"""
modules/clipboard_sync.py — FRIDAY Cross-Device Clipboard Sync
Syncs clipboard between PC and Phone via WebSocket.
"""

import os
import json
import threading
import time

from config import DATA_DIR

CLIPBOARD_FILE = os.path.join(DATA_DIR, "clipboard_sync.json")
WS_PORT = 5051  # Separate port for clipboard


def _load() -> dict:
    """Load clipboard history."""
    if not os.path.exists(CLIPBOARD_FILE):
        return {"history": [], "last": ""}
    try:
        with open(CLIPBOARD_FILE, "r", encoding="utf-8") as f:
            return json.load(f)
    except Exception:
        return {"history": [], "last": ""}


def _save(data: dict) -> None:
    """Save clipboard history."""
    try:
        os.makedirs(DATA_DIR, exist_ok=True)
        with open(CLIPBOARD_FILE, "w", encoding="utf-8") as f:
            json.dump(data, f)
    except Exception:
        pass


def set_clipboard(text: str, source: str = "pc") -> None:
    """
    Set clipboard and sync.

    Args:
        text: Clipboard text
        source: Source device ('pc' or 'phone')
    """
    if not text:
        return

    data = _load()
    data["last"] = text
    data["source"] = source
    data["time"] = time.time()

    # Add to history (keep last 20)
    history = data.get("history", [])
    if text not in history:
        history.append(text)
        history = history[-20:]
    data["history"] = history

    _save(data)

    # Broadcast to phone
    try:
        _broadcast_to_phone(text, source)
    except Exception:
        pass

    # Set local clipboard
    if source != "pc":
        _set_local_clipboard(text)


def _set_local_clipboard(text: str) -> None:
    """Set local Windows clipboard."""
    try:
        import subprocess
        cmd = f'powershell -command "Set-Clipboard -Value \\"{text}\\"'
        subprocess.run(cmd, shell=True, capture_output=True)
    except Exception:
        pass


def get_clipboard() -> str | None:
    """Get current clipboard."""
    data = _load()
    return data.get("last", "")


def get_history() -> list[str]:
    """Get clipboard history."""
    data = _load()
    return data.get("history", [])


# === WebSocket Sync ===

def _broadcast_to_phone(text: str, source: str) -> None:
    """Broadcast clipboard change to phone."""
    try:
        import websocket

        ws = websocket.WebSocket()
        ws.connect("ws://localhost:5051", timeout=1)
        ws.send(json.dumps({"type": "clipboard", "text": text, "source": source}))
        ws.close()
    except Exception:
        pass


def _ws_server():
    """WebSocket server for receiving phone clipboard."""
    try:
        import websocket
        from websocket import WebSocketServer

        def on_message(ws, message):
            try:
                data = json.loads(message)
                if data.get("type") == "clipboard":
                    text = data.get("text", "")
                    if text:
                        set_clipboard(text, "phone")
                        _set_local_clipboard(text)
            except Exception:
                pass

        server = WebSocketServer(host="localhost", port=5051)
        server.on_message = on_message
        print("[clipboard_sync] WS server started on port 5051")
        server.serve_forever()
    except Exception as e:
        print(f"[clipboard_sync] Server error: {e}")


def start_sync_server():
    """Start clipboard sync server."""
    thread = threading.Thread(target=_ws_server, daemon=True)
    thread.start()


# === Phone API ===

def phone_set_clipboard(text: str) -> dict:
    """API for phone to set clipboard."""
    set_clipboard(text, "phone")
    return {"ok": True}


def phone_get_clipboard() -> dict:
    """API for phone to get clipboard."""
    return {"ok": True, "clipboard": get_clipboard(), "history": get_history()}


# === Voice Commands ===

def handle_command(command: str, speak) -> bool:
    """Handle clipboard voice commands."""
    c = command.lower()

    if "copy" in c:
        # Get text from clipboard
        text = get_clipboard()
        if text:
            speak(f"Copied: {text[:100]}")
            return True

    if "clipboard" in c:
        text = get_clipboard()
        if text:
            speak(f"Clipboard: {text[:100]}")
        else:
            speak("Clipboard is empty.")
        return True

    if "sync clipboard" in c or "clipboard sync" in c:
        speak("Clipboard synced with phone.")
        return True

    return False