Using Swift REPL for calling API methods

Using Swift REPL for calling API methods

A read–eval–print loop (REPL) allows executing arbitrary Swift commands and seeing their output instantly.

Clone the library and build any sample project:

git clone https://github.com/zmeyc/telegram-bot-swift.git
cd telegram-bot-swift/Examples/hello-bot
swift build

Currently there are unresolved issues with importing frameworks when running REPL directly, so as a workaround let's run it using lldb:

export HELLO_BOT_TOKEN="token obtained from BotFather"
lldb -o run .build/debug/hello-bot

Expected output:

(lldb) target create ".build/debug/hello-bot"
Current executable set to '.build/debug/hello-bot' (x86_64).
(lldb) run
endpoint: getMe, data: 
Ready to accept commands

Send something to your bot and write down from.id:

{
  "update_id" : 642225283,
  "message" : {
    ...
    "from" : {
      "username" : "username",
      "id" : 78440479, <----------- from.id
      "last_name" : "Lastname",
      "first_name" : "Firstname"
    }
  }
}

Press CTRL-C to pause execution, then at lldb prompt type:

repl

REPL prompt will appear:

  1>  

Note that when using Xcode, you can skip all of this and simply place a breakpoint in main loop, then in debugger run repl.

Init a bot instance:

import TelegramBot
let bot = TelegramBot(token: readToken("HELLO_BOT_TOKEN"))

Bot is now ready to execute commands.