Split Apple Music provider into modular structure

music_assistant/providers/apple_music/api_client.py

@@ -0,0 +1,186 @@
+"""Apple Music API client."""
+
+from __future__ import annotations
+
+from typing import TYPE_CHECKING, Any
+
+from music_assistant_models.enums import MediaType
+from music_assistant_models.errors import (
+    MediaNotFoundError,
+    MusicAssistantError,
+    ResourceTemporarilyUnavailable,
+)
+
+from music_assistant.helpers.json import json_loads
+from music_assistant.helpers.throttle_retry import ThrottlerManager, throttle_with_retries
+
+from .helpers.utils import is_catalog_id, is_library_id, translate_media_type_to_apple_type
+
+if TYPE_CHECKING:
+    from .provider import AppleMusicProvider
+
+_APPLE_API_BASE = "https://api.music.apple.com/v1"
+
+__all__ = [
+    "AppleMusicAPIClient",
+    "is_catalog_id",
+    "is_library_id",
+    "translate_media_type_to_apple_type",
+]
+
+
+class AppleMusicAPIClient:
+    """Handles all HTTP communication with the Apple Music API."""
+
+    throttler = ThrottlerManager(rate_limit=1, period=2, initial_backoff=15)
+
+    def __init__(self, provider: AppleMusicProvider) -> None:
+        """Initialize the API client."""
+        self.provider = provider
+        self.logger = provider.logger
+
+    @property
+    def _headers(self) -> dict[str, str]:
+        """Return standard auth headers."""
+        return {
+            "Authorization": f"Bearer {self.provider._music_app_token}",
+            "Music-User-Token": self.provider._music_user_token,
+        }
+
+    @throttle_with_retries
+    async def get_data(self, endpoint: str, **kwargs: Any) -> dict[str, Any]:
+        """GET data from the Apple Music API."""
+        url = f"{_APPLE_API_BASE}/{endpoint}"
+        async with (
+            self.provider.mass.http_session.get(
+                url, headers=self._headers, params=kwargs, ssl=True, timeout=120
+            ) as response,
+        ):
+            if response.status == 404 and "limit" in kwargs and "offset" in kwargs:
+                return {}
+            if response.status == 404:
+                raise MediaNotFoundError(f"{endpoint} not found")
+            if response.status == 504:
+                self.provider.logger.debug(
+                    "Apple Music API Timeout: url=%s, params=%s, response_headers=%s",
+                    url,
+                    kwargs,
+                    response.headers,
+                )
+                raise ResourceTemporarilyUnavailable("Apple Music API Timeout")
+            if response.status == 429:
+                self.provider.logger.debug(
+                    "Apple Music Rate Limiter. Headers: %s", response.headers
+                )
+                raise ResourceTemporarilyUnavailable("Apple Music Rate Limiter")
+            if response.status == 500:
+                raise MusicAssistantError("Unexpected server error when calling Apple Music")
+            response.raise_for_status()
+            return await response.json(loads=json_loads)
+
+    @throttle_with_retries
+    async def delete_data(self, endpoint: str, data: Any = None, **kwargs: Any) -> None:
+        """DELETE data from the Apple Music API."""
+        url = f"{_APPLE_API_BASE}/{endpoint}"
+        async with (
+            self.provider.mass.http_session.delete(
+                url, headers=self._headers, params=kwargs, json=data, ssl=True, timeout=120
+            ) as response,
+        ):
+            if response.status == 404:
+                raise MediaNotFoundError(f"{endpoint} not found")
+            if response.status == 429:
+                self.provider.logger.debug(
+                    "Apple Music Rate Limiter. Headers: %s", response.headers
+                )
+                raise ResourceTemporarilyUnavailable("Apple Music Rate Limiter")
+            response.raise_for_status()
+
+    async def put_data(self, endpoint: str, data: Any = None, **kwargs: Any) -> dict[str, Any]:
+        """PUT data to the Apple Music API."""
+        url = f"{_APPLE_API_BASE}/{endpoint}"
+        async with (
+            self.provider.mass.http_session.put(
+                url, headers=self._headers, params=kwargs, json=data, ssl=True, timeout=120
+            ) as response,
+        ):
+            if response.status == 404:
+                raise MediaNotFoundError(f"{endpoint} not found")
+            if response.status == 429:
+                self.provider.logger.debug(
+                    "Apple Music Rate Limiter. Headers: %s", response.headers
+                )
+                raise ResourceTemporarilyUnavailable("Apple Music Rate Limiter")
+            response.raise_for_status()
+            if response.content_length:
+                return await response.json(loads=json_loads)
+            return {}
+
+    @throttle_with_retries
+    async def post_data(self, endpoint: str, data: Any = None, **kwargs: Any) -> dict[str, Any]:
+        """POST data to the Apple Music API."""
+        url = f"{_APPLE_API_BASE}/{endpoint}"
+        async with (
+            self.provider.mass.http_session.post(
+                url, headers=self._headers, params=kwargs, json=data, ssl=True, timeout=120
+            ) as response,
+        ):
+            if response.status == 404:
+                raise MediaNotFoundError(f"{endpoint} not found")
+            if response.status == 429:
+                self.provider.logger.debug(
+                    "Apple Music Rate Limiter. Headers: %s", response.headers
+                )
+                raise ResourceTemporarilyUnavailable("Apple Music Rate Limiter")
+            response.raise_for_status()
+            return await response.json(loads=json_loads)
+
+    async def get_all_items(self, endpoint: str, key: str = "data", **kwargs: Any) -> list[dict]:
+        """Get all items from a paged list."""
+        limit = 50
+        offset = 0
+        all_items: list[dict] = []
+        while True:
+            kwargs["limit"] = limit
+            kwargs["offset"] = offset
+            result = await self.get_data(endpoint, **kwargs)
+            if key not in result:
+                break
+            all_items += result[key]
+            if not result.get("next"):
+                break
+            offset += limit
+        return all_items
+
+    async def get_user_storefront(self) -> str:
+        """Return the user's storefront identifier."""
+        locale = self.provider.mass.metadata.locale.replace("_", "-")
+        language = locale.split("-")[0]
+        result = await self.get_data("me/storefront", l=language)
+        return result["data"][0]["id"]
+
+    async def get_ratings(self, item_ids: list[str], media_type: MediaType) -> dict[str, bool]:
+        """Return a mapping of item_id → is_favourite for a list of IDs."""
+        if media_type == MediaType.ARTIST:
+            raise NotImplementedError(
+                "Ratings are not available for artist in the Apple Music API."
+            )
+        if not item_ids:
+            return {}
+        apple_type = translate_media_type_to_apple_type(media_type)
+        endpoint = apple_type if not is_library_id(item_ids[0]) else f"library-{apple_type}"
+        max_ids_per_request = 200
+        results: dict[str, bool] = {}
+        for i in range(0, len(item_ids), max_ids_per_request):
+            batch_ids = item_ids[i : i + max_ids_per_request]
+            response = await self.get_data(
+                f"me/ratings/{endpoint}",
+                ids=",".join(batch_ids),
+            )
+            results.update(
+                {
+                    item["id"]: bool(item["attributes"].get("value", False) == 1)
+                    for item in response.get("data", [])
+                }
+            )
+        return results

music_assistant/providers/apple_music/constants.py

@@ -0,0 +1,38 @@
+"""Constants for Apple Music provider."""
+
+from music_assistant_models.enums import ProviderFeature
+
+from music_assistant.helpers.app_vars import app_var
+
+SUPPORTED_FEATURES = {
+    ProviderFeature.LIBRARY_ARTISTS,
+    ProviderFeature.LIBRARY_ALBUMS,
+    ProviderFeature.LIBRARY_TRACKS,
+    ProviderFeature.LIBRARY_PLAYLISTS,
+    ProviderFeature.BROWSE,
+    ProviderFeature.SEARCH,
+    ProviderFeature.RECOMMENDATIONS,
+    ProviderFeature.ARTIST_ALBUMS,
+    ProviderFeature.ARTIST_TOPTRACKS,
+    ProviderFeature.SIMILAR_TRACKS,
+    ProviderFeature.LIBRARY_ALBUMS_EDIT,
+    ProviderFeature.LIBRARY_ARTISTS_EDIT,
+    ProviderFeature.LIBRARY_PLAYLISTS_EDIT,
+    ProviderFeature.LIBRARY_TRACKS_EDIT,
+    ProviderFeature.PLAYLIST_TRACKS_EDIT,
+    ProviderFeature.FAVORITE_ALBUMS_EDIT,
+    ProviderFeature.FAVORITE_TRACKS_EDIT,
+    ProviderFeature.FAVORITE_PLAYLISTS_EDIT,
+}
+
+MUSIC_APP_TOKEN = app_var(8)
+WIDEVINE_BASE_PATH = "/usr/local/bin/widevine_cdm"
+DECRYPT_CLIENT_ID_FILENAME = "client_id.bin"
+DECRYPT_PRIVATE_KEY_FILENAME = "private_key.pem"
+UNKNOWN_PLAYLIST_NAME = "Unknown Apple Music Playlist"
+CONF_MUSIC_APP_TOKEN = "music_app_token"
+CONF_MUSIC_USER_TOKEN = "music_user_token"
+CONF_MUSIC_USER_MANUAL_TOKEN = "music_user_manual_token"
+CONF_MUSIC_USER_TOKEN_TIMESTAMP = "music_user_token_timestamp"
+CACHE_CATEGORY_DECRYPT_KEY = 1
+MAX_ARTWORK_DIMENSION = 1000

music_assistant/providers/apple_music/helpers/__init__.py

@@ -1,5 +1,11 @@
 """Various Apple Music utils/helpers."""
 
 from .browse import browse_playlists
+from .utils import is_catalog_id, is_library_id, translate_media_type_to_apple_type
 
-__all__ = ["browse_playlists"]
+__all__ = [
+    "browse_playlists",
+    "is_catalog_id",
+    "is_library_id",
+    "translate_media_type_to_apple_type",
+]

music_assistant/providers/apple_music/helpers/browse.py

@@ -11,7 +11,7 @@
 from music_assistant_models.media_items import BrowseFolder, Playlist, ProviderMapping
 
 if TYPE_CHECKING:
-    from music_assistant.providers.apple_music import AppleMusicProvider
+    from music_assistant.providers.apple_music.provider import AppleMusicProvider
 
 ROOT_PLAYLIST_FOLDER_ID = "p.playlistsroot"
 # Apple exposes the entire playlist hierarchy under this synthetic root. We walk the

music_assistant/providers/apple_music/helpers/utils.py

@@ -0,0 +1,35 @@
+"""Utility helpers for the Apple Music provider."""
+
+from __future__ import annotations
+
+import re
+from typing import Any
+
+from music_assistant_models.enums import MediaType
+from music_assistant_models.errors import MusicAssistantError
+
+
+def is_library_id(library_id: Any) -> bool:
+    """Return True if the ID matches the Apple Music library ID format."""
+    if not isinstance(library_id, str):
+        return False
+    return bool(re.fullmatch(r"[ailp]\.[a-zA-Z0-9]+", library_id))
+
+
+def is_catalog_id(catalog_id: str) -> bool:
+    """Return True if the ID is a catalog ID (numeric or starts with 'pl.')."""
+    return catalog_id.isnumeric() or catalog_id.startswith("pl.")
+
+
+def translate_media_type_to_apple_type(media_type: MediaType) -> str:
+    """Translate a MediaType to the Apple Music API endpoint segment."""
+    match media_type:
+        case MediaType.ARTIST:
+            return "artists"
+        case MediaType.ALBUM:
+            return "albums"
+        case MediaType.TRACK:
+            return "songs"
+        case MediaType.PLAYLIST:
+            return "playlists"
+    raise MusicAssistantError(f"Unsupported media type: {media_type}")