// Copyright 2018 Ryan Dahl <ry@tinyclouds.org>
// All rights reserved. MIT License.
syntax = "proto3";
package main;

message BaseMsg {
  string channel = 1;
  bytes payload = 2;
}

message Msg {
  enum Command {
    ERROR = 0;
    START = 1;
    CODE_FETCH = 2;
    CODE_FETCH_RES = 3;
    CODE_CACHE = 4;
    EXIT = 5;
    TIMER_START = 6;
    TIMER_READY = 7;
    TIMER_CLEAR = 8;
    FETCH_REQ = 9;
    FETCH_RES = 10;
    READ_FILE_SYNC = 11;
    READ_FILE_SYNC_RES = 12;
    WRITE_FILE_SYNC = 13;
  }
  Command command = 1;

  // We avoid creating a message for each command (and use oneof or any types)
  // In order to reduce code in the size of the generated javascript
  // "msg.pb.js". It seems that each new message adds 20k and we want to
  // potentially add many hundreds of commands. Therefore we just prefix command
  // arguments by their name.

  // ERROR
  string error = 2;

  // START
  string start_cwd = 10;
  repeated string start_argv = 11;
  bool start_debug_flag = 12;
  string start_main_js = 13;  // The contents of dist/main.js
  string start_main_map = 14; // The contents of dist/main.map

  // CODE_FETCH
  string code_fetch_module_specifier = 20;
  string code_fetch_containing_file = 21;

  // CODE_FETCH_RES
  // If it's a non-http module, moduleName and filename will be the same.
  // For http modules, moduleName is its resolved http URL, and filename
  // is the location of the locally downloaded source code.
  string code_fetch_res_module_name = 30;
  string code_fetch_res_filename = 31;
  string code_fetch_res_source_code = 32;
  string code_fetch_res_output_code = 33; // Non-empty only if cached.

  // CODE_CACHE
  string code_cache_filename = 41;
  string code_cache_source_code = 42;
  string code_cache_output_code = 43;

  // EXIT
  int32 exit_code = 50;

  // TIMER_START
  int32 timer_start_id = 60;
  bool timer_start_interval = 61;
  int32 timer_start_duration = 62; // In milliseconds.

  // TIMER_READY
  int32 timer_ready_id = 70;
  bool timer_ready_done = 71;

  // TIMER_CLEAR
  int32 timer_clear_id = 80;

  // FETCH_REQ
  int32 fetch_req_id = 90;
  string fetch_req_url = 91;
  // repeated string fetch_req_header_line = 91

  // FETCH_RES
  int32 fetch_res_id = 100;
  int32 fetch_res_status = 101;
  repeated string fetch_res_header_line = 102;
  bytes fetch_res_body = 103;

  // READ_FILE_SYNC
  string read_file_sync_filename = 110;

  // READ_FILE_SYNC_RES
  bytes read_file_sync_data = 120;

  // WRITE_FILE_SYNC
  string write_file_sync_filename = 130;
  bytes write_file_sync_data = 131;
  uint32 write_file_sync_perm = 132;
  // write_file_sync_perm specified by https://godoc.org/os#FileMode
}