[Error]
enum NativeError {
  "Initialization",
  "Database",
  "Network",
};

enum MessageAck {
    "Received",
    "Seen",
    "Sent",
};

dictionary MessagePreview {
    string sender;
    string text;
    timestamp date;
    MessageAck ack;
};

dictionary Dialog {
    string id;
    string title;
    MessagePreview? last_message;
    boolean pinned;
};

interface LoginProcedure {
    constructor();
    [Throws=NativeError]
    void request_login_code(string phone);
    [Throws=NativeError]
    void sign_in(string code);
};

namespace talaria {
    [Throws=NativeError]
    void init_database(string path);
    [Throws=NativeError]
    void init_client();
    [Throws=NativeError]
    boolean need_login();
    [Throws=NativeError]
    sequence<Dialog> get_dialogs();
    [Throws=NativeError]
    void send_message(string packed, string text);
};