<?php

namespace App\Http\Controllers\Api;

use App\Models\User;
use App\Models\Wallet;
use App\Services\PaymentGatewayService;
use Illuminate\Http\JsonResponse;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Validator;
use Illuminate\Validation\ValidationException;

class PaymentController
{
    public function __construct(protected PaymentGatewayService $gateway) {}

    public function request(Request $request): JsonResponse
    {
        $user = $request->user();

        if (!$user) {
            return response()->json(['message' => 'Unauthorized'], 401);
        }

        try {
            $validated = $request->validate([
                'amount' => ['required', 'numeric', 'min:1000'],
                'description' => ['nullable', 'string', 'max:500'],
            ]);
        } catch (ValidationException $e) {
            return response()->json([
                'message' => 'Validation failed',
                'errors' => $e->errors(),
            ], 422);
        }

        $wallet = $user->wallet()->first();

        if (!$wallet) {
            $wallet = Wallet::create([
                'user_id' => $user->id,
                'balance' => 0,
            ]);
        }

        $result = $this->gateway->requestPayment(
            $user,
            $validated['amount'],
            $validated['description'] ?? 'شارچ کیف پول'
        );

        if (!$result['success']) {
            return response()->json($result, 400);
        }

        return response()->json([
            'message' => 'درخواست پرداخت ایجاد شد',
            'authority' => $result['authority'],
            'payment_url' => $result['payment_url'] ?? null,
            'mock' => $result['mock'] ?? false,
        ]);
    }

    public function callback(Request $request): JsonResponse
    {
        $authority = $request->query('Authority');
        $status = $request->query('Status');

        if (!$authority) {
            return response()->json(['message' => 'Authority not provided'], 400);
        }

        if ($status !== 'OK') {
            return response()->json([
                'message' => 'پرداخت لغو شد.',
                'status' => $status,
            ]);
        }

        $result = $this->gateway->verifyPayment($authority);

        if (!$result['success']) {
            return response()->json($result, 400);
        }

        return response()->json([
            'message' => $result['message'],
            'ref_id' => $result['ref_id'],
            'amount' => $result['amount'],
        ]);
    }

    public function status(Request $request, string $authority): JsonResponse
    {
        $result = $this->gateway->checkPayment($authority);

        if (!$result['success']) {
            return response()->json($result, 404);
        }

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