#!/usr/bin/env python3
"""
Reads CAVA ASCII output from stdin and streams it to the wallpaper
via Server-Sent Events on http://127.0.0.1:5555.
Run as: cava -p cava.conf | python3 cava-server.py
"""
import sys
import threading
import time
from http.server import HTTPServer, BaseHTTPRequestHandler

latest = ""
lock   = threading.Lock()

class Handler(BaseHTTPRequestHandler):
    def do_GET(self):
        self.send_response(200)
        self.send_header("Content-Type",  "text/event-stream")
        self.send_header("Cache-Control", "no-cache")
        self.send_header("Access-Control-Allow-Origin", "*")
        self.end_headers()
        last = None
        try:
            while True:
                with lock:
                    cur = latest
                if cur and cur != last:
                    self.wfile.write(f"data: {cur}\n\n".encode())
                    self.wfile.flush()
                    last = cur
                time.sleep(0.016)   # cap at ~60fps
        except Exception:
            pass

    def log_message(self, *args):
        pass

def serve():
    HTTPServer(("127.0.0.1", 5555), Handler).serve_forever()

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

for line in sys.stdin:
    with lock:
        latest = line.strip()