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

require_once(__DIR__ . '/include/headscript.php');

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

$input = json_decode(file_get_contents('php://input'), true);
$templateId = (int)($input['template_id'] ?? 0);

if ($templateId <= 0) {
    echo json_encode(['success' => false, 'message' => 'Invalid template_id']);
    exit;
}

// If already exists, do nothing
$stmt = $pdo->prepare("SELECT COUNT(*) FROM template_fixed_mapping WHERE template_id = ?");
$stmt->execute([$templateId]);
if ((int)$stmt->fetchColumn() > 0) {
    echo json_encode(['success' => true, 'created' => 0, 'message' => 'Fixed fields already exist']);
    exit;
}

/**
 * FIXED FIELDS STANDARD (no UI selection)
 * is_manual always 1
 * is_visible_import default 1
 */
$fixedFields = [
    // fixed_field_key, data_type
    ['ClienteResponsabile', 'INT'],
    ['ClienteFornitore', 'INT'],
    ['ClienteAnalisi', 'INT'],
    ['MoltiplicatorePrezzo', 'INT'],
    ['AnagraficaCertestObject', 'INT'],
    ['AnagraficaCertestService', 'INT'],
    ['ConsegnaRichiesta', 'DATE'],
];


try {
    $pdo->beginTransaction();

    $ins = $pdo->prepare("
    INSERT INTO template_fixed_mapping
    (template_id, fixed_field_key, is_manual, data_type, is_required, default_value, is_visible_import)
    VALUES
    (:template_id, :fixed_field_key, 1, :data_type, 1, NULL, 1)
");


    foreach ($fixedFields as $f) {
        $ins->execute([
            ':template_id'     => $templateId,
            ':fixed_field_key' => $f[0],
            ':data_type'       => $f[1],
        ]);
    }


    $pdo->commit();

    // Return rows (for client render)
    $stmt = $pdo->prepare("
    SELECT id, template_id, fixed_field_key, is_manual, data_type, is_required, default_value, is_visible_import
    FROM template_fixed_mapping
    WHERE template_id = ?
    ORDER BY id ASC
");

    $stmt->execute([$templateId]);
    $rows = $stmt->fetchAll(PDO::FETCH_ASSOC);

    echo json_encode(['success' => true, 'created' => count($rows), 'rows' => $rows]);
} catch (Exception $e) {
    if ($pdo->inTransaction()) $pdo->rollBack();
    echo json_encode(['success' => false, 'message' => $e->getMessage()]);
}