<?php
ini_set('display_errors', 1);
ini_set('display_startup_errors', 1);
error_reporting(E_ALL);
ini_set('log_errors', 1);
ini_set('error_log', __DIR__ . '/import_debug.log');
if (!file_exists(__DIR__ . '/import_debug.log')) {
    file_put_contents(__DIR__ . '/import_debug.log', "Inizio importazione alle " . date('Y-m-d H:i:s') . "\n", FILE_APPEND);
}

// Log iniziale
error_log("Inizio importazione alle " . date('Y-m-d H:i:s'));

include('include/headscript.php');

if ($_SERVER['REQUEST_METHOD'] !== 'POST' || !isset($_POST['template_id']) || !isset($_POST['selected_rows']) || !isset($_POST['filename'])) {
    header("Location: xlstemplates_grid.php?status=error&message=" . urlencode("Richiesta non valida"));
    exit;
}

$template_id = intval($_POST['template_id']);
$selected_rows = array_map('intval', $_POST['selected_rows']);
$columns = json_decode($_POST['columns'], true);
$rows = json_decode($_POST['rows'], true);
$excelrows = json_decode($_POST['excelrows'], true);
$newFilename = htmlspecialchars($_POST['filename']);

$_SESSION['template_id'] = $template_id;
$_SESSION['selected_rows'] = $selected_rows;
$_SESSION['columns'] = $columns;
$_SESSION['rows'] = $rows;
$_SESSION['excelrows'] = $excelrows;
$_SESSION['filename'] = $newFilename;

error_log("Received Data - Template ID: $template_id, Selected Rows: " . json_encode($selected_rows));
error_log("Columns: " . json_encode($columns));
error_log("Rows: " . json_encode($rows));
error_log("Excelrows: " . json_encode($excelrows));

$user_id = $iduserlogin ?? 1;

$db = DBHandlerSelect::getInstance();
$pdo = $db->getConnection();

// Genera un UUID univoco per importreferencecode
$importReferenceCode = date('YmdHis') . '-' . uniqid();

// Recupera tutti i mapping dal template
$stmt = $pdo->prepare("SELECT id, excel_column, data_type, is_required, manual_default, is_manual, field_label, field_id, main_field FROM template_mapping WHERE template_id = ?");
$stmt->execute([$template_id]);
$allMappings = $stmt->fetchAll(PDO::FETCH_ASSOC);

if (empty($allMappings)) {
    header("Location: import_xls.php?id=$template_id&status=error&message=" . urlencode("Nessun mapping trovato per il template"));
    exit;
}

// Trova il campo main_field
$mainFieldMapping = null;
foreach ($allMappings as $mapping) {
    if ($mapping['main_field'] == 1) {
        $mainFieldMapping = $mapping;
        break;
    }
}

// Inserisci le righe selezionate in datadb
$insertedIds = [];
foreach ($selected_rows as $rowIndex) {
    $row = $rows[$rowIndex] ?? null;
    $excelrow = $excelrows[$rowIndex] ?? null;

    if ($row === null || $excelrow === null) {
        error_log("Errore: riga o excelrow mancante per rowIndex $rowIndex");
        continue;
    }

    $values = [
        $template_id,
        $importReferenceCode,
        $newFilename,
        'i',
        $user_id,
        null,
        date('Y-m-d'),
        $excelrow // Aggiunto excelrow per la colonna excelrow
    ];
    $sql = "INSERT INTO datadb (templateid, importreferencecode, filename_import, status, user_id, limscode, importdate, excelrow) VALUES (?, ?, ?, ?, ?, ?, ?, ?)";
    $stmt = $pdo->prepare($sql);
    $stmt->execute($values);

    $iddatadb = $pdo->lastInsertId();
    $insertedIds[] = $iddatadb;

    // Inserisci tutti i campi in import_data_details
    foreach ($allMappings as $mapping) {
        $fieldValue = null;
        if (!$mapping['is_manual']) {
            $excelColumn = trim($mapping['excel_column']);
            $excelColumnIndex = array_search($excelColumn, array_map('trim', $columns));
            if ($excelColumnIndex !== false && isset($row[$excelColumnIndex]) && $row[$excelColumnIndex] !== '') {
                $fieldValue = $row[$excelColumnIndex];
                error_log("Found Excel column '$excelColumn' at index $excelColumnIndex, value: " . var_export($fieldValue, true));
            } else {
                $fieldValue = $mapping['manual_default'] ?? '';
                error_log("Excel column '$excelColumn' not found or empty, using default: " . var_export($fieldValue, true));
            }
            switch ($mapping['data_type']) {
                case 'INT':
                    $fieldValue = is_numeric($fieldValue) ? (int)$fieldValue : ($mapping['manual_default'] ?? 0);
                    break;
                case 'DATE':
                    $fieldValue = !empty($fieldValue) ? date('Y-m-d', strtotime($fieldValue)) : ($mapping['manual_default'] === 'today' ? date('Y-m-d') : ($mapping['manual_default'] ?? ''));
                    break;
                case 'CHAR':
                    $fieldValue = !empty($fieldValue) ? substr((string)$fieldValue, 0, 1) : ($mapping['manual_default'] ?? '');
                    break;
                case 'Testo':
                case 'VARCHAR':
                default:
                    $fieldValue = !empty($fieldValue) ? htmlspecialchars((string)$fieldValue) : ($mapping['manual_default'] ?? '');
                    break;
            }
        } else {
            $fieldValue = $mapping['manual_default'] ?? '';
            if ($mapping['data_type'] === 'DATE' && $mapping['manual_default'] === 'today') {
                $fieldValue = date('Y-m-d');
            }
        }
        if ($mapping['is_required'] && (is_null($fieldValue) || $fieldValue === '')) {
            error_log("Required field missing for mapping ID: " . $mapping['id'] . ", field: " . $mapping['field_label']);
        }
        error_log("Inserting into import_data_details - Mapping ID: " . $mapping['id'] . ", Field Value: " . var_export($fieldValue, true) . ", Is Manual: " . $mapping['is_manual'] . ", Excel Column: " . ($mapping['excel_column'] ?? 'N/A') . ", Manual Default: " . ($mapping['manual_default'] ?? 'N/A'));
        $stmt = $pdo->prepare("INSERT INTO import_data_details (id, mapping_id, field_value) VALUES (?, ?, ?)");
        $stmt->execute([$iddatadb, $mapping['id'], $fieldValue]);
        error_log("Inserted into import_data_details for ID $iddatadb, Mapping ID: " . $mapping['id'] . ", Field Value: " . var_export($fieldValue, true));
    }
}

$_SESSION['inserted_ids'] = $insertedIds;

$params = [
    'template_id' => $template_id,
    'filename' => $newFilename,
];

?>
<form id="redirectForm" action="import_edit2.php" method="post">
    <input type="hidden" name="template_id" value="<?= htmlspecialchars($template_id) ?>">
    <input type="hidden" name="filename" value="<?= htmlspecialchars($newFilename) ?>">
    <?php foreach ($selected_rows as $row): ?>
        <input type="hidden" name="selected_rows[]" value="<?= htmlspecialchars($row) ?>">
    <?php endforeach; ?>
    <?php foreach ($insertedIds as $id): ?>
        <input type="hidden" name="inserted_ids[]" value="<?= htmlspecialchars($id) ?>">
    <?php endforeach; ?>
    <input type="hidden" name="columns" value='<?= json_encode($columns) ?>'>
    <input type="hidden" name="rows" value='<?= json_encode($rows) ?>'>
    <input type="hidden" name="excelrows" value='<?= json_encode($excelrows) ?>'>
</form>
<script>
    document.getElementById('redirectForm').submit();
</script>
<?php
exit;
?>