clogram

A Clojure library for Telegram Bot API.

Installation

Add [dev.meinside/clogram "0.1.2"] to the dependency of your project.clj file.

Usage

Interactively

(require '[meinside.clogram :as cg])

;; generate your bot token with this guide: https://core.telegram.org/bots#3-how-do-i-create-a-bot
(def token "0123456789:abcdefghijklmnopqrstuvwxyz")

;; create a new bot
(def bot (cg/new-bot token
                     :verbose? true))

;; get updates from your bot
(cg/get-update bot)

;; send 'typing...' to chat id: 123456
(cg/send-chat-action bot 123456 :typing)

;; send a message to chat id: 123456
(cg/send-message bot 123456 "this is a message from bot")

Long-Polling

Sample Application (Echo)

;; clogram-sample/src/core.clj
;;
;; run with: $ lein run -m clogram-sample.core

(ns clogram-sample.core
  (:gen-class)
  (:require [meinside.clogram :as cg]))

(def token "0123456789:abcdefghijklmnopqrstuvwxyz")
(def interval 1)
(def verbose? false)
;(def verbose? true)
(def my-bot (cg/new-bot token :verbose? verbose?))

(defn echo
  "echo function"
  [bot update]
  (println ">>> received update:" update)

  (let [chat-id (get-in update [:message :chat :id])
        reply-to (get-in update [:message :message-id])
        text (get-in update [:message :text])]
    ;; 'typing...'
    (let [result (cg/send-chat-action bot chat-id :typing)]
      (when (not (:ok result))
        (println "*** failed to send chat action:" (:reason-pharse result))))

    (if (= text "/terminate")
      ;; process /terminate command
      (do
        (println ">>> received: /terminate")

        (cg/stop-polling-updates bot)) ;; stop polling

      ;; or other texts
      ;; and reply to the received message
      (let [echoed-text (str "echo: " text)
            result (cg/send-message bot chat-id echoed-text
                     :reply-to-message-id reply-to)]
        (when (not (:ok result))
          (println "*** failed to send message:" (:reason-phrase result)))))))

(defn -main
  "main function"
  [& _]
  (println ">>> launching application...")

  ;; add shutdown hook
  (.addShutdownHook (Runtime/getRuntime)
                    (Thread. #(do
                                (println ">>> terminating application...")

                                (cg/stop-polling-updates my-bot)))) ;; stop polling

  ;; busy-wait for polling
  (cg/poll-updates my-bot interval echo))

Using Webhook

TODO - Add guides here.

Todo

• [x] Add functions for long-polling updates.
• [ ] (WIP) Add tests.
• [ ] Add functions for webhook.

License

MIT