<?php
require_once 'koneksi.php';
date_default_timezone_set('Asia/Jakarta');
$pdo->exec("SET time_zone = '+07:00'");

header('Content-Type: application/json');

if ($_SERVER['REQUEST_METHOD'] === 'POST') {
    $activity = isset($_POST['activity']) ? trim($_POST['activity']) : '';
    $fotoData = isset($_POST['fotoData']) ? $_POST['fotoData'] : '';
    $token = isset($_POST['token']) ? $_POST['token'] : '';


    if (empty($activity) || empty($fotoData)) {
        echo json_encode(['status' => 'error', 'message' => 'Lengkapi data aktivitas dan foto.']);
        exit;
    }

    if (empty($token)) {
        echo json_encode(['status' => 'error', 'message' => 'Token tidak ditemukan.']);
        exit;
    }

    $usedTokensFile = __DIR__ . '/used_report_tokens.json';
    $usedTokens = [];
    if (file_exists($usedTokensFile)) {
        $usedTokens = json_decode(file_get_contents($usedTokensFile), true) ?: [];
    }

    if (isset($usedTokens[$token])) {
        echo json_encode(['status' => 'error', 'message' => 'Token sudah digunakan.']);
        exit;
    }

    try {
        // Prepare image
        $fotoData = str_replace('data:image/jpeg;base64,', '', $fotoData);
        $fotoData = str_replace(' ', '+', $fotoData);
        $imgData = base64_decode($fotoData);

        if (!is_dir('uploads/history')) {
            mkdir('uploads/history', 0755, true);
        }

        $fileName = time() . '_' . uniqid() . '.jpg';
        $filePath = 'uploads/history/' . $fileName;

        if (file_put_contents($filePath, $imgData)) {
            // 1. Insert ke schedule
            $stmt = $pdo->prepare("INSERT INTO schedule (date, kegiatan) VALUES (NOW(), ?)");
            $stmt->execute([$activity]);
            $schedule_id = $pdo->lastInsertId();

            // 2. Tentukan occupant_id (dengan validasi ketat)
            $occupant_id = null;

            // Cek dari parameter occ_id yang dikirim
            if (isset($_POST['occ_id']) && is_numeric($_POST['occ_id']) && (int) $_POST['occ_id'] > 0) {
                $checkOcc = $pdo->prepare("SELECT id_occupant FROM occupant WHERE id_occupant = ?");
                $checkOcc->execute([(int) $_POST['occ_id']]);
                $foundOcc = $checkOcc->fetch(PDO::FETCH_ASSOC);
                if ($foundOcc) {
                    $occupant_id = (int) $foundOcc['id_occupant'];
                }
            }

            // Fallback jika occ_id tidak valid atau tidak ditemukan
            if ($occupant_id === null) {
                $occStmt = $pdo->query("SELECT id_occupant FROM occupant ORDER BY id_occupant ASC LIMIT 1");
                $occ = $occStmt->fetch(PDO::FETCH_ASSOC);
                if ($occ) {
                    $occupant_id = (int) $occ['id_occupant'];
                } else {
                    echo json_encode(['status' => 'error', 'message' => 'Tidak ada occupant terdaftar di sistem.']);
                    exit;
                }
            }

            // 3. Insert ke history (simpan juga nama occupant agar nama tetap ada meskipun occupant dihapus)
            $getOccName = $pdo->prepare("SELECT name FROM occupant WHERE id_occupant = ?");
            $getOccName->execute([$occupant_id]);
            $occName = $getOccName->fetchColumn();

            $stmtHist = $pdo->prepare("INSERT INTO history (occupant_id, schedule_id, foto, occupant_name, is_read, is_starred, is_deleted) VALUES (?, ?, ?, ?, 0, 0, 0)");
            $stmtHist->execute([$occupant_id, $schedule_id, $filePath, $occName]);

            // 4. Update Door Status to Locked & Send Notification
            $statusFile = __DIR__ . '/door_status.txt';
            file_put_contents($statusFile, 'locked');

            require_once 'PushHelper.php';
            include_once 'notification_helper.php';
            send_notification($pdo, 'mdi-door-closed-lock', 'Pintu Terkunci', 'Pintu Ruang FTM berhasil dikunci setelah Submit Report.', 'Pintu terkunci secara otomatis dari sistem laporan.', false);

            // 5. Signal ESP32 to proceed to SCR_MAIN
            $stateFile = __DIR__ . '/esp32_state.json';
            if (file_exists($stateFile)) {
                $stateData = json_decode(file_get_contents($stateFile), true);
                if (is_array($stateData)) {
                    $stateData['report_submitted'] = true;
                    file_put_contents($stateFile, json_encode($stateData));
                }
            }

            // 6. Mark token as used
            $usedTokens[$token] = time();
            file_put_contents($usedTokensFile, json_encode($usedTokens, JSON_PRETTY_PRINT));

            echo json_encode(['status' => 'success', 'message' => 'Data berhasil disimpan']);
        } else {
            echo json_encode(['status' => 'error', 'message' => 'Gagal menyimpan foto']);
        }

    } catch (PDOException $e) {
        echo json_encode(['status' => 'error', 'message' => 'Database error: ' . $e->getMessage()]);
    }
} else {
    echo json_encode(['status' => 'error', 'message' => 'Invalid request']);
}
?>