Using Tourmaline in Lucky

tmbot_handler.cr

# Somewhere in src/handlers ...
require "tourmaline"

module Tourmaline  
  # Sample bot
  class EchoBot < Tourmaline::Client
    @[Command("echo")]
    def echo_command(ctx)
      ctx.message.reply(ctx.text)
    end
  end

  # Tourmaline Handler
  class TMBotHandler
    include HTTP::Handler

    property bot : Tourmaline::Client
    property path : String

    # Handle requests with given path 
    def initialize(path = nil)
      @bot = EchoBot.new(bot_token: ENV["BOT_TOKEN"])
      @path = path || "/webhook/#{bot.bot.username}"

      # See original Kemal handler for details
      # check_config if Lucky::Env.production?
    end

    # Just match path and method
    def only_match?(context)
      context.request.path == @path && context.request.method == "POST"
    end

    def call(context)
      return call_next(context) unless only_match?(context)
      if body = context.request.body
        # Extract data from Tgm
        update = Tourmaline::Update.from_json(body)
        # Send update to your bot 
        @bot.handle_update(update)
      end
    end
  end
end

See details in https://luckyframework.org/guides/http-and-routing/http-handlers

src/app_server.cr

class App < Lucky::BaseAppServer
  def middleware
    [
      Lucky::HttpMethodOverrideHandler.new,
      Lucky::LogHandler.new,
      Tourmaline::TMBotHandler,  # Add this line
      Lucky::ErrorHandler.new(action: Errors::Show),
      Lucky::RouteHandler.new,
      Lucky::StaticFileHandler.new("./public", false),
      Lucky::RouteNotFoundHandler.new,
    ]
  end
end

Thats all.

This is pretty awesome. I like that you managed to integrate Tourmaline with Lucky. I'll definitely be hanging on to this and adding it to the documentation.