#!/usr/bin/env python3
"""
Human-friendly MCP test client.

Usage: mcp-test.py ShowCommands
       mcp-test.py ListBlueprintAssets filter=lx
       mcp-test.py ShowCommands verbose=true
"""

import sys
import json
import socket

HOST = "localhost"
PORT = 9847
TIMEOUT = 120

# Map ASCII characters to the Unicode geometric delimiters used by the plugin.
DELIMITER_MAP = str.maketrans({
    '<': '◂',
    '>': '▸',
    '*': '◆',
    '.': '◦',
    '|': '│',
})

def main():
    args = sys.argv[1:]
    if not args:
        print("Usage: mcp-test.py ShowCommands [key=value ...]")
        sys.exit(1)

    msg = {"command": args[0]}
    for arg in args[1:]:
        key, _, value = arg.partition("=")
        if value.lower() == "true":
            value = True
        elif value.lower() == "false":
            value = False
        else:
            try:
                value = int(value)
            except ValueError:
                pass
        msg[key] = value

    # Translate ASCII delimiter shortcuts to Unicode geometric shapes.
    for key, value in msg.items():
        if isinstance(value, str):
            msg[key] = value.translate(DELIMITER_MAP)

    sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    sock.settimeout(TIMEOUT)
    try:
        sock.connect((HOST, PORT))
    except (ConnectionRefusedError, socket.timeout, OSError) as e:
        print(f"Cannot connect to {HOST}:{PORT} — is the editor running?")
        sys.exit(1)

    sock.sendall((json.dumps(msg) + "\n").encode())

    result = b""
    while True:
        chunk = sock.recv(65536)
        if not chunk:
            break
        result += chunk
        if b"\0" in result:
            break

    sock.close()
    result = result[:result.index(b"\0")].decode() if b"\0" in result else result.decode()

    try:
        parsed = json.loads(result)
        print(json.dumps(parsed, indent=2))
    except json.JSONDecodeError:
        print(result)

if __name__ == "__main__":
    main()