<?php

require_once dirname(__DIR__, 2) . '/vendor/autoload.php';
require_once __DIR__ . '/class/db-functions.php';
require_once __DIR__ . '/class/binding-functions.php';
include dirname(__DIR__) . '/../extra/auth.php';

header('Content-Type: application/json');
ini_set('display_errors', '0');
error_reporting(E_ALL);

if (!Auth::check()) {
    http_response_code(401);
    echo json_encode(['success' => false, 'error' => 'Unauthorized']);
    exit;
}

if ($_SERVER['REQUEST_METHOD'] !== 'POST') {
    http_response_code(405);
    echo json_encode(['success' => false, 'error' => 'Method not allowed']);
    exit;
}

$kind        = ($_POST['kind'] ?? 'custom') === 'fixed' ? 'fixed' : 'custom';
$mappingId   = intval($_POST['mapping_id'] ?? 0);
$sourceValue = (string) ($_POST['source_value'] ?? '');

$datadbIds = [];
if (isset($_POST['datadb_ids'])) {
    $decoded = json_decode($_POST['datadb_ids'], true);
    if (is_array($decoded)) {
        $datadbIds = $decoded;
    }
}

if ($mappingId <= 0 || trim($sourceValue) === '') {
    http_response_code(422);
    echo json_encode(['success' => false, 'error' => 'Missing required parameters']);
    exit;
}

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

    if ($kind === 'fixed') {
        $stmt = $pdo->prepare("SELECT fixed_field_key FROM template_fixed_mapping WHERE id = ?");
        $stmt->execute([$mappingId]);
        $fixedKey = (string) ($stmt->fetchColumn() ?: '');

        if ($fixedKey === '') {
            http_response_code(422);
            echo json_encode(['success' => false, 'error' => 'Invalid fixed field']);
            exit;
        }

        $cleared = !empty($datadbIds)
            ? binding_apply_to_datadb($pdo, $fixedKey, null, $datadbIds)
            : 0;
    } else {
        $cleared = !empty($datadbIds)
            ? binding_apply_to_details($pdo, $mappingId, '', $datadbIds)
            : 0;
    }

    binding_delete($pdo, $mappingId, $sourceValue, $kind);

    echo json_encode(['success' => true, 'cleared_rows' => $cleared]);
} catch (Exception $e) {
    http_response_code(500);
    echo json_encode(['success' => false, 'error' => $e->getMessage()]);
}