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

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

{% block extra_css %}
<style>
    /* Email Layout - 3 Column Grid */
    .email-container {
        display: flex;
        gap: 1rem;
        height: calc(100vh - 140px);
        overflow: hidden;
    }
    
    /* Left Sidebar - Email List (25%) */
    .email-list-sidebar {
        flex: 0 0 400px;
        display: flex;
        flex-direction: column;
        background: var(--bg-card);
        border-radius: var(--border-radius);
        overflow: hidden;
    }
    
    .email-list-header {
        padding: 1rem;
        border-bottom: 1px solid rgba(0,0,0,0.1);
    }
    
    .email-list-filters {
        padding: 0.5rem 1rem;
        border-bottom: 1px solid rgba(0,0,0,0.05);
        display: flex;
        gap: 0.5rem;
        flex-wrap: wrap;
    }
    
    .filter-pill {
        background: var(--bg-body);
        border: 1px solid rgba(0,0,0,0.1);
        color: var(--text-secondary);
        padding: 0.4rem 0.9rem;
        border-radius: 20px;
        font-size: 0.85rem;
        transition: all 0.2s;
        cursor: pointer;
        white-space: nowrap;
    }
    
    .filter-pill:hover, .filter-pill.active {
        background: var(--accent);
        color: white;
        border-color: var(--accent);
    }
    
    .filter-pill .count {
        opacity: 0.7;
        margin-left: 0.3rem;
    }
    
    .email-list-body {
        flex: 1;
        overflow-y: auto;
        overflow-x: hidden;
    }
    
    .email-item {
        padding: 1rem;
        border-bottom: 1px solid rgba(0,0,0,0.05);
        cursor: pointer;
        transition: all 0.2s;
        display: flex;
        gap: 0.75rem;
    }
    
    .email-item:hover:not(.active) {
        background: rgba(15, 76, 117, 0.08);
    }
    
    .email-item.unread:not(.active) {
        background: rgba(15, 76, 117, 0.05);
        border-left: 3px solid var(--accent);
    }
    
    .email-item.unread .email-subject {
        font-weight: 700;
    }
    
    .email-item.active {
        background: var(--accent) !important;
        border-left: 4px solid #0a3a5c !important;
    }
    
    .email-item.active .email-subject,
    .email-item.active .email-sender,
    .email-item.active .email-preview,
    .email-item.active .email-time {
        color: white !important;
    }
    
    .email-item.active .badge {
        background: rgba(255, 255, 255, 0.2) !important;
        color: white !important;
        border-color: rgba(255, 255, 255, 0.3) !important;
    }
    
    .email-item.active .sender-avatar {
        border: 2px solid rgba(255, 255, 255, 0.3);
    }
    
    .sender-avatar {
        width: 40px;
        height: 40px;
        border-radius: 50%;
        background: var(--accent-light);
        color: var(--accent);
        display: flex;
        align-items: center;
        justify-content: center;
        font-weight: bold;
        font-size: 0.85rem;
        flex-shrink: 0;
    }
    
    .email-item.active .sender-avatar {
        background: rgba(255,255,255,0.2);
        color: white;
    }
    
    .email-item-content {
        flex: 1;
        min-width: 0;
    }
    
    .email-item-header {
        display: flex;
        justify-content: space-between;
        align-items: baseline;
        margin-bottom: 0.3rem;
    }
    
    .email-sender {
        font-weight: 600;
        font-size: 0.9rem;
        color: var(--text-primary);
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }
    
    .email-time {
        font-size: 0.75rem;
        color: var(--text-secondary);
        white-space: nowrap;
        margin-left: 0.5rem;
    }
    
    .email-subject {
        font-size: 0.9rem;
        color: var(--text-primary);
        margin-bottom: 0.25rem;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }
    
    .email-preview {
        font-size: 0.8rem;
        color: var(--text-secondary);
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
        margin-bottom: 0.3rem;
    }
    
    .email-meta {
        display: flex;
        gap: 0.5rem;
        align-items: center;
    }
    
    .classification-badge {
        font-size: 0.7rem;
        padding: 0.15rem 0.5rem;
        border-radius: 10px;
        font-weight: 500;
    }
    
    .classification-invoice { background: #d4edda; color: #155724; }
    .classification-order_confirmation { background: #d1ecf1; color: #0c5460; }
    .classification-freight_note { background: #fff3cd; color: #856404; }
    .classification-time_confirmation { background: #e2e3e5; color: #383d41; }
    .classification-case_notification { background: #cce5ff; color: #004085; }
    .classification-bankruptcy { background: #f8d7da; color: #721c24; }
    .classification-spam { background: #343a40; color: #fff; }
    .classification-general { background: #e9ecef; color: #495057; }
    
    [data-bs-theme="dark"] .classification-badge {
        opacity: 0.9;
    }
    
    .unread-indicator {
        width: 8px;
        height: 8px;
        border-radius: 50%;
        background: var(--accent);
        margin-right: 0.3rem;
    }
    
    /* Center Pane - Email Content (50%) */
    .email-content-pane {
        flex: 1;
        display: flex;
        flex-direction: column;
        background: var(--bg-card);
        border-radius: var(--border-radius);
        overflow: hidden;
    }
    
    .email-content-header {
        padding: 1.5rem;
        border-bottom: 1px solid rgba(0,0,0,0.1);
    }
    
    .email-content-subject {
        font-size: 1.5rem;
        font-weight: 700;
        color: var(--text-primary);
        margin-bottom: 1rem;
    }
    
    .email-content-meta {
        display: flex;
        align-items: center;
        gap: 1rem;
        flex-wrap: wrap;
    }
    
    .sender-info {
        display: flex;
        align-items: center;
        gap: 0.75rem;
    }
    
    .sender-details {
        display: flex;
        flex-direction: column;
    }
    
    .sender-name {
        font-weight: 600;
        font-size: 0.95rem;
    }
    
    .sender-email {
        font-size: 0.8rem;
        color: var(--text-secondary);
    }
    
    .email-timestamp {
        color: var(--text-secondary);
        font-size: 0.85rem;
    }
    
    .email-actions {
        padding: 1rem 1.5rem;
        border-bottom: 1px solid rgba(0,0,0,0.05);
        background: var(--bg-body);
        flex-wrap: wrap;
    }
    
    .email-actions .btn-primary {
        background: var(--accent);
        border-color: var(--accent);
        color: white;
    }
    
    .email-actions .btn-primary:hover {
        background: #0a3a5c;
        border-color: #0a3a5c;
    }
    
    .email-body {
        flex: 1;
        padding: 1.5rem;
        overflow-y: auto;
        line-height: 1.6;
    }
    
    .email-body iframe {
        width: 100%;
        border: none;
        min-height: 400px;
    }
    
    .email-attachments {
        padding: 1rem 1.5rem;
        border-top: 1px solid rgba(0,0,0,0.1);
        background: var(--bg-body);
    }
    
    .attachment-item {
        padding: 0.75rem 1rem;
        background: var(--bg-card);
        border: 1px solid rgba(0,0,0,0.1);
        border-radius: 8px;
        margin-bottom: 0.5rem;
        transition: all 0.2s;
        color: var(--text-primary);
    }
    
    .attachment-item:hover {
        background: var(--bg-hover);
        border-color: var(--accent);
    }
    
    .email-attachments {
        margin-top: 1.5rem;
        padding-top: 1.5rem;
        border-top: 1px solid rgba(0,0,0,0.1);
    }
    
    .empty-state {
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        height: 100%;
        color: var(--text-secondary);
    }
    
    .empty-state i {
        font-size: 4rem;
        opacity: 0.3;
        margin-bottom: 1rem;
    }
    
    /* Right Sidebar - AI Analysis (25%) */
    .email-analysis-sidebar {
        flex: 0 0 380px;
        display: flex;
        flex-direction: column;
        gap: 1rem;
        overflow-y: auto;
    }
    
    .analysis-card {
        background: var(--bg-card);
        border-radius: var(--border-radius);
        padding: 1.25rem;
    }
    
    .analysis-card h6 {
        font-size: 0.85rem;
        font-weight: 700;
        text-transform: uppercase;
        letter-spacing: 0.5px;
        color: var(--text-secondary);
        margin-bottom: 1rem;
    }
    
    .confidence-meter {
        margin-bottom: 1rem;
    }
    
    .confidence-bar {
        height: 8px;
        background: rgba(0,0,0,0.1);
        border-radius: 4px;
        overflow: hidden;
        margin-top: 0.5rem;
    }
    
    .confidence-fill {
        height: 100%;
        background: linear-gradient(90deg, #dc3545, #ffc107, #28a745);
        transition: width 0.3s;
    }
    
    .confidence-label {
        display: flex;
        justify-content: space-between;
        font-size: 0.85rem;
        color: var(--text-secondary);
        margin-top: 0.3rem;
    }
    
    .classification-select {
        width: 100%;
        padding: 0.6rem;
        border: 1px solid rgba(0,0,0,0.1);
        border-radius: 8px;
        background: var(--bg-body);
        color: var(--text-primary);
        font-size: 0.9rem;
        margin-bottom: 0.75rem;
    }
    
    .metadata-list {
        list-style: none;
        padding: 0;
        margin: 0;
    }
    
    .metadata-item {
        padding: 0.5rem 0;
        border-bottom: 1px solid rgba(0,0,0,0.05);
        font-size: 0.85rem;
    }
    
    .metadata-item:last-child {
        border-bottom: none;
    }
    
    .metadata-label {
        color: var(--text-secondary);
        font-size: 0.75rem;
        text-transform: uppercase;
        letter-spacing: 0.5px;
        margin-bottom: 0.2rem;
    }
    
    .metadata-value {
        color: var(--text-primary);
        font-weight: 500;
    }
    
    .rules-indicator {
        display: flex;
        align-items: center;
        gap: 0.5rem;
        padding: 0.75rem;
        background: var(--accent-light);
        border-radius: 8px;
        font-size: 0.85rem;
        color: var(--accent);
        margin-bottom: 0.75rem;
    }
    
    /* Responsive Design */
    @media (max-width: 1200px) {
        .email-list-sidebar {
            flex: 0 0 280px;
        }
        .email-analysis-sidebar {
            flex: 0 0 260px;
        }
    }
    
    @media (max-width: 992px) {
        .email-container {
            flex-direction: column;
            height: auto;
        }
        
        .email-list-sidebar,
        .email-content-pane,
        .email-analysis-sidebar {
            flex: 0 0 auto;
            max-height: 600px;
        }
    }
    
    @media (max-width: 768px) {
        .email-container {
            gap: 0.5rem;
        }
        
        .email-list-sidebar {
            max-height: 400px;
        }
        
        .email-analysis-sidebar {
            display: none;
        }
        
        .filter-pill {
            font-size: 0.75rem;
            padding: 0.3rem 0.7rem;
        }
    }
    
    /* Keyboard Navigation Hint */
    .keyboard-hint {
        position: fixed;
        bottom: 20px;
        right: 20px;
        background: var(--bg-card);
        padding: 0.5rem 1rem;
        border-radius: 20px;
        box-shadow: 0 4px 15px rgba(0,0,0,0.15);
        font-size: 0.8rem;
        color: var(--text-secondary);
        opacity: 0.7;
        transition: opacity 0.2s;
    }
    
    .keyboard-hint:hover {
        opacity: 1;
    }
    
    /* Loading States */
    .loading-spinner {
        display: flex;
        justify-content: center;
        align-items: center;
        padding: 3rem;
    }
    
    /* Bulk Actions Toolbar */
    .bulk-actions-toolbar {
        display: none;
        align-items: center;
        gap: 1rem;
        padding: 0.75rem 1rem;
        background: var(--accent);
        color: white;
        border-radius: var(--border-radius);
        margin-bottom: 1rem;
    }
    
    .bulk-actions-toolbar.active {
        display: flex;
    }
    
    .bulk-actions-toolbar .btn {
        color: white;
        border-color: rgba(255,255,255,0.3);
    }
    
    .email-checkbox {
        margin-right: 0.5rem;
    }
</style>
{% endblock %}

{% block content %}
<div class="d-flex justify-content-between align-items-center mb-4">
    <div>
        <h2 class="fw-bold mb-1">Email</h2>
        <p class="text-muted mb-0">Administrer og klassificer emails automatisk</p>
    </div>
    <div class="d-flex gap-2">
        <button class="btn btn-light border" onclick="showRulesModal()" title="Email Rules">
            <i class="bi bi-gear me-2"></i>Regler
        </button>
        <button class="btn btn-primary" onclick="manualProcessEmails()" id="processBtn">
            <i class="bi bi-arrow-clockwise me-2"></i>Hent Nye
        </button>
    </div>
</div>

<!-- Bulk Actions Toolbar -->
<div class="bulk-actions-toolbar" id="bulkActionsToolbar">
    <input type="checkbox" id="selectAllCheckbox" onchange="toggleSelectAll()">
    <span id="selectedCount">0</span> valgt
    <div class="ms-auto d-flex gap-2">
        <button class="btn btn-sm" onclick="bulkArchive()">
            <i class="bi bi-archive me-1"></i>Arkivér
        </button>
        <button class="btn btn-sm" onclick="bulkReprocess()">
            <i class="bi bi-arrow-clockwise me-1"></i>Genbehandl
        </button>
        <button class="btn btn-sm" onclick="bulkDelete()">
            <i class="bi bi-trash me-1"></i>Slet
        </button>
        <button class="btn btn-sm" onclick="clearSelection()">
            <i class="bi bi-x-lg"></i>
        </button>
    </div>
</div>

<!-- Main 3-Column Layout -->
<div class="email-container">
    <!-- Left Sidebar - Email List -->
    <div class="email-list-sidebar">
        <div class="email-list-header">
            <input type="text" 
                   class="form-control" 
                   id="emailSearchInput" 
                   placeholder="Søg emails..."
                   style="border-radius: 20px;">
        </div>
        
        <div class="email-list-filters">
            <button class="filter-pill active" data-filter="all" onclick="setFilter('all')">
                Alle <span class="count" id="countAll">0</span>
            </button>
            <button class="filter-pill" data-filter="invoice" onclick="setFilter('invoice')">
                Faktura <span class="count" id="countInvoice">0</span>
            </button>
            <button class="filter-pill" data-filter="order_confirmation" onclick="setFilter('order_confirmation')">
                Ordre <span class="count" id="countOrder">0</span>
            </button>
            <button class="filter-pill" data-filter="freight_note" onclick="setFilter('freight_note')">
                Fragt <span class="count" id="countFreight">0</span>
            </button>
            <button class="filter-pill" data-filter="time_confirmation" onclick="setFilter('time_confirmation')">
                Tid <span class="count" id="countTime">0</span>
            </button>
            <button class="filter-pill" data-filter="case_notification" onclick="setFilter('case_notification')">
                Sag <span class="count" id="countCase">0</span>
            </button>
            <button class="filter-pill" data-filter="general" onclick="setFilter('general')">
                Generel <span class="count" id="countGeneral">0</span>
            </button>
            <button class="filter-pill" data-filter="spam" onclick="setFilter('spam')">
                Spam <span class="count" id="countSpam">0</span>
            </button>
        </div>
        
        <div class="email-list-body" id="emailListBody">
            <div class="loading-spinner">
                <div class="spinner-border text-primary" role="status">
                    <span class="visually-hidden">Loading...</span>
                </div>
            </div>
        </div>
    </div>
    
    <!-- Center Pane - Email Content -->
    <div class="email-content-pane" id="emailContentPane">
        <div class="empty-state">
            <i class="bi bi-envelope"></i>
            <p>Vælg en email for at se indholdet</p>
            <small class="text-muted">Brug ↑↓ eller j/k til at navigere</small>
        </div>
    </div>
    
    <!-- Right Sidebar - AI Analysis -->
    <div class="email-analysis-sidebar" id="emailAnalysisSidebar">
        <div class="analysis-card">
            <h6><i class="bi bi-robot me-2"></i>AI Klassificering</h6>
            <p class="text-muted small mb-3">Vælg en email for at se analyse</p>
        </div>
    </div>
</div>

<!-- Keyboard Shortcuts Hint -->
<div class="keyboard-hint">
    Tryk <kbd>?</kbd> for genveje
</div>

<!-- Email Rules Modal -->
<div class="modal fade" id="emailRulesModal" tabindex="-1">
    <div class="modal-dialog modal-lg">
        <div class="modal-content">
            <div class="modal-header">
                <h5 class="modal-title">Email Regler</h5>
                <button type="button" class="btn-close" data-bs-dismiss="modal"></button>
            </div>
            <div class="modal-body">
                <div class="mb-3">
                    <button class="btn btn-primary" onclick="showCreateRuleForm()">
                        <i class="bi bi-plus-lg me-2"></i>Ny Regel
                    </button>
                </div>
                <div class="table-responsive">
                    <table class="table table-hover">
                        <thead>
                            <tr>
                                <th>Prioritet</th>
                                <th>Navn</th>
                                <th>Handling</th>
                                <th>Status</th>
                                <th>Handlinger</th>
                            </tr>
                        </thead>
                        <tbody id="rulesTableBody">
                            <tr>
                                <td colspan="5" class="text-center py-4">
                                    <div class="spinner-border spinner-border-sm text-primary"></div>
                                </td>
                            </tr>
                        </tbody>
                    </table>
                </div>
            </div>
        </div>
    </div>
</div>

<!-- Keyboard Shortcuts Help Modal -->
<div class="modal fade" id="shortcutsModal" tabindex="-1">
    <div class="modal-dialog">
        <div class="modal-content">
            <div class="modal-header">
                <h5 class="modal-title">Keyboard Shortcuts</h5>
                <button type="button" class="btn-close" data-bs-dismiss="modal"></button>
            </div>
            <div class="modal-body">
                <div class="row g-3">
                    <div class="col-12">
                        <h6 class="text-muted">Navigation</h6>
                        <div class="d-flex justify-content-between mb-2">
                            <span><kbd>j</kbd> eller <kbd>↓</kbd></span>
                            <span class="text-muted">Næste email</span>
                        </div>
                        <div class="d-flex justify-content-between mb-2">
                            <span><kbd>k</kbd> eller <kbd>↑</kbd></span>
                            <span class="text-muted">Forrige email</span>
                        </div>
                        <div class="d-flex justify-content-between mb-2">
                            <span><kbd>Enter</kbd></span>
                            <span class="text-muted">Åbn email</span>
                        </div>
                    </div>
                    <div class="col-12">
                        <h6 class="text-muted">Handlinger</h6>
                        <div class="d-flex justify-content-between mb-2">
                            <span><kbd>e</kbd></span>
                            <span class="text-muted">Arkivér</span>
                        </div>
                        <div class="d-flex justify-content-between mb-2">
                            <span><kbd>r</kbd></span>
                            <span class="text-muted">Genbehandl</span>
                        </div>
                        <div class="d-flex justify-content-between mb-2">
                            <span><kbd>c</kbd></span>
                            <span class="text-muted">Skift klassificering</span>
                        </div>
                        <div class="d-flex justify-content-between mb-2">
                            <span><kbd>x</kbd></span>
                            <span class="text-muted">Vælg/fravælg</span>
                        </div>
                    </div>
                    <div class="col-12">
                        <h6 class="text-muted">Andet</h6>
                        <div class="d-flex justify-content-between mb-2">
                            <span><kbd>/</kbd> eller <kbd>Cmd+K</kbd></span>
                            <span class="text-muted">Søg</span>
                        </div>
                        <div class="d-flex justify-content-between mb-2">
                            <span><kbd>Esc</kbd></span>
                            <span class="text-muted">Luk/fravælg</span>
                        </div>
                    </div>
                </div>
            </div>
        </div>
    </div>
</div>

<!-- Attachment Preview Modal -->
<div class="modal fade" id="attachmentPreviewModal" tabindex="-1" data-bs-backdrop="true">
    <div class="modal-dialog modal-xl modal-dialog-centered">
        <div class="modal-content">
            <div class="modal-header">
                <h5 class="modal-title" id="attachmentPreviewTitle">Vedhæftning</h5>
                <div class="ms-auto d-flex gap-2">
                    <a id="attachmentDownloadBtn" href="#" download class="btn btn-sm btn-primary">
                        <i class="bi bi-download me-1"></i>Download
                    </a>
                    <button type="button" class="btn-close" data-bs-dismiss="modal"></button>
                </div>
            </div>
            <div class="modal-body p-0" style="min-height: 70vh; max-height: 80vh; overflow: auto;">
                <div id="attachmentPreviewContent" class="w-100 h-100 d-flex align-items-center justify-content-center">
                    <div class="spinner-border text-primary" role="status">
                        <span class="visually-hidden">Indlæser...</span>
                    </div>
                </div>
            </div>
        </div>
    </div>
</div>
{% endblock %}

{% block extra_js %}
<script>
console.log('🚀 Email UI JavaScript loaded');

// State Management
let currentFilter = 'all';
let currentEmailId = null;
let emails = [];
let selectedEmails = new Set();
let emailSearchTimeout = null;
let autoRefreshInterval = null;

// Initialize
document.addEventListener('DOMContentLoaded', () => {
    console.log('📧 Email UI: DOMContentLoaded fired');
    console.log('Email list element:', document.getElementById('emailListBody'));
    
    loadEmails();
    loadStats();
    setupEventListeners();
    setupKeyboardShortcuts();
    startAutoRefresh();
});

// Setup Event Listeners
function setupEventListeners() {
    document.getElementById('emailSearchInput').addEventListener('input', (e) => {
        clearTimeout(emailSearchTimeout);
        emailSearchTimeout = setTimeout(() => {
            loadEmails(e.target.value);
        }, 300);
    });
}

// Keyboard Shortcuts
function setupKeyboardShortcuts() {
    document.addEventListener('keydown', (e) => {
        if (e.target.tagName === 'INPUT' || e.target.tagName === 'TEXTAREA' || e.target.tagName === 'SELECT') {
            if (e.key === 'Escape') e.target.blur();
            return;
        }
        
        switch(e.key) {
            case 'j':
            case 'ArrowDown':
                e.preventDefault();
                navigateEmails('next');
                break;
            case 'k':
            case 'ArrowUp':
                e.preventDefault();
                navigateEmails('prev');
                break;
            case 'Enter':
                if (currentEmailId) loadEmailDetail(currentEmailId);
                break;
            case 'e':
                if (currentEmailId) archiveEmail();
                break;
            case 'r':
                if (currentEmailId) reprocessEmail();
                break;
            case 'c':
                if (currentEmailId) document.getElementById('classificationSelect')?.focus();
                break;
            case 'x':
                if (currentEmailId) toggleEmailSelection(currentEmailId);
                break;
            case '/':
                e.preventDefault();
                document.getElementById('emailSearchInput').focus();
                break;
            case 'Escape':
                clearSelection();
                currentEmailId = null;
                showEmptyState();
                break;
            case '?':
                new bootstrap.Modal(document.getElementById('shortcutsModal')).show();
                break;
        }
    });
}

function navigateEmails(direction) {
    if (emails.length === 0) return;
    
    let currentIndex = emails.findIndex(e => e.id === currentEmailId);
    
    if (currentIndex === -1) {
        currentIndex = 0;
    } else if (direction === 'next' && currentIndex < emails.length - 1) {
        currentIndex++;
    } else if (direction === 'prev' && currentIndex > 0) {
        currentIndex--;
    } else {
        return;
    }
    
    const email = emails[currentIndex];
    selectEmail(email.id);
    
    const emailElement = document.querySelector(`[data-email-id="${email.id}"]`);
    if (emailElement) {
        emailElement.scrollIntoView({ behavior: 'smooth', block: 'nearest' });
    }
}

async function loadEmails(searchQuery = '') {
    try {
        let url = '/api/v1/emails?limit=100';
        
        if (currentFilter !== 'all') {
            url += `&classification=${currentFilter}`;
        }
        
        if (searchQuery) {
            url += `&q=${encodeURIComponent(searchQuery)}`;
        }
        
        console.log('Loading emails from:', url);
        const response = await fetch(url);
        
        if (!response.ok) {
            throw new Error(`HTTP ${response.status}: ${response.statusText}`);
        }
        
        emails = await response.json();
        console.log('Loaded emails:', emails.length, 'items');
        
        renderEmailList(emails);
    } catch (error) {
        console.error('Failed to load emails:', error);
        showError('Kunne ikke indlæse emails: ' + error.message);
    }
}

function renderEmailList(emailList) {
    const tbody = document.getElementById('emailListBody');
    
    console.log('Rendering email list:', emailList.length, 'emails');
    
    if (!emailList || emailList.length === 0) {
        tbody.innerHTML = `
            <div class="empty-state">
                <i class="bi bi-inbox"></i>
                <p>Ingen emails fundet</p>
            </div>
        `;
        return;
    }
    
    try {
        tbody.innerHTML = emailList.map(email => {
        const initials = getInitials(email.sender_name || email.sender_email);
        const timeAgo = formatTimeAgo(email.received_date);
        const preview = (email.body_text || '').substring(0, 80);
        const unreadClass = email.is_read ? '' : 'unread';
        const activeClass = email.id === currentEmailId ? 'active' : '';
        const classification = email.classification || 'general';
        
        return `
            <div class="email-item ${unreadClass} ${activeClass}" 
                 data-email-id="${email.id}"
                 onclick="selectEmail(${email.id})">
                <input type="checkbox" 
                       class="email-checkbox" 
                       ${selectedEmails.has(email.id) ? 'checked' : ''}
                       onclick="event.stopPropagation(); toggleEmailSelection(${email.id})">
                <div class="sender-avatar">${initials}</div>
                <div class="email-item-content">
                    <div class="email-item-header">
                        <div class="email-sender">${email.sender_name || email.sender_email}</div>
                        <div class="email-time">${timeAgo}</div>
                    </div>
                    <div class="email-subject">${escapeHtml(email.subject || '(Ingen emne)')}</div>
                    <div class="email-preview">${escapeHtml(preview)}</div>
                    <div class="email-meta">
                        ${!email.is_read ? '<span class="unread-indicator"></span>' : ''}
                        <span class="classification-badge classification-${classification}">
                            ${formatClassification(classification)}
                        </span>
                        ${email.confidence_score ? `<small class="text-muted">${Math.round(email.confidence_score * 100)}%</small>` : ''}
                        ${email.has_attachments ? `<span class="text-muted ms-2"><i class="bi bi-paperclip"></i> ${email.attachment_count || ''}</span>` : ''}
                    </div>
                </div>
            </div>
        `;
        }).join('');
        
        console.log('Email list rendered successfully');
    } catch (error) {
        console.error('Error rendering email list:', error);
        tbody.innerHTML = `
            <div class="empty-state">
                <i class="bi bi-exclamation-triangle text-danger"></i>
                <p>Fejl ved visning af emails</p>
                <small>${error.message}</small>
            </div>
        `;
    }
}

async function selectEmail(emailId) {
    currentEmailId = emailId;
    
    document.querySelectorAll('.email-item').forEach(item => {
        item.classList.toggle('active', item.dataset.emailId == emailId);
    });
    
    await loadEmailDetail(emailId);
}

async function loadEmailDetail(emailId) {
    try {
        console.log('Loading email detail for ID:', emailId);
        const response = await fetch(`/api/v1/emails/${emailId}`);
        
        if (!response.ok) {
            throw new Error(`HTTP ${response.status}: ${response.statusText}`);
        }
        
        const email = await response.json();
        console.log('Email detail loaded:', email);
        
        renderEmailDetail(email);
        renderEmailAnalysis(email);
        
        if (!email.is_read) {
            await markAsRead(emailId);
        }
    } catch (error) {
        console.error('Failed to load email detail:', error);
        showError('Kunne ikke indlæse email detaljer: ' + error.message);
    }
}

function getClassificationActions(email) {
    const actions = [];
    
    switch(email.classification) {
        case 'invoice':
            actions.push(`
                <button class="btn btn-primary w-100" onclick="createSupplierInvoice(${email.id})" title="Opret leverandørfaktura">
                    <i class="bi bi-receipt me-2"></i>Opret Leverandørfaktura
                </button>
            `);
            break;
            
        case 'order_confirmation':
            actions.push(`
                <button class="btn btn-success w-100" onclick="createOrder(${email.id})" title="Opret ordre">
                    <i class="bi bi-cart-check me-2"></i>Opret Ordre
                </button>
            `);
            break;
            
        case 'freight_note':
            actions.push(`
                <button class="btn btn-info w-100" onclick="createFreightNote(${email.id})" title="Registrer fragt">
                    <i class="bi bi-truck me-2"></i>Registrer Fragt
                </button>
            `);
            break;
            
        case 'time_confirmation':
            actions.push(`
                <button class="btn btn-warning w-100" onclick="createTimeEntry(${email.id})" title="Registrer tid">
                    <i class="bi bi-clock me-2"></i>Registrer Tid
                </button>
            `);
            break;
            
        case 'case_notification':
            actions.push(`
                <button class="btn btn-secondary w-100" onclick="createCase(${email.id})" title="Opret sag">
                    <i class="bi bi-folder me-2"></i>Opret Sag
                </button>
            `);
            break;
            
        case 'customer_email':
            actions.push(`
                <button class="btn btn-primary w-100" onclick="linkToCustomer(${email.id})" title="Link til kunde">
                    <i class="bi bi-person-lines-fill me-2"></i>Link til Kunde
                </button>
            `);
            break;
    }
    
    return actions.join('');
}

function renderEmailDetail(email) {
    const pane = document.getElementById('emailContentPane');
    const initials = getInitials(email.sender_name || email.sender_email);
    const timestamp = formatDateTime(email.received_date);
    
    const attachmentsHtml = email.attachments && email.attachments.length > 0 ? `
        <div class="email-attachments">
            <h6 class="mb-3"><i class="bi bi-paperclip me-2"></i>Vedhæftninger (${email.attachments.length})</h6>
            ${email.attachments.map(att => {
                const canPreview = canPreviewFile(att.content_type);
                return `
                    <div class="attachment-item d-flex align-items-center">
                        <i class="bi bi-file-earmark-${getFileIcon(att.content_type)} me-2"></i>
                        <span class="flex-grow-1">${att.filename}</span>
                        <small class="text-muted me-2">${formatFileSize(att.size_bytes || att.file_size)}</small>
                        ${canPreview ? `
                            <button onclick="previewAttachment(${email.id}, ${att.id}, '${escapeHtml(att.filename)}', '${att.content_type}')" 
                                    class="btn btn-sm btn-outline-primary me-1" title="Se">
                                <i class="bi bi-eye"></i>
                            </button>
                        ` : ''}
                        <a href="/api/v1/emails/${email.id}/attachments/${att.id}" 
                           class="btn btn-sm btn-outline-secondary" 
                           download="${att.filename}" 
                           title="Download">
                            <i class="bi bi-download"></i>
                        </a>
                    </div>
                `;
            }).join('')}
        </div>
    ` : '';
    
    pane.innerHTML = `
        <div class="email-content-header">
            <h1 class="email-content-subject">${escapeHtml(email.subject || '(Ingen emne)')}</h1>
            <div class="email-content-meta">
                <div class="sender-info">
                    <div class="sender-avatar" style="width: 48px; height: 48px; font-size: 1rem;">${initials}</div>
                    <div class="sender-details">
                        <div class="sender-name">${email.sender_name || 'Ukendt afsender'}</div>
                        <div class="sender-email">${email.sender_email}</div>
                    </div>
                </div>
                <div class="email-timestamp ms-auto">
                    <i class="bi bi-clock me-1"></i>${timestamp}
                </div>
            </div>
        </div>
        
        <div class="email-actions d-flex justify-content-between align-items-center">
            <div class="d-flex gap-2">
                <button class="btn btn-sm btn-light border" onclick="archiveEmail()" title="Arkivér (e)">
                    <i class="bi bi-archive"></i>
                </button>
                <button class="btn btn-sm btn-light border" onclick="markAsSpam()" title="Marker som spam">
                    <i class="bi bi-exclamation-triangle"></i>
                </button>
                <button class="btn btn-sm btn-light border" onclick="reprocessEmail()" title="Genbehandl (r)">
                    <i class="bi bi-arrow-clockwise"></i>
                </button>
                <button class="btn btn-sm btn-light border text-danger" onclick="deleteEmail()" title="Slet">
                    <i class="bi bi-trash"></i>
                </button>
            </div>
            ${email.attachments && email.attachments.length > 0 ? `
                <div class="d-flex align-items-center gap-2">
                    <span class="text-muted"><i class="bi bi-paperclip me-1"></i>${email.attachments.length} vedhæftning${email.attachments.length > 1 ? 'er' : ''}</span>
                    ${email.attachments.map(att => {
                        const canPreview = canPreviewFile(att.content_type);
                        return `
                            ${canPreview ? `
                                <button onclick="previewAttachment(${email.id}, ${att.id}, '${escapeHtml(att.filename)}', '${att.content_type}')" 
                                        class="btn btn-sm btn-outline-primary" title="Se ${att.filename}">
                                    <i class="bi bi-eye me-1"></i>${att.filename}
                                </button>
                            ` : `
                                <a href="/api/v1/emails/${email.id}/attachments/${att.id}" 
                                   class="btn btn-sm btn-outline-secondary" 
                                   download="${att.filename}" 
                                   title="Download ${att.filename}">
                                    <i class="bi bi-download me-1"></i>${att.filename}
                                </a>
                            `}
                        `;
                    }).join('')}
                </div>
            ` : ''}
        </div>
        
        <div class="email-body">
            ${email.body_html ? `<iframe srcdoc="${email.body_html.replace(/"/g, '&quot;')}"></iframe>` : 
              `<pre style="white-space: pre-wrap; font-family: inherit;">${escapeHtml(email.body_text || 'Ingen indhold')}</pre>`}
        </div>
    `;
}

function renderEmailAnalysis(email) {
    const sidebar = document.getElementById('emailAnalysisSidebar');
    const classification = email.classification || 'general';
    const confidence = email.confidence_score || 0;
    
    sidebar.innerHTML = `
        ${getClassificationActions(email) ? `
        <div class="analysis-card">
            <h6><i class="bi bi-lightning-charge-fill me-2"></i>Hurtig Action</h6>
            <div class="d-flex flex-column gap-2">
                ${getClassificationActions(email)}
            </div>
        </div>
        ` : ''}
        
        <div class="analysis-card">
            <h6><i class="bi bi-robot me-2"></i>AI Klassificering</h6>
            
            <div class="confidence-meter">
                <div class="confidence-bar">
                    <div class="confidence-fill" style="width: ${confidence * 100}%"></div>
                </div>
                <div class="confidence-label">
                    <span>Sikkerhed</span>
                    <span><strong>${Math.round(confidence * 100)}%</strong></span>
                </div>
            </div>
            
            <select class="classification-select" id="classificationSelect" onchange="updateClassification()">
                <option value="invoice" ${classification === 'invoice' ? 'selected' : ''}>📄 Faktura</option>
                <option value="order_confirmation" ${classification === 'order_confirmation' ? 'selected' : ''}>📦 Ordrebekræftelse</option>
                <option value="freight_note" ${classification === 'freight_note' ? 'selected' : ''}>🚚 Fragtnote</option>
                <option value="time_confirmation" ${classification === 'time_confirmation' ? 'selected' : ''}>⏰ Tidsregistrering</option>
                <option value="case_notification" ${classification === 'case_notification' ? 'selected' : ''}>📋 Sagsnotifikation</option>
                <option value="bankruptcy" ${classification === 'bankruptcy' ? 'selected' : ''}>⚠️ Konkurs</option>
                <option value="spam" ${classification === 'spam' ? 'selected' : ''}>🚫 Spam</option>
                <option value="general" ${classification === 'general' ? 'selected' : ''}>📧 Generel</option>
            </select>
            
            <button class="btn btn-sm btn-primary w-100" onclick="saveClassification()">
                <i class="bi bi-check-lg me-2"></i>Gem Klassificering
            </button>
        </div>
        
        <div class="analysis-card">
            <h6><i class="bi bi-info-circle me-2"></i>Metadata</h6>
            <ul class="metadata-list">
                <li class="metadata-item">
                    <div class="metadata-label">Message ID</div>
                    <div class="metadata-value" style="font-size: 0.7rem; word-break: break-all;">${email.message_id || 'N/A'}</div>
                </li>
                <li class="metadata-item">
                    <div class="metadata-label">Modtaget</div>
                    <div class="metadata-value">${formatDateTime(email.received_date)}</div>
                </li>
                <li class="metadata-item">
                    <div class="metadata-label">Status</div>
                    <div class="metadata-value">${email.status || 'new'}</div>
                </li>
                ${email.extracted_invoice_number ? `
                <li class="metadata-item">
                    <div class="metadata-label">Fakturanummer</div>
                    <div class="metadata-value">${email.extracted_invoice_number}</div>
                </li>
                ` : ''}
                ${email.extracted_amount ? `
                <li class="metadata-item">
                    <div class="metadata-label">Beløb</div>
                    <div class="metadata-value">${email.extracted_amount} ${email.extracted_currency || 'DKK'}</div>
                </li>
                ` : ''}
            </ul>
        </div>
        
        ${email.matched_rules && email.matched_rules.length > 0 ? `
        <div class="analysis-card">
            <h6><i class="bi bi-lightning-charge me-2"></i>Matchede Regler</h6>
            <div class="rules-indicator">
                <i class="bi bi-check-circle-fill"></i>
                <span>${email.matched_rules.length} regel(er) matchet</span>
            </div>
        </div>
        ` : ''}
    `;
}

function showEmptyState() {
    document.getElementById('emailContentPane').innerHTML = `
        <div class="empty-state">
            <i class="bi bi-envelope"></i>
            <p>Vælg en email for at se indholdet</p>
            <small class="text-muted">Brug ↑↓ eller j/k til at navigere</small>
        </div>
    `;
    
    document.getElementById('emailAnalysisSidebar').innerHTML = `
        <div class="analysis-card">
            <h6><i class="bi bi-robot me-2"></i>AI Klassificering</h6>
            <p class="text-muted small mb-3">Vælg en email for at se analyse</p>
        </div>
    `;
}

function setFilter(filter) {
    currentFilter = filter;
    
    document.querySelectorAll('.filter-pill').forEach(pill => {
        pill.classList.toggle('active', pill.dataset.filter === filter);
    });
    
    loadEmails();
}

async function loadStats() {
    try {
        const response = await fetch('/api/v1/emails/stats/summary');
        const stats = await response.json();
        
        document.getElementById('countAll').textContent = stats.total_emails || 0;
        document.getElementById('countInvoice').textContent = stats.invoices || 0;
        document.getElementById('countOrder').textContent = 0;
        document.getElementById('countFreight').textContent = 0;
        document.getElementById('countTime').textContent = stats.time_confirmations || 0;
        document.getElementById('countCase').textContent = 0;
        document.getElementById('countGeneral').textContent = stats.total_emails - stats.invoices - stats.time_confirmations || 0;
        document.getElementById('countSpam').textContent = stats.spam_emails || 0;
    } catch (error) {
        console.error('Failed to load stats:', error);
    }
}

async function markAsRead(emailId) {
    try {
        await fetch(`/api/v1/emails/${emailId}`, {
            method: 'PUT',
            headers: { 'Content-Type': 'application/json' },
            body: JSON.stringify({ is_read: true })
        });
    } catch (error) {
        console.error('Failed to mark as read:', error);
    }
}

async function archiveEmail() {
    if (!currentEmailId) return;
    
    try {
        const response = await fetch(`/api/v1/emails/${currentEmailId}?status=archived`, {
            method: 'PUT'
        });
        
        if (!response.ok) throw new Error('Archive failed');
        
        showSuccess('Email arkiveret');
        currentEmailId = null;
        document.getElementById('emailContentPane').innerHTML = '<div class="empty-state"><i class="bi bi-inbox"></i><p>Vælg en email for at se indholdet</p></div>';
        document.getElementById('emailAnalysisSidebar').innerHTML = '';
        loadEmails();
    } catch (error) {
        showError('Kunne ikke arkivere email');
    }
}

async function markAsSpam() {
    if (!currentEmailId) return;
    
    if (!confirm('Marker denne email som spam?')) return;
    
    try {
        const response = await fetch(`/api/v1/emails/${currentEmailId}/classify`, {
            method: 'PUT',
            headers: { 'Content-Type': 'application/json' },
            body: JSON.stringify({ classification: 'spam', confidence: 1.0 })
        });
        
        if (!response.ok) throw new Error('Classify failed');
        
        showSuccess('Markeret som spam');
        currentEmailId = null;
        document.getElementById('emailContentPane').innerHTML = '<div class="empty-state"><i class="bi bi-inbox"></i><p>Vælg en email for at se indholdet</p></div>';
        document.getElementById('emailAnalysisSidebar').innerHTML = '';
        loadEmails();
    } catch (error) {
        showError('Kunne ikke markere som spam');
    }
}

async function reprocessEmail() {
    if (!currentEmailId) return;
    
    try {
        const btn = event.target.closest('button');
        btn.disabled = true;
        btn.innerHTML = '<span class="spinner-border spinner-border-sm"></span>';
        
        const response = await fetch(`/api/v1/emails/${currentEmailId}/reprocess`, {
            method: 'POST'
        });
        
        if (!response.ok) throw new Error('Reprocess failed');
        
        const result = await response.json();
        showSuccess(`Genbehandlet: ${result.classification} (${Math.round(result.confidence * 100)}%)`);
        await loadEmailDetail(currentEmailId);
        loadEmails();
    } catch (error) {
        showError('Kunne ikke genbehandle email');
    } finally {
        if (btn) {
            btn.disabled = false;
            btn.innerHTML = '<i class="bi bi-arrow-clockwise"></i>';
        }
    }
}

async function deleteEmail() {
    if (!currentEmailId) return;
    
    if (!confirm('Slet denne email permanent?')) return;
    
    try {
        const response = await fetch(`/api/v1/emails/${currentEmailId}`, {
            method: 'DELETE'
        });
        
        if (!response.ok) throw new Error('Delete failed');
        
        showSuccess('Email slettet');
        currentEmailId = null;
        showEmptyState();
        loadEmails();
    } catch (error) {
        showError('Kunne ikke slette email');
    }
}

// Classification Action Handlers
async function createSupplierInvoice(emailId) {
    try {
        // Get email data to pre-fill form
        const response = await fetch(`/api/v1/emails/${emailId}`);
        if (!response.ok) throw new Error('Failed to fetch email');
        
        const email = await response.json();
        
        // Store email context in sessionStorage
        sessionStorage.setItem('supplierInvoiceContext', JSON.stringify({
            emailId: emailId,
            subject: email.subject,
            sender: email.sender_email,
            attachments: email.attachments
        }));
        
        // Redirect to supplier invoice page (it will auto-open modal)
        window.location.href = '/billing/supplier-invoices';
    } catch (error) {
        showError('Kunne ikke åbne leverandørfaktura formular');
    }
}

async function createOrder(emailId) {
    showError('Ordre-modul er ikke implementeret endnu');
}

async function createFreightNote(emailId) {
    showError('Fragt-modul er ikke implementeret endnu');
}

async function createTimeEntry(emailId) {
    showError('Tidsregistrering-modul er ikke implementeret endnu');
}

async function createCase(emailId) {
    showError('Sags-modul er ikke implementeret endnu');
}

async function linkToCustomer(emailId) {
    showError('Kunde-linking er ikke implementeret endnu');
}

async function saveClassification() {
    if (!currentEmailId) return;
    
    const classification = document.getElementById('classificationSelect').value;
    
    try {
        await fetch(`/api/v1/emails/${currentEmailId}/classify`, {
            method: 'PUT',
            headers: { 'Content-Type': 'application/json' },
            body: JSON.stringify({ 
                classification: classification,
                confidence: 0.9
            })
        });
        
        showSuccess('Klassificering gemt');
        loadEmails();
        loadEmailDetail(currentEmailId);
    } catch (error) {
        showError('Kunne ikke gemme klassificering');
    }
}

async function manualProcessEmails() {
    const btn = document.getElementById('processBtn');
    btn.disabled = true;
    btn.innerHTML = '<span class="spinner-border spinner-border-sm me-2"></span>Henter...';
    
    try {
        const response = await fetch('/api/v1/emails/process', {
            method: 'POST'
        });
        const result = await response.json();
        
        showSuccess(`Hentet ${result.stats.fetched} nye emails`);
        loadEmails();
        loadStats();
    } catch (error) {
        showError('Kunne ikke hente emails');
    } finally {
        btn.disabled = false;
        btn.innerHTML = '<i class="bi bi-arrow-clockwise me-2"></i>Hent Nye';
    }
}

function toggleEmailSelection(emailId) {
    if (selectedEmails.has(emailId)) {
        selectedEmails.delete(emailId);
    } else {
        selectedEmails.add(emailId);
    }
    
    updateBulkToolbar();
    renderEmailList(emails);
}

function toggleSelectAll() {
    const checkbox = document.getElementById('selectAllCheckbox');
    
    if (checkbox.checked) {
        emails.forEach(email => selectedEmails.add(email.id));
    } else {
        selectedEmails.clear();
    }
    
    updateBulkToolbar();
    renderEmailList(emails);
}

function clearSelection() {
    selectedEmails.clear();
    document.getElementById('selectAllCheckbox').checked = false;
    updateBulkToolbar();
    renderEmailList(emails);
}

function updateBulkToolbar() {
    const toolbar = document.getElementById('bulkActionsToolbar');
    const count = selectedEmails.size;
    
    if (count > 0) {
        toolbar.classList.add('active');
        document.getElementById('selectedCount').textContent = count;
    } else {
        toolbar.classList.remove('active');
    }
}

async function bulkArchive() {
    if (selectedEmails.size === 0) return;
    
    const count = selectedEmails.size;
    
    try {
        const response = await fetch('/api/v1/emails/bulk/archive', {
            method: 'POST',
            headers: { 'Content-Type': 'application/json' },
            body: JSON.stringify([...selectedEmails])
        });
        
        if (!response.ok) throw new Error('Bulk archive failed');
        
        showSuccess(`${count} emails arkiveret`);
        clearSelection();
        loadEmails();
    } catch (error) {
        showError('Kunne ikke arkivere emails');
    }
}

async function bulkReprocess() {
    if (selectedEmails.size === 0) return;
    
    const count = selectedEmails.size;
    
    try {
        const response = await fetch('/api/v1/emails/bulk/reprocess', {
            method: 'POST',
            headers: { 'Content-Type': 'application/json' },
            body: JSON.stringify([...selectedEmails])
        });
        
        if (!response.ok) throw new Error('Bulk reprocess failed');
        
        showSuccess(`${count} emails genbehandlet`);
        clearSelection();
        loadEmails();
    } catch (error) {
        showError('Kunne ikke genbehandle emails');
    }
}

async function bulkDelete() {
    if (selectedEmails.size === 0) return;
    
    const count = selectedEmails.size;
    if (!confirm(`Slet ${count} emails permanent?`)) return;
    
    try {
        const response = await fetch('/api/v1/emails/bulk/delete', {
            method: 'POST',
            headers: { 'Content-Type': 'application/json' },
            body: JSON.stringify([...selectedEmails])
        });
        
        if (!response.ok) throw new Error('Bulk delete failed');
        
        showSuccess(`${count} emails slettet`);
        clearSelection();
        loadEmails();
    } catch (error) {
        showError('Kunne ikke slette emails');
    }
}

async function showRulesModal() {
    const modal = new bootstrap.Modal(document.getElementById('emailRulesModal'));
    modal.show();
    
    try {
        const response = await fetch('/api/v1/email-rules');
        const rules = await response.json();
        
        const tbody = document.getElementById('rulesTableBody');
        tbody.innerHTML = rules.map(rule => `
            <tr>
                <td><span class="badge bg-secondary">${rule.priority}</span></td>
                <td>${rule.name}</td>
                <td>${rule.action_type}</td>
                <td>
                    <span class="badge bg-${rule.enabled ? 'success' : 'secondary'}">
                        ${rule.enabled ? 'Aktiv' : 'Inaktiv'}
                    </span>
                </td>
                <td>
                    <button class="btn btn-sm btn-light border" onclick="editRule(${rule.id})">
                        <i class="bi bi-pencil"></i>
                    </button>
                    <button class="btn btn-sm btn-light border text-danger" onclick="deleteRule(${rule.id})">
                        <i class="bi bi-trash"></i>
                    </button>
                </td>
            </tr>
        `).join('');
    } catch (error) {
        console.error('Failed to load rules:', error);
    }
}

function startAutoRefresh() {
    autoRefreshInterval = setInterval(() => {
        loadEmails();
        loadStats();
    }, 30000);
}

function getInitials(name) {
    if (!name) return '?';
    const parts = name.split(/[\s@]+/);
    return parts.slice(0, 2).map(p => p[0].toUpperCase()).join('');
}

function formatTimeAgo(dateString) {
    const date = new Date(dateString);
    const now = new Date();
    const seconds = Math.floor((now - date) / 1000);
    
    if (seconds < 60) return 'Lige nu';
    if (seconds < 3600) return `${Math.floor(seconds / 60)}m`;
    if (seconds < 86400) return `${Math.floor(seconds / 3600)}t`;
    if (seconds < 604800) return `${Math.floor(seconds / 86400)}d`;
    
    return date.toLocaleDateString('da-DK', { day: 'numeric', month: 'short' });
}

function formatDateTime(dateString) {
    const date = new Date(dateString);
    return date.toLocaleString('da-DK', { 
        day: 'numeric', 
        month: 'long', 
        year: 'numeric',
        hour: '2-digit',
        minute: '2-digit'
    });
}

function formatClassification(classification) {
    const map = {
        'invoice': 'Faktura',
        'order_confirmation': 'Ordre',
        'freight_note': 'Fragt',
        'time_confirmation': 'Tid',
        'case_notification': 'Sag',
        'bankruptcy': 'Konkurs',
        'spam': 'Spam',
        'general': 'Generel'
    };
    return map[classification] || classification;
}

function getFileIcon(contentType) {
    if (contentType?.includes('pdf')) return 'pdf';
    if (contentType?.includes('image')) return 'image';
    if (contentType?.includes('zip') || contentType?.includes('compressed')) return 'zip';
    if (contentType?.includes('word') || contentType?.includes('document')) return 'word';
    if (contentType?.includes('excel') || contentType?.includes('spreadsheet')) return 'excel';
    return 'text';
}

function formatFileSize(bytes) {
    if (!bytes) return 'N/A';
    if (bytes < 1024) return bytes + ' B';
    if (bytes < 1048576) return (bytes / 1024).toFixed(1) + ' KB';
    return (bytes / 1048576).toFixed(1) + ' MB';
}

function canPreviewFile(contentType) {
    if (!contentType) return false;
    const previewable = [
        'application/pdf',
        'image/jpeg',
        'image/jpg', 
        'image/png',
        'image/gif',
        'image/webp',
        'text/plain',
        'text/html'
    ];
    return previewable.some(type => contentType.toLowerCase().includes(type.toLowerCase()));
}

function previewAttachment(emailId, attachmentId, filename, contentType) {
    const modal = new bootstrap.Modal(document.getElementById('attachmentPreviewModal'));
    const titleEl = document.getElementById('attachmentPreviewTitle');
    const contentEl = document.getElementById('attachmentPreviewContent');
    const downloadBtn = document.getElementById('attachmentDownloadBtn');
    
    // Set title and download link
    titleEl.textContent = filename;
    downloadBtn.href = `/api/v1/emails/${emailId}/attachments/${attachmentId}`;
    downloadBtn.download = filename;
    
    // Show loading spinner
    contentEl.innerHTML = `
        <div class="spinner-border text-primary" role="status">
            <span class="visually-hidden">Indlæser...</span>
        </div>
    `;
    
    // Show modal
    modal.show();
    
    // Build preview based on content type
    const url = `/api/v1/emails/${emailId}/attachments/${attachmentId}`;
    
    if (contentType.includes('pdf')) {
        // PDF preview using embed
        contentEl.innerHTML = `
            <embed src="${url}" 
                   type="application/pdf" 
                   width="100%" 
                   height="100%" 
                   style="min-height: 70vh;" />
        `;
    } else if (contentType.startsWith('image/')) {
        // Image preview
        contentEl.innerHTML = `
            <img src="${url}" 
                 alt="${escapeHtml(filename)}" 
                 style="max-width: 100%; height: auto; display: block; margin: 0 auto;" />
        `;
    } else if (contentType.includes('text/')) {
        // Text preview
        fetch(url)
            .then(response => response.text())
            .then(text => {
                contentEl.innerHTML = `
                    <pre style="padding: 2rem; margin: 0; white-space: pre-wrap; word-wrap: break-word; font-family: monospace; text-align: left;">${escapeHtml(text)}</pre>
                `;
            })
            .catch(error => {
                contentEl.innerHTML = `
                    <div class="alert alert-danger m-4">
                        <i class="bi bi-exclamation-triangle me-2"></i>
                        Kunne ikke indlæse fil: ${error.message}
                    </div>
                `;
            });
    } else {
        contentEl.innerHTML = `
            <div class="alert alert-info m-4">
                <i class="bi bi-info-circle me-2"></i>
                Denne filtype kan ikke vises. Brug download-knappen.
            </div>
        `;
    }
}

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

function showSuccess(message) {
    alert(message);
}

function showError(message) {
    alert('Fejl: ' + message);
}

window.addEventListener('beforeunload', () => {
    if (autoRefreshInterval) {
        clearInterval(autoRefreshInterval);
    }
});
</script>
{% endblock %}