimeout(() => {
            progressDiv.classList.add('d-none');
            showMultiUploadResult(results);
        }, 500);
        
    } catch (error) {
        console.error('Upload failed:', error);
        progressDiv.classList.add('d-none');
        showMultiUploadResult([{ file: 'Unknown', success: false, result: { message: error.message } }]);
    } finally {
        uploadBtn.disabled = false;
    }
}

// Show results for multiple file uploads
function showMultiUploadResult(results) {
    const resultDiv = document.getElementById('uploadResult');
    resultDiv.classList.remove('d-none');
    
    const successCount = results.filter(r => r.success).length;
    const failCount = results.length - successCount;
    
    let html = '';
    
    if (successCount > 0) {
        html += `
            <div class="alert alert-success">
                <h6><i class="bi bi-check-circle me-2"></i>${successCount} Faktura(er) Uploadet!</h6>
                <p class="mb-2">Filerne er uploadet og klar til gennemgang.</p>
                <ul class="small mb-0">
        `;
        results.filter(r => r.success).forEach(r => {
            html += `<li><strong>${r.file}</strong> - ${r.result.message || 'Uploadet'}</li>`;
        });
        html += `</ul></div>`;
    }
    
    if (failCount > 0) {
        html += `
            <div class="alert alert-warning mt-2">
                <h6><i class="bi bi-exclamation-triangle me-2"></i>${failCount} Fil(er) Fejlede</h6>
                <ul class="small mb-0">
        `;
        results.filter(r => !r.success).forEach(r => {
            html += `<li><strong>${r.file}</strong> - ${r.result.message || 'Ukendt fejl'}</li>`;
        });
        html += `</ul></div>`;
    }
    
    html += `
        <div class="mt-3">
            <button class="btn btn-primary btn-sm" onclick="closeUploadAndRefresh()">
                <i class="bi bi-check-lg me-1"></i>OK - Gå til Uploadede Filer
            </button>
        </div>
    `;
    
    resultDiv.innerHTML = html;
}

function showUploadResult(result, success) {
    const resultDiv = document.getElementById('uploadResult');
    resultDiv.classList.remove('d-none');
    
    if (result.status === 'duplicate') {
        // Duplicate file or invoice
        resultDiv.innerHTML = `
            <div class="alert alert-warning">
                <h6><i class="bi bi-exclamation-triangle me-2"></i>Duplicate Detected</h6>
                <p class="mb-2">${result.message}</p>
                ${result.invoice_id ? `
                    <button class="btn btn-sm btn-outline-primary" onclick="viewInvoice(${result.invoice_id})">
                        <i class="bi bi-eye me-1"></i>Vis eksisterende faktura
                    </button>
                ` : ''}
            </div>
        `;
    } else if (success && (result.status === 'success' || result.status === 'needs_review')) {
        // Success - show that file is ready for review
        resultDiv.innerHTML = `
            <div class="alert alert-success">
                <h6><i class="bi bi-check-circle me-2"></i>Faktura Uploadet!</h6>
                <p class="mb-3">${result.message || 'Filen er uploadet og klar til gennemgang.'}</p>
                
                <div class="mt-3">
                    <button class="btn btn-primary btn-sm" onclick="closeUploadAndRefresh()">
                        <i class="bi bi-check-lg me-1"></i>OK - Gå til Uploadede Filer
                    </button>
                </div>
            </div>
        `;
        
        // Auto-refresh file list
        setTimeout(() => {
            loadPendingFiles();
            loadStats();
        }, 500);
        
    } else if (result.status === 'error' && result.needs_review) {
        // AI parsing failed - needs manual review
        resultDiv.innerHTML = `
            <div class="alert alert-warning">
                <h6><i class="bi bi-exclamation-triangle me-2"></i>AI-Analyse Fejlede - Manuel Gennemgang Nødvendig</h6>
                <p class="mb-2">${result.message}</p>
                ${result.error_details ? `
                    <details class="mt-2">
                        <summary class="text-muted small">Tekniske detaljer</summary>
                        <pre class="small mt-2 text-muted">${result.error_details}</pre>
                    </details>
                ` : ''}
                <div class="mt-3">
                    <small class="text-muted">
                        <i class="bi bi-info-circle me-1"></i>
                        Filen er gemt og kan behandles manuelt senere.
                    </small>
                </div>
                <button class="btn btn-secondary btn-sm mt-2" onclick="closeUploadAndRefresh()">
                    <i class="bi bi-check-lg me-1"></i>OK
                </button>
            </div>
        `;
    } else {
        // Error
        resultDiv.innerHTML = `
            <div class="alert alert-danger">
                <h6><i class="bi bi-x-circle me-2"></i>Upload Fejlede</h6>
                <p class="mb-0">${result.message || result.detail || 'Ukendt fejl'}</p>
            </div>
        `;
    }
}

function closeUploadAndRefresh() {
    bootstrap.Modal.getInstance(document.getElementById('uploadModal')).hide();
    loadInvoices(currentFilter);
    loadStats();
}

// Create template from successfully uploaded invoice
async function createTemplateFromInvoice(invoiceId, vendorId) {
    try {
        const loadingDiv = document.getElementById('uploadResult');
        loadingDiv.innerHTML = `
            <div class="alert alert-info">
                <div class="d-flex align-items-center">
                    <div class="spinner-border spinner-border-sm me-3" role="status"></div>
                    <div>
                        <strong>Opretter template...</strong><br>
                        <small>AI analyserer faktura og genererer patterns...</small>
                    </div>
                </div>
            </div>
        `;
        
        // Step 1: Get PDF text from invoice
        const reprocessResp = await fetch(`/api/v1/supplier-invoices/reprocess/${invoiceId}`, {
            method: 'POST'
        });
        const pdfData = await reprocessResp.json();
        
        if (!pdfData.pdf_text) {
            throw new Error('Kunne ikke hente PDF tekst');
        }
        
        // Step 2: AI analyze
        const aiResp = await fetch('/api/v1/supplier-invoices/ai-analyze', {
            method: 'POST',
            headers: {'Content-Type': 'application/json'},
            body: JSON.stringify({
                pdf_text: pdfData.pdf_text,
                vendor_id: vendorId
            })
        });
        
        const aiData = await aiResp.json();
        
        // Step 3: Convert AI data to template format
        const fieldMappings = {};
        const detectionPatterns = [];
        
        // Build field mappings from AI response
        if (aiData.vendor_cvr || aiData.cvr) {
            const cvrValue = aiData.vendor_cvr?.value || aiData.vendor_cvr || aiData.cvr;
            fieldMappings.vendor_cvr = {
                pattern: aiData.vendor_cvr?.pattern || `DK\\s*(${cvrValue})`,
                group: 1
            };
        }
        
        if (aiData.invoice_number) {
            const invNum = aiData.invoice_number?.value || aiData.invoice_number;
            fieldMappings.invoice_number = {
                pattern: aiData.invoice_number?.pattern || `(?:Nummer|Faktura|Invoice)\\s*(${invNum})`,
                group: 1
            };
        }
        
        if (aiData.invoice_date) {
            fieldMappings.invoice_date = {
                pattern: aiData.invoice_date?.pattern || `Dato\\s*(\\d{1,2}[\\/.\\-]\\d{1,2}[\\/.\\-]\\d{2,4})`,
                group: 1,
                format: "DD.MM.YYYY"
            };
        }
        
        if (aiData.total_amount) {
            fieldMappings.total_amount = {
                pattern: aiData.total_amount?.pattern || `(?:Total|I alt|Beløb)\\s*([\\d.,]+)`,
                group: 1
            };
        }
        
        // Lines markers
        if (aiData.lines_start) {
            fieldMappings.lines_start = {
                pattern: aiData.lines_start?.pattern || aiData.lines_start
            };
        }
        
        if (aiData.lines_end) {
            fieldMappings.lines_end = {
                pattern: aiData.lines_end?.pattern || aiData.lines_end
            };
        }
        
        // Detection patterns
        if (aiData.detection_patterns && Array.isArray(aiData.detection_patterns)) {
            aiData.detection_patterns.forEach((p, i) => {
                const pattern = typeof p === 'string' ? p : p.pattern;
                const weight = typeof p === 'object' ? p.weight : (0.5 - i * 0.1);
                detectionPatterns.push({
                    type: 'text',
                    pattern: pattern,
                    weight: Math.max(0.1, weight)
                });
            });
        } else {
            // Default detection patterns if none provided
            detectionPatterns.push({type: 'text', pattern: 'Faktura', weight: 0.3});
        }
        
        // Step 4: Create template
        const createResp = await fetch('/api/v1/supplier-invoices/templates', {
            method: 'POST',
            headers: {'Content-Type': 'application/json'},
            body: JSON.stringify({
                vendor_id: vendorId,
                template_name: `Auto-generated ${new Date().toISOString().split('T')[0]}`,
                detection_patterns: detectionPatterns,
                field_mappings: fieldMappings
            })
        });
        
        const template = await createResp.json();
        
        if (!createResp.ok) {
            throw new Error(template.detail || 'Kunne ikke oprette template');
        }
        
        // Success!
        loadingDiv.innerHTML = `
            <div class="alert alert-success">
                <h6><i class="bi bi-check-circle me-2"></i>Template Oprettet!</h6>
                <p class="mb-2">Næste gang en faktura fra denne leverandør uploades, vil den blive behandlet automatisk på 0.1 sekunder i stedet for ${aiData._processing_time || '10'} sekunder!</p>
                
                <div class="mt-3">
                    <a href="/billing/template-builder?template_id=${template.template_id}" class="btn btn-primary btn-sm me-2">
                        <i class="bi bi-pencil me-1"></i>Rediger Template
                    </a>
                    <a href="/billing/templates" class="btn btn-outline-primary btn-sm me-2">
                        <i class="bi bi-list me-1"></i>Se Alle Templates
                    </a>
                    <button class="btn btn-success btn-sm" onclick="closeUploadAndRefresh()">
                        <i class="bi bi-check-lg me-1"></i>Luk
                    </button>
                </div>
            </div>
        `;
        
    } catch (error) {
        console.error('Template creation error:', error);
        document.getElementById('uploadResult').innerHTML = `
            <div class="alert alert-danger">
                <h6><i class="bi bi-x-circle me-2"></i>Kunne ikke oprette template</h6>
                <p class="mb-0">${error.message}</p>
                <button class="btn btn-secondary btn-sm mt-2" onclick="closeUploadAndRefresh()">Luk</button>
            </div>
        `;
    }
}
</script>
{% endblock %}