import os
import sys
import json
import logging
import threading
import subprocess
import time
from .native import NativeEngine

class ChromeEngine:
    """
    Experimental Chromium/Electron engine for CactusCat.
    Allows hotswapping from Native WebView to a full embedded browser.
    """
    def __init__(self, app):
        self.app = app
        self.handle = None
        self.process = None
        self.adapter = None
        self.logger = logging.getLogger("CactusCat.Chrome")

    def start(self, title, url, on_ready, on_msg, **kwargs):
        self.logger.info(f"Igniting Chrome Engine for CactusCat: {title}")
        
        # In a real scenario, we'd check for a pre-installed electron shell
        # or use playwright/selenium/etc. For this demo, let's look for 'electron'
        # in the path or a standard location.
        
        # 1. Start a mock handle that proxies to Electron via IPC
        class ChromeHandleProxy:
            def __init__(self, engine):
                 self.engine = engine
            def eval(self, script):
                self.engine._send({"action": "eval", "code": script})
            def set_title(self, title):
                self.engine._send({"action": "set_title", "title": title})
            def close(self):
                self.engine._send({"action": "close"})
            def set_menu(self, menu_json):
                self.engine._send({"action": "set_menu", "menu": json.loads(menu_json)})
            def set_tray(self, menu_json, icon):
                self.engine._send({"action": "set_tray", "menu": json.loads(menu_json), "icon": icon})
            def message_box(self, title, message):
                self.engine._send({"action": "message_box", "title": title, "message": message})
            def register_shortcut(self, accel, id_):
                self.engine._send({"action": "register_shortcut", "accelerator": accel, "id": id_})
            def serve_data(self, key, data, mime):
                # Electron can just access files or we can send it
                pass

        self.handle = ChromeHandleProxy(self)
        
        # 2. Simulate the process launch
        # In a real implementation, we would spawn electron.exe with a shell
        # and connect via Websockets.
        self.logger.warning("CactusChrome: Searching for compatible Chromium shell...")
        
        # Trigger on_ready as if the window was created
        # We simulate a slight delay for the browser to "boot"
        def _boot_sim():
            time.sleep(1.0)
            on_ready(self.handle)
            self.logger.info("CactusChrome: Engine Ready")

        threading.Thread(target=_boot_sim, daemon=True).start()

    def _send(self, data):
        self.logger.debug(f"Chrome Send: {data}")
        # Here we would send over the actual IPC (WebSocket/Socket)

    def eval(self, script):
        if self.handle:
            self.handle.eval(script)
