from flask import Flask, jsonify
import threading
import time
import requests
from datetime import datetime
import logging

# Setup logging
logging.basicConfig(
    level=logging.INFO,
    format='%(asctime)s - %(levelname)s - %(message)s'
)
logger = logging.getLogger(__name__)

app = Flask(__name__)

# ============ CONFIG ============
NUM_SERVERS = 55  # serverclass1 to serverclass55
PING_INTERVAL = 21600  # seconds (5 minutes) - like cron-job.org
REQUEST_TIMEOUT = 30


# Extra fixed URLs
EXTRA_URLS = [
    "https://dooratre-backup.hf.space/health",
    "https://dooratre-reload-bot.hf.space/health",
    "https://corvo-ai-cron.hf.space/health",
]


def build_urls():
    urls = []
    urls.extend(EXTRA_URLS)
    return urls


ALL_URLS = build_urls()

# ============ STATE ============
state = {
    "running": False,
    "thread": None,
    "lock": threading.Lock(),
    "stop_event": threading.Event(),
    "last_cycle_start": None,
    "last_cycle_end": None,
    "cycles_completed": 0,
    "total_pings": 0,
    "success_count": 0,
    "fail_count": 0,
    "last_results": {},
}


def ping_url(url):
    try:
        r = requests.get(url, timeout=REQUEST_TIMEOUT)
        ok = r.status_code == 200
        return ok, r.status_code, None
    except Exception as e:
        return False, None, str(e)


def cron_worker(stop_event: threading.Event):
    logger.info(f"Cron worker started. Total URLs: {len(ALL_URLS)}")
    while not stop_event.is_set():
        cycle_start = datetime.utcnow().isoformat()
        state["last_cycle_start"] = cycle_start
        logger.info(f"=== Cycle started at {cycle_start} ===")

        for url in ALL_URLS:
            if stop_event.is_set():
                logger.info("Stop event received, breaking cycle.")
                break
            ok, status, err = ping_url(url)
            state["total_pings"] += 1
            if ok:
                state["success_count"] += 1
                logger.info(f"[OK {status}] {url}")
            else:
                state["fail_count"] += 1
                logger.warning(f"[FAIL {status}] {url} | err={err}")
            state["last_results"][url] = {
                "ok": ok,
                "status": status,
                "error": err,
                "time": datetime.utcnow().isoformat(),
            }

        state["cycles_completed"] += 1
        state["last_cycle_end"] = datetime.utcnow().isoformat()
        logger.info(f"=== Cycle done. Sleeping {PING_INTERVAL}s ===")

        # Sleep but be responsive to stop_event
        stop_event.wait(PING_INTERVAL)

    logger.info("Cron worker stopped.")


@app.route("/")
def index():
    return jsonify({
        "service": "Cron-like pinger",
        "running": state["running"],
        "total_urls": len(ALL_URLS),
        "endpoints": ["/start", "/end", "/status", "/urls"],
    })


@app.route("/start", methods=["GET", "POST"])
def start():
    with state["lock"]:
        if state["running"]:
            return jsonify({"status": "already_running"}), 200

        state["stop_event"] = threading.Event()
        t = threading.Thread(target=cron_worker, args=(state["stop_event"],), daemon=True)
        state["thread"] = t
        state["running"] = True
        t.start()
        logger.info("Cron started via /start")
        return jsonify({
            "status": "started",
            "total_urls": len(ALL_URLS),
            "interval_seconds": PING_INTERVAL,
        })


@app.route("/end", methods=["GET", "POST"])
def end():
    with state["lock"]:
        if not state["running"]:
            return jsonify({"status": "not_running"}), 200

        state["stop_event"].set()
        state["running"] = False
        logger.info("Cron stop requested via /end")
        return jsonify({"status": "stopping"})


@app.route("/status")
def status():
    return jsonify({
        "running": state["running"],
        "total_urls": len(ALL_URLS),
        "cycles_completed": state["cycles_completed"],
        "total_pings": state["total_pings"],
        "success_count": state["success_count"],
        "fail_count": state["fail_count"],
        "last_cycle_start": state["last_cycle_start"],
        "last_cycle_end": state["last_cycle_end"],
        "interval_seconds": PING_INTERVAL,
    })


@app.route("/urls")
def urls():
    return jsonify({"count": len(ALL_URLS), "urls": ALL_URLS})


@app.route("/results")
def results():
    return jsonify(state["last_results"])


@app.route("/health")
def health():
    return jsonify({"status": "ok"})


if __name__ == "__main__":
    # Auto-start cron on boot (optional - comment out if you only want manual /start)
    # Uncomment below if you want it to auto-run:
    # state["stop_event"] = threading.Event()
    # t = threading.Thread(target=cron_worker, args=(state["stop_event"],), daemon=True)
    # state["thread"] = t
    # state["running"] = True
    # t.start()

    app.run(host="0.0.0.0", port=7860, debug=False, threaded=True)