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

{% block title %}Leverandør Detaljer - BMC Hub{% endblock %}

{% block extra_css %}
<style>
    .vendor-header {
        background: linear-gradient(135deg, var(--accent) 0%, #1e6ba8 100%);
        padding: 2rem;
        border-radius: var(--border-radius);
        color: white;
        margin-bottom: 2rem;
    }
    
    .vendor-avatar-large {
        width: 80px;
        height: 80px;
        border-radius: 16px;
        background: rgba(255,255,255,0.2);
        color: white;
        display: flex;
        align-items: center;
        justify-content: center;
        font-weight: bold;
        font-size: 2rem;
        border: 3px solid rgba(255,255,255,0.3);
    }
    
    .vertical-nav {
        position: sticky;
        top: 100px;
    }
    
    .vertical-nav .nav-link {
        color: var(--text-secondary);
        padding: 0.75rem 1rem;
        border-radius: 8px;
        margin-bottom: 0.5rem;
        transition: all 0.2s;
        border-left: 3px solid transparent;
    }
    
    .vertical-nav .nav-link:hover,
    .vertical-nav .nav-link.active {
        background: var(--accent-light);
        color: var(--accent);
        border-left-color: var(--accent);
    }
    
    .info-row {
        padding: 1rem 0;
        border-bottom: 1px solid rgba(0,0,0,0.05);
    }
    
    .info-row:last-child {
        border-bottom: none;
    }
    
    .info-label {
        color: var(--text-secondary);
        font-size: 0.9rem;
        font-weight: 500;
        margin-bottom: 0.25rem;
    }
    
    .info-value {
        color: var(--text-primary);
        font-size: 1rem;
    }
    
    .category-badge-large {
        padding: 0.5rem 1rem;
        border-radius: 20px;
        font-size: 1rem;
        font-weight: 500;
        display: inline-block;
    }
    
    .priority-indicator {
        width: 50px;
        height: 50px;
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        font-weight: bold;
        font-size: 1.25rem;
    }
</style>
{% endblock %}

{% block content %}
    <!-- Vendor Header -->
    <div class="vendor-header" id="vendorHeader">
        <div class="container-fluid">
            <div class="row align-items-center">
                <div class="col-auto">
                    <div class="vendor-avatar-large" id="vendorAvatar"></div>
                </div>
                <div class="col">
                    <div class="d-flex align-items-center gap-3 mb-2">
                        <h2 class="mb-0 fw-bold" id="vendorName">Loading...</h2>
                        <span class="badge bg-white text-dark" id="vendorStatus"></span>
                    </div>
                    <div class="d-flex gap-4 text-white-50">
                        <span id="vendorDomain"></span>
                        <span id="vendorCategory"></span>
                    </div>
                </div>
                <div class="col-auto">
                    <button class="btn btn-light" onclick="editVendor()">
                        <i class="bi bi-pencil me-2"></i>Rediger
                    </button>
                </div>
            </div>
        </div>
    </div>

    <div class="container-fluid">
        <div class="row">
            <!-- Vertical Navigation -->
            <div class="col-lg-2">
                <div class="vertical-nav">
                    <nav class="nav flex-column">
                        <a class="nav-link active" href="#oversigt" data-tab="oversigt">
                            <i class="bi bi-info-circle me-2"></i>Oversigt
                        </a>
                        <a class="nav-link" href="#produkter" data-tab="produkter">
                            <i class="bi bi-box-seam me-2"></i>Produkter
                        </a>
                        <a class="nav-link" href="#fakturaer" data-tab="fakturaer">
                            <i class="bi bi-receipt me-2"></i>Fakturaer
                        </a>
                        <a class="nav-link" href="#aktivitet" data-tab="aktivitet">
                            <i class="bi bi-clock-history me-2"></i>Aktivitet
                        </a>
                    </nav>
                </div>
            </div>

            <!-- Content Area -->
            <div class="col-lg-10">
                <div class="tab-content">
                    <!-- Oversigt Tab -->
                    <div class="tab-pane fade show active" id="oversigt">
                        <div class="row g-4">
                            <!-- Vendor Information -->
                            <div class="col-lg-6">
                                <div class="card p-4">
                                    <h5 class="mb-4 fw-bold">Leverandør Information</h5>
                                    <div id="vendorInfo">
                                        <div class="text-center py-5">
                                            <div class="spinner-border text-primary" role="status">
                                                <span class="visually-hidden">Loading...</span>
                                            </div>
                                        </div>
                                    </div>
                                </div>
                            </div>

                            <!-- Contact & System Info -->
                            <div class="col-lg-6">
                                <div class="card p-4 mb-4">
                                    <h5 class="mb-4 fw-bold">Kontakt Information</h5>
                                    <div id="contactInfo">
                                        <div class="text-center py-5">
                                            <div class="spinner-border text-primary" role="status">
                                                <span class="visually-hidden">Loading...</span>
                                            </div>
                                        </div>
                                    </div>
                                </div>
                                
                                <div class="card p-4">
                                    <h5 class="mb-4 fw-bold">System Information</h5>
                                    <div id="systemInfo">
                                        <div class="text-center py-5">
                                            <div class="spinner-border text-primary" role="status">
                                                <span class="visually-hidden">Loading...</span>
                                            </div>
                                        </div>
                                    </div>
                                </div>
                            </div>
                        </div>
                    </div>

                    <!-- Produkter Tab -->
                    <div class="tab-pane fade" id="produkter">
                        <div class="card p-4">
                            <h5 class="mb-4 fw-bold">Produkter fra denne leverandør</h5>
                            <p class="text-muted">Produkt tracking kommer snart...</p>
                        </div>
                    </div>

                    <!-- Fakturaer Tab -->
                    <div class="tab-pane fade" id="fakturaer">
                        <div class="card p-4">
                            <div class="d-flex justify-content-between align-items-center mb-4">
                                <h5 class="mb-0 fw-bold">Leverandør Fakturaer</h5>
                                <span class="badge bg-primary" id="invoiceCount">0</span>
                            </div>
                            <div class="table-responsive">
                                <table class="table table-hover align-middle">
                                    <thead>
                                        <tr>
                                            <th>Fakturanr.</th>
                                            <th>Dato</th>
                                            <th>Forfald</th>
                                            <th>Beløb</th>
                                            <th>Status</th>
                                            <th class="text-end">Handling</th>
                                        </tr>
                                    </thead>
                                    <tbody id="invoicesTableBody">
                                        <tr>
                                            <td colspan="6" class="text-center py-4">
                                                <div class="spinner-border text-primary" role="status"></div>
                                            </td>
                                        </tr>
                                    </tbody>
                                </table>
                            </div>
                        </div>
                    </div>

                    <!-- Aktivitet Tab -->
                    <div class="tab-pane fade" id="aktivitet">
                        <div class="card p-4">
                            <h5 class="mb-4 fw-bold">Aktivitetslog</h5>
                            <p class="text-muted">Aktivitetshistorik kommer snart...</p>
                        </div>
                    </div>
                </div>
            </div>
        </div>
    </div>

    <!-- Edit Vendor Modal -->
    <div class="modal fade" id="editVendorModal" tabindex="-1">
        <div class="modal-dialog modal-lg">
            <div class="modal-content">
                <div class="modal-header">
                    <h5 class="modal-title"><i class="bi bi-pencil me-2"></i>Rediger Leverandør</h5>
                    <button type="button" class="btn-close" data-bs-dismiss="modal"></button>
                </div>
                <div class="modal-body">
                    <form id="editVendorForm">
                        <div class="row mb-3">
                            <div class="col-md-8">
                                <label class="form-label">Navn *</label>
                                <input type="text" class="form-control" id="editName" required>
                            </div>
                            <div class="col-md-4">
                                <label class="form-label">CVR-nummer</label>
                                <input type="text" class="form-control" id="editCvr" maxlength="8" pattern="[0-9]{8}">
                            </div>
                        </div>

                        <div class="row mb-3">
                            <div class="col-md-6">
                                <label class="form-label">Kategori</label>
                                <select class="form-select" id="editCategory">
                                    <option value="IT & Software">IT & Software</option>
                                    <option value="Telefoni & Internet">Telefoni & Internet</option>
                                    <option value="Hardware">Hardware</option>
                                    <option value="Cloud Services">Cloud Services</option>
                                    <option value="Hosting">Hosting</option>
                                    <option value="Security">Security</option>
                                    <option value="Consulting">Consulting</option>
                                    <option value="Andet">Andet</option>
                                </select>
                            </div>
                            <div class="col-md-6">
                                <label class="form-label">Domæne</label>
                                <input type="text" class="form-control" id="editDomain" placeholder="example.com">
                            </div>
                        </div>

                        <div class="row mb-3">
                            <div class="col-md-6">
                                <label class="form-label">Email</label>
                                <input type="email" class="form-control" id="editEmail">
                            </div>
                            <div class="col-md-6">
                                <label class="form-label">Telefon</label>
                                <input type="tel" class="form-control" id="editPhone">
                            </div>
                        </div>

                        <div class="row mb-3">
                            <div class="col-md-8">
                                <label class="form-label">Adresse</label>
                                <input type="text" class="form-control" id="editAddress">
                            </div>
                            <div class="col-md-4">
                                <label class="form-label">Postnr. & By</label>
                                <input type="text" class="form-control" id="editCity">
                            </div>
                        </div>

                        <div class="mb-3">
                            <label class="form-label">e-conomic Leverandør Nr.</label>
                            <input type="text" class="form-control" id="editEconomicNumber">
                            <div class="form-text">Til integration med e-conomic</div>
                        </div>

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

                        <div class="form-check form-switch">
                            <input class="form-check-input" type="checkbox" id="editIsActive">
                            <label class="form-check-label" for="editIsActive">Aktiv leverandør</label>
                        </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="saveVendor()">
                        <i class="bi bi-save me-2"></i>Gem Ændringer
                    </button>
                </div>
            </div>
        </div>
    </div>

{% endblock %}

{% block extra_js %}
<script>
const vendorId = {{ vendor_id }};

async function loadVendor() {
    try {
        const response = await fetch(`/api/v1/vendors/${vendorId}`);
        if (!response.ok) {
            throw new Error('Vendor not found');
        }
        const vendor = await response.json();
        displayVendor(vendor);
    } catch (error) {
        console.error('Error loading vendor:', error);
        document.getElementById('vendorName').textContent = 'Fejl ved indlæsning';
    }
}

function displayVendor(vendor) {
    // Header
    document.getElementById('vendorName').textContent = vendor.name;
    document.getElementById('vendorAvatar').textContent = getInitials(vendor.name);
    document.getElementById('vendorStatus').textContent = vendor.is_active ? 'Aktiv' : 'Inaktiv';
    document.getElementById('vendorStatus').className = `badge ${vendor.is_active ? 'bg-success' : 'bg-secondary'}`;
    document.getElementById('vendorDomain').innerHTML = vendor.domain ? `<i class="bi bi-globe me-2"></i>${vendor.domain}` : '';
    document.getElementById('vendorCategory').innerHTML = `${getCategoryIcon(vendor.category)} ${vendor.category}`;
    
    // Update page title
    document.title = `${vendor.name} - BMC Hub`;
    
    // Vendor Info
    document.getElementById('vendorInfo').innerHTML = `
        ${vendor.cvr_number ? `
        <div class="info-row">
            <div class="info-label">CVR-nummer</div>
            <div class="info-value fw-semibold">${escapeHtml(vendor.cvr_number)}</div>
        </div>
        ` : ''}
        <div class="info-row">
            <div class="info-label">Kategori</div>
            <div class="info-value">
                <span class="category-badge-large bg-light">
                    ${getCategoryIcon(vendor.category)} ${escapeHtml(vendor.category)}
                </span>
            </div>
        </div>
        ${vendor.economic_supplier_number ? `
        <div class="info-row">
            <div class="info-label">e-conomic Leverandør Nr.</div>
            <div class="info-value">${vendor.economic_supplier_number}</div>
        </div>
        ` : ''}
        ${vendor.notes ? `
        <div class="info-row">
            <div class="info-label">Noter</div>
            <div class="info-value">${escapeHtml(vendor.notes)}</div>
        </div>
        ` : ''}
    `;
    
    // Contact Info
    document.getElementById('contactInfo').innerHTML = `
        ${vendor.email ? `
        <div class="info-row">
            <div class="info-label">Email</div>
            <div class="info-value">
                <a href="mailto:${escapeHtml(vendor.email)}" class="text-decoration-none">
                    <i class="bi bi-envelope me-2"></i>${escapeHtml(vendor.email)}
                </a>
            </div>
        </div>
        ` : ''}
        ${vendor.phone ? `
        <div class="info-row">
            <div class="info-label">Telefon</div>
            <div class="info-value">
                <a href="tel:${escapeHtml(vendor.phone)}" class="text-decoration-none">
                    <i class="bi bi-telephone me-2"></i>${escapeHtml(vendor.phone)}
                </a>
            </div>
        </div>
        ` : ''}
        ${vendor.website ? `
        <div class="info-row">
            <div class="info-label">Website</div>
            <div class="info-value">
                <a href="${escapeHtml(vendor.website)}" target="_blank" class="text-decoration-none">
                    <i class="bi bi-globe me-2"></i>${escapeHtml(vendor.website)}
                </a>
            </div>
        </div>
        ` : ''}
        ${vendor.address ? `
        <div class="info-row">
            <div class="info-label">Adresse</div>
            <div class="info-value">
                <i class="bi bi-geo-alt me-2"></i>
                ${escapeHtml(vendor.address)}
                ${vendor.postal_code || vendor.city ? `<br>${vendor.postal_code ? escapeHtml(vendor.postal_code) + ' ' : ''}${vendor.city ? escapeHtml(vendor.city) : ''}` : ''}
                ${vendor.country && vendor.country !== 'Danmark' ? `<br>${escapeHtml(vendor.country)}` : ''}
            </div>
        </div>
        ` : ''}
        ${vendor.email_pattern ? `
        <div class="info-row">
            <div class="info-label">Email Pattern</div>
            <div class="info-value"><code>${escapeHtml(vendor.email_pattern)}</code></div>
        </div>
        ` : ''}
    `;
    
    // System Info
    document.getElementById('systemInfo').innerHTML = `
        <div class="info-row">
            <div class="info-label">Oprettet</div>
            <div class="info-value">${formatDate(vendor.created_at)}</div>
        </div>
        ${vendor.updated_at ? `
        <div class="info-row">
            <div class="info-label">Sidst opdateret</div>
            <div class="info-value">${formatDate(vendor.updated_at)}</div>
        </div>
        ` : ''}
        <div class="info-row">
            <div class="info-label">ID</div>
            <div class="info-value"><code>#${vendor.id}</code></div>
        </div>
    `;
    
    // Load invoices
    loadVendorInvoices();
}

async function loadVendorInvoices() {
    try {
        const response = await fetch(`/api/v1/supplier-invoices?vendor_id=${vendorId}`);
        if (!response.ok) throw new Error('Failed to load invoices');
        
        const invoices = await response.json();
        displayInvoices(invoices);
    } catch (error) {
        console.error('Error loading invoices:', error);
        document.getElementById('invoicesTableBody').innerHTML = `
            <tr>
                <td colspan="6" class="text-center text-muted py-4">
                    Kunne ikke indlæse fakturaer
                </td>
            </tr>
        `;
    }
}

function displayInvoices(invoices) {
    const tbody = document.getElementById('invoicesTableBody');
    const count = document.getElementById('invoiceCount');
    
    count.textContent = invoices.length;
    
    if (invoices.length === 0) {
        tbody.innerHTML = `
            <tr>
                <td colspan="6" class="text-center text-muted py-4">
                    Ingen fakturaer fundet for denne leverandør
                </td>
            </tr>
        `;
        return;
    }
    
    tbody.innerHTML = invoices.map(invoice => {
        const statusClass = getInvoiceStatusClass(invoice.status);
        const statusText = getInvoiceStatusText(invoice.status);
        
        return `
            <tr>
                <td><strong>${escapeHtml(invoice.invoice_number)}</strong></td>
                <td>${formatDateShort(invoice.invoice_date)}</td>
                <td>${formatDateShort(invoice.due_date)}</td>
                <td><strong>${formatCurrency(invoice.total_amount, invoice.currency)}</strong></td>
                <td><span class="badge ${statusClass}">${statusText}</span></td>
                <td class="text-end">
                    <a href="/billing/supplier-invoices?invoice=${invoice.id}" class="btn btn-sm btn-outline-primary">
                        <i class="bi bi-eye"></i>
                    </a>
                </td>
            </tr>
        `;
    }).join('');
}

function getInvoiceStatusClass(status) {
    const classes = {
        'unpaid': 'bg-warning text-dark',
        'paid': 'bg-success',
        'overdue': 'bg-danger',
        'cancelled': 'bg-secondary',
        'pending': 'bg-info'
    };
    return classes[status] || 'bg-secondary';
}

function getInvoiceStatusText(status) {
    const texts = {
        'unpaid': 'Ubetalt',
        'paid': 'Betalt',
        'overdue': 'Forfalden',
        'cancelled': 'Annulleret',
        'pending': 'Afventer'
    };
    return texts[status] || status;
}

function formatDateShort(dateString) {
    if (!dateString) return '-';
    const date = new Date(dateString);
    return date.toLocaleDateString('da-DK', { day: '2-digit', month: '2-digit', year: 'numeric' });
}

function formatCurrency(amount, currency = 'DKK') {
    if (!amount) return '-';
    return new Intl.NumberFormat('da-DK', {
        style: 'currency',
        currency: currency
    }).format(amount);
}

function getCategoryIcon(category) {
    const icons = {
        hardware: '🖥️',
        software: '💻',
        telecom: '📡',
        services: '🛠️',
        hosting: '☁️',
        general: '📦'
    };
    return icons[category] || '📦';
}

function getPriorityClass(priority) {
    if (priority >= 80) return 'bg-danger text-white';
    if (priority >= 60) return 'bg-warning';
    if (priority >= 40) return 'bg-info';
    return 'bg-secondary text-white';
}

function getInitials(name) {
    return name.split(' ').map(word => word[0]).join('').substring(0, 2).toUpperCase();
}

function editVendor() {
    // Get current vendor data and populate form
    fetch(`/api/v1/vendors/${vendorId}`)
        .then(response => response.json())
        .then(vendor => {
            document.getElementById('editName').value = vendor.name || '';
            document.getElementById('editCvr').value = vendor.cvr_number || '';
            document.getElementById('editCategory').value = vendor.category || 'Andet';
            document.getElementById('editDomain').value = vendor.domain || '';
            document.getElementById('editEmail').value = vendor.email || '';
            document.getElementById('editPhone').value = vendor.phone || '';
            document.getElementById('editAddress').value = vendor.address || '';
            document.getElementById('editCity').value = vendor.city || '';
            document.getElementById('editEconomicNumber').value = vendor.economic_supplier_number || '';
            document.getElementById('editNotes').value = vendor.notes || '';
            document.getElementById('editIsActive').checked = vendor.is_active;
            
            new bootstrap.Modal(document.getElementById('editVendorModal')).show();
        })
        .catch(error => {
            console.error('Error loading vendor for edit:', error);
            alert('Kunne ikke hente leverandør data');
        });
}

async function saveVendor() {
    try {
        const data = {
            name: document.getElementById('editName').value.trim(),
            cvr_number: document.getElementById('editCvr').value.trim() || null,
            category: document.getElementById('editCategory').value,
            domain: document.getElementById('editDomain').value.trim() || null,
            email: document.getElementById('editEmail').value.trim() || null,
            phone: document.getElementById('editPhone').value.trim() || null,
            address: document.getElementById('editAddress').value.trim() || null,
            city: document.getElementById('editCity').value.trim() || null,
            economic_supplier_number: document.getElementById('editEconomicNumber').value.trim() || null,
            notes: document.getElementById('editNotes').value.trim() || null,
            is_active: document.getElementById('editIsActive').checked
        };
        
        if (!data.name) {
            alert('Navn er påkrævet');
            return;
        }
        
        const response = await fetch(`/api/v1/vendors/${vendorId}`, {
            method: 'PUT',
            headers: { 'Content-Type': 'application/json' },
            body: JSON.stringify(data)
        });
        
        if (!response.ok) {
            const error = await response.json();
            throw new Error(error.detail || 'Kunne ikke gemme ændringer');
        }
        
        // Close modal and reload vendor
        bootstrap.Modal.getInstance(document.getElementById('editVendorModal')).hide();
        await loadVendor();
        alert('✅ Leverandør opdateret!');
        
    } catch (error) {
        console.error('Error saving vendor:', error);
        alert('Fejl: ' + error.message);
    }
}

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

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

// Tab navigation
document.querySelectorAll('.vertical-nav .nav-link').forEach(link => {
    link.addEventListener('click', (e) => {
        e.preventDefault();
        const tab = link.dataset.tab;
        
        // Update nav
        document.querySelectorAll('.vertical-nav .nav-link').forEach(l => l.classList.remove('active'));
        link.classList.add('active');
        
        // Update content
        document.querySelectorAll('.tab-pane').forEach(pane => {
            pane.classList.remove('show', 'active');
        });
        document.getElementById(tab).classList.add('show', 'active');
    });
});

// Load vendor on page ready
document.addEventListener('DOMContentLoaded', loadVendor);
</script>
{% endblock %}