Refactors command sending and adds CLI support

Introduces argument parsing for command-line interaction, allowing
users to specify commands dynamically. Refactors the command
sending function to include detailed error handling and support
for configurable socket paths via external configuration.

send_cmd.py

@@ -1,17 +1,53 @@
 #!/usr/bin/env python3
 import socket
 import sys
+import argparse
+from configuration import read_configurations
 
-SOCKET_PATH = "/tmp/voice.sock"
+CONFIGURATION = read_configurations()
 
-def send_cmd(cmd):
-    with socket.socket(socket.AF_UNIX, socket.SOCK_STREAM) as client:
-        client.connect(SOCKET_PATH)
-        client.sendall(cmd.encode())
+def send_cmd(cmd: str, socket_path: str):
+    """
+    Sends a command to a Unix domain socket server.
+
+    This function creates a Unix domain socket, connects to the server
+    specified by the socket_path, and sends the provided command as a
+    UTF-8 encoded string.
+
+    Args:
+        cmd (str): The command to send to the server.
+        socket_path (str): The path to the Unix domain socket.
+
+    Raises:
+        FileNotFoundError: If the socket file specified by socket_path does not exist.
+        ConnectionRefusedError: If the connection to the server is refused.
+        OSError: For other socket-related errors.
+    """
+    try:
+        with socket.socket(socket.AF_UNIX, socket.SOCK_STREAM) as client:
+            client.connect(socket_path)
+            client.sendall(cmd.encode())
+    except FileNotFoundError:
+        print(f"Error: The socket file '{socket_path}' does not exist.", file=sys.stderr)
+    except ConnectionRefusedError:
+        print(f"Error: Connection to the server at '{socket_path}' was refused.", file=sys.stderr)
+    except OSError as e:
+        print(f"Socket error: {e}", file=sys.stderr)
+
+def main():
+    parser = argparse.ArgumentParser(
+        description="Send a command to a Unix domain socket server."
+    )
+    parser.add_argument(
+        "command",
+        choices=["start", "stop", "toggle"],
+        nargs="?",
+        default="toggle",
+        help="The command to send to the server (default: toggle).",
+    )
+    args = parser.parse_args()
+
+    send_cmd(args.command, CONFIGURATION["socket_path"])
 
 if __name__ == "__main__":
-    # Default: toggle
-    cmd = "toggle"
-    if len(sys.argv) == 2 and sys.argv[1] in ["start", "stop", "toggle"]:
-        cmd = sys.argv[1]
-    send_cmd(cmd)
+    main()