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5a30a94 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 | """Spotify Web API client with token caching and retry handling."""
import base64
import os
import time
from typing import Any, Dict, List, Optional
import requests
from dotenv import load_dotenv
load_dotenv(os.path.join(os.path.dirname(__file__), "..", ".env"))
class SpotifyClient:
"""Minimal Spotify Web API client (Client Credentials flow)."""
AUTH_URL = "https://accounts.spotify.com/api/token"
API_BASE = "https://api.spotify.com/v1"
def __init__(
self,
client_id: Optional[str] = None,
client_secret: Optional[str] = None,
timeout: int = 20,
):
self.client_id = client_id or os.getenv("SPOTIFY_CLIENT_ID")
self.client_secret = client_secret or os.getenv("SPOTIFY_CLIENT_SECRET")
self.timeout = timeout
self._access_token: Optional[str] = None
self._token_expires_at = 0.0
if (
not self.client_id
or not self.client_secret
or "your_spotify_client_id_here" in self.client_id
or "your_spotify_client_secret_here" in self.client_secret
):
raise RuntimeError(
"Spotify credentials are missing. Set SPOTIFY_CLIENT_ID and SPOTIFY_CLIENT_SECRET in .env."
)
def _refresh_access_token(self) -> str:
encoded = base64.b64encode(
f"{self.client_id}:{self.client_secret}".encode("utf-8")
).decode("utf-8")
headers = {
"Authorization": f"Basic {encoded}",
"Content-Type": "application/x-www-form-urlencoded",
}
response = requests.post(
self.AUTH_URL,
headers=headers,
data={"grant_type": "client_credentials"},
timeout=self.timeout,
)
if response.status_code != 200:
raise RuntimeError(
f"Spotify auth failed ({response.status_code}): {response.text}"
)
payload = response.json()
token = payload.get("access_token")
expires_in = int(payload.get("expires_in", 3600))
if not token:
raise RuntimeError("Spotify auth failed: missing access token")
self._access_token = token
self._token_expires_at = time.time() + max(expires_in - 30, 30)
return token
def _get_access_token(self) -> str:
if self._access_token and time.time() < self._token_expires_at:
return self._access_token
return self._refresh_access_token()
def _request(
self,
method: str,
path: str,
params: Optional[Dict[str, Any]] = None,
retries: int = 5,
) -> Dict[str, Any]:
url = path if path.startswith("http") else f"{self.API_BASE}{path}"
backoff = 0.5
for attempt in range(retries):
token = self._get_access_token()
headers = {"Authorization": f"Bearer {token}"}
response = requests.request(
method,
url,
params=params,
headers=headers,
timeout=self.timeout,
)
if response.status_code == 401 and attempt < retries - 1:
self._access_token = None
time.sleep(backoff)
backoff = min(backoff * 2, 8)
continue
if response.status_code == 429 and attempt < retries - 1:
retry_after = response.headers.get("Retry-After")
sleep_for = float(retry_after) if retry_after else backoff
sleep_for = min(sleep_for, 10) # Cap at 10s to avoid long hangs
time.sleep(max(sleep_for, 0.5))
backoff = min(backoff * 2, 8)
continue
if response.status_code >= 500 and attempt < retries - 1:
time.sleep(backoff)
backoff = min(backoff * 2, 8)
continue
if response.status_code >= 400:
raise RuntimeError(
f"Spotify API error ({response.status_code}): {response.text}"
)
if not response.text:
return {}
return response.json()
raise RuntimeError("Spotify API request failed after retries")
@staticmethod
def _dedupe_by_id(items: List[Dict[str, Any]]) -> List[Dict[str, Any]]:
seen = set()
deduped = []
for item in items:
item_id = item.get("id")
if not item_id or item_id in seen:
continue
seen.add(item_id)
deduped.append(item)
return deduped
def search_artist(self, name: str, limit: int = 5) -> List[Dict[str, Any]]:
payload = self._request(
"GET",
"/search",
params={
"q": name,
"type": "artist",
"limit": max(1, min(limit, 50)),
},
)
return payload.get("artists", {}).get("items", [])
def get_artist(self, artist_id: str) -> Dict[str, Any]:
return self._request("GET", f"/artists/{artist_id}")
def get_artist_top_tracks(self, artist_id: str, market: str = "IN") -> List[Dict[str, Any]]:
payload = self._request(
"GET",
f"/artists/{artist_id}/top-tracks",
params={"market": market},
)
return payload.get("tracks", [])
def get_artist_albums(
self,
artist_id: str,
include_groups: str = "album,single",
limit: int = 20,
market: Optional[str] = None,
) -> List[Dict[str, Any]]:
results: List[Dict[str, Any]] = []
offset = 0
# Some Spotify apps currently enforce a lower cap for this endpoint.
limit = max(1, min(limit, 100))
while len(results) < limit:
page_limit = min(50, limit - len(results))
params: Dict[str, Any] = {
"include_groups": include_groups,
"limit": page_limit,
"offset": offset,
}
if market:
params["market"] = market
payload = self._request("GET", f"/artists/{artist_id}/albums", params=params)
items = payload.get("items", [])
if not items:
break
results.extend(items)
if not payload.get("next"):
break
offset += len(items)
return self._dedupe_by_id(results)
def get_album_tracks(self, album_id: str, limit: int = 50) -> List[Dict[str, Any]]:
results: List[Dict[str, Any]] = []
offset = 0
limit = max(1, min(limit, 200))
while len(results) < limit:
page_limit = min(50, limit - len(results))
payload = self._request(
"GET",
f"/albums/{album_id}/tracks",
params={"limit": page_limit, "offset": offset},
)
items = payload.get("items", [])
if not items:
break
results.extend(items)
if not payload.get("next"):
break
offset += len(items)
return self._dedupe_by_id(results)
def get_tracks(self, track_ids: List[str]) -> List[Dict[str, Any]]:
if not track_ids:
return []
unique_ids = []
seen = set()
for track_id in track_ids:
if track_id and track_id not in seen:
seen.add(track_id)
unique_ids.append(track_id)
results: List[Dict[str, Any]] = []
for i in range(0, len(unique_ids), 50):
batch = unique_ids[i : i + 50]
payload = self._request("GET", "/tracks", params={"ids": ",".join(batch)})
tracks = payload.get("tracks", [])
for track in tracks:
if track:
results.append(track)
return self._dedupe_by_id(results)
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