<?php

namespace App\Http\Controllers\Admin;

use App\Http\Controllers\Controller;
use App\Http\Controllers\Site\ReportController;
use App\Models\Customer;
use App\Models\Order;
use App\Models\Product;
use App\Models\Zarin;
use App\Services\ConfigService;
use App\Services\ZarinSyncService;
use Carbon\Carbon;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Cache;
use Illuminate\Support\Facades\Http;
use Illuminate\Support\Facades\Log;
use Symfony\Component\HttpKernel\Exception\UnprocessableEntityHttpException;

class ZarinController extends Controller
{
    protected function sync(): ZarinSyncService
    {
        return app(ZarinSyncService::class);
    }

    private function lastPriceData(): array
    {
        $response = app(ReportController::class)->lastPrice(request());

        if (is_array($response)) {
            return $response;
        }

        if (is_object($response) && method_exists($response, 'getData')) {
            return (array) $response->getData(true);
        }

        return (array) $response;
    }

    private function zarinConfigError()
    {
        return response()->json([
            'message' => 'تنظیمات زرین کامل نیست. zarin_api یا zarin_token تنظیم نشده است.'
        ], 422);
    }

    private function zarinAccountingUrl()
    {
        $api = trim((string) $this->Config('zarin_api'));

        if (empty($api)) {
            return null;
        }

        return rtrim($api, '/') . '/ZarrinService/accounting';
    }

    private function zarinToken()
    {
        $token = trim((string) $this->Config('zarin_token'));

        return empty($token) ? null : $token;
    }

    private function zarinRequest(array $params, int $timeout = 15)
    {
        $url = $this->zarinAccountingUrl();
        $token = $this->zarinToken();

        if (!$url || !$token) {
            return null;
        }

        $params['token'] = $token;

        return Http::withoutVerifying()
            ->timeout($timeout)
            ->get($url, $params);
    }

    /**
     * decode پاسخ HTTP زرین — خطاهای متنی (مثل ERROR: radif is empty) را هم برمی‌گرداند.
     *
     * @return array{0: ?array, 1: ?string} [json, error]
     */
    private function zarinDecodeResponse($http): array
    {
        if (!$http) {
            return [null, 'تنظیمات zarin_api یا zarin_token خالی است.'];
        }

        $body = (string) $http->body();
        $json = $http->json();
        if (!is_array($json) && $body !== '') {
            $decoded = json_decode($body, true);
            if (is_array($decoded)) {
                $json = $decoded;
            }
        }

        if (!$http->successful()) {
            $detail = null;
            if (is_array($json)) {
                $detail = $json['detail'] ?? $json['msg'] ?? $json['message'] ?? $json['error'] ?? null;
            }
            if ($detail === null || $detail === '') {
                $detail = trim($body) !== '' ? mb_substr(trim($body), 0, 300) : null;
            }
            $error = 'HTTP ' . $http->status() . ($detail ? (': ' . $detail) : '');

            return [is_array($json) ? $json : null, $error];
        }

        if (!is_array($json)) {
            return [null, 'پاسخ زرین JSON نیست (طول ' . strlen($body) . ')'];
        }

        return [$json, null];
    }

    private function zarinDefaultNoeKar()
    {
        $value = (int) $this->Config('zarin_noe_kar');

        return $value > 0 ? $value : 16;
    }

    private function zarinDefaultGoroheKar()
    {
        $value = (int) $this->Config('zarin_gorohe_kar');

        return $value > 0 ? $value : 52;
    }

    /** نام گروه حساب مشتری در زرین — فقط از تنظیم zarin_name_g */
    private function zarinCustomerGroupName(): string
    {
        return trim((string) $this->Config('zarin_name_g'));
    }

    /**
     * پیشوند عددی uid — وقتی چند پنل یک توکن زرین دارند باید متفاوت باشد
     * تا uid تکراری و پاسخ Cache قاطی نشود (فقط ارقام، طبق داکیومنت زرین).
     */
    private function zarinUid(string $kindPrefix, $localId): string
    {
        $panel = preg_replace('/\D+/', '', (string) $this->Config('zarin_uid_prefix')) ?: '';
        $local = preg_replace('/\D+/', '', (string) $localId) ?: '0';

        return $panel . $kindPrefix . $local;
    }

    private function isListArray(array $array)
    {
        if (function_exists('array_is_list')) {
            return array_is_list($array);
        }

        return array_keys($array) === range(0, count($array) - 1);
    }

    private function containsText($haystack, $needle)
    {
        $haystack = (string) $haystack;
        $needle = (string) $needle;

        if ($needle === '') {
            return false;
        }

        return mb_strpos($haystack, $needle) !== false;
    }

    private function normalizeZarinName($value)
    {
        $value = trim((string) $value);

        $value = str_replace(['ي', 'ك', '‌'], ['ی', 'ک', ' '], $value);
        $value = preg_replace('/\s+/u', ' ', $value);

        return mb_strtolower($value);
    }

    private function zarinRowsFromBody($body)
    {
        if (!is_array($body)) {
            return [];
        }

        $data = $body['data'] ?? $body['Data'] ?? [];

        if (!is_array($data)) {
            return [];
        }

        return $this->isListArray($data) ? $data : [$data];
    }

    private function extractResponseRow(?array $body): array
    {
        if (!is_array($body)) {
            return [];
        }

        if (isset($body['data']) && is_array($body['data'])) {
            $data = $this->isListArray($body['data'])
                ? ($body['data'][0] ?? [])
                : $body['data'];

            if (is_array($data)) {
                return array_merge($body, $data);
            }
        }

        return $body;
    }

    /**
     * پیدا کردن کار/کالای محصول در زرین.
     * اول infokarbarcodi (اگر روی آن سرور فعال باشد)؛ وگرنه infosakhte (لیست کامل).
     */
    private function findZarinKarForProduct(Product $product, $goroheKar = null)
    {
        $goroheKar = $goroheKar ?: $this->zarinDefaultGoroheKar();
        $productName = $this->normalizeZarinName($product->title);

        $fromBarcode = $this->findZarinKarInInfokarbarcodi($productName, $goroheKar);
        if ($fromBarcode) {
            return $fromBarcode;
        }

        return $this->findZarinKarInInfosakhte($productName, $goroheKar);
    }

    private function matchZarinKarRow(string $productName, array $row): ?array
    {
        $name = $row['nameKar']
            ?? $row['nam_kar_sakhte']
            ?? $row['nam']
            ?? $row['name']
            ?? $row['namKar']
            ?? $row['title']
            ?? '';

        $rowName = $this->normalizeZarinName($name);
        $idKar = $this->extractUsableZarinKarId($row);

        if (!$idKar) {
            return null;
        }

        if (
            $rowName === $productName ||
            $this->containsText($rowName, $productName) ||
            $this->containsText($productName, $rowName)
        ) {
            return [
                'idKar' => $idKar,
                'row' => $row,
            ];
        }

        return null;
    }

    private function findZarinKarInInfokarbarcodi(string $productName, $goroheKar): ?array
    {
        for ($page = 1; $page <= 10; $page++) {
            $response = $this->zarinRequest([
                'kind' => 'infokarbarcodi',
                'id' => $goroheKar,
                'vazneat' => 0,
                'pageNum' => $page,
                'detailCount' => 250,
            ]);

            // روی بعضی سرورهای زرین جدول barcodetala نیست → 400؛ برو سراغ infosakhte
            if (!$response || !$response->successful()) {
                return null;
            }

            $rows = $this->zarinRowsFromBody($response->json());
            if (empty($rows)) {
                break;
            }

            foreach ($rows as $row) {
                if (!is_array($row)) {
                    continue;
                }
                $hit = $this->matchZarinKarRow($productName, $row);
                if ($hit) {
                    return $hit;
                }
            }

            if (count($rows) < 250) {
                break;
            }
        }

        return null;
    }

    /** لیست کارهای ساخته — فیلد nam_kar_sakhte / id (تست‌شده روی API زرین) */
    private function findZarinKarInInfosakhte(string $productName, $goroheKar): ?array
    {
        $response = $this->zarinRequest([
            'kind' => 'infosakhte',
        ], 30);

        if (!$response || !$response->successful()) {
            return null;
        }

        $rows = $this->zarinRowsFromBody($response->json());
        if (empty($rows)) {
            return null;
        }

        $noeKar = (string) $this->zarinDefaultNoeKar();
        $gorohe = (string) $goroheKar;
        $preferred = null;
        $fallback = null;

        foreach ($rows as $row) {
            if (!is_array($row)) {
                continue;
            }
            $hit = $this->matchZarinKarRow($productName, $row);
            if (!$hit) {
                continue;
            }

            $idGp = (string) ($row['idGp'] ?? $row['idgp'] ?? '');
            if ($idGp !== '' && ($idGp === $gorohe || $idGp === $noeKar)) {
                $preferred = $hit;
                break;
            }
            if ($fallback === null) {
                $fallback = $hit;
            }
        }

        return $preferred ?? $fallback;
    }

    private function getZarinKarById($idKar)
    {
        if (empty($idKar) || !is_numeric($idKar)) {
            return null;
        }

        $response = $this->zarinRequest([
            'kind' => 'infosakhte',
            'id' => (int) $idKar,
        ]);

        if (!$response || !$response->successful()) {
            return null;
        }

        $body = $response->json();
        $rows = $this->zarinRowsFromBody($body);

        foreach ($rows as $row) {
            if (!is_array($row)) {
                continue;
            }

            $rowId = $row['pkFelez']
                ?? $row['pkfelez']
                ?? $row['PKFelez']
                ?? $row['id']
                ?? $row['idKar']
                ?? $row['idkar']
                ?? $row['zarrinId']
                ?? $row['zarinId']
                ?? null;
            if ((string) $rowId === (string) $idKar) {
                return $row;
            }
        }

        return null;
    }

    private function extractUsableZarinKarId(array $row)
    {
        foreach ([
            'zarrinId',
            'zarinId',
            'idKar',
            'idkar',
            'IDKar',
            'id',
            'code',
            'Code',
        ] as $key) {
            if (isset($row[$key]) && is_numeric($row[$key])) {
                return (int) $row[$key];
            }
        }

        return null;
    }

    private function createZarinKarForProduct(Product $product)
    {
        $params = [
            'kind' => 'addFelezsakhteModel',
            'nameKar' => $product->title,
            'noeKar' => $this->zarinDefaultNoeKar(),
            'gorooheKar' => $this->zarinDefaultGoroheKar(),
        ];

        $response = $this->zarinRequest($params);

        if (!$response) {
            return [
                'ok' => false,
                'message' => 'تنظیمات زرین کامل نیست. zarin_api یا zarin_token تنظیم نشده است.',
                'status_code' => 422,
                'sent_params' => $params,
            ];
        }

        if (!$response->successful()) {
            return [
                'ok' => false,
                'message' => 'ساخت کد کار در زرین ناموفق بود.',
                'status_code' => 502,
                'status' => $response->status(),
                'body' => $response->body(),
                'json' => $response->json(),
                'sent_params' => $params,
            ];
        }

        $body = $response->json();

        $createdPkFelez = $body['data'][0]['pkFelez']
            ?? $body['data']['pkFelez']
            ?? $body['pkFelez']
            ?? null;

        $foundAfterCreate = $this->findZarinKarForProduct($product, $this->zarinDefaultGoroheKar());

        if ($foundAfterCreate && !empty($foundAfterCreate['idKar']) && is_numeric($foundAfterCreate['idKar'])) {
            $product->finance_p_name = (string) $foundAfterCreate['idKar'];
            $product->save();

            return [
                'ok' => true,
                'source' => 'created_and_found_by_name',
                'idKar' => (int) $foundAfterCreate['idKar'],
                'product' => $product->fresh(),
                'zarin_row' => $foundAfterCreate['row'],
                'zarin_response' => $body,
                'created_pkFelez' => $createdPkFelez,
                'sent_params_success' => $params,
            ];
        }

        return [
            'ok' => false,
            'message' => 'زرین کالا را ساخت، اما idKar قابل استفاده از infosakhte/infokarbarcodi پیدا نشد.',
            'status_code' => 422,
            'created_pkFelez' => $createdPkFelez,
            'zarin_response' => $body,
            'sent_params' => $params,
        ];
    }

    private function ensureZarinKarForProduct(Product $product, $forceCreate = false)
    {
        $currentIdKar = $product->finance_p_name;

        if (!$forceCreate && !empty($currentIdKar) && is_numeric($currentIdKar)) {
            $existingRow = $this->getZarinKarById($currentIdKar);

            if ($existingRow) {
                $usableIdKar = $this->extractUsableZarinKarId($existingRow) ?: (int) $currentIdKar;

                if ((string) $product->finance_p_name !== (string) $usableIdKar) {
                    $product->finance_p_name = (string) $usableIdKar;
                    $product->save();
                }

                return [
                    'ok' => true,
                    'source' => 'existing_verified',
                    'idKar' => (int) $usableIdKar,
                    'product' => $product->fresh(),
                    'zarin_row' => $existingRow,
                ];
            }
        }

        if (!$forceCreate) {
            $found = $this->findZarinKarForProduct($product, $this->zarinDefaultGoroheKar());

            if ($found && !empty($found['idKar']) && is_numeric($found['idKar'])) {
                $product->finance_p_name = (string) $found['idKar'];
                $product->save();

                return [
                    'ok' => true,
                    'source' => 'found_by_name',
                    'idKar' => (int) $found['idKar'],
                    'product' => $product->fresh(),
                    'zarin_row' => $found['row'],
                ];
            }
        }

        return $this->createZarinKarForProduct($product);
    }

    public function table(Request $request)
    {
        $query = Zarin::with('customer')->orderByDesc('id');
        \App\DB\Te\TableEngine::create($query, $request)
            ->initSearch(['desc', 'type'])
            ->select(['*'])
            ->export($query);

        return response()->json($query);
    }

    public function show($id)
    {
        $zarin = Zarin::with('customer')->findOrFail($id);

        return response()->json($zarin);
    }

    /**
     * لیست حساب‌های زرین — فقط listhesabha (Get100Account لیست نیست و ۴۰۰ می‌دهد).
     *
     * @return array{rows: array<int, array>, error: ?string, http_status: ?int}
     */
    private function fetchAllZarinCustomers(): array
    {
        if (!$this->zarinAccountingUrl() || !$this->zarinToken()) {
            return [
                'rows' => [],
                'error' => 'تنظیمات zarin_api یا zarin_token خالی است.',
                'http_status' => null,
            ];
        }

        try {
            // listhesabha کامل است (~۳۰۰ ردیف / چند ثانیه)؛ timeout بالاتر از درخواست‌های کوتاه
            $response = $this->zarinRequest([
                'kind' => 'listhesabha',
            ], 45);

            if (!$response) {
                return [
                    'rows' => [],
                    'error' => 'درخواست به زرین ساخته نشد (آدرس/توکن).',
                    'http_status' => null,
                ];
            }

            $status = $response->status();
            $body = $response->body();

            if (!$response->successful()) {
                $snippet = mb_substr(trim((string) $body), 0, 180);
                $msg = "listhesabha ناموفق (HTTP {$status})";
                if ($snippet !== '') {
                    $msg .= ': ' . $snippet;
                }

                return [
                    'rows' => [],
                    'error' => $msg,
                    'http_status' => $status,
                ];
            }

            $json = $response->json();
            if (!is_array($json)) {
                return [
                    'rows' => [],
                    'error' => 'پاسخ listhesabha JSON معتبر نیست. طول بدنه: ' . strlen((string) $body),
                    'http_status' => $status,
                ];
            }

            $rows = $this->zarinRowsFromBody($json);

            if (empty($rows)) {
                return [
                    'rows' => [],
                    'error' => 'listhesabha خالی بود یا کلید data پیدا نشد. کلیدها: '
                        . implode(',', array_keys($json)),
                    'http_status' => $status,
                ];
            }

            return [
                'rows' => $rows,
                'error' => null,
                'http_status' => $status,
            ];
        } catch (\Exception $e) {
            Log::warning('zarin listhesabha failed', ['message' => $e->getMessage()]);

            return [
                'rows' => [],
                'error' => 'خطا در ارتباط با زرین: ' . $e->getMessage(),
                'http_status' => null,
            ];
        }
    }

    /** نام حساب از پاسخ listhesabha (فیلد nam، نه name) */
    private function extractZarinName(array $item): string
    {
        $nam = trim((string) ($item['nam'] ?? $item['Nam'] ?? ''));
        if ($nam !== '') {
            // "تستی * هوم" → "تستی هوم"
            $nam = preg_replace('/\s*\*\s*/u', ' ', $nam) ?? $nam;

            return trim(preg_replace('/\s+/u', ' ', $nam) ?? $nam);
        }

        $name = trim((string) ($item['name'] ?? $item['Name'] ?? ''));
        $family = trim((string) ($item['family'] ?? $item['Family'] ?? ''));
        $full = trim($name . ' ' . $family);

        return $full !== '' ? $full : $name;
    }

    private function extractZarinGroup(array $item): string
    {
        return trim((string) (
            $item['gorooh']
            ?? $item['GoroupName']
            ?? $item['group']
            ?? $item['Group']
            ?? ''
        ));
    }

    public function customerSyncStatus(Request $request): \Illuminate\Http\JsonResponse
    {
        $panelTotal = Customer::whereNull('deleted_at')->count();
        $panelRegistered = Customer::whereNull('deleted_at')->whereNotNull('moshtari_code')->count();
        $panelOnly = $panelTotal - $panelRegistered;

        $panelOnlyQuery = Customer::whereNull('deleted_at')->whereNull('moshtari_code')
            ->select('id', 'name', 'mobile', 'created_at');

        if ($search = $request->input('search')) {
            $panelOnlyQuery->where(function ($q) use ($search) {
                $q->where('name', 'like', "%{$search}%")
                    ->orWhere('mobile', 'like', "%{$search}%");
            });
        }
        $panelOnlyList = $panelOnlyQuery->orderBy('id')->paginate(20);

        $zarinTotal = null;
        $zarinOnlyCount = null;
        $zarinFetchError = null;
        $zarinHttpStatus = null;
        $zarinOnlyResult = ['data' => [], 'total' => 0, 'current_page' => 1, 'last_page' => 1];
        $debugSample = [];

        $include = $request->boolean('include_zarin') || $request->boolean('include_tahesab');

        if ($include) {
            $fetched = $this->fetchAllZarinCustomers();
            $zarinCustomers = $fetched['rows'];
            $zarinFetchError = $fetched['error'];
            $zarinHttpStatus = $fetched['http_status'];
            $zarinTotal = count($zarinCustomers);

            $panelMobiles = Customer::whereNull('deleted_at')
                ->whereNotNull('mobile')
                ->pluck('mobile')
                ->mapWithKeys(fn ($m) => [ltrim((string) $m, '0') => true])
                ->toArray();

            $panelCodes = Customer::whereNull('deleted_at')
                ->whereNotNull('moshtari_code')
                ->pluck('moshtari_code')
                ->mapWithKeys(fn ($c) => [(string) $c => true])
                ->toArray();

            $zarinOnlyList = [];
            foreach ($zarinCustomers as $item) {
                if (!is_array($item)) {
                    continue;
                }
                if (count($debugSample) < 3) {
                    $debugSample[] = $item;
                }
                $code = $item['idHesab'] ?? $item['Code'] ?? $item['code'] ?? $item['id'] ?? null;
                if ($code !== null && isset($panelCodes[(string) $code])) {
                    continue;
                }
                $phone = $this->extractZarinPhone($item);
                $tel = ltrim($phone, '0');
                if ($tel && isset($panelMobiles[$tel])) {
                    continue;
                }
                $zarinOnlyList[] = [
                    'code' => $code,
                    'name' => $this->extractZarinName($item),
                    'tel' => $phone,
                    'gid' => $item['GID'] ?? null,
                    'group' => $this->extractZarinGroup($item),
                ];
            }
            $zarinOnlyCount = count($zarinOnlyList);
            $zarinOnlyResult = [
                'data' => array_values($zarinOnlyList),
                'total' => $zarinOnlyCount,
                'current_page' => 1,
                'last_page' => 1,
            ];
        }

        $payload = [
            'panel_total' => $panelTotal,
            'panel_registered' => $panelRegistered,
            'panel_only' => $panelOnly,
            'zarin_total' => $zarinTotal,
            'zarin_only_count' => $zarinOnlyCount,
            'zarin_fetch_error' => $zarinFetchError,
            'zarin_http_status' => $zarinHttpStatus,
            'panel_only_list' => $panelOnlyList,
            'zarin_only_list' => $zarinOnlyResult,
        ];

        if ($include && $request->boolean('raw')) {
            $payload['zarin_debug_sample'] = $debugSample;
        }

        return response()->json($payload);
    }

    private function extractZarinPhone(array $item): string
    {
        $candidates = ['mobile', 'Mobile', 'tell', 'Tell', 'tel', 'Tel', 'Phone', 'CellPhone', 'Cell', 'MobileNo', 'Telephone', 'Mobile1'];
        foreach ($candidates as $key) {
            if (isset($item[$key]) && trim((string) $item[$key]) !== '') {
                return trim((string) $item[$key]);
            }
        }
        foreach ($item as $k => $v) {
            if ($v === null || trim((string) $v) === '') {
                continue;
            }
            $lk = strtolower((string) $k);
            if (str_contains($lk, 'mobile') || str_contains($lk, 'tel')
                || str_contains($lk, 'phone') || str_contains($lk, 'cell')) {
                return trim((string) $v);
            }
        }

        return '';
    }

    public function syncPanelToZarin(): \Illuminate\Http\JsonResponse
    {
        $customers = Customer::whereNull('deleted_at')
            ->whereNull('moshtari_code')
            ->select('id', 'name', 'mobile')
            ->get();

        $success = 0;
        $failed = 0;
        $errors = [];

        foreach ($customers as $customer) {
            $result = $this->sync()->registerCustomer($customer);
            if ($result['ok'] ?? false) {
                $success++;
            } else {
                $failed++;
                $errors[] = ['name' => $customer->name, 'mobile' => $customer->mobile, 'error' => $result['message'] ?? ''];
            }
        }

        return response()->json([
            'ok' => true,
            'success' => $success,
            'failed' => $failed,
            'errors' => $errors,
        ]);
    }

    public function importFromZarin(Request $request): \Illuminate\Http\JsonResponse
    {
        $validated = $request->validate([
            'customers' => 'required|array',
            'customers.*.code' => 'required|integer',
            'customers.*.name' => 'nullable|string',
            'customers.*.tel' => 'nullable|string',
        ]);

        $success = 0;
        $failed = 0;
        $errors = [];

        foreach ($validated['customers'] as $item) {
            $mobile = Customer::normalizeMobile($item['tel'] ?? '') ?? '';
            $fullName = trim($item['name']);
            $code = (int) $item['code'];

            if ($fullName === '') {
                $fullName = 'مشتری زرین ' . $code;
            }

            // موبایل برای خیلی از حساب‌های زرین خالی است (مثل تستی هوم) — مانع import نیست
            $existing = Customer::whereNull('deleted_at')->where('moshtari_code', $code)->first();
            if ($existing) {
                $changed = false;
                if (($existing->name === null || $existing->name === '') && $fullName !== '') {
                    $existing->fname = $fullName;
                    $existing->lname = (string) ($existing->lname ?? '');
                    $existing->name = $fullName;
                    $changed = true;
                }
                if ($mobile !== '' && ($existing->mobile === null || $existing->mobile === '')) {
                    if (Customer::isMobileTaken($mobile, (int) $existing->id)) {
                        $failed++;
                        $errors[] = [
                            'name' => $item['name'],
                            'code' => $item['code'],
                            'error' => 'شماره موبایل تکراری است',
                        ];
                        continue;
                    }
                    $existing->mobile = $mobile;
                    if (empty($existing->password)) {
                        $existing->password = $mobile;
                    }
                    $changed = true;
                }
                if ($changed) {
                    $existing->save();
                }
                $success++;
                continue;
            }

            if ($mobile !== '') {
                $byMobile = Customer::findActiveByMobile($mobile);
                if ($byMobile) {
                    if (empty($byMobile->moshtari_code)) {
                        $byMobile->moshtari_code = $code;
                        if ($fullName !== '') {
                            $byMobile->fname = $fullName;
                            $byMobile->lname = '';
                            $byMobile->name = $fullName;
                        }
                        if (empty($byMobile->password)) {
                            $byMobile->password = $mobile;
                        }
                        $byMobile->save();
                        $success++;
                        continue;
                    }

                    $failed++;
                    $errors[] = [
                        'name' => $item['name'],
                        'code' => $item['code'],
                        'error' => 'شماره موبایل تکراری است',
                    ];
                    continue;
                }
            }

            $characters = '0123456789abcdefghijklmnopqrstuvwxyz';
            do {
                $referralId = '';
                for ($i = 0; $i < 4; $i++) {
                    $referralId .= $characters[random_int(0, strlen($characters) - 1)];
                }
            } while (Customer::where('referral_id', $referralId)->exists());

            try {
                $customer = new Customer();
                $customer->fname = $fullName;
                $customer->lname = '';
                $customer->name = $fullName;
                $customer->mobile = $mobile !== '' ? $mobile : null;
                $customer->active = true;
                $customer->moshtari_code = $item['code'];
                $customer->referral_id = $referralId;
                $customer->type = 2;
                if ($mobile !== '') {
                    $customer->password = $mobile;
                }
                $customer->save();
                $success++;
            } catch (\Throwable $e) {
                $failed++;
                $msg = $e->getMessage();
                if ($e instanceof UnprocessableEntityHttpException) {
                    $msg = $e->getMessage();
                } elseif ($e instanceof \Illuminate\Database\QueryException && (int) ($e->errorInfo[1] ?? 0) === 1062) {
                    $msg = 'شماره موبایل تکراری است';
                }
                $errors[] = ['name' => $item['name'], 'code' => $item['code'], 'error' => $msg];
            }
        }

        return response()->json([
            'ok' => true,
            'success' => $success,
            'failed' => $failed,
            'errors' => $errors,
        ]);
    }

    /**
     * حذف مشتریانِ خرابِ واردشده از زرین (نام خالی) برای پاک‌سازی import ناقص.
     * با dry_run=1 فقط تعداد و نمونه را نشان می‌دهد و چیزی حذف نمی‌کند.
     */
    public function rollbackImport(Request $request): \Illuminate\Http\JsonResponse
    {
        $baseQuery = fn () => Customer::whereNotNull('moshtari_code')
            ->where(function ($q) {
                $q->whereNull('name')->orWhere('name', '');
            });

        $count = $baseQuery()->count();
        $sample = $baseQuery()
            ->select('id', 'fname', 'name', 'mobile', 'moshtari_code', 'created_at')
            ->orderByDesc('id')
            ->limit(20)
            ->get();

        if ($request->boolean('dry_run')) {
            return response()->json([
                'dry_run' => true,
                'count' => $count,
                'sample' => $sample,
            ]);
        }

        $deleted = $baseQuery()->forceDelete();

        return response()->json([
            'ok' => true,
            'deleted' => $deleted,
        ]);
    }

    public function retrySanad($id)
    {
        $zarin = Zarin::with('customer')->findOrFail($id);
        $result = $this->sync()->retry($zarin);

        return response()->json($result, ($result['ok'] ?? false) ? 200 : 422);
    }

    public function registerCustomer($customerId)
    {
        $customer = Customer::findOrFail($customerId);
        $result = $this->sync()->registerCustomer($customer);

        return response()->json($result, ($result['ok'] ?? false) ? 200 : 422);
    }

    private function resolveProductId(array $data, ?Zarin $existing = null): ?int
    {
        if (!empty($data['product']['id'])) {
            return (int) $data['product']['id'];
        }
        if (!empty($data['product_id'])) {
            return (int) $data['product_id'];
        }

        $orderId = $data['order']['id'] ?? ($existing->order_id ?? null);
        if ($orderId) {
            $order = Order::find($orderId);
            if ($order && !empty($order->product_id)) {
                return (int) $order->product_id;
            }
        }

        return null;
    }

    public function storeTrade($data, ?Zarin $existing = null)
    {
        if (empty($data['customer_id']) && $existing && $existing->order_id) {
            $order = Order::find($existing->order_id);
            if ($order) {
                $data = array_merge($data, [
                    'customer_id' => $existing->customer_id,
                    'amount' => $existing->amount,
                    'direction' => $order->direction,
                    'price' => $order->price,
                    'total_price' => $order->total_price,
                    'pay_at' => $existing->date,
                    'product' => [
                        'id' => $order->product_id,
                        'metal_id' => $existing->type === 'طلا' ? 1 : 2,
                    ],
                    'order' => ['id' => $existing->order_id],
                ]);
            }
        }

        if (!isset($data['customer_id']) || !isset($data['amount'])) {
            return request()->expectsJson()
                ? response()->json(['error' => 'Data missing: customer_id or amount'], 422)
                : false;
        }

        $customer = Customer::where('id', $data['customer_id'])->first();

        if ($customer && ($customer->moshtari_code === null)) {
            $this->createCustomerInZarin($customer->id);
            $customer = Customer::where('id', $data['customer_id'])->first();
        }

        if (!$customer || empty($customer->moshtari_code)) {
            return false;
        }

        $amount = $data['amount'];
        $orderId = $data['order']['id'] ?? ($existing->order_id ?? null);
        $metalId = (int) ($data['product']['metal_id'] ?? 1);

        $data['handler'] = 'storeTrade';
        if ($existing && empty($existing->data)) {
            $existing->update(['data' => json_encode($data, JSON_UNESCAPED_UNICODE | JSON_PRETTY_PRINT)]);
        }
        $zarin = $existing ?? Zarin::create([
            'customer_id' => $customer->id,
            'desc' => $data['direction'] == 1 ? 'خرید آبشده' : 'فروش آبشده',
            'amount' => $amount,
            'order_id' => $orderId,
            'date' => $data['pay_at'] ?? Carbon::now(),
            'type' => $metalId == 1 ? 'طلا' : 'نقره',
            'created_at' => Carbon::now(),
            'data' => json_encode($data, JSON_UNESCAPED_UNICODE | JSON_PRETTY_PRINT),
        ]);

        $isStore = app(ConfigService::class)->isStore();
        $productId = $this->resolveProductId($data, $existing);

        try {
            if ($isStore && $productId) {
                $product = Product::find($productId);
                if (!$product) {
                    $this->sync()->markFailed($zarin, null, 'محصول برای ثبت سند زرین پیدا نشد');
                    return false;
                }

                $karResult = $this->ensureZarinKarForProduct($product);
                if (empty($karResult['ok'])) {
                    $this->sync()->markFailed($zarin, $karResult, 'کد کار زرین برای محصول آماده نشد');
                    return false;
                }

                $params = [
                    'kind' => 'sabtSanadTedadi',
                    'parDar' => ((int) ($data['direction'] ?? 0) === 1) ? -1 : 1,
                    'idHesab' => $customer->moshtari_code,
                    'idKar' => (int) $karResult['idKar'],
                    'fi' => $data['price'] ?? 0,
                    'tedad' => $amount,
                    'sharh' => $data['direction'] == 1 ? 'خرید' : 'فروش',
                    'uid' => $this->zarinUid('30', $orderId),
                ];
            } else {
                $params = [
                    'kind' => 'pooli',
                    'radif' => 1,
                    'korf' => ((int) ($data['direction'] ?? 0) === 1) ? 'f' : 'k',
                    'poolorvazn' => 'vazn',
                    'meghdar' => $amount,
                    'fi' => $data['price'] ?? 0,
                    'hesab' => $customer->moshtari_code,
                    'sharh' => $data['direction'] == 1 ? 'خرید آبشده' : 'فروش آبشده',
                    'ayar' => '750',
                    'movaghat' => '',
                    'idFactor' => '',
                    'uid' => $this->zarinUid('10', $orderId),
                ];
            }

            $http = $this->zarinRequest($params);
            if (!$http) {
                $this->sync()->markFailed($zarin, null, 'تنظیمات زرین کامل نیست');
                return 'تنظیمات زرین کامل نیست. zarin_api یا zarin_token تنظیم نشده است.';
            }

            [$response, $httpError] = $this->zarinDecodeResponse($http);
            if ($httpError) {
                $this->sync()->markFailed($zarin, $response ?? $httpError, $httpError);
                return false;
            }
        } catch (\Exception $e) {
            $this->sync()->markFailed($zarin, $e->getMessage());
            return $e->getMessage();
        }

        $flat = $this->extractResponseRow(is_array($response) ? $response : null);

        if ($this->sync()->responseOk(is_array($response) ? $response : []) || $this->sync()->responseOk($flat)) {
            $this->sync()->markSuccess($zarin, is_array($response) ? $response : $flat, $data);
            return $data;
        }

        $this->sync()->markFailed($zarin, $response, 'ثبت سند معامله در زرین ناموفق بود');
        return false;
    }

    // direction: 0 = daryaft az moshtari, 1 = pardakht be moshtari
    public function wallet($data, ?Zarin $existing = null)
    {
        if (empty($data['customer_id']) && $existing) {
            $data = array_merge($data, [
                'customer_id' => $existing->customer_id,
                'value' => $existing->amount,
                'direction' => str_contains((string) $existing->desc, 'برداشت') ? 1 : 0,
                'withdraw_id' => $existing->withdraw_id,
            ]);
        }

        if (!isset($data['customer_id']) || !isset($data['value'])) {
            return request()->expectsJson()
                ? response()->json(['error' => 'Data missing: customer_id or value'], 422)
                : false;
        }

        $customer = Customer::where('id', $data['customer_id'])->first();

        if ($customer && ($customer->moshtari_code === null)) {
            $this->createCustomerInZarin($customer->id);
            $customer = Customer::where('id', $data['customer_id'])->first();
        }

        if (!$customer || empty($customer->moshtari_code)) {
            return false;
        }

        $data['handler'] = 'wallet';
        $zarin = $existing ?? Zarin::create([
            'customer_id' => $customer->id,
            'desc' => $data['direction'] == 0 ? 'شارژ حساب' : 'برداشت از حساب',
            'amount' => $data['value'],
            'type' => 'ريال',
            'date' => Carbon::now(),
            'created_at' => Carbon::now(),
            'withdraw_id' => $data['withdraw_id'] ?? null,
            'data' => json_encode($data, JSON_UNESCAPED_UNICODE | JSON_PRETTY_PRINT),
        ]);

        if ($existing && empty($existing->data)) {
            $existing->update(['data' => json_encode($data, JSON_UNESCAPED_UNICODE | JSON_PRETTY_PRINT)]);
        }

        $prices = $this->lastPriceData();
        $isWithdraw = (int) ($data['direction'] ?? 0) === 1;
        $mazaneh = $isWithdraw ? (int) ($prices['sell'] ?? 0) : (int) ($prices['buy'] ?? 0);
        if ($mazaneh <= 0) {
            $mazaneh = 1;
        }

        $uidSource = $data['withdraw_id'] ?? $zarin->id;

        try {
            $http = $this->zarinRequest([
                'kind' => 'pooli',
                'radif' => 1,
                'korf' => $isWithdraw ? 'f' : 'k',
                'poolorvazn' => 'pool',
                'meghdar' => $data['value'],
                'fi' => $mazaneh,
                'hesab' => $customer->moshtari_code,
                'sharh' => $data['direction'] == 0 ? 'شارژ حساب' : 'برداشت از حساب',
                'ayar' => '750',
                'movaghat' => '',
                'idFactor' => '',
                'uid' => $this->zarinUid('20', $uidSource),
            ]);

            if (!$http) {
                $this->sync()->markFailed($zarin, null, 'تنظیمات زرین کامل نیست');
                return 'تنظیمات زرین کامل نیست. zarin_api یا zarin_token تنظیم نشده است.';
            }

            [$response, $httpError] = $this->zarinDecodeResponse($http);
            if ($httpError) {
                $this->sync()->markFailed($zarin, $response ?? $httpError, $httpError);
                return false;
            }

            Log::info('Zarin wallet response', [
                'data' => $data,
                'response' => $response ?? null,
            ]);
        } catch (\Exception $e) {
            $this->sync()->markFailed($zarin, $e->getMessage());
            return $e->getMessage();
        }

        if ($this->sync()->responseOk(is_array($response) ? $response : [])) {
            $this->sync()->markSuccess($zarin, is_array($response) ? $response : [], $data);
            return $data;
        }

        $this->sync()->markFailed($zarin, $response, 'ثبت سند ریالی در زرین ناموفق بود');
        return false;
    }

    /**
     * پاداش معرفی — همیشه روی حساب معرف (نه کاربر تازه‌ثبت‌نام‌شده).
     */
    public function referrerGoldReward(Customer $invitedCustomer, float $gold, string $desc = 'پاداش بابت معرفی')
    {
        $referrer = $invitedCustomer->referrer();
        if (!$referrer) {
            return false;
        }

        return $this->goldReward([
            'customer_id' => $referrer->id,
            'value' => $gold,
            'desc' => $desc,
        ]);
    }

    /**
     * پاداش/هدیه طلایی — سند وزنی با korf=f (هدیه به مشتری).
     */
    public function goldReward($data, ?Zarin $existing = null)
    {
        if (empty($data['customer_id']) && $existing) {
            $data = array_merge($data, [
                'customer_id' => $existing->customer_id,
                'value' => $existing->amount,
                'desc' => $existing->desc,
            ]);
        }

        if (!isset($data['customer_id'], $data['value'])) {
            return request()->expectsJson()
                ? response()->json(['error' => 'Data missing: customer_id or value'], 422)
                : false;
        }

        $customer = Customer::where('id', $data['customer_id'])->first();
        if (!$customer) {
            return false;
        }

        if ($customer->moshtari_code === null) {
            $this->createCustomerInZarin($customer->id);
            $customer = Customer::where('id', $data['customer_id'])->first();
        }

        if (!$customer || empty($customer->moshtari_code)) {
            return false;
        }

        $amount = abs((float) $data['value']);
        $desc = !empty($data['desc']) ? (string) $data['desc'] : 'پاداش';

        $data['handler'] = 'goldReward';
        $zarin = $existing ?? Zarin::create([
            'customer_id' => $customer->id,
            'desc' => $desc,
            'amount' => $amount,
            'date' => Carbon::now(),
            'type' => 'طلا',
            'created_at' => Carbon::now(),
            'data' => json_encode($data, JSON_UNESCAPED_UNICODE | JSON_PRETTY_PRINT),
        ]);

        if ($existing && empty($existing->data)) {
            $existing->update(['data' => json_encode($data, JSON_UNESCAPED_UNICODE | JSON_PRETTY_PRINT)]);
        }

        $prices = $this->lastPriceData();
        $mazaneh = (int) ($prices['buy'] ?? 0);
        if ($mazaneh <= 0) {
            $mazaneh = 1;
        }

        try {
            $http = $this->zarinRequest([
                'kind' => 'pooli',
                'radif' => 1,
                'korf' => 'f',
                'poolorvazn' => 'vazn',
                'meghdar' => $amount,
                'fi' => $mazaneh,
                'hesab' => $customer->moshtari_code,
                'sharh' => $desc,
                'ayar' => '750',
                'movaghat' => '',
                'idFactor' => '',
                'uid' => $this->zarinUid('50', $zarin->id),
            ]);

            if (!$http) {
                $this->sync()->markFailed($zarin, null, 'تنظیمات زرین کامل نیست');
                return 'تنظیمات زرین کامل نیست. zarin_api یا zarin_token تنظیم نشده است.';
            }

            [$response, $httpError] = $this->zarinDecodeResponse($http);
            if ($httpError) {
                $this->sync()->markFailed($zarin, $response ?? $httpError, $httpError);
                return false;
            }
        } catch (\Exception $e) {
            $this->sync()->markFailed($zarin, $e->getMessage());
            return $e->getMessage();
        }

        if ($this->sync()->responseOk(is_array($response) ? $response : [])) {
            $this->sync()->markSuccess($zarin, is_array($response) ? $response : [], $data);
            return $data;
        }

        $this->sync()->markFailed($zarin, $response, 'ثبت پاداش طلایی در زرین ناموفق بود');
        return false;
    }

    // direction: 1 = واریز طلا (خرید)، 0 = برداشت طلا (فروش)
    public function walletGold($data, ?Zarin $existing = null)
    {
        if (empty($data['customer_id']) && $existing) {
            $data = array_merge($data, [
                'customer_id' => $existing->customer_id,
                'value' => $existing->amount,
                'direction' => str_contains((string) $existing->desc, 'برداشت') ? 0 : 1,
                'withdraw_id' => $existing->withdraw_id,
            ]);
        }

        if (!isset($data['customer_id'], $data['value'])) {
            return request()->expectsJson()
                ? response()->json(['error' => 'Data missing: customer_id or value'], 422)
                : false;
        }

        $customer = Customer::where('id', $data['customer_id'])->first();

        if ($customer && ($customer->moshtari_code === null)) {
            $this->createCustomerInZarin($customer->id);
            $customer = Customer::where('id', $data['customer_id'])->first();
        }

        if (!$customer || empty($customer->moshtari_code)) {
            return false;
        }

        $amount = abs($data['value']);
        $isDeposit = (int) ($data['direction'] ?? 1) === 1;

        $data['handler'] = 'walletGold';
        $zarin = $existing ?? Zarin::create([
            'customer_id' => $customer->id,
            'desc' => $isDeposit ? 'شارژ کیف پول آبشده' : 'برداشت از کیف پول آبشده',
            'amount' => $amount,
            'date' => Carbon::now(),
            'type' => 'طلا',
            'created_at' => Carbon::now(),
            'withdraw_id' => $data['withdraw_id'] ?? null,
            'data' => json_encode($data, JSON_UNESCAPED_UNICODE | JSON_PRETTY_PRINT),
        ]);

        if ($existing && empty($existing->data)) {
            $existing->update(['data' => json_encode($data, JSON_UNESCAPED_UNICODE | JSON_PRETTY_PRINT)]);
        }

        $prices = $this->lastPriceData();
        $mazaneh = $isDeposit ? (int) ($prices['buy'] ?? 0) : (int) ($prices['sell'] ?? 0);
        if ($mazaneh <= 0) {
            $mazaneh = 1;
        }

        $sharh = !empty($data['note'])
            ? $data['note']
            : (!empty($data['desc']) ? $data['desc'] : ($isDeposit ? 'خرید آبشده' : 'فروش آبشده'));
        $data['note'] = $sharh;

        $uidSource = $data['withdraw_id'] ?? $zarin->id;

        try {
            $http = $this->zarinRequest([
                'kind' => 'pooli',
                'radif' => 1,
                'korf' => $isDeposit ? 'f' : 'k',
                'poolorvazn' => 'vazn',
                'meghdar' => $amount,
                'fi' => $mazaneh,
                'hesab' => $customer->moshtari_code,
                'sharh' => $sharh,
                'ayar' => '750',
                'movaghat' => '',
                'idFactor' => '',
                'uid' => $this->zarinUid('21', $uidSource),
            ]);

            if (!$http) {
                $this->sync()->markFailed($zarin, null, 'تنظیمات زرین کامل نیست');
                return 'تنظیمات زرین کامل نیست. zarin_api یا zarin_token تنظیم نشده است.';
            }

            [$response, $httpError] = $this->zarinDecodeResponse($http);
            if ($httpError) {
                $this->sync()->markFailed($zarin, $response ?? $httpError, $httpError);
                return false;
            }
        } catch (\Exception $e) {
            $this->sync()->markFailed($zarin, $e->getMessage());
            return $e->getMessage();
        }

        if ($this->sync()->responseOk(is_array($response) ? $response : [])) {
            $this->sync()->markSuccess($zarin, is_array($response) ? $response : [], $data);
            return $data;
        }

        $this->sync()->markFailed($zarin, $response, 'ثبت سند طلایی کیف پول در زرین ناموفق بود');
        return false;
    }

    public function createCustomerInZarin($customer_id)
    {
        $customer = Customer::findOrFail($customer_id);

        if ($customer->moshtari_code != null) {
            return $customer->moshtari_code;
        }

        $lock = Cache::lock('zarin:register-customer:' . $customer->id, 30);

        if (!$lock->get()) {
            $customer->refresh();

            if ($customer->moshtari_code != null) {
                return $customer->moshtari_code;
            }

            return 'ثبت مشتری در زرین در حال انجام است';
        }

        try {
            $customer->refresh();

            if ($customer->moshtari_code != null) {
                return $customer->moshtari_code;
            }

            $name = $customer->fname ?: ($customer->name ?? ('مشتری ' . $customer->id));
            $family = $customer->lname ?: '';
            $mobile = $customer->mobile ?? '';

            $params = [
                'kind' => 'addhesab',
                'name' => $name,
                'family' => $family,
                'tel' => $mobile,
                'mobile' => $mobile,
                'address' => trim(($customer->province ?? '') . ' ' . ($customer->city ?? '')) ?: 'ثبت نشده',
                'codePosti' => '0000000000',
                'nameG' => $this->zarinCustomerGroupName(),
                'gender' => in_array($customer->gender, ['اقای', 'آقای'], true) ? 'm' : ($customer->gender == 'خانم' ? 'f' : ''),
                'uid' => $this->zarinUid('40', $customer->id),
            ];

            try {
                $http = $this->zarinRequest($params);

                if (!$http) {
                    return 'تنظیمات زرین کامل نیست. zarin_api یا zarin_token تنظیم نشده است.';
                }

                [$response, $httpError] = $this->zarinDecodeResponse($http);
                if ($httpError) {
                    return $httpError;
                }

                $data = $this->extractResponseRow($response);
                $idHesab = $data['idHesab'] ?? null;

                if (!empty($idHesab)) {
                    $customer->moshtari_code = $idHesab;
                    $customer->save();

                    // int برگردان تا با پیام خطای string اشتباه نشود
                    return is_numeric($idHesab) ? (0 + $idHesab) : $idHesab;
                }

                $detail = $data['msg'] ?? $data['message'] ?? $data['detail'] ?? null;
                return $detail ? (string) $detail : 'zarin api error!!!';
            } catch (\Exception $e) {
                return $e->getMessage();
            }
        } finally {
            $lock->release();
        }
    }

    public function healthCheck()
    {
        $http = $this->zarinRequest([
            'kind' => 'version',
        ]);

        [$json, $error] = $this->zarinDecodeResponse($http);

        if ($error) {
            return response()->json([
                'ok' => false,
                'message' => $error,
                'body' => $json,
            ], 422);
        }

        return response()->json([
            'ok' => true,
            'version' => $json['version'] ?? null,
            'message' => $json['message'] ?? 'OK',
            'raw' => $json,
        ]);
    }
}