<?php

declare(strict_types=1);

namespace App\Http\Controllers\Api\Admin;

use App\Http\Controllers\Controller;
use App\Models\Admin;
use App\Services\LogService;
use Illuminate\Http\JsonResponse;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Auth;
use Illuminate\Support\Facades\Hash;
use Illuminate\Support\Facades\Log;
use Illuminate\Validation\ValidationException;

class AuthController extends Controller
{
    public function __construct(
        private readonly LogService $logService
    ) {}

    public function login(Request $request): JsonResponse
    {
        try {
            $validated = $request->validate([
                'username' => 'required|string',
                'password' => 'required|string',
            ]);

            if (!Auth::guard('admin')->attempt($validated)) {
                return response()->json([
                    'error' => 'invalid_credentials',
                    'message' => '用户名或密码错误。',
                ], 401);
            }

            /** @var Admin $admin */
            $admin = Auth::guard('admin')->user();

            $this->logService->logOperation(
                'admin',
                $admin->id,
                'Admin logged in'
            );

            return response()->json([
                'id' => $admin->id,
                'username' => $admin->username,
                'email' => $admin->email,
                'role' => $admin->role,
            ]);

        } catch (ValidationException $e) {
            return response()->json([
                'error' => 'validation_error',
                'message' => '请求参数验证失败。',
                'errors' => $e->errors(),
            ], 422);
        } catch (\Exception $e) {
            Log::error('Error during admin login', [
                'error' => $e->getMessage(),
                'trace' => $e->getTraceAsString(),
            ]);

            return response()->json([
                'error' => 'server_error',
                'message' => '服务器内部错误。',
            ], 500);
        }
    }

    public function logout(Request $request): JsonResponse
    {
        /** @var Admin $admin */
        $admin = Auth::guard('admin')->user();

        Auth::guard('admin')->logout();
        $request->session()->invalidate();
        $request->session()->regenerateToken();

        $this->logService->logOperation(
            'admin',
            $admin->id,
            'Admin logged out'
        );

        return response()->json([
            'message' => '已成功退出登录。',
        ]);
    }

    public function changePassword(Request $request): JsonResponse
    {
        try {
            $validated = $request->validate([
                'current_password' => 'required|string',
                'new_password' => 'required|string|min:8|confirmed',
            ]);

            /** @var Admin $admin */
            $admin = Auth::guard('admin')->user();

            if (!Hash::check($validated['current_password'], $admin->password)) {
                return response()->json([
                    'error' => 'invalid_password',
                    'message' => '当前密码错误。',
                ], 422);
            }

            $admin->update([
                'password' => Hash::make($validated['new_password']),
            ]);

            $this->logService->logOperation(
                'admin',
                $admin->id,
                'Changed password'
            );

            return response()->json([
                'message' => '密码已成功修改。',
            ]);

        } catch (ValidationException $e) {
            return response()->json([
                'error' => 'validation_error',
                'message' => '请求参数验证失败。',
                'errors' => $e->errors(),
            ], 422);
        } catch (\Exception $e) {
            Log::error('Error changing admin password', [
                'error' => $e->getMessage(),
                'trace' => $e->getTraceAsString(),
            ]);

            return response()->json([
                'error' => 'server_error',
                'message' => '服务器内部错误。',
            ], 500);
        }
    }
}