import asyncio
import re
from functools import partial

import feedparser
from playwright.async_api import Browser, Page, TimeoutError

from .utils import Cache, Time, get_logger, leagues, network

log = get_logger(__name__)

urls: dict[str, dict[str, str | float]] = {}

TAG = "LIVETVSX"

CACHE_FILE = Cache(TAG, exp=10_800)

XML_CACHE = Cache(f"{TAG}-xml", exp=28_000)

BASE_URL = "https://cdn.livetv873.me/rss/upcoming_en.xml"

VALID_SPORTS = [
    "MLB. Preseason",
    "MLB",
    "Basketball",
    "Football",
    "Ice Hockey",
    "Wrestling",
]


def fix_url(s: str) -> str | None:
    pattern = re.compile(r"eventinfo\/(\d*)", re.I)

    if not (match := pattern.search(s)):
        return

    elif not (event_id := match[1]).isalnum():
        return

    return f"https://cdn.livetv872.me/cache/links/en.{event_id}.html"


async def process_event(
    url: str,
    url_num: int,
    page: Page,
) -> str | None:

    captured: list[str] = []

    got_one = asyncio.Event()

    handler = partial(
        network.capture_req,
        captured=captured,
        got_one=got_one,
    )

    page.on("request", handler)

    try:
        resp = await page.goto(
            url,
            wait_until="domcontentloaded",
            timeout=10_000,
        )

        if not resp or resp.status != 200:
            log.warning(
                f"URL {url_num}) Status Code: {resp.status if resp else 'None'}"
            )
            return

        try:
            event_a = page.locator('a[title*="Aliez"]').first

            href = await event_a.get_attribute("href", timeout=1_250)
        except TimeoutError:
            log.warning(f"URL {url_num}) No valid sources found.")
            return

        event_url = href if href.startswith("http") else f"https:{href}"

        await page.goto(
            event_url,
            wait_until="domcontentloaded",
            timeout=5_000,
        )

        wait_task = asyncio.create_task(got_one.wait())

        try:
            await asyncio.wait_for(wait_task, timeout=6)
        except asyncio.TimeoutError:
            log.warning(f"URL {url_num}) Timed out waiting for M3U8.")
            return

        finally:
            if not wait_task.done():
                wait_task.cancel()

                try:
                    await wait_task
                except asyncio.CancelledError:
                    pass

        if captured:
            log.info(f"URL {url_num}) Captured M3U8")
            return captured[0]

        log.warning(f"URL {url_num}) No M3U8 captured after waiting.")
        return

    except Exception as e:
        log.warning(f"URL {url_num}) {e}")
        return

    finally:
        page.remove_listener("request", handler)


async def refresh_xml_cache(now_ts: float) -> dict[str, dict[str, str | float]]:
    log.info("Refreshing XML cache")

    events = {}

    if not (xml_data := await network.request(BASE_URL, log=log)):
        return events

    feed = feedparser.parse(xml_data.content)

    for entry in feed.entries:
        if not (date := entry.get("published")):
            continue

        if (not (link := entry.get("link"))) or (not (fixed_link := fix_url(link))):
            continue

        if not (title := entry.get("title")):
            continue

        if not (sport_sum := entry.get("summary")):
            continue

        sprt = sport_sum.split(".", 1)

        sport, league = sprt[0], "".join(sprt[1:]).strip()

        event_dt = Time.from_str(date)

        key = f"[{sport} - {league}] {title} ({TAG})"

        events[key] = {
            "sport": sport,
            "league": league,
            "event": title,
            "link": fixed_link,
            "event_ts": event_dt.timestamp(),
            "timestamp": now_ts,
        }

    return events


async def get_events(cached_keys: list[str]) -> list[dict[str, str]]:
    now = Time.clean(Time.now())

    if not (events := XML_CACHE.load()):
        events = await refresh_xml_cache(now.timestamp())

        XML_CACHE.write(events)

    start_ts = now.delta(hours=-1).timestamp()
    end_ts = now.delta(minutes=5).timestamp()

    live = []

    for k, v in events.items():
        if k in cached_keys:
            continue

        if (
            v["sport"] not in VALID_SPORTS
            and v["league"] not in VALID_SPORTS
            and v["event"].lower() != "olympic games"
        ):
            continue

        if not start_ts <= v["event_ts"] <= end_ts:
            continue

        live.append(v)

    return live


async def scrape(browser: Browser) -> None:
    cached_urls = CACHE_FILE.load()

    valid_urls = {k: v for k, v in cached_urls.items() if v["url"]}

    valid_count = cached_count = len(valid_urls)

    urls.update(valid_urls)

    log.info(f"Loaded {cached_count} event(s) from cache")

    log.info('Scraping from "https://livetv.sx/enx/"')

    if events := await get_events(cached_urls.keys()):
        log.info(f"Processing {len(events)} new URL(s)")

        async with network.event_context(browser, ignore_https=True) as context:
            for i, ev in enumerate(events, start=1):
                async with network.event_page(context) as page:
                    handler = partial(
                        process_event,
                        url=(link := ev["link"]),
                        url_num=i,
                        page=page,
                    )

                    url = await network.safe_process(
                        handler,
                        url_num=i,
                        semaphore=network.PW_S,
                        log=log,
                        timeout=20,
                    )

                    sport, league, event, ts = (
                        ev["sport"],
                        ev["league"],
                        ev["event"],
                        ev["event_ts"],
                    )

                    key = f"[{sport} - {league}] {event} ({TAG})"

                    tvg_id, logo = leagues.get_tvg_info(sport, event)

                    entry = {
                        "url": url,
                        "logo": logo,
                        "base": "https://livetv.sx/enx/",
                        "timestamp": ts,
                        "id": tvg_id or "Live.Event.us",
                        "link": link,
                    }

                    cached_urls[key] = entry

                    if url:
                        valid_count += 1

                        urls[key] = entry

        log.info(f"Collected and cached {valid_count - cached_count} new event(s)")

    else:
        log.info("No new events found")

    CACHE_FILE.write(cached_urls)