<?php

namespace App\Http\Controllers\Api;

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

class WalletController
{
    public function __construct(protected WalletService $walletService) {}

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

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

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

        if (!$wallet) {
            return response()->json([
                'balance' => 0,
                'currency' => 'IRR',
            ]);
        }

        return response()->json([
            'balance' => $wallet->balance,
            'currency' => 'IRR',
        ]);
    }

    public function recharge(Request $request): JsonResponse
    {
        try {
            $validated = $request->validate([
                'amount' => ['required', 'numeric', 'min:10000'],
                'description' => ['nullable', 'string', 'max:500'],
            ]);
        } catch (ValidationException $e) {
            return response()->json([
                'message' => 'Validation failed',
                'errors' => $e->errors(),
            ], 422);
        }

        $user = $request->user();

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

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

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

        $transaction = $this->walletService->deposit(
            $wallet,
            $validated['amount'],
            $validated['description'] ?? 'شارژ آنلاین کیف پول',
        );

        return response()->json([
            'message' => 'شارژ با موفقیت انجام شد',
            'wallet_id' => $wallet->id,
            'balance' => $wallet->fresh()->balance,
            'transaction_id' => $transaction->id,
            'amount' => $transaction->amount,
        ]);
    }

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

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

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

        if (!$wallet) {
            return response()->json(['transactions' => [], 'total' => 0]);
        }

        $perPage = $request->query('per_page', 15);

        $transactions = $wallet->transactions()
            ->orderByDesc('created_at')
            ->paginate($perPage);

        return response()->json([
            'transactions' => $transactions->map(fn ($t) => [
                'id' => $t->id,
                'amount' => $t->amount,
                'type' => $t->type,
                'description' => $t->description,
                'created_at' => $t->created_at->toIso8601String(),
            ]),
            'total' => $transactions->total(),
            'current_page' => $transactions->currentPage(),
            'last_page' => $transactions->lastPage(),
        ]);
    }

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

        if (!$user || !$user->isSuperAdmin()) {
            return response()->json(['message' => 'Forbidden'], 403);
        }

        try {
            $validated = $request->validate([
                'user_id' => ['required', 'exists:users,id'],
                'amount' => ['required', 'numeric', 'min:1'],
                'description' => ['nullable', 'string', 'max:500'],
            ]);
        } catch (ValidationException $e) {
            return response()->json([
                'message' => 'Validation failed',
                'errors' => $e->errors(),
            ], 422);
        }

        $targetUser = User::findOrFail($validated['user_id']);
        $wallet = $targetUser->wallet()->first();

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

        $transaction = $this->walletService->deposit(
            $wallet,
            $validated['amount'],
            $validated['description'] ?? 'شارژ دستی توسط ادمین',
        );

        return response()->json([
            'message' => 'شارژ دستی با موفقیت انجام شد',
            'wallet_id' => $wallet->id,
            'target_user_id' => $targetUser->id,
            'balance' => $wallet->fresh()->balance,
            'transaction_id' => $transaction->id,
            'amount' => $transaction->amount,
        ]);
    }
}