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

include('include/headscript.php');

// Parametri dalla richiesta AJAX
$template_id = intval($_GET['template_id'] ?? 0);
$status = $_GET['status'] ?? 'i';
$offset = intval($_GET['offset'] ?? 0);
$limit = intval($_GET['limit'] ?? 20);

if (!$template_id || !in_array($status, ['i', 'P', 'l'])) {
    error_log("Errore in load_more_rows.php: Parametri non validi - template_id: $template_id, status: $status");
    echo json_encode(['success' => false, 'message' => 'Parametri non validi']);
    exit;
}

// Connessione al database
$db = DBHandlerSelect::getInstance();
$pdo = $db->getConnection();

// Recupera i dati
try {
    $stmt = $pdo->prepare("
        SELECT d.*, CONCAT(u.first_name, ' ', u.last_name) AS user_name
        FROM datadb d
        LEFT JOIN auth_users u ON d.user_id = u.id
        WHERE d.templateid = ? AND d.status = ?
        LIMIT ? OFFSET ?
    ");
    $stmt->execute([$template_id, $status, $limit, $offset]);
    $importedData = $stmt->fetchAll(PDO::FETCH_ASSOC);

    // Recupera i dettagli manuali
    $insertedIds = array_column($importedData, 'iddatadb');
    $manualDetails = [];
    if (!empty($insertedIds)) {
        $placeholders = implode(',', array_fill(0, count($insertedIds), '?'));
        $stmt = $pdo->prepare("
            SELECT d.id AS detail_id, d.id AS datadb_id, d.mapping_id, d.field_value, m.field_label, m.data_type, m.is_required, m.manual_default
            FROM import_data_details d
            JOIN template_mapping m ON d.mapping_id = m.id
            WHERE d.id IN ($placeholders)
        ");
        $stmt->execute($insertedIds);
        $manualDetails = $stmt->fetchAll(PDO::FETCH_ASSOC);
    }

    // Prepara i dati per il JSON
    $rows = [];
    foreach ($importedData as $row) {
        $rowData = [
            'iddatadb' => $row['iddatadb'] ?? '',
            'importreferencecode' => $row['importreferencecode'] ?? '',
            'filename_import' => $row['filename_import'] ?? '',
            'status' => $row['status'] ?? '',
            'importdate' => $row['importdate'] ?? '',
            'details' => array_filter($manualDetails, fn($d) => $d['datadb_id'] == $row['iddatadb'])
        ];
        $rows[] = $rowData;
    }

    error_log("load_more_rows.php: Caricate " . count($rows) . " righe per template_id=$template_id, status=$status, offset=$offset");
    echo json_encode(['success' => true, 'rows' => $rows]);
} catch (Exception $e) {
    error_log("Errore in load_more_rows.php: " . $e->getMessage());
    echo json_encode(['success' => false, 'message' => 'Errore nel caricamento: ' . $e->getMessage()]);
}
exit;