<?php

namespace App\Services;

use App\Repositories\AuthRepositoryInterface;
use App\DTO\AuthDTO;
use App\DTO\RefreshTokenDTO;
use Illuminate\Support\Str;
use Illuminate\Support\Facades\Auth;

class AuthService
{
    public function __construct(
        protected AuthRepositoryInterface $authRepository,
    ) {}

    public function login(AuthDTO $credentials): ?array
    {
        if (!$this->authRepository->attemptLogin(credentials: $credentials)) {
            return null;
        }

        $user = $this->authRepository->findUserByEmail(email: $credentials->email);
        $deviceId = Str::uuid()->toString();

        $accessToken = $this->authRepository->createAccessToken(user: $user, deviceId: $deviceId);
        $refreshToken = $this->authRepository->createRefreshToken(user: $user, deviceId: $deviceId);

        return [
            'access_token' => $accessToken,
            'refresh_token' => $refreshToken,
            'user' => $user,
            'device_id' => $deviceId,
        ];
    }

    public function refresh(RefreshTokenDTO $refreshToken): ?array
    {
        $tokenModel = $this->authRepository->findToken($refreshToken->refresh_token);

        if (!$tokenModel || !in_array(needle: 'refresh', haystack: $tokenModel->abilities) || $tokenModel->expires_at < now()) {
            return null;
        }

        $user = $tokenModel->tokenable;
        if (!$user) {
            return null;
        }

        $deviceId = Str::afterLast(subject: $tokenModel->name, search: '_');

        $tokens = $this->authRepository->refreshToken($tokenModel, $user, $deviceId);

        return array_merge($tokens, [
            'user' => $user,
            'device_id' => $deviceId,
        ]);
    }

    public function logout(): void
    {
        $user = Auth::user();
        $tokenName = $user->currentAccessToken()->name;
        $deviceId = Str::afterLast($tokenName, '_');
        if (!$user) {
            return;
        }

        $this->authRepository->deleteUserTokensByDevice(user: $user, deviceId: $deviceId);
    }
}