<?php

// "Nessuna corrispondenza": azzera il valore importato (custom o fixed) e rimuove il binding. Ritorna JSON.

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';
$templateId = intval($_POST['template_id'] ?? 0);
$jsonValue  = (string) ($_POST['json_value'] ?? '');

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

if ($jsonValue === '') {
    http_response_code(422);
    echo json_encode(['success' => false, 'error' => 'Missing json_value']);
    exit;
}

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

    if ($kind === 'fixed') {
        $fixedKey = trim($_POST['fixed_field_key'] ?? '');
        $column = binding_fixed_column($fixedKey);
        if ($fixedKey === '' || !binding_fixed_is_list($fixedKey) || !$column || $templateId <= 0) {
            http_response_code(422);
            echo json_encode(['success' => false, 'error' => 'Invalid fixed field']);
            exit;
        }
        $cleared = !empty($datadbIds) ? binding_apply_to_datadb($pdo, $column, null, $datadbIds) : 0;
        binding_delete_target($pdo, binding_target_fixed($templateId, $fixedKey), $jsonValue);
    } else {
        $mappingId = intval($_POST['mapping_id'] ?? 0);
        if ($mappingId <= 0) {
            http_response_code(422);
            echo json_encode(['success' => false, 'error' => 'Missing mapping_id']);
            exit;
        }
        $cleared = !empty($datadbIds) ? binding_apply_to_details($pdo, $mappingId, '', $datadbIds) : 0;
        binding_delete_target($pdo, binding_target_custom($mappingId), $jsonValue);
    }

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