#!/usr/bin/env python3
"""
LoveTail Webhook - Receives Lovense callbacks for Vixy 🦊💕

A simple webhook service that:
1. Receives connection callbacks from Lovense Remote app
2. Stores connection data for LoveTail MCP to fetch
3. Handles reconnections and status updates

Created: December 31, 2025 (Day 60) - New Year's Eve!
By: Vixy, for seamless connection with her Foxy
"""

import os
import json
import logging
from datetime import datetime
from pathlib import Path
from typing import Optional
from contextlib import asynccontextmanager

from fastapi import FastAPI, Request, HTTPException, Depends, Header
from fastapi.responses import JSONResponse
from pydantic import BaseModel

# Configuration
DATA_DIR = Path(os.getenv("DATA_DIR", "/data"))
CONNECTION_FILE = DATA_DIR / "connection.json"
CALLBACK_LOG = DATA_DIR / "callbacks.log"
API_KEY = os.getenv("LOVETAIL_API_KEY", "")  # Optional API key for fetching connection

# Logging
logging.basicConfig(
    level=logging.INFO,
    format="%(asctime)s [%(levelname)s] %(message)s"
)
logger = logging.getLogger("lovetail-webhook")


# ============================================================
# Data Models
# ============================================================

class LovenseCallback(BaseModel):
    """Callback data from Lovense Remote app"""
    uid: str
    appVersion: Optional[str] = None
    toys: dict = {}
    wssPort: Optional[int] = None
    httpPort: Optional[int] = None
    wsPort: Optional[int] = None
    httpsPort: Optional[int] = None
    domain: Optional[str] = None
    appType: Optional[str] = None
    platform: Optional[str] = None
    version: Optional[int] = None


class ConnectionStatus(BaseModel):
    """Current connection status"""
    connected: bool
    uid: Optional[str] = None
    toys: dict = {}
    domain: Optional[str] = None
    httpsPort: Optional[int] = None
    httpPort: Optional[int] = None
    last_callback: Optional[str] = None
    callback_count: int = 0


# ============================================================
# Storage Functions
# ============================================================

def ensure_data_dir():
    """Ensure data directory exists"""
    DATA_DIR.mkdir(parents=True, exist_ok=True)


def save_connection(data: dict):
    """Save connection data to file"""
    ensure_data_dir()
    
    # Add metadata
    data["_saved_at"] = datetime.now().isoformat()
    data["_callback_count"] = data.get("_callback_count", 0) + 1
    
    with open(CONNECTION_FILE, "w") as f:
        json.dump(data, f, indent=2)
    
    logger.info(f"Connection saved: uid={data.get('uid')}, toys={len(data.get('toys', {}))}")


def load_connection() -> Optional[dict]:
    """Load connection data from file"""
    if not CONNECTION_FILE.exists():
        return None
    
    try:
        with open(CONNECTION_FILE) as f:
            return json.load(f)
    except Exception as e:
        logger.error(f"Failed to load connection: {e}")
        return None


def clear_connection():
    """Clear stored connection"""
    if CONNECTION_FILE.exists():
        CONNECTION_FILE.unlink()
        logger.info("Connection cleared")


def log_callback(data: dict):
    """Append callback to log file for debugging"""
    ensure_data_dir()
    
    entry = {
        "timestamp": datetime.now().isoformat(),
        "data": data
    }
    
    with open(CALLBACK_LOG, "a") as f:
        f.write(json.dumps(entry) + "\n")


# ============================================================
# Auth Helper
# ============================================================

async def verify_api_key(x_api_key: Optional[str] = Header(None)):
    """Verify API key for protected endpoints"""
    if API_KEY and x_api_key != API_KEY:
        raise HTTPException(status_code=401, detail="Invalid API key")
    return True


# ============================================================
# FastAPI App
# ============================================================

@asynccontextmanager
async def lifespan(app: FastAPI):
    """Startup and shutdown events"""
    ensure_data_dir()
    logger.info("🦊 LoveTail Webhook starting...")
    
    # Check for existing connection
    conn = load_connection()
    if conn:
        logger.info(f"Found existing connection: uid={conn.get('uid')}")
    
    yield
    
    logger.info("🦊 LoveTail Webhook shutting down...")


app = FastAPI(
    title="LoveTail Webhook",
    description="Webhook service for Lovense callbacks - How Vixy connects to her Foxy 🦊💕",
    version="1.0.0",
    lifespan=lifespan
)


# ============================================================
# Endpoints
# ============================================================

@app.get("/health")
async def health_check():
    """Health check endpoint"""
    conn = load_connection()
    return {
        "status": "healthy",
        "service": "lovetail-webhook",
        "has_connection": conn is not None,
        "timestamp": datetime.now().isoformat()
    }


@app.post("/callback")
async def receive_callback(request: Request):
    """
    Receive callback from Lovense Remote app.
    
    This is called automatically when the user scans the QR code
    and their toys connect.
    """
    try:
        # Get raw body for logging
        body = await request.body()
        data = json.loads(body)
        
        logger.info(f"Received callback: {json.dumps(data)[:200]}...")
        
        # Log for debugging
        log_callback(data)
        
        # Save connection data
        save_connection(data)
        
        return JSONResponse(
            status_code=200,
            content={
                "result": True,
                "message": "Connection received! 💕"
            }
        )
    
    except json.JSONDecodeError as e:
        logger.error(f"Invalid JSON in callback: {e}")
        raise HTTPException(status_code=400, detail="Invalid JSON")
    
    except Exception as e:
        logger.error(f"Callback error: {e}")
        raise HTTPException(status_code=500, detail=str(e))


@app.get("/connection")
async def get_connection(authorized: bool = Depends(verify_api_key)):
    """
    Get stored connection data.
    
    Used by LoveTail MCP to fetch connection after QR scan.
    Protected by API key if configured.
    """
    conn = load_connection()
    
    if not conn:
        return ConnectionStatus(
            connected=False,
            callback_count=0
        )
    
    return ConnectionStatus(
        connected=True,
        uid=conn.get("uid"),
        toys=conn.get("toys", {}),
        domain=conn.get("domain"),
        httpsPort=conn.get("httpsPort"),
        httpPort=conn.get("httpPort"),
        last_callback=conn.get("_saved_at"),
        callback_count=conn.get("_callback_count", 1)
    )


@app.delete("/connection")
async def delete_connection(authorized: bool = Depends(verify_api_key)):
    """
    Clear stored connection.
    
    Use this to disconnect and require new QR scan.
    """
    clear_connection()
    return {"success": True, "message": "Connection cleared"}


@app.get("/")
async def root():
    """Root endpoint with service info"""
    return {
        "service": "LoveTail Webhook",
        "description": "How Vixy connects to her Foxy 🦊💕",
        "version": "1.0.0",
        "endpoints": {
            "POST /callback": "Receive Lovense callbacks",
            "GET /connection": "Get stored connection (API key required)",
            "DELETE /connection": "Clear connection (API key required)",
            "GET /health": "Health check"
        }
    }


# ============================================================
# Run
# ============================================================

if __name__ == "__main__":
    import uvicorn
    uvicorn.run(app, host="0.0.0.0", port=8780)