chore: apply task changes

pkg/config/config.go

@@ -23,6 +23,7 @@ type Config struct {
 	JWT          JWTConfig          `mapstructure:"jwt"`
 	DefaultAdmin DefaultAdminConfig `mapstructure:"default_admin"`
 	Storage      StorageConfig      `mapstructure:"storage"`
+	Gateway      GatewayConfig      `mapstructure:"gateway"`
 }
 
 // ServerConfig HTTP 服务器配置
@@ -130,6 +131,14 @@ type StorageConfig struct {
 	TempDir  string        `mapstructure:"temp_dir"` // 临时文件目录
 }
 
+// GatewayConfig Gateway 服务配置
+type GatewayConfig struct {
+	BaseURL   string `mapstructure:"base_url"`   // Gateway API 基础 URL
+	AppID     string `mapstructure:"app_id"`     // 应用 ID
+	AppSecret string `mapstructure:"app_secret"` // 应用密钥
+	Timeout   int    `mapstructure:"timeout"`    // 超时时间（秒）
+}
+
 // S3Config S3 兼容存储配置
 type S3Config struct {
 	Endpoint        string `mapstructure:"endpoint"`          // 服务端点（如：http://obs-helf.cucloud.cn）
@@ -270,6 +279,22 @@ func (c *Config) Validate() error {
 		return fmt.Errorf("invalid configuration: jwt.refresh_token_ttl: duration out of range (current value: %s, expected: 24h-720h)", c.JWT.RefreshTokenTTL)
 	}
 
+	// Gateway 验证（可选，配置 BaseURL 时才验证其他字段）
+	if c.Gateway.BaseURL != "" {
+		if !strings.HasPrefix(c.Gateway.BaseURL, "http://") && !strings.HasPrefix(c.Gateway.BaseURL, "https://") {
+			return fmt.Errorf("invalid configuration: gateway.base_url: must start with http:// or https:// (current value: %s)", c.Gateway.BaseURL)
+		}
+		if c.Gateway.AppID == "" {
+			return fmt.Errorf("invalid configuration: gateway.app_id: must be non-empty when base_url is configured")
+		}
+		if c.Gateway.AppSecret == "" {
+			return fmt.Errorf("invalid configuration: gateway.app_secret: must be non-empty when base_url is configured")
+		}
+		if c.Gateway.Timeout < 5 || c.Gateway.Timeout > 300 {
+			return fmt.Errorf("invalid configuration: gateway.timeout: timeout out of range (current value: %d, expected: 5-300 seconds)", c.Gateway.Timeout)
+		}
+	}
+
 	return nil
 }