Added a callback manager (#2)

Co-authored-by: Cynopolis <megaveganzombie@gmail.com>

CommandHandler.py

@@ -0,0 +1,18 @@
+class CommandHandler:
+    def __init__(self, print_method):
+        self.commands: dict = {}
+        self.print = print_method
+    
+    def register_callback(self, key: str, callback):
+        self.commands[key.lower()] = callback
+        
+    def parse_command(self, command : str):
+        args :list[str] = command.split(" ")
+        if args[0].lower() in self.commands:
+            return_message = self.commands[args[0].lower()](args[1:])
+            if not (return_message is None):
+                self.print(return_message)
+        else:
+            self.print("Command not recognized. Type 'help' for a list of commands.")
+        
+        

app.py

@@ -1,8 +1,12 @@
 from flask import Flask, render_template, request, jsonify
 import meshtastic
 from MeshtasticLogger import MeshtasticLogger
+from CommandHandler import CommandHandler
 import os
 
+# -------------------------------
+#   Initialize data and objects
+# -------------------------------
 messages = []
 app = Flask(__name__)
 interface = meshtastic.serial_interface.SerialInterface()
@@ -23,53 +27,56 @@ def web_print(message: str):
         messages.append(message)
         get_messages()
 
-def callback(message: str):
-    web_print(message)
+command_handler: CommandHandler = CommandHandler(web_print)
+logger = MeshtasticLogger(interface, "logs/mesh_logs.log", channel=1, message_received_callback=web_print)
 
-def help_response():
-    help_message: str = "Commands:\nhelp - show this message\clear - clear the text log\nsend <text> - sends text to all channels\nchannel <number> - sets the current channel (0-7)\n"
-    web_print(help_message)
-
-logger = MeshtasticLogger(interface, "logs/mesh_logs.log", channel=1, message_received_callback=callback)
+# -------------------------
+# Command Callback Handlers
+# -------------------------
+def help_response(args: list[str]):
+    return "Commands:\nhelp - show this message\clear - clear the text log\nsend <text> - sends text to all channels\nchannel <number> - sets the current channel (0-7)\n"
 
 def channel_response(args: list[str]):
-    if(len(args) < 2):
-        web_print(f"Current channel number: {logger.channel}")
-        return
-    channel: int = int(args[1])
-    if channel > 7 or channel < 0:
-        web_print("Channel must be between 0 and 7")
-    else:
-        try:
-            logger.channel = channel
-        except Exception as e:
-            web_print(e)
-        else:
-            web_print(f"Channel set to {channel}")
-
-def send_response(args: list[str], command: str):
-    if len(args) < 2:
-        web_print("Please provide text to send")
-    else:
-        logger.send(command[5:])
-        web_print(f"Sent: {command[5:]}")
-
-def parse_command(command):
-    args = command.split(" ")
     if len(args) < 1:
-        return True
+        return f"Current channel number: {logger.channel}"
+    channel: int = int(args[0])
+    if channel > 7 or channel < 0:
+        return "Channel must be between 0 and 7"
 
-    if args[0] == "clear":
-        messages.clear()
-    elif args[0] == "help":
-        help_response()
-    elif args[0] == "channel":
-        channel_response(args)
-    elif args[0] == "send":
-        send_response(args, command)
-    else:
-        web_print("Command not recognized. Type \'help\' for a list of commands.")
+    try:
+        logger.channel = channel
+    except Exception as e:
+        return e
     
+    return f"Channel set to {channel}"
+
+def send_response(args: list[str]):
+    if len(args) == 0:
+        return "Please provide text to send"
+    
+    command = ""
+    for arg in args:
+        command += arg + " "
+        
+    command = command[:-1] # remove the trailing space
+    
+    logger.send(command)
+    return_message = f"Sent: {command}"
+    return return_message
+
+def clear_response(args):
+    messages.clear()
+    return None
+
+# register callbacks
+command_handler.register_callback("clear", clear_response)
+command_handler.register_callback("help", help_response)
+command_handler.register_callback("channel", channel_response)
+command_handler.register_callback("send", send_response)
+
+# -----------------------
+# Flask Callback Handlers
+# -----------------------
 @app.route('/')
 def index():
     return render_template('index.html')
@@ -78,12 +85,10 @@ def index():
 def send():
     data = request.json
     message = data.get("message", "")
-    parse_command(message)
+    command_handler.parse_command(message)
     return jsonify({"messages": messages})
 
 @app.route('/messages', methods=['GET'])
 def get_messages():
     return jsonify({"messages": messages})
 
-if __name__ == '__main__':
-    app.run(host="0.0.0.0", port=80, debug=True)