/**
 * Mon Cinéma - Module d'Administration (admin.js)
 * Version synchronisée avec api.php
 */

const API_URL = '../api.php';
let allItems = [];
let currentAdminTab = 'critique';

// ── INITIALISATION ──
document.addEventListener('DOMContentLoaded', loadDashboardData);

async function loadDashboardData() {
    try {
        const res = await fetch(`${API_URL}?action=get_films`);
        allItems = await res.json();
        
        const secRes = await fetch(`${API_URL}?action=check_security_status`);
        const secData = await secRes.json();
        const banner = document.getElementById('security-banner');
        if (banner) banner.style.display = secData.is_blank ? 'flex' : 'none';

        renderAdminTable();
    } catch (err) { console.error('Erreur chargement :', err); }
}

function renderAdminTable() {
    const tbody = document.getElementById('admin-table-body');
    if (!tbody) return;
    tbody.innerHTML = '';
    const filtered = allItems.filter(item => item.type === currentAdminTab);
    document.getElementById('admin-count-label').textContent = `${filtered.length} élément(s)`;

    filtered.forEach(f => {
        const tr = document.createElement('tr');
        tr.innerHTML = `
            <td><input type="checkbox" class="film-checkbox" value="${f.id}"></td>
            <td>${f.poster ? `<img src="${f.poster}" class="thumb" width="40">` : '-'}</td>
            <td><strong>${f.title}</strong></td>
            <td>${f.year || ''}</td>
            <td>${f.director || ''}</td>
            <td>${currentAdminTab === 'critique' ? (f.rating ? '★'.repeat(f.rating) : '☆') : (f.format || '-')}</td>
            <td>
                <button onclick="openEditModal('${f.id}')">Éditer</button>
                <button onclick="deleteSingleFilm('${f.id}')">Supprimer</button>
            </td>`;
        tbody.appendChild(tr);
    });
}

// ── ACTIONS CRUD ──
async function saveFilmForm(e) {
    e.preventDefault();
    const payload = {
        type: currentAdminTab,
        id: document.getElementById('f-id').value,
        title: document.getElementById('f-title').value,
        year: document.getElementById('f-year').value,
        director: document.getElementById('f-director').value,
        poster: document.getElementById('f-poster').value,
        // Champs conditionnels
        rating: document.getElementById('f-rating').value,
        review: document.getElementById('f-review').value,
        streaming: document.getElementById('f-streaming').value,
        format: document.getElementById('f-format').value,
        length: document.getElementById('f-length').value,
        publisher: document.getElementById('f-publisher').value,
        ean_isbn13: document.getElementById('f-ean').value,
        number_of_discs: document.getElementById('f-discs').value,
        aspect_ratio: document.getElementById('f-aspect').value,
        description: document.getElementById('f-description').value
    };

    await fetch(`${API_URL}?action=save_film`, {
        method: 'POST',
        headers: { 'Authorization': localStorage.getItem('token'), 'Content-Type': 'application/json' },
        body: JSON.stringify(payload)
    });
    closeAdminModal();
    loadDashboardData();
}

async function deleteSingleFilm(id) {
    if (!confirm('Supprimer cette œuvre ?')) return;
    await fetch(`${API_URL}?action=delete_film&id=${id}&type=${currentAdminTab}`, {
        method: 'DELETE',
        headers: { 'Authorization': localStorage.getItem('token') }
    });
    loadDashboardData();
}

// ── MODALES & UI ──
function switchAdminTab(tabName) {
    currentAdminTab = tabName;
    document.querySelectorAll('.tab-btn').forEach(b => b.classList.remove('active'));
    document.getElementById(`btn-tab-${tabName}`).classList.add('active');
    
    // Basculer l'affichage des formulaires
    document.getElementById('form-critique-fields').style.display = tabName === 'critique' ? 'block' : 'none';
    document.getElementById('form-videotheque-fields').style.display = tabName === 'videotheque' ? 'block' : 'none';
    
    renderAdminTable();
}

function openAddModal() {
    document.getElementById('film-form').reset();
    document.getElementById('f-id').value = '';
    document.getElementById('admin-modal').classList.add('open');
}

function openEditModal(id) {
    const item = allItems.find(x => String(x.id) === String(id));
    if (!item) return;
    // Remplissage formulaire...
    document.getElementById('f-id').value = item.id;
    document.getElementById('f-title').value = item.title;
    document.getElementById('admin-modal').classList.add('open');
}

function closeAdminModal() { document.getElementById('admin-modal').classList.remove('open'); }
function openConfigModal() { document.getElementById('config-modal').classList.add('open'); }
function closeConfigModal() { document.getElementById('config-modal').classList.remove('open'); }
function openPasswordModal() { document.getElementById('password-modal').classList.add('open'); }
function closePasswordModal() { document.getElementById('password-modal').classList.remove('open'); }

function logout() { 
    localStorage.removeItem('token'); 
    window.location.href = 'login.html'; 
}

// ── MOT DE PASSE ──
async function saveNewPassword() {
    const newPwd = document.getElementById('new-password-input').value;
    const confirmPwd = document.getElementById('new-password-confirm').value;
    if (newPwd !== confirmPwd) return alert("Les mots de passe ne correspondent pas.");
    
    const res = await fetch(`${API_URL}?action=update_password`, {
        method: 'POST',
        headers: { 'Authorization': localStorage.getItem('token'), 'Content-Type': 'application/json' },
        body: JSON.stringify({ new_password: newPwd })
    });
    if (res.ok) { alert("Mot de passe mis à jour."); closePasswordModal(); }
}

// ── IMPORT CSV ──
async function handleCsvUpload(input) {
    if (!input.files[0]) return;
    const formData = new FormData();
    formData.append('csv_file', input.files[0]);
    await fetch(`${API_URL}?action=import_csv`, {
        method: 'POST',
        headers: { 'Authorization': localStorage.getItem('token') },
        body: formData
    });
    loadDashboardData();
}

// ── GESTION SUPPRESSION DE MASSE ──

// Fonction appelée par le checkbox "Tout cocher"
function toggleSelectAll(source) {
    const checkboxes = document.querySelectorAll('.film-checkbox');
    checkboxes.forEach(checkbox => checkbox.checked = source.checked);
    updateBulkBar();
}

// Fonction pour mettre à jour l'affichage de la barre d'actions
function updateBulkBar() {
    const checkboxes = document.querySelectorAll('.film-checkbox:checked');
    const bulkBar = document.getElementById('bulk-actions-bar');
    const bulkCount = document.getElementById('bulk-count');
    
    if (checkboxes.length > 0) {
        bulkBar.style.display = 'flex';
        bulkCount.textContent = checkboxes.length;
    } else {
        bulkBar.style.display = 'none';
    }
}

// Écouteur d'événement pour détecter les clics sur les checkboxes individuelles
document.addEventListener('change', (e) => {
    if (e.target.classList.contains('film-checkbox')) {
        updateBulkBar();
    }
});

// Fonction appelée par le bouton "Supprimer la sélection"
async function executeBulkDelete() {
    const selected = Array.from(document.querySelectorAll('.film-checkbox:checked'))
                          .map(cb => cb.value);

    if (selected.length === 0) return;
    if (!confirm(`Supprimer ces ${selected.length} éléments ?`)) return;

    try {
        const res = await fetch(`${API_URL}?action=bulk_delete`, {
            method: 'POST',
            headers: { 
                'Authorization': localStorage.getItem('token'),
                'Content-Type': 'application/json' 
            },
            body: JSON.stringify({ ids: selected, type: currentAdminTab })
        });

        if (res.ok) {
            // Réinitialiser la barre après suppression
            document.getElementById('bulk-actions-bar').style.display = 'none';
            document.getElementById('select-all-checkbox').checked = false;
            loadDashboardData();
        } else {
            alert("Erreur lors de la suppression.");
        }
    } catch (err) {
        console.error('Erreur bulk delete :', err);
    }
}