From 941835c331f16846da6c65f466728e2ed807ca4d Mon Sep 17 00:00:00 2001
From: Adrian Kummerlaender
Date: Sun, 13 Mar 2016 23:07:59 +0100
Subject: Add extension build and install instructions

---
 example/echo.scm | 31 +++++++++++++++++++++++++++++++
 1 file changed, 31 insertions(+)
 create mode 100644 example/echo.scm

(limited to 'example/echo.scm')

diff --git a/example/echo.scm b/example/echo.scm
new file mode 100644
index 0000000..7afd5ae
--- /dev/null
+++ b/example/echo.scm
@@ -0,0 +1,31 @@
+(require-extension telebot
+                   (prefix telebot telebot:))
+
+(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 (print-message msg)
+  (print (resolve-query '(message from first_name) msg)
+         ": "
+         (resolve-query '(message text) msg)
+         " ("
+         (resolve-query '(update_id) msg)
+         ")"))
+
+(define (echo-message msg)
+  (let ((chat_id    (resolve-query '(message from id) msg))
+        (text       (resolve-query '(message text)    msg)))
+    (telebot:sendMessage token
+                         chat_id: chat_id
+                         text:    text)))
+
+(telebot:pollUpdates token
+                     (lambda (u)
+                       (begin (print-message u)
+                              (echo-message  u))))
-- 
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