<?php

declare(strict_types=1);

namespace App\Http\Controllers\Api;

use App\Constants\ErrorCode;
use App\Http\Controllers\Controller;
use App\Services\Auth\TokenService;
use App\Traits\ApiResponse;
use Illuminate\Http\JsonResponse;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Log;
use Illuminate\Validation\ValidationException;

class AuthController extends Controller
{
    use ApiResponse;

    public function __construct(
        private readonly TokenService $tokenService,
    ) {}

    /**
     * 獲取訪問令牌
     */
    public function getAccessToken(Request $request): JsonResponse
    {
        try {
            $validated = $request->validate([
                'auth_token' => 'required|string|size:64',
            ]);

            $authTokenData = $this->tokenService->validateAuthToken($validated['auth_token']);

            if (!$authTokenData) {
                return $this->error(
                    ErrorCode::TOKEN_INVALID,
                    '認證令牌無效。'
                );
            }

            if (now()->isAfter($authTokenData['expires_at'])) {
                return $this->error(
                    ErrorCode::TOKEN_EXPIRED,
                    '認證令牌已過期，請重新獲取。'
                );
            }

            $result = $this->tokenService->generateAccessToken($authTokenData);

            return $this->success([
                'access_token' => $result['access_token'],
                'expires_in' => $result['expires_in'],
                'token_type' => $result['token_type'],
            ]);

        } catch (ValidationException $e) {
            return $this->error(
                ErrorCode::VALIDATION_ERROR,
                ErrorCode::getMessage(ErrorCode::VALIDATION_ERROR),
                $e->errors()
            );
        } catch (\Exception $e) {
            Log::error('Error generating access token', [
                'error' => $e->getMessage(),
                'trace' => $e->getTraceAsString(),
            ]);

            return $this->error(
                ErrorCode::SERVER_ERROR,
                ErrorCode::getMessage(ErrorCode::SERVER_ERROR)
            );
        }
    }
}