stream-api/backend/config.py

import json
import logging
import os
import pprint
import re
import sys
import dataclasses
from typing import Literal, cast


import pydantic
import aiohttp
import streamlink
from tornado import template

logging.basicConfig(
    format="[%(filename)s:%(lineno)d] %(message)s",
    stream=sys.stdout,
    level=logging.INFO,
)
logger = logging.getLogger(__name__)

providers: dict[str, str] = {}
providers["nrk"] = "https://tv.nrk.no"
providers["nrk_web"] = "https://nrk.no"
providers["svt"] = "https://svtplay.se"
providers["youtube"] = "https://www.youtube.com/watch?v="
providers["twitch"] = "https://twitch.tv"
providers["twitter"] = "https://twitter.com"

nextcloud_server = os.environ.get("NEXTCLOUD_SERVER")
if nextcloud_server is not None:
    providers["nextcloud"] = nextcloud_server

seafile_server = os.environ.get("SEAFILE_SERVER")
if seafile_server is not None:
    providers["seafile"] = seafile_server

playlist = None
icecast_server = os.environ.get("ICECAST_SERVER")
stream_server = os.environ.get("STREAM_SERVER")
proxy_server = os.environ.get("PROXY_SERVER")


@dataclasses.dataclass
class LinkWithType:
    upstream: str
    ctype: None | str = None


class ProxyCreateLink(pydantic.BaseModel):
    upstream: None | pydantic.HttpUrl
    ctype: None | pydantic.StrictStr
    region: None | pydantic.StrictStr


class ProxyRequest(pydantic.BaseModel):
    action: Literal["create-urls", "read-config"]
    urls: None | list[ProxyCreateLink]


class ProxyResponse(pydantic.BaseModel):
    action: Literal["create-urls", "read-config"]
    urls: None | list[pydantic.HttpUrl]


class ProxyElem:
    def __init__(self, proxy, region):
        self.proxy = proxy
        self.region = region

    def local(self):
        timeout = aiohttp.ClientTimeout(total=5)
        return aiohttp.ClientSession(timeout=timeout)

    def __repr__(self):
        return f"<region=<{str(self.region)}> proxy=<{str(self.proxy)}>>"

    async def proxy_url(self, urls: list[LinkWithType]):
        clean_urls = []
        link_requests: list[ProxyCreateLink] = []
        for url in urls:
            clean_urls.append(url.upstream if isinstance(url.upstream, str) else None)
        if not isinstance(proxy_server, str):
            return clean_urls

        try:
            for url in urls:
                link_requests.append(
                    ProxyCreateLink.parse_obj(
                        {
                            "upstream": url.upstream,
                            "ctype": url.ctype,
                            "region": self.region,
                        }
                    )
                )
        except pydantic.ValidationError as e:
            logger.info(e)
            return clean_urls

        request_data: ProxyRequest
        response_data: ProxyResponse

        try:
            request_data = ProxyRequest.parse_obj(
                {"urls": link_requests, "action": "create-urls"}
            )
        except pydantic.ValidationError as e:
            logger.info(e)
            return clean_urls

        try:
            async with self.local() as session:
                resp = await session.post(proxy_server, json=request_data.dict())
                response_data = cast(
                    ProxyResponse, ProxyResponse.parse_obj(await resp.json())
                )
        except (aiohttp.ClientError, pydantic.ValidationError) as e:
            logger.info(e)
        else:
            ret_data: list[None | str] = []
            if response_data.urls is not None:
                for src, dst in zip(clean_urls, response_data.urls):
                    if isinstance(src, str):
                        ret_data.append(dst)
                    else:
                        ret_data.append(None)
            return ret_data
        return clean_urls


proxies: dict[str, list[ProxyElem]] = {}

new_providers = {}
for key in providers:
    region_expr = re.compile(f"^{key}_region(_[a-z][a-z])?[0-9]+$", re.IGNORECASE)
    region_matches = list(filter(region_expr.match, os.environ.keys()))
    proxy_expr = re.compile(f"^{key}_proxy(_[a-z][a-z])?[0-9]+$", re.IGNORECASE)
    proxy_matches = list(filter(proxy_expr.match, os.environ.keys()))
    proxy_current = []
    proxy_current_keys = set()
    proxy_current_keys.add(key)
    proxy_countries = []
    proxy_empty = True

    region_current = []
    region_current_keys = set()
    region_current_keys.add(key)
    region_countries = []
    region_empty = True

    for match in proxy_matches:
        proxy_match = proxy_expr.match(match.lower())
        if proxy_match is None:
            continue
        proxy_country_groups = proxy_match.groups()
        proxy_country = None
        pos = len(proxy_country_groups) - 1
        if pos >= 0:
            country_temp = proxy_country_groups[pos]
            if isinstance(country_temp, str):
                proxy_country = country_temp.strip("_")
                proxy_current_keys.add(f"{key}_{proxy_country}")
        proxy_link = os.environ.get(match)
        if proxy_link is not None:
            proxy_current.append(proxy_link)
            proxy_countries.append(proxy_country)
            if proxy_country is None:
                proxy_empty = False

    for match in region_matches:
        region_match = region_expr.match(match.lower())
        if region_match is None:
            continue
        region_country_groups = region_match.groups()
        region_country = None
        pos = len(region_country_groups) - 1
        if pos >= 0:
            country_temp = region_country_groups[pos]
            if isinstance(country_temp, str):
                region_country = country_temp.strip("_")
                region_current_keys.add(f"{key}_{region_country}")
        region_name = os.environ.get(match)
        if region_name is not None:
            region_current.append(region_name)
            region_countries.append(region_country)
            if region_country is None:
                region_empty = False

    for elem in proxy_current_keys:
        proxies[elem] = []
        new_providers[elem] = providers[key]

    for proxy_link, region_name, country in zip(
        proxy_current, region_current, proxy_countries
    ):
        new_key = key
        if country is not None:
            new_key = f"{key}_{country}"
        proxies[new_key].append(ProxyElem(proxy_link, region_name))

    for elem in proxy_current_keys:
        if len(proxies[elem]) == 0:
            proxies[elem].append(ProxyElem(None, None))

pprint.pp(proxies)
providers = new_providers

streamlink_sessions: dict[str, streamlink.session.Streamlink] = {}
streamlink_default_session = streamlink.Streamlink()

proxy_keys: list[str] = []
for proxy_provider in proxies.values():
    for proxy_elem in proxy_provider:
        if isinstance(proxy_elem, ProxyElem) and isinstance(proxy_elem.proxy, str):
            proxy_keys.append(proxy_elem.proxy)
            streamlink_sessions[proxy_elem.proxy] = streamlink.Streamlink()
            streamlink_sessions[proxy_elem.proxy].set_option(
                "http-proxy", "socks5://" + proxy_elem.proxy
            )
            streamlink_sessions[proxy_elem.proxy].set_option(
                "https-proxy", "socks5://" + proxy_elem.proxy
            )

if icecast_server is not None and stream_server is not None:
    try:
        with open("/app/sources.json", "r", encoding="utf-8") as f:
            data = json.loads(f.read())
            playlist = "#EXTM3U\n"
            for key in data:
                current = data[key]
                name = current["name"]
                radio = current["radio"]
                if radio:
                    playlist += f'#EXTINF:0 radio="true", {name}\n'
                    playlist += icecast_server + key + "\n"
                else:
                    playlist += f'#EXTINF:0 radio="false", {name}\n'
                    playlist += stream_server + key + "\n"
    except OSError as e:
        logger.info(e)

template_html = None
template_script = None
videojs_version = None
font_awesome_version = None
custom_style = None
favicon = None
try:
    with open("/app/index.html", "r", encoding="utf-8") as f:
        template_html = template.Template(f.read().strip())
    with open("/app/script.js", "r", encoding="utf-8") as f:
        template_script = template.Template(f.read().strip())
    with open("/app/version/video.js.txt", "r", encoding="utf-8") as f:
        videojs_version = f.read().strip()
    with open("/app/version/chromecast.txt", "r", encoding="utf-8") as f:
        chromecast_version = f.read().strip()
    with open("/app/version/font-awesome.txt", "r", encoding="utf-8") as f:
        font_awesome_version = f.read().strip()
    with open("/app/favicon.png", "rb") as fb:
        favicon = fb.read()
    with open("/app/style.css", "r", encoding="utf-8") as f:
        custom_style = f.read()
except OSError as e:
    logger.info(e)