import asyncio
from functools import partial
from pathlib import Path
from urllib.parse import urljoin

import httpx
from playwright.async_api import BrowserContext, async_playwright

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

log = get_logger(__name__)

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

API_FILE = Cache(Path(__file__).parent / "caches" / "ppv_api.json", exp=28_800)

CACHE_FILE = Cache(Path(__file__).parent / "caches" / "ppv.json", exp=10_800)

MIRRORS = [
    "https://ppvs.su",
    "https://ppv.to",
    "https://ppv.wtf",
    "https://ppv.land",
    "https://freeppv.fun",
]


def get_tvg(sport: str, event: str) -> str:
    match sport:
        case "American Football":
            if leagues.is_valid(event, "NFL"):
                return "NFL.Dummy.us"

            else:
                return "NCAA.Sports.Dummy.us"

        case "Basketball":
            if leagues.is_valid(event, "NBA"):
                return "NBA.Basketball.Dummy.us"

            elif leagues.is_valid(event, "WNBA"):
                return "WNBA.dummy.us"

            # NCAA

            else:
                return "Basketball.Dummy.us"

        case "Ice Hockey":
            return "NHL.Hockey.Dummy.us"

        case _:
            return leagues.info(sport)[0]


async def refresh_api_cache(
    client: httpx.AsyncClient, url: str
) -> dict[str, dict[str, str]]:
    log.info("Refreshing API cache")

    try:
        r = await client.get(url)
        r.raise_for_status()
    except Exception as e:
        log.error(f'Failed to fetch "{url}"\n{e}')
        return {}

    return r.json()


async def process_event(
    url: str,
    url_num: int,
    context: BrowserContext,
) -> str | None:
    page = await context.new_page()

    captured: list[str] = []

    got_one = asyncio.Event()

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

    page.on("request", handler)

    try:
        await page.goto(
            url,
            wait_until="domcontentloaded",
            timeout=15_000,
        )

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

        try:
            await asyncio.wait_for(wait_task, timeout=10)
        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[-1]

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

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

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


async def get_events(
    client: httpx.AsyncClient,
    base_url: str,
    cached_keys: set[str],
) -> list[dict[str, str]]:
    if not (api_data := API_FILE.load(per_entry=False)):
        api_data = await refresh_api_cache(
            client,
            urljoin(
                base_url,
                "api/streams",
            ),
        )

        API_FILE.write(api_data)

    events: list[dict[str, str]] = []

    now = Time.clean(Time.now())
    start_dt = now.delta(minutes=-30)
    end_dt = now.delta(minutes=30)

    for stream_group in api_data["streams"]:
        sport = stream_group["category"]

        if sport == "24/7 Streams":
            continue

        for event in stream_group["streams"]:
            name, start_ts, logo, iframe = (
                event["name"],
                event["starts_at"],
                event["poster"],
                event["iframe"],
            )

            key = f"[{sport}] {name} (PPV)"

            if cached_keys & {key}:
                continue

            event_dt = Time.from_ts(start_ts)

            if not start_dt <= event_dt <= end_dt:
                continue

            events.append(
                {
                    "sport": sport,
                    "event": name,
                    "link": iframe,
                    "logo": logo,
                    "timestamp": event_dt.timestamp(),
                }
            )

    return events


async def scrape(client: httpx.AsyncClient) -> None:
    cached_urls = CACHE_FILE.load()
    cached_count = len(cached_urls)
    urls.update(cached_urls)

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

    if not (base_url := await network.get_base(MIRRORS)):
        log.warning("No working PPV mirrors")
        CACHE_FILE.write(cached_urls)
        return

    log.info(f'Scraping from "{base_url}"')

    events = await get_events(
        client,
        base_url,
        set(cached_urls.keys()),
    )

    log.info(f"Processing {len(events)} new URL(s)")

    async with async_playwright() as p:
        browser, context = await network.browser(p)

        for i, ev in enumerate(events, start=1):
            url = await network.safe_process(
                lambda: process_event(
                    ev["link"],
                    url_num=i,
                    context=context,
                ),
                url_num=i,
                log=log,
            )

            if url:
                sport, event, logo, ts = (
                    ev["sport"],
                    ev["event"],
                    ev["logo"],
                    ev["timestamp"],
                )

                key = f"[{sport}] {event} (PPV)"

                entry = {
                    "url": url,
                    "logo": logo,
                    "base": base_url,
                    "timestamp": ts,
                    "id": get_tvg(sport, event) or "Live.Event.us",
                }

                urls[key] = cached_urls[key] = entry

        await browser.close()

    if new_count := len(cached_urls) - cached_count:
        log.info(f"Collected and cached {new_count} new event(s)")
    else:
        log.info("No new events found")

    CACHE_FILE.write(cached_urls)


# same provider as strmd.py