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NtR-soudcloud-fetcher/src/ntr_fetcher/soundcloud.py

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import json
import logging
import re
from datetime import datetime
from urllib.parse import parse_qs, urlparse
import httpx
from ntr_fetcher.models import Track
logger = logging.getLogger(__name__)
SOUNDCLOUD_BASE = "https://soundcloud.com"
API_BASE = "https://api-v2.soundcloud.com"
HYDRATION_PATTERN = re.compile(r"__sc_hydration\s*=\s*(\[.*?\])\s*;", re.DOTALL)
def _build_cursor(until: datetime, user_id: int) -> str:
ts = until.strftime("%Y-%m-%dT%H:%M:%S.000Z")
padded_user = str(user_id).zfill(22)
return f"{ts},user-track-likes,000-{padded_user}-99999999999999999999"
class SoundCloudClient:
def __init__(self, http_client: httpx.AsyncClient | None = None):
self._http = http_client or httpx.AsyncClient(timeout=15.0)
self._client_id: str | None = None
async def _extract_client_id(self) -> str:
if self._client_id is not None:
return self._client_id
resp = await self._http.get(SOUNDCLOUD_BASE)
resp.raise_for_status()
match = HYDRATION_PATTERN.search(resp.text)
if not match:
raise ValueError("Could not find __sc_hydration in SoundCloud HTML — cannot extract client_id")
hydration = json.loads(match.group(1))
for entry in hydration:
if entry.get("hydratable") == "apiClient":
self._client_id = entry["data"]["id"]
is_expiring = entry["data"].get("isExpiring", False)
if is_expiring:
logger.warning("SoundCloud client_id is marked as expiring")
return self._client_id
raise ValueError("No apiClient entry in __sc_hydration — cannot extract client_id")
def invalidate_client_id(self) -> None:
self._client_id = None
async def close(self) -> None:
await self._http.aclose()