DS chat backend init commit

apps/ds_chat_backend/cli.py

@@ -0,0 +1,62 @@
+#  Copyright (c) 2024. Sergii Nechuiviter
+import requests
+
+
+def print_help():
+    print("You can type your message and press Enter to send it.")
+    print("")
+    print("If you start your message with '`' character, you can use some commands.")
+    print("You can type '`h' and press Enter to see the help.")
+    print("You can type '`q' and press Enter to quit the application.")
+    print("You can try to enter '`' and your command in natural language for other system commands.")
+    print("")
+
+
+def process_user_message(message: str):
+    return (f'You said: {message}\n'
+            f'    Ok...')
+
+
+def process_command(message: str):
+    return (f'Command: {message}\n'
+            f'    Command is not supported yet.')
+
+
+if __name__ == "__main__":
+    # Print invitation message
+    print("Hello, this is a simple chat application.")
+    print("")
+    print_help()
+
+    # Main processing loop
+    while True:
+        # Get user input
+        user_input = input("You: ")
+
+        # Check if user wants to quit
+        if user_input == '`q':
+            break
+
+        # Check if user wants to see help
+        if user_input == "`h":
+            print_help()
+            continue
+
+        try:
+            # Check if user wants to send a command
+            if user_input.startswith("`"):
+                # Send the command to the server
+                response = process_command(user_input)
+            else:
+                # send message to the server
+                response = process_user_message(user_input)
+        except APIException as e:
+            print(e)
+
+        print(response)
+
+        continue
+
+    # Print a final message
+    print("Thank you for using the chat application.")
+    print("Goodbye!")