"""
Runs scraper.py on a schedule inside the container.

HTTP trigger server on PORT (default 2323):
  GET  /        → health check / status
  POST /send    → trigger scraper immediately

Env vars:
  PHONE_NUMBER  – destination phone (required)
  TEXTBELT_KEY  – textbelt key (default: "textbelt" free tier)
  RUN_TIME      – HH:MM 24h time to fire daily (default: 07:00)
  RUN_DAYS      – comma-sep days: mon,tue,wed,thu,fri (default)
  PORT          – HTTP port (default: 2323)
"""
import logging
import os
import threading
import time
from http.server import BaseHTTPRequestHandler, HTTPServer

import schedule

from scraper import main as run_scraper  # now a plain sync function

logging.basicConfig(level=logging.INFO, format="%(asctime)s %(levelname)s %(message)s")
log = logging.getLogger(__name__)

RUN_TIME = os.environ.get("RUN_TIME", "07:00")
RUN_DAYS = [d.strip().lower() for d in os.environ.get("RUN_DAYS", "mon,tue,wed,thu,fri").split(",")]
PORT = int(os.environ.get("PORT", "2323"))

DAY_MAP = {
    "mon": schedule.every().monday,
    "tue": schedule.every().tuesday,
    "wed": schedule.every().wednesday,
    "thu": schedule.every().thursday,
    "fri": schedule.every().friday,
    "sat": schedule.every().saturday,
    "sun": schedule.every().sunday,
}

_last_run: str = "never"
_last_result: str = "n/a"


def job():
    global _last_run, _last_result
    log.info("Running scheduled lunch menu check...")
    try:
        run_scraper()
        _last_result = "ok"
    except SystemExit:
        _last_result = "sms_failed"
    except Exception as e:
        log.exception("Scraper failed")
        _last_result = f"error: {e}"
    _last_run = time.strftime("%Y-%m-%d %H:%M:%S")


class Handler(BaseHTTPRequestHandler):
    def log_message(self, fmt, *args):
        log.info("HTTP %s", fmt % args)

    def _respond(self, code: int, body: str):
        data = body.encode()
        self.send_response(code)
        self.send_header("Content-Type", "text/plain")
        self.send_header("Content-Length", str(len(data)))
        self.end_headers()
        self.wfile.write(data)

    def do_GET(self):
        if self.path == "/":
            status = (
                f"lunch-notifier running\n"
                f"schedule : {', '.join(RUN_DAYS)} at {RUN_TIME}\n"
                f"phone    : {os.environ.get('PHONE_NUMBER', 'NOT SET')}\n"
                f"last run : {_last_run}\n"
                f"last result: {_last_result}\n\n"
                f"POST /send to trigger immediately"
            )
            self._respond(200, status)
        else:
            self._respond(404, "not found")

    def do_POST(self):
        if self.path == "/send":
            log.info("Manual trigger via HTTP POST /send")
            threading.Thread(target=job, daemon=True).start()
            self._respond(200, "Triggered — check container logs for result.")
        else:
            self._respond(404, "not found")


def start_http_server():
    server = HTTPServer(("0.0.0.0", PORT), Handler)
    log.info(f"HTTP trigger server listening on port {PORT}")
    server.serve_forever()


# ── Schedule setup ────────────────────────────────────────────────────────────
for day in RUN_DAYS:
    if day in DAY_MAP:
        DAY_MAP[day].at(RUN_TIME).do(job)
        log.info(f"Scheduled: {day} at {RUN_TIME}")
    else:
        log.warning(f"Unknown day '{day}', skipping.")

log.info(f"Phone: {os.environ.get('PHONE_NUMBER', 'NOT SET')}")

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

while True:
    schedule.run_pending()
    time.sleep(30)