<?php

namespace App\Module\OpenAPI\Validations;

use App\Module\OpenAPI\Models\OpenApiApp;
use App\Module\OpenAPI\Validators\AppExistenceValidator;
use App\Module\OpenAPI\Validators\AppStatusValidator;
use App\Module\OpenAPI\Validators\ScopePermissionValidator;
use UCore\ValidationCore;

/**
 * 令牌请求验证类
 */
class TokenRequestValidation extends ValidationCore
{
    /** @var OpenApiApp|null 应用对象，由 AppExistenceValidator 设置 */
    public ?OpenApiApp $app = null;

    /** @var array|null 权限范围列表，由验证器处理后设置 */
    public ?array $scopes = null;

    /**
     * 验证规则
     */
    public function rules($rules = []): array
    {
        return [
            // 基础验证
            ['grant_type', 'required'],
            ['grant_type', 'in', 'range' => ['client_credentials', 'authorization_code', 'refresh_token']],
            
            // 客户端凭证验证
            ['client_id', 'required', 'when' => function($data) {
                return in_array($data['grant_type'] ?? '', ['client_credentials', 'authorization_code']);
            }],
            ['client_secret', 'required', 'when' => function($data) {
                return in_array($data['grant_type'] ?? '', ['client_credentials', 'authorization_code']);
            }],
            
            // 授权码验证
            ['code', 'required', 'when' => function($data) {
                return ($data['grant_type'] ?? '') === 'authorization_code';
            }],
            
            // 刷新令牌验证
            ['refresh_token', 'required', 'when' => function($data) {
                return ($data['grant_type'] ?? '') === 'refresh_token';
            }],

            // 业务验证（按顺序执行）
            [
                'client_id', new AppExistenceValidator($this, ['client_secret', 'app']),
                'msg' => '应用不存在或密钥错误',
                'when' => function($data) {
                    return isset($data['client_id']) && isset($data['client_secret']);
                }
            ],
            [
                'client_id', new AppStatusValidator($this, ['app']),
                'msg' => '应用状态异常',
                'when' => function($data) {
                    return isset($data['client_id']);
                }
            ],
            [
                'scope', new ScopePermissionValidator($this, ['app', 'scopes']),
                'msg' => '权限范围验证失败',
                'when' => function($data) {
                    return isset($data['scope']) && isset($data['client_id']);
                }
            ],
        ];
    }

    /**
     * 默认值
     */
    public function default(): array
    {
        return [
            'scope' => '',
        ];
    }
}