/**
 * =========================================================================
 * Mon Cinéma - Module d'Administration (admin.js)
 * =========================================================================
 */

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

// ── 1. GARDE DE SESSION ──
(function guardSession() {
    if (window.location.pathname.includes('dashboard.html') && !localStorage.getItem('token')) {
        window.location.href = 'login.html';
    }
})();

// ══════════════════════════════════════════════════════════════════
//  CHARGEMENT & RENDU (DASHBOARD)
// ══════════════════════════════════════════════════════════════════
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');
    const countLabel = document.getElementById('admin-count-label');
    if (!tbody) return;

    tbody.innerHTML = '';
    const filtered = allItems.filter(item => item.type === currentAdminTab);

    if (countLabel) countLabel.textContent = `${filtered.length} élément(s) dans cette catégorie`;

    if (filtered.length === 0) {
        tbody.innerHTML = `<tr><td colspan="7" style="text-align:center; padding:3rem;">Aucun film trouvé.</td></tr>`;
        return;
    }

    filtered.forEach(f => {
        const tr = document.createElement('tr');
        const imgHTML = f.poster ? `<img src="${f.poster}" class="thumb" alt="${f.title}">` : `<div class="thumb-ph"></div>`;
        const dynamicCell = currentAdminTab === 'critique' 
            ? `<span class="tbl-stars">${'★'.repeat(f.rating)}</span>` 
            : `<span class="badge-format">${f.format || 'Physique'}</span>`;

        tr.innerHTML = `
            <td><input type="checkbox" class="film-checkbox" value="${f.id}"></td>
            <td>${imgHTML}</td>
            <td><strong>${f.title}</strong></td>
            <td>${f.year || ''}</td>
            <td>${f.director || ''}</td>
            <td>${dynamicCell}</td>
            <td>
                <button onclick="openEditModal('${f.id}')">Éditer</button>
                <button onclick="deleteSingleFilm('${f.id}')">Supprimer</button>
            </td>`;
        tbody.appendChild(tr);
    });
}

// ══════════════════════════════════════════════════════════════════
//  IMPORT / EXPORT CSV
// ══════════════════════════════════════════════════════════════════
function exportToCSV() {
    if (!allItems.length) return alert("Aucune donnée.");
    const headers = ['ID', 'Titre', 'Annee', 'Realisateur', 'Note', 'Critique', 'URL_Affiche'];
    const csvRows = [headers.join(';')];
    allItems.forEach(f => {
        csvRows.push([f.id, `"${f.title}"`, f.year, `"${f.director}"`, f.rating, `"${f.review}"`, `"${f.poster}"`].join(';'));
    });
    const blob = new Blob(["\uFEFF" + csvRows.join("\n")], { type: 'text/csv;charset=utf-8;' });
    const link = document.createElement("a");
    link.href = URL.createObjectURL(blob);
    link.download = "export_cinema.csv";
    link.click();
}

async function handleCsvUpload(input) {
    if (!input.files[0]) return;
    const formData = new FormData();
    formData.append('csv_file', input.files[0]);
    try {
        const res = await fetch(`${API_URL}?action=import_csv`, {
            method: 'POST',
            headers: { 'Authorization': localStorage.getItem('token') },
            body: formData
        });
        const data = await res.json();
        if (data.success) {
            alert(`Succès : ${data.imported} films ajoutés.`);
            loadDashboardData();
        }
    } catch (e) { console.error(e); }
}

// ══════════════════════════════════════════════════════════════════
//  GESTION ACTIONS UNITAIRES
// ══════════════════════════════════════════════════════════════════
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();
}

function switchAdminTab(tabName) {
    currentAdminTab = tabName;
    renderAdminTable();
}

// ── INITIALISATION ──
document.addEventListener('DOMContentLoaded', () => {
    if (document.getElementById('admin-table-body')) {
        loadDashboardData();
    }
});