import asyncio
from functools import partial
from itertools import chain
from typing import Any
from urllib.parse import urljoin

import httpx
from playwright.async_api import async_playwright

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

log = get_logger(__name__)

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

CACHE_FILE = Cache("streamsgate.json", exp=10_800)

API_FILE = Cache("streamsgate-api.json", exp=28_800)

BASE_URL = "https://streamingon.org"

SPORT_ENDPOINTS = [
    "soccer",
    "nfl",
    "nba",
    "cfb",
    "mlb",
    "nhl",
    "ufc",
    "boxing",
    "f1",
]

TAG = "STRMSG8"


def get_event(t1: str, t2: str) -> str:
    match t1:
        case "RED ZONE":
            return "Red Zone"

        case "TBD":
            return "TBD"

        case _:
            return f"{t1.strip()} vs {t2.strip()}"


async def get_api_data(client: httpx.AsyncClient, url: str) -> list[dict[str, Any]]:
    try:
        r = await client.get(url)
        r.raise_for_status()
    except Exception as e:
        log.error(f'Failed to fetch "{url}": {e}')

        return []

    return r.json()


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

    tasks = [
        get_api_data(client, urljoin(BASE_URL, f"data/{sport}.json"))
        for sport in SPORT_ENDPOINTS
    ]

    results = await asyncio.gather(*tasks)

    data = list(chain(*results))

    for ev in data:
        ev["ts"] = ev.pop("timestamp")

    data[-1]["timestamp"] = Time.now().timestamp()

    return data


async def get_events(
    client: httpx.AsyncClient, cached_keys: set[str]
) -> list[dict[str, str]]:
    if not (api_data := API_FILE.load(per_entry=False, index=-1)):
        api_data = await refresh_api_cache(client)

        API_FILE.write(api_data)

    events = []

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

    for stream_group in api_data:
        event_ts = stream_group.get("ts")

        sport = stream_group.get("league")

        t1, t2 = stream_group.get("away"), stream_group.get("home")

        if not (event_ts and sport):
            continue

        event_dt = Time.from_ts(event_ts)

        if not start_dt <= event_dt <= end_dt:
            continue

        event = get_event(t1, t2)

        if not (streams := stream_group.get("streams")):
            continue

        if not (url := streams[0].get("url")):
            continue

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

        if cached_keys & {key}:
            continue

        events.append(
            {
                "sport": sport,
                "event": event,
                "link": url,
                "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")

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

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

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

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

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

                url = await network.safe_process(
                    handler,
                    url_num=i,
                    log=log,
                )

                sport, event, ts = (
                    ev["sport"],
                    ev["event"],
                    ev["timestamp"],
                )

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

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

                entry = {
                    "url": url,
                    "logo": logo,
                    "base": BASE_URL,
                    "timestamp": ts,
                    "id": tvg_id or "Live.Event.us",
                    "link": ev["link"],
                }

                cached_urls[key] = entry

                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)