<?php
declare(strict_types=1);
header('Content-Type: text/plain; charset=utf-8');

$envFile = dirname(__DIR__) . '/.env';
$env = [];
if (is_file($envFile)) {
    foreach (file($envFile, FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES) as $line) {
        $line = trim($line);
        if ($line === '' || $line[0] === '#') continue;
        $pos = strpos($line, '=');
        if ($pos === false) continue;
        $env[trim(substr($line, 0, $pos))] = trim(trim(substr($line, $pos + 1)), "\"'");
    }
}
try {
    $pdo = new PDO(
        sprintf('mysql:host=%s;port=%s;dbname=%s;charset=utf8mb4',
            $env['DB_HOST'] ?? '127.0.0.1', $env['DB_PORT'] ?? '3306', $env['DB_DATABASE'] ?? 'orderpro'),
        $env['DB_USERNAME'] ?? 'root', $env['DB_PASSWORD'] ?? '',
        [PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION]);
    $s = $pdo->prepare('SELECT setting_key, setting_value FROM app_settings WHERE setting_key LIKE ?');
    $s->execute(['gs1_%']);
    $cfg = [];
    foreach ($s->fetchAll(PDO::FETCH_ASSOC) as $r) $cfg[$r['setting_key']] = $r['setting_value'];
} catch (Throwable $e) { die('DB: ' . $e->getMessage()); }

$login = $cfg['gs1_api_login'] ?? '';
$password = $cfg['gs1_api_password'] ?? '';
if ($login === '' || $password === '') die("Brak credentials\n");

function gs1v(string $method, string $url, ?string $body, string $login, string $pw, array $extraHeaders = []): array {
    $curl = curl_init($url);
    $h = ['Accept: application/json'];
    if ($body !== null) $h[] = 'Content-Type: application/json';
    $h = array_merge($h, $extraHeaders);
    curl_setopt_array($curl, [
        CURLOPT_RETURNTRANSFER => true, CURLOPT_HTTPHEADER => $h,
        CURLOPT_USERPWD => $login . ':' . $pw, CURLOPT_HTTPAUTH => CURLAUTH_BASIC,
        CURLOPT_TIMEOUT => 30, CURLOPT_SSL_VERIFYPEER => true, CURLOPT_SSL_VERIFYHOST => 2,
        CURLOPT_CUSTOMREQUEST => $method,
        CURLOPT_VERBOSE => true,
    ]);
    // Capture verbose output
    $verbose = fopen('php://temp', 'w+');
    curl_setopt($curl, CURLOPT_STDERR, $verbose);
    if ($body !== null) curl_setopt($curl, CURLOPT_POSTFIELDS, $body);
    $resp = curl_exec($curl);
    $code = (int) curl_getinfo($curl, CURLINFO_RESPONSE_CODE);
    curl_close($curl);
    rewind($verbose);
    $verboseLog = stream_get_contents($verbose);
    fclose($verbose);
    return [$code, is_string($resp) ? $resp : '', $verboseLog];
}

$base = 'https://mojegs1.pl/api/v2';
$jf = JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES;

echo "=== GS1 Diagnostic v4 ===\n\n";

// Step 1: GET existing product
echo "--- Step 1: GET existing product ---\n";
[$c, $b, $v] = gs1v('GET', $base . '/products?page[offset]=1&page[limit]=1', null, $login, $password);
$d = json_decode($b, true);
$existing = $d['data'][0] ?? null;
if (!$existing) die("Nie mozna pobrac produktu\n");
$exGtin = $existing['id'];
$exAttrs = $existing['attributes'];
echo "GTIN: {$exGtin}\n";
echo "Status: {$exAttrs['status']}\n\n";

// Step 2: Verbose PUT - minimal + subBrandName + name
echo "--- Step 2: Verbose PUT (minimal + name + subBrandName) ---\n";
$attrs2 = [
    'brandName' => $exAttrs['brandName'],
    'subBrandName' => $exAttrs['brandName'],
    'commonName' => $exAttrs['commonName'],
    'name' => $exAttrs['name'] ?? ($exAttrs['brandName'] . ' ' . $exAttrs['commonName']),
    'gpcCode' => $exAttrs['gpcCode'],
    'netContent' => $exAttrs['netContent'],
    'netContentUnit' => $exAttrs['netContentUnit'],
    'status' => $exAttrs['status'],
    'targetMarket' => $exAttrs['targetMarket'],
    'descriptionLanguage' => $exAttrs['descriptionLanguage'],
];
$payload2 = json_encode(['data' => ['type' => 'products', 'id' => $exGtin, 'attributes' => $attrs2]], $jf);
echo "REQ: {$payload2}\n";
[$c, $b, $v] = gs1v('PUT', $base . '/products/' . $exGtin, $payload2, $login, $password);
echo "HTTP {$c}: {$b}\n";
echo "VERBOSE:\n{$v}\n\n";

// Step 3: Try PATCH instead of PUT
echo "--- Step 3: PATCH instead of PUT ---\n";
[$c, $b, $v] = gs1v('PATCH', $base . '/products/' . $exGtin, $payload2, $login, $password);
echo "HTTP {$c}: {$b}\n\n";

// Step 4: Try gpcCode as string
echo "--- Step 4: gpcCode as string ---\n";
$attrs4 = $attrs2;
$attrs4['gpcCode'] = (string) $attrs4['gpcCode'];
$payload4 = json_encode(['data' => ['type' => 'products', 'id' => $exGtin, 'attributes' => $attrs4]], $jf);
echo "REQ: {$payload4}\n";
[$c, $b, $v] = gs1v('PUT', $base . '/products/' . $exGtin, $payload4, $login, $password);
echo "HTTP {$c}: {$b}\n\n";

// Step 5: Try application/vnd.api+json for both Content-Type and Accept
echo "--- Step 5: vnd.api+json content type ---\n";
$curl5 = curl_init($base . '/products/' . $exGtin);
curl_setopt_array($curl5, [
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_HTTPHEADER => ['Content-Type: application/vnd.api+json', 'Accept: application/vnd.api+json'],
    CURLOPT_USERPWD => $login . ':' . $password, CURLOPT_HTTPAUTH => CURLAUTH_BASIC,
    CURLOPT_TIMEOUT => 30, CURLOPT_SSL_VERIFYPEER => true, CURLOPT_SSL_VERIFYHOST => 2,
    CURLOPT_CUSTOMREQUEST => 'PUT',
    CURLOPT_POSTFIELDS => $payload2,
]);
$resp5 = curl_exec($curl5);
$code5 = (int) curl_getinfo($curl5, CURLINFO_RESPONSE_CODE);
curl_close($curl5);
echo "HTTP {$code5}: {$resp5}\n\n";

// Step 6: Try with netContent as float explicitly
echo "--- Step 6: netContent as float 1.0 ---\n";
$attrs6 = $attrs2;
$attrs6['netContent'] = 1.0;
$payload6 = json_encode(['data' => ['type' => 'products', 'id' => $exGtin, 'attributes' => $attrs6]], $jf);
// Force 1.0 in JSON (json_encode may output 1 for 1.0)
$payload6 = str_replace('"netContent":1,', '"netContent":1.0,', $payload6);
echo "REQ: {$payload6}\n";
[$c, $b, $v] = gs1v('PUT', $base . '/products/' . $exGtin, $payload6, $login, $password);
echo "HTTP {$c}: {$b}\n\n";

// Step 7: Try completely empty attributes
echo "--- Step 7: Empty attributes ---\n";
$payload7 = json_encode(['data' => ['type' => 'products', 'id' => $exGtin, 'attributes' => new \stdClass()]], $jf);
echo "REQ: {$payload7}\n";
[$c, $b, $v] = gs1v('PUT', $base . '/products/' . $exGtin, $payload7, $login, $password);
echo "HTTP {$c}: {$b}\n\n";

// Step 8: Binary search - ONE field at a time
echo "--- Step 8: Single field tests ---\n";
$singleFields = [
    'brandName' => $exAttrs['brandName'],
    'commonName' => $exAttrs['commonName'],
    'gpcCode' => $exAttrs['gpcCode'],
    'netContent' => $exAttrs['netContent'],
    'netContentUnit' => $exAttrs['netContentUnit'],
    'status' => $exAttrs['status'],
    'targetMarket' => $exAttrs['targetMarket'],
    'descriptionLanguage' => $exAttrs['descriptionLanguage'],
];
foreach ($singleFields as $key => $val) {
    $p = json_encode(['data' => ['type' => 'products', 'id' => $exGtin, 'attributes' => [$key => $val]]], $jf);
    [$c, $b, $v] = gs1v('PUT', $base . '/products/' . $exGtin, $p, $login, $password);
    echo "  {$key} => HTTP {$c}\n";
}

echo "\n=== DONE ===\n";