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281 lines
11 KiB
281 lines
11 KiB
"""
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Hydrabase P2P metadata client.
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Sends search requests over a shared WebSocket connection and returns
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results normalized to the same dataclass types used by SpotifyClient
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and iTunesClient (Track, Artist, Album).
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"""
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import json
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import logging
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import re
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import time
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from typing import List, Optional, Callable, Tuple
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from core.itunes_client import Track, Artist, Album
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logger = logging.getLogger(__name__)
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class HydrabaseClient:
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"""
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Synchronous metadata client that queries the Hydrabase P2P network.
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Shares the WebSocket connection and lock with HydrabaseWorker.
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All search methods block until a response is received (with timeout).
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"""
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def __init__(self, get_ws_and_lock: Callable[[], Tuple]):
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"""
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Args:
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get_ws_and_lock: Callable returning (ws, lock) tuple.
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Same callable used by HydrabaseWorker.
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"""
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self.get_ws_and_lock = get_ws_and_lock
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self.timeout = 15 # seconds
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self.last_peer_count = None
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self.last_peer_count_time = None
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def is_connected(self) -> bool:
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ws, lock = self.get_ws_and_lock()
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if ws is None:
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return False
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try:
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return ws.connected
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except Exception:
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return False
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def _extract_stats(self, data):
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"""Extract peer stats from any message that contains them."""
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if isinstance(data, dict) and 'stats' in data:
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stats = data['stats']
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if isinstance(stats, dict) and 'connectedPeers' in stats:
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self.last_peer_count = stats['connectedPeers']
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self.last_peer_count_time = time.time()
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@staticmethod
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def _extract_results(data) -> Optional[list]:
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"""Extract results array from a response dict. Returns None if not a results message."""
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if not isinstance(data, dict):
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return None
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if 'response' in data:
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resp = data['response']
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return resp if isinstance(resp, list) else [resp]
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if 'results' in data:
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return data['results']
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if 'data' in data:
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result = data['data']
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return result if isinstance(result, list) else [result]
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return None
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def _send_and_recv(self, request_type: str, query: str) -> Optional[list]:
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"""Send a search request and return the response array.
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Uses a nonce for request-response correlation and loops on recv()
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to drain any interleaved stats/heartbeat messages from the server.
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"""
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ws, lock = self.get_ws_and_lock()
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if ws is None:
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return None
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try:
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if not ws.connected:
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return None
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except Exception:
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return None
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nonce = int(time.time() * 1000)
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payload = json.dumps({
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'request': {
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'type': request_type,
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'query': query
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},
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'nonce': nonce
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})
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try:
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with lock:
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ws.settimeout(self.timeout)
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ws.send(payload)
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deadline = time.time() + self.timeout
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while True:
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remaining = deadline - time.time()
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if remaining <= 0:
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logger.warning(f"Hydrabase response timeout for ({request_type}, '{query}')")
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return None
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ws.settimeout(remaining)
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raw = ws.recv()
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data = json.loads(raw)
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# Always extract stats from any message
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self._extract_stats(data)
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# Bare list — results with no envelope
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if isinstance(data, list):
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return data
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if not isinstance(data, dict):
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continue
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# Response has our nonce — definitely ours
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if data.get('nonce') == nonce:
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results = self._extract_results(data)
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return results if results is not None else []
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# Response has results but no nonce (server doesn't echo nonces)
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if 'nonce' not in data:
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results = self._extract_results(data)
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if results is not None:
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return results
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# Stats-only message with no nonce — skip and recv again
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logger.debug(f"Hydrabase draining non-result message for ({request_type}, '{query}')")
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continue
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# Has a nonce but not ours — stale response, skip it
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logger.debug(f"Hydrabase draining stale nonce response for ({request_type}, '{query}')")
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except Exception as e:
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logger.error(f"Hydrabase query failed ({request_type}, '{query}'): {e}")
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return None
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@staticmethod
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def _normalize_release_date(date_str: str) -> str:
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"""Strip time portion from ISO dates like '1995-01-01T08:00:00Z' -> '1995-01-01'."""
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if not date_str:
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return date_str
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# Match YYYY-MM-DD at the start, discard the rest
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match = re.match(r'(\d{4}(?:-\d{2}(?:-\d{2})?)?)', date_str)
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return match.group(1) if match else date_str
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# ==================== Track Methods ====================
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def search_tracks(self, query: str, limit: int = 20) -> List[Track]:
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results = self._send_and_recv('track', query)
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if not results:
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return []
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tracks = []
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for item in results[:limit]:
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try:
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tracks.append(Track(
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id=str(item.get('id', '')),
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name=item.get('name', ''),
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artists=item.get('artists', []),
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album=item.get('album', ''),
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duration_ms=item.get('duration_ms', 0),
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popularity=item.get('popularity', 0),
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preview_url=item.get('preview_url'),
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external_urls=item.get('external_urls'),
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image_url=item.get('image_url'),
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release_date=self._normalize_release_date(item.get('release_date', ''))
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))
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except Exception as e:
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logger.debug(f"Skipping malformed Hydrabase track: {e}")
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return tracks
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# ==================== Artist Methods ====================
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def search_artists(self, query: str, limit: int = 20) -> List[Artist]:
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results = self._send_and_recv('artists', query)
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if not results:
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return []
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artists = []
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for item in results[:limit]:
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try:
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artists.append(Artist(
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id=str(item.get('id', '')),
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name=item.get('name', ''),
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popularity=item.get('popularity', 0),
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genres=item.get('genres', []),
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followers=item.get('followers', 0),
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image_url=item.get('image_url'),
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external_urls=item.get('external_urls')
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))
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except Exception as e:
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logger.debug(f"Skipping malformed Hydrabase artist: {e}")
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return artists
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# ==================== Album Methods ====================
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def search_albums(self, query: str, limit: int = 20) -> List[Album]:
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results = self._send_and_recv('album', query)
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if not results:
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return []
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albums = []
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for item in results[:limit]:
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try:
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albums.append(Album(
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id=str(item.get('soul_id', item.get('id', ''))),
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name=item.get('name', ''),
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artists=item.get('artists', []),
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release_date=self._normalize_release_date(item.get('release_date', '')),
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total_tracks=item.get('total_tracks', 0),
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album_type=item.get('album_type', 'album'),
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image_url=item.get('image_url'),
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external_urls=item.get('external_urls')
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))
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except Exception as e:
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logger.debug(f"Skipping malformed Hydrabase album: {e}")
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return albums
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# ==================== Discography Methods ====================
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def search_discography(self, artist_name: str, limit: int = 50) -> List[Album]:
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"""Fetch an artist's discography (albums + singles) from Hydrabase."""
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results = self._send_and_recv('discography', artist_name)
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if not results:
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return []
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albums = []
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for item in results[:limit]:
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try:
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albums.append(Album(
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id=str(item.get('soul_id', item.get('id', ''))),
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name=item.get('name', ''),
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artists=item.get('artists', []),
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release_date=self._normalize_release_date(item.get('release_date', '')),
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total_tracks=item.get('total_tracks', 0),
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album_type=item.get('album_type', 'album'),
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image_url=item.get('image_url'),
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external_urls=item.get('external_urls')
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))
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except Exception as e:
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logger.debug(f"Skipping malformed Hydrabase discography album: {e}")
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return albums
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def get_album_tracks(self, album_id: str, limit: int = 50) -> List[Track]:
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"""Fetch tracks for an album from Hydrabase by soul_id."""
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results = self._send_and_recv('album.tracks', album_id)
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if not results:
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return []
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tracks = []
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for item in results[:limit]:
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try:
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tracks.append(Track(
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id=str(item.get('id', '')),
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name=item.get('name', ''),
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artists=item.get('artists', []),
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album=item.get('album', ''),
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duration_ms=item.get('duration_ms', 0),
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popularity=item.get('popularity', 0),
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preview_url=item.get('preview_url'),
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external_urls=item.get('external_urls'),
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image_url=item.get('image_url'),
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release_date=self._normalize_release_date(item.get('release_date', '')),
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track_number=item.get('track_number'),
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disc_number=item.get('disc_number'),
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))
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except Exception as e:
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logger.debug(f"Skipping malformed Hydrabase album track: {e}")
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return tracks
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# ==================== Raw access (for comparison) ====================
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def search_raw(self, query: str, search_type: str) -> Optional[list]:
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"""Return raw Hydrabase results without normalization (for comparison UI)."""
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return self._send_and_recv(search_type, query)
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