extension_host 0.0.2

package workoss:extension;

world extension {
  import extension-http;
  import platform;

  /// 获取配置 
  import get-settings: func(key: option<string>) -> result<string, string>;  
  /// 下载文件  
  import download-file: func(url: string, file-path: string, file-type: download-file-type) -> result<_,string>;
  /// 让下载后的文件变成可执行文件  
  import make-file-executable: func(file-path: string) -> result<_, string>;
  /// 执行命令 返回命令行执行结果  
  import run-command: func(cmd: terminal-command)->result<list<u8>,string>;

  /// env vars
  type env-vars = list<tuple<string, string>>;
  ///下载文件后缀 解压  
  enum download-file-type {
    /// .gz
    gzip,
    /// .tar.gz
    tar-gzip,
    /// .zip
    zip,
    // uncompressed
    uncompressed,
  }

  enum mime-type {
    //json类型
    json,
    /// 文本
    text,
    /// 二进制
    octet-stream,
    ///图片
    image,
    //音频
    audio,
    ///视频
    video
  }
    

  /// 执行命令
  record terminal-command {
    /// bin name
    program: string,
    /// 当前目录
    current-dir: option<string>,
    /// 参数
    args: option<list<string>>,
    /// 环境变量
    envs: option<env-vars>,
  }
  /// 输入  
  record plugin-input {
     body: option<list<u8>>,
     mime-type: mime-type,
     envs: option<env-vars>,
  }
  /// 输出  
  record plugin-output {
    body: option<list<u8>>,
    mime-type: mime-type,
  }

  /// 初始化插件
  export init-plugin: func();   
  /// 执行插件  
  export run-plugin: func(input: plugin-input) -> result<plugin-output,string>;  
}