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(require-extension telebot
(prefix telebot telebot:))
(use srfi-69)
(use extras)
(use data-structures)
(define (resolve-query query tree)
(fold (lambda (x y) (alist-ref x y))
tree
query))
(define token (car (command-line-arguments)))
(define conversations (make-hash-table))
(define (send chat_id text)
(telebot:sendMessage token
chat_id: chat_id
text: text))
(define (print-failed-guess chat_id answer guess)
(print "User " chat_id " guessed " guess " instead of " answer))
(define (make-conversation chat_id)
(let ((chat_id chat_id)
(answer (random 100)))
(lambda (text)
(let ((guess (string->number text)))
(if (equal? #f guess)
(send chat_id
"This is not a number - please provide your guess in base 10.")
(cond ((= guess answer)
(begin (send chat_id
"Correct! Feel free to guess the next number.")
(print "User " chat_id " correctly guessed " answer)
(set! answer (random 100))))
((< guess answer)
(begin (send chat_id
"Too small. Try again.")
(print-failed-guess chat_id answer guess)))
((> guess answer)
(begin (send chat_id
"Too large. Try again.")
(print-failed-guess chat_id answer guess)))))))))
(define (handle-message m)
(let ((chat_id (resolve-query '(message from id) m))
(text (resolve-query '(message text) m)))
(if (hash-table-exists? conversations chat_id)
((hash-table-ref conversations chat_id) text)
(begin (hash-table-set! conversations chat_id (make-conversation chat_id))
(print "Started talking to user " chat_id)
(send chat_id
"Hi there! I just generated a random number for you to guess!")))))
(randomize)
(telebot:pollUpdates token
(lambda (u) (if (telebot:is-message? u)
(handle-message u))))
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