<?php

namespace App\Services\Api\Admin;

use App\Models\AdminRefreshToken;
use Carbon\CarbonInterface;
use Illuminate\Support\Facades\DB;
use Illuminate\Support\Str;
use Illuminate\Validation\ValidationException;
use Tymon\JWTAuth\Facades\JWTAuth;

class AdminRefreshTokenService
{
    public function create(int $userId, CarbonInterface $expiresAt): string
    {
        $rawToken = Str::random(64);

        AdminRefreshToken::create([
            'user_id' => $userId,
            'token' => hash('sha256', $rawToken),
            'expires_at' => $expiresAt,
        ]);

        return $rawToken;
    }

    public function rotate(string $rawToken): array
    {
        return DB::transaction(function () use ($rawToken): array {
            $record = AdminRefreshToken::where('token', hash('sha256', $rawToken))
                ->lockForUpdate()
                ->first();

            if (! $record || $record->expires_at->isPast()) {
                $record?->delete();

                throw ValidationException::withMessages([
                    'refresh_token' => ['Refresh token không hợp lệ hoặc đã hết hạn.'],
                ]);
            }

            $user = $record->user;
            if (! $user) {
                $record->delete();

                throw ValidationException::withMessages([
                    'refresh_token' => ['Tài khoản không hợp lệ.'],
                ]);
            }

            $expiresAt = $record->expires_at->copy();
            $record->delete();
            $newRefreshToken = $this->create($user->id, $expiresAt);

            return [
                'user' => $user,
                'token' => JWTAuth::fromUser($user),
                'refresh_token' => $newRefreshToken,
                'refresh_expires_in' => (int) max(0, now()->diffInSeconds($expiresAt, false)),
            ];
        });
    }

    public function revoke(string $rawToken): void
    {
        AdminRefreshToken::where('token', hash('sha256', $rawToken))->delete();
    }
}