<?php
// Démarrer la session en tout premier pour gérer l'authentification
session_start();

// --- CONFIGURATION ---
define('ADMIN_PASSWORD', 'chemspro2025'); // IMPORTANT : Changez ce mot de passe !
define('CSV_FILE', 'partenaires_chemspro.csv');
define('UPLOADS_DIR', 'uploads/'); // Le dossier où sont stockés les logos
define('ADD_PARTNER_PAGE', 'add_partner.php'); // Nom du fichier du formulaire d'ajout

// --- PROXY D'IMAGE POUR CONTOURNER L'ERREUR 403 FORBIDDEN ---
if (isset($_GET['get_image'])) {
    $imageName = basename($_GET['get_image']);
    $imagePath = UPLOADS_DIR . $imageName;

    if (file_exists($imagePath)) {
        $finfo = finfo_open(FILEINFO_MIME_TYPE);
        $mimeType = finfo_file($finfo, $imagePath);
        finfo_close($finfo);
        header('Content-Type: ' . $mimeType);
        header('Content-Length: ' . filesize($imagePath));
        readfile($imagePath);
        exit;
    } else {
        http_response_code(404);
        exit;
    }
}

// --- FONCTIONS DE GESTION DES DONNÉES (CSV) ---
function getPartners() {
    $default_headers = ['id', 'name', 'logo', 'status', 'email', 'date', 'responsable', 'tel', 'activite', 'ville', 'siteweb', 'description', 'ice', 'autre_prec'];
    // Crée le fichier CSV avec les en-têtes s'il n'existe pas
    if (!file_exists(CSV_FILE) || filesize(CSV_FILE) == 0) {
        $handle = fopen(CSV_FILE, 'w');
        fputcsv($handle, $default_headers);
        fclose($handle);
    }

    $partners = [];
    if (($handle = fopen(CSV_FILE, "r")) !== FALSE) {
        $headers = fgetcsv($handle, 2000, ",");
        // Si le fichier est vide ou les en-têtes ne peuvent être lus, retourner un tableau vide.
        if ($headers === false || empty($headers)) {
             fclose($handle);
             return [];
        }
        $header_count = count($headers);

        while (($data = fgetcsv($handle, 2000, ",")) !== FALSE) {
            $data_count = count($data);
            
            // Ignorer les lignes complètement vides
            if ($data_count === 1 && empty($data[0])) {
                continue;
            }

            // Rendre le code robuste : si le nombre de colonnes ne correspond pas, on l'ajuste
            if ($data_count < $header_count) {
                // Ajouter des cellules vides pour correspondre aux en-têtes
                $data = array_pad($data, $header_count, '');
            } elseif ($data_count > $header_count) {
                // Tronquer les données en trop
                $data = array_slice($data, 0, $header_count);
            }
            
            // Combiner les en-têtes et les données pour créer un tableau associatif
            $partners[] = array_combine($headers, $data);
        }
        fclose($handle);
    }
    return $partners;
}

function savePartners($partners) {
    if (($handle = fopen(CSV_FILE, "w")) !== FALSE) {
        flock($handle, LOCK_EX);
        if (!empty($partners)) {
             $headers = ['id', 'name', 'logo', 'status', 'email', 'date', 'responsable', 'tel', 'activite', 'ville', 'siteweb', 'description', 'ice', 'autre_prec'];
            fputcsv($handle, $headers);
            foreach ($partners as $partner) {
                // S'assurer que chaque ligne a toutes les colonnes dans le bon ordre
                $ordered_partner = [];
                foreach($headers as $header) {
                    $ordered_partner[$header] = $partner[$header] ?? '';
                }
                fputcsv($handle, $ordered_partner);
            }
        }
        flock($handle, LOCK_UN);
        fclose($handle);
        return true;
    }
    return false;
}

// --- LOGIQUE DE L'APPLICATION (CONTRÔLEUR) ---

// Déconnexion
if (isset($_GET['action']) && $_GET['action'] === 'logout') {
    session_destroy();
    header("Location: " . htmlspecialchars($_SERVER['PHP_SELF']));
    exit;
}

// Connexion
if ($_SERVER['REQUEST_METHOD'] === 'POST' && isset($_POST['password'])) {
    if ($_POST['password'] === ADMIN_PASSWORD) {
        $_SESSION['loggedin'] = true;
        header("Location: " . htmlspecialchars($_SERVER['PHP_SELF']));
        exit;
    } else {
        $login_error = "Mot de passe incorrect.";
    }
}

// Si non connecté, afficher le formulaire de connexion
if (!isset($_SESSION['loggedin']) || $_SESSION['loggedin'] !== true) {
?>
<!DOCTYPE html>
<html lang="fr">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Connexion - Administration Chems’Pro</title>
    <script src="js/tailwindcss.js"></script>
</head>
<body class="bg-gray-100 flex items-center justify-center h-screen">
    <div class="w-full max-w-md bg-white rounded-lg shadow-md p-8">
        <div class="flex justify-center mb-6">
             <svg class="h-12 w-12 text-blue-600" viewBox="0 0 24 24" fill="currentColor"><path d="M12 2L2 7l10 5 10-5-10-5zM2 17l10 5 10-5-10-5-10 5z"/></svg>
        </div>
        <h2 class="text-2xl font-bold text-center text-gray-700 mb-6">Administration Chems’Pro</h2>
        <?php if (isset($login_error)): ?>
            <p class="bg-red-100 border border-red-400 text-red-700 px-4 py-3 rounded relative mb-4"><?php echo $login_error; ?></p>
        <?php endif; ?>
        <form method="post" action="<?= htmlspecialchars($_SERVER['PHP_SELF']) ?>">
            <div class="mb-4">
                <label for="password" class="block text-gray-700 text-sm font-bold mb-2">Mot de passe :</label>
                <input type="password" name="password" id="password" class="shadow appearance-none border rounded w-full py-2 px-3 text-gray-700 leading-tight focus:outline-none focus:shadow-outline" required>
            </div>
            <div class="flex items-center justify-center">
                <button type="submit" class="bg-blue-600 hover:bg-blue-700 text-white font-bold py-2 px-4 rounded focus:outline-none focus:shadow-outline w-full">
                    Connexion
                </button>
            </div>
        </form>
    </div>
</body>
</html>
<?php
    exit;
}

// Traitement des actions (Validation, Refus, Suppression)
if (isset($_GET['action']) && isset($_GET['id'])) {
    $partners = getPartners();
    $partnerId = $_GET['id'];
    $action = $_GET['action'];
    $updated = false;

    foreach ($partners as $key => $partner) {
        if ($partner['id'] === $partnerId) {
            switch ($action) {
                case 'validate': $partners[$key]['status'] = 'Validé'; $updated = true; break;
                case 'refuse': $partners[$key]['status'] = 'Refusé'; $updated = true; break;
                case 'set_pending': $partners[$key]['status'] = 'En attente'; $updated = true; break;
                case 'delete': unset($partners[$key]); $updated = true; break;
            }
            break; 
        }
    }

    if ($updated) {
        savePartners(array_values($partners));
        header("Location: " . htmlspecialchars($_SERVER['PHP_SELF']) . "?status=success");
        exit;
    }
}
?>
<!DOCTYPE html>
<html lang="fr">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Administration des Partenaires Chems’Pro</title>
    <script src="js/tailwindcss.js"></script>
    <script src="js/html2canvas.min.js"></script>
    <script src="js/jspdf.umd.min.js"></script>
    <style>
        .modal { display: none; }
        .modal.is-open { display: flex; }
    </style>
</head>
<body class="bg-gray-50 font-sans text-gray-800">

    <!-- Header -->
    <header class="bg-white shadow-md sticky top-0 z-40">
        <div class="container mx-auto px-6 py-4 flex justify-between items-center">
            <div class="flex items-center">
                <svg class="h-10 w-10 text-blue-600 mr-3" viewBox="0 0 24 24" fill="currentColor"><path d="M12 2L2 7l10 5 10-5-10-5zM2 17l10 5 10-5-10-5-10 5z"/></svg>
                <h1 class="text-2xl font-bold text-gray-700">Administration des Partenaires Chems’Pro</h1>
            </div>
            <div>
                <a href="#" class="text-blue-600 hover:text-blue-800 transition-colors mr-6">Retour à la page publique</a>
                <a href="?action=logout" class="text-red-600 hover:text-red-800 transition-colors">Déconnexion</a>
            </div>
        </div>
    </header>

    <!-- Main Content -->
    <main class="container mx-auto px-6 py-8">
        <?php if (isset($_GET['status'])): ?>
            <div id="notification" class="fixed top-5 right-5 z-50 p-4 rounded-lg shadow-lg text-white bg-green-500">
                <?php if ($_GET['status'] === 'success'): ?>
                    Opération effectuée avec succès !
                <?php elseif ($_GET['status'] === 'add_success'): ?>
                    Nouveau partenaire ajouté avec succès !
                <?php endif; ?>
            </div>
        <?php endif; ?>

        <div class="bg-white p-6 rounded-lg shadow-lg">
            <div class="flex justify-between items-center mb-4">
                <h2 class="text-xl font-semibold">Tableau de gestion des partenaires</h2>
                <a href="<?= ADD_PARTNER_PAGE ?>" class="bg-blue-600 hover:bg-blue-700 text-white font-bold py-2 px-4 rounded">
                    + Ajouter un partenaire
                </a>
            </div>
            <div class="overflow-x-auto">
                <table class="w-full min-w-[800px]">
                    <thead class="bg-gray-100">
                        <tr>
                            <th class="p-3 text-left text-sm font-semibold text-gray-600 uppercase">ID</th>
                            <th class="p-3 text-left text-sm font-semibold text-gray-600 uppercase">Logo</th>
                            <th class="p-3 text-left text-sm font-semibold text-gray-600 uppercase">Nom de l'entreprise</th>
                            <th class="p-3 text-left text-sm font-semibold text-gray-600 uppercase">Statut</th>
                            <th class="p-3 text-center text-sm font-semibold text-gray-600 uppercase">Actions</th>
                        </tr>
                    </thead>
                    <tbody class="divide-y divide-gray-200">
                        <?php
                        $partners = getPartners();
                        if (empty($partners)):
                        ?>
                            <tr><td colspan="5" class="p-4 text-center text-gray-500">Aucun partenaire trouvé.</td></tr>
                        <?php else:
                            foreach ($partners as $partner):
                                $status_classes = [
                                    'Validé' => 'bg-green-100 text-green-800 border-green-300',
                                    'En attente' => 'bg-yellow-100 text-yellow-800 border-yellow-300',
                                    'Refusé' => 'bg-red-100 text-red-800 border-red-300',
                                ];
                                $status_class = $status_classes[$partner['status'] ?? ''] ?? 'bg-gray-100 text-gray-800';
                                $partner_json = htmlspecialchars(json_encode($partner), ENT_QUOTES, 'UTF-8');
                        ?>
                            <tr class="hover:bg-gray-50">
                                <td class="p-3 text-sm text-gray-500 font-mono"><?= htmlspecialchars($partner['id'] ?? '') ?></td>
                                <td class="p-3"><img src="<?= htmlspecialchars($_SERVER['PHP_SELF']) ?>?get_image=<?= urlencode(htmlspecialchars($partner['logo'] ?? '')) ?>" alt="Logo" class="h-12 w-12 rounded-full object-cover border-2 border-gray-200" onerror="this.onerror=null;this.src='https://placehold.co/100x100/ccc/ffffff?text=N/A';"></td>
                                <td class="p-3 text-sm text-gray-900 font-bold"><?= htmlspecialchars($partner['name'] ?? '') ?></td>
                                <td class="p-3"><span class="px-3 py-1 text-sm font-semibold rounded-full border <?= $status_class ?>"><?= htmlspecialchars($partner['status'] ?? '') ?></span></td>
                                <td class="p-3 w-[280px] space-y-1">
                                    <button class="details-btn flex items-center justify-center w-full px-3 py-2 text-sm font-medium text-white rounded-md transition-colors bg-gray-500 hover:opacity-90" data-partner='<?= $partner_json ?>'>Voir les détails</button>
                                    <?php if (($partner['status'] ?? '') === 'En attente'): ?>
                                        <a href="?action=validate&id=<?= $partner['id'] ?>" class="flex items-center justify-center w-full px-3 py-2 text-sm font-medium text-white rounded-md transition-colors bg-green-600 hover:opacity-90">Valider</a>
                                        <a href="?action=refuse&id=<?= $partner['id'] ?>" class="flex items-center justify-center w-full px-3 py-2 text-sm font-medium text-white rounded-md transition-colors bg-red-600 hover:opacity-90">Refuser</a>
                                    <?php elseif (($partner['status'] ?? '') === 'Validé'): ?>
                                        <button class="attestation-btn flex items-center justify-center w-full px-3 py-2 text-sm font-medium text-white rounded-md transition-colors bg-blue-600 hover:opacity-90" data-type="portrait" data-partner='<?= $partner_json ?>'>Attestation Reconnaissance</button>
                                        <button class="attestation-btn flex items-center justify-center w-full px-3 py-2 text-sm font-medium text-white rounded-md transition-colors bg-sky-600 hover:opacity-90" data-type="paysage" data-partner='<?= $partner_json ?>'>Attestation Partenariat</button>
                                        <a href="?action=set_pending&id=<?= $partner['id'] ?>" class="flex items-center justify-center w-full px-3 py-2 text-sm font-medium text-white rounded-md transition-colors bg-yellow-600 hover:opacity-90">Mettre en attente</a>
                                    <?php elseif (($partner['status'] ?? '') === 'Refusé'): ?>
                                        <a href="?action=delete&id=<?= $partner['id'] ?>" class="flex items-center justify-center w-full px-3 py-2 text-sm font-medium text-white rounded-md transition-colors bg-gray-700 hover:opacity-90" onclick="return confirm('Êtes-vous sûr de vouloir supprimer définitivement cette fiche ?');">Supprimer la fiche</a>
                                    <?php endif; ?>
                                </td>
                            </tr>
                        <?php endforeach; endif; ?>
                    </tbody>
                </table>
            </div>
        </div>
    </main>

    <!-- Modal pour les détails du partenaire -->
    <div id="detailsModal" class="modal fixed inset-0 z-50 items-center justify-center bg-black bg-opacity-60 p-4">
        <div class="bg-white rounded-lg shadow-2xl w-full max-w-2xl max-h-[90vh] overflow-y-auto" onclick="event.stopPropagation()">
            <div class="p-6">
                <div class="flex justify-between items-start">
                    <h3 class="text-2xl font-bold mb-4 text-gray-800">Détails du Partenaire</h3>
                    <button onclick="document.getElementById('detailsModal').classList.remove('is-open')" class="text-gray-400 hover:text-gray-600">&times;</button>
                </div>
                <div id="detailsContent" class="mt-4 grid grid-cols-1 md:grid-cols-2 gap-x-6 gap-y-4 text-sm">
                    <!-- Contenu généré par JavaScript -->
                </div>
            </div>
        </div>
    </div>

    <!-- Modal pour l'aperçu de l'attestation -->
    <div id="attestationModal" class="modal fixed inset-0 z-50 items-center justify-center bg-black bg-opacity-60 p-4">
        <div class="bg-white rounded-lg shadow-2xl w-full max-w-4xl max-h-[90vh] overflow-y-auto" onclick="event.stopPropagation()">
            <div class="p-6">
                 <h3 class="text-2xl font-bold mb-4">Aperçu de l'attestation</h3>
                <div class="flex justify-center mb-6 space-x-4">
                    <button id="downloadPdfBtn" class="flex items-center bg-blue-600 text-white px-4 py-2 rounded-lg hover:bg-blue-700">Télécharger en PDF</button>
                    <button onclick="document.getElementById('attestationModal').classList.remove('is-open')" class="bg-gray-300 px-4 py-2 rounded-lg hover:bg-gray-400">Fermer</button>
                </div>
                <div class="bg-gray-200 p-4 rounded-lg overflow-auto">
                    <div id="attestationContent" class="bg-white shadow-lg mx-auto p-[20mm] flex flex-col"></div>
                </div>
            </div>
        </div>
    </div>
    
    <script>
    document.addEventListener('DOMContentLoaded', function() {
        const { jsPDF } = window.jspdf;
        const detailsModal = document.getElementById('detailsModal');
        const attestationModal = document.getElementById('attestationModal');
        const notification = document.getElementById('notification');

        if (notification) {
            setTimeout(() => { notification.style.display = 'none'; }, 3000);
        }

        document.body.addEventListener('click', function(e) {
            // Gérer le bouton "Détails"
            if (e.target.closest('.details-btn')) {
                const partnerData = JSON.parse(e.target.closest('.details-btn').dataset.partner);
                openDetailsModal(partnerData);
            }
            // Gérer le bouton "Attestation"
            if (e.target.closest('.attestation-btn')) {
                const partnerData = JSON.parse(e.target.closest('.attestation-btn').dataset.partner);
                const type = e.target.closest('.attestation-btn').dataset.type;
                openAttestationModal(partnerData, type);
            }
        });
        
        function createDetailItem(label, value) {
            return `<div><strong class="text-gray-600 block">${label}</strong><span class="text-gray-800">${value || 'N/A'}</span></div>`;
        }

        function openDetailsModal(partner) {
            const contentDiv = document.getElementById('detailsContent');
            const logoUrl = `<?= htmlspecialchars($_SERVER['PHP_SELF']) ?>?get_image=${encodeURIComponent(partner.logo)}`;
            
            contentDiv.innerHTML = `
                ${createDetailItem('Nom de l\'organisation', partner.name)}
                ${createDetailItem('Nom du responsable', partner.responsable)}
                ${createDetailItem('Email', `<a href="mailto:${partner.email}" class="text-blue-600">${partner.email}</a>`)}
                ${createDetailItem('Téléphone', `<a href="tel:${partner.tel}" class="text-blue-600">${partner.tel}</a>`)}
                ${createDetailItem('Ville / Région', partner.ville)}
                ${createDetailItem('Site Web', partner.siteweb ? `<a href="${partner.siteweb}" target="_blank" class="text-blue-600">${partner.siteweb}</a>` : 'N/A')}
                ${createDetailItem('Domaine d\'activité', partner.activite)}
                ${createDetailItem('Précision (si autre)', partner.autre_prec)}
                ${createDetailItem('Numéro ICE', partner.ice)}
                <div class="md:col-span-2">${createDetailItem('Présentation', partner.description)}</div>
            `;
            detailsModal.classList.add('is-open');
        }

        function openAttestationModal(partner, type) {
            const contentDiv = document.getElementById('attestationContent');
            const orientationClass = type === 'portrait' ? 'w-[210mm] h-[297mm]' : 'w-[297mm] h-[210mm]';
            const title = type === 'portrait' ? 'Attestation de Reconnaissance' : 'Attestation de Partenariat';
            const logoUrl = `<?= htmlspecialchars($_SERVER['PHP_SELF']) ?>?get_image=${encodeURIComponent(partner.logo)}`;

            contentDiv.className = `bg-white shadow-lg mx-auto p-[20mm] flex flex-col ${orientationClass}`;
            contentDiv.innerHTML = `
                <header class="flex justify-between items-start border-b-4 border-blue-800 pb-4">
                  <div><h1 class="text-4xl font-bold text-blue-800">Chems’Pro</h1><p class="text-gray-600">Le Label d'Excellence</p></div>
                  <svg class="h-20 w-20 text-blue-700" viewBox="0 0 24 24" fill="currentColor"><path d="M12 2L2 7l10 5 10-5-10-5zM2 17l10 5 10-5-10-5-10 5z"/></svg>
                </header>
                <main class="flex-grow flex flex-col justify-center items-center text-center">
                    <h2 class="text-3xl font-light text-gray-700 mb-6 uppercase tracking-widest">${title}</h2>
                    <p class="text-lg my-4">Décernée à</p>
                    <img src="${logoUrl}" alt="Logo ${partner.name}" class="max-h-32 my-6" crossorigin="anonymous" />
                    <h3 class="text-5xl font-bold text-gray-900 my-4">${partner.name}</h3>
                    <p class="text-lg mt-6">Pour son engagement et sa contribution au sein du programme Chems’Pro.</p>
                </main>
                <footer class="text-center text-xs text-gray-500 pt-4 border-t-2 border-gray-300 mt-auto">
                  <p>Émis le: ${new Date().toLocaleDateString('fr-FR')}</p>
                  <p>ID Partenaire: ${partner.id}</p><p>Chems’Pro / MISEN – Tous droits réservés</p>
                </footer>`;
            
            document.getElementById('downloadPdfBtn').onclick = () => generatePDF(partner.name, type);
            attestationModal.classList.add('is-open');
        }

        function generatePDF(partnerName, type) {
            const element = document.getElementById('attestationContent');
            window.html2canvas(element, { scale: 2, useCORS: true }).then(canvas => {
                const imgData = canvas.toDataURL('image/png');
                const pdf = new jsPDF({ orientation: type, unit: 'mm', format: 'a4' });
                pdf.addImage(imgData, 'PNG', 0, 0, pdf.internal.pageSize.getWidth(), pdf.internal.pageSize.getHeight());
                pdf.save(`attestation_${partnerName.replace(/\s/g, '_')}_${type}.pdf`);
            });
        }
        
        [detailsModal, attestationModal].forEach(modal => {
            modal.addEventListener('click', function(e) {
                if (e.target === this) { this.classList.remove('is-open'); }
            });
        });
    });
    </script>
</body>
</html>