359 lines
13 KiB
Python
359 lines
13 KiB
Python
"""Playlist service for business logic operations."""
|
|
|
|
from typing import Any
|
|
|
|
from fastapi import HTTPException, status
|
|
from sqlmodel.ext.asyncio.session import AsyncSession
|
|
|
|
from app.core.logging import get_logger
|
|
from app.models.playlist import Playlist
|
|
from app.models.sound import Sound
|
|
from app.repositories.playlist import PlaylistRepository
|
|
from app.repositories.sound import SoundRepository
|
|
|
|
logger = get_logger(__name__)
|
|
|
|
|
|
class PlaylistService:
|
|
"""Service for playlist operations."""
|
|
|
|
def __init__(self, session: AsyncSession) -> None:
|
|
"""Initialize the playlist service."""
|
|
self.session = session
|
|
self.playlist_repo = PlaylistRepository(session)
|
|
self.sound_repo = SoundRepository(session)
|
|
|
|
async def get_playlist_by_id(self, playlist_id: int) -> Playlist:
|
|
"""Get a playlist by ID."""
|
|
playlist = await self.playlist_repo.get_by_id(playlist_id)
|
|
if not playlist:
|
|
raise HTTPException(
|
|
status_code=status.HTTP_404_NOT_FOUND,
|
|
detail="Playlist not found",
|
|
)
|
|
|
|
return playlist
|
|
|
|
async def get_user_playlists(self, user_id: int) -> list[Playlist]:
|
|
"""Get all playlists for a user."""
|
|
return await self.playlist_repo.get_by_user_id(user_id)
|
|
|
|
async def get_all_playlists(self) -> list[Playlist]:
|
|
"""Get all playlists from all users."""
|
|
return await self.playlist_repo.get_all()
|
|
|
|
async def get_main_playlist(self) -> Playlist:
|
|
"""Get the global main playlist."""
|
|
main_playlist = await self.playlist_repo.get_main_playlist()
|
|
|
|
if not main_playlist:
|
|
raise HTTPException(
|
|
status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
|
|
detail="Main playlist not found. Make sure to run database seeding.",
|
|
)
|
|
|
|
return main_playlist
|
|
|
|
async def get_current_playlist(self) -> Playlist:
|
|
"""Get the global current playlist, fallback to main playlist."""
|
|
current_playlist = await self.playlist_repo.get_global_current_playlist()
|
|
if current_playlist:
|
|
return current_playlist
|
|
|
|
# Fallback to main playlist if no current playlist is set
|
|
return await self.get_main_playlist()
|
|
|
|
async def create_playlist( # noqa: PLR0913
|
|
self,
|
|
user_id: int,
|
|
name: str,
|
|
description: str | None = None,
|
|
genre: str | None = None,
|
|
*,
|
|
is_main: bool = False,
|
|
is_current: bool = False,
|
|
is_deletable: bool = True,
|
|
) -> Playlist:
|
|
"""Create a new playlist."""
|
|
# Check if name already exists for this user
|
|
existing_playlist = await self.playlist_repo.get_by_name(name)
|
|
if existing_playlist and existing_playlist.user_id == user_id:
|
|
raise HTTPException(
|
|
status_code=status.HTTP_400_BAD_REQUEST,
|
|
detail="A playlist with this name already exists",
|
|
)
|
|
|
|
# If this is set as current, unset the previous current playlist
|
|
if is_current:
|
|
await self._unset_current_playlist(user_id)
|
|
|
|
playlist_data = {
|
|
"user_id": user_id,
|
|
"name": name,
|
|
"description": description,
|
|
"genre": genre,
|
|
"is_main": is_main,
|
|
"is_current": is_current,
|
|
"is_deletable": is_deletable,
|
|
}
|
|
|
|
playlist = await self.playlist_repo.create(playlist_data)
|
|
logger.info("Created playlist '%s' for user %s", name, user_id)
|
|
return playlist
|
|
|
|
async def update_playlist( # noqa: PLR0913
|
|
self,
|
|
playlist_id: int,
|
|
user_id: int,
|
|
*,
|
|
name: str | None = None,
|
|
description: str | None = None,
|
|
genre: str | None = None,
|
|
is_current: bool | None = None,
|
|
) -> Playlist:
|
|
"""Update a playlist."""
|
|
playlist = await self.get_playlist_by_id(playlist_id)
|
|
|
|
update_data: dict[str, Any] = {}
|
|
|
|
if name is not None:
|
|
# Check if new name conflicts with existing playlist
|
|
existing_playlist = await self.playlist_repo.get_by_name(name)
|
|
if (
|
|
existing_playlist
|
|
and existing_playlist.id != playlist_id
|
|
and existing_playlist.user_id == user_id
|
|
):
|
|
raise HTTPException(
|
|
status_code=status.HTTP_400_BAD_REQUEST,
|
|
detail="A playlist with this name already exists",
|
|
)
|
|
update_data["name"] = name
|
|
|
|
if description is not None:
|
|
update_data["description"] = description
|
|
|
|
if genre is not None:
|
|
update_data["genre"] = genre
|
|
|
|
if is_current is not None:
|
|
if is_current:
|
|
await self._unset_current_playlist(user_id)
|
|
update_data["is_current"] = is_current
|
|
|
|
if update_data:
|
|
playlist = await self.playlist_repo.update(playlist, update_data)
|
|
logger.info("Updated playlist %s for user %s", playlist_id, user_id)
|
|
|
|
return playlist
|
|
|
|
async def delete_playlist(self, playlist_id: int, user_id: int) -> None:
|
|
"""Delete a playlist."""
|
|
playlist = await self.get_playlist_by_id(playlist_id)
|
|
|
|
if not playlist.is_deletable:
|
|
raise HTTPException(
|
|
status_code=status.HTTP_400_BAD_REQUEST,
|
|
detail="This playlist cannot be deleted",
|
|
)
|
|
|
|
# Check if this is the current playlist
|
|
was_current = playlist.is_current
|
|
|
|
await self.playlist_repo.delete(playlist)
|
|
logger.info("Deleted playlist %s for user %s", playlist_id, user_id)
|
|
|
|
# If the deleted playlist was current, set main playlist as current
|
|
if was_current:
|
|
await self._set_main_as_current(user_id)
|
|
|
|
async def search_playlists(self, query: str, user_id: int) -> list[Playlist]:
|
|
"""Search user's playlists by name."""
|
|
return await self.playlist_repo.search_by_name(query, user_id)
|
|
|
|
async def search_all_playlists(self, query: str) -> list[Playlist]:
|
|
"""Search all playlists by name."""
|
|
return await self.playlist_repo.search_by_name(query)
|
|
|
|
async def get_playlist_sounds(self, playlist_id: int) -> list[Sound]:
|
|
"""Get all sounds in a playlist."""
|
|
await self.get_playlist_by_id(playlist_id) # Verify playlist exists
|
|
return await self.playlist_repo.get_playlist_sounds(playlist_id)
|
|
|
|
async def add_sound_to_playlist(
|
|
self,
|
|
playlist_id: int,
|
|
sound_id: int,
|
|
user_id: int,
|
|
position: int | None = None,
|
|
) -> None:
|
|
"""Add a sound to a playlist."""
|
|
# Verify playlist exists
|
|
await self.get_playlist_by_id(playlist_id)
|
|
|
|
# Verify sound exists
|
|
sound = await self.sound_repo.get_by_id(sound_id)
|
|
if not sound:
|
|
raise HTTPException(
|
|
status_code=status.HTTP_404_NOT_FOUND,
|
|
detail="Sound not found",
|
|
)
|
|
|
|
# Check if sound is already in playlist
|
|
if await self.playlist_repo.is_sound_in_playlist(playlist_id, sound_id):
|
|
raise HTTPException(
|
|
status_code=status.HTTP_400_BAD_REQUEST,
|
|
detail="Sound is already in this playlist",
|
|
)
|
|
|
|
await self.playlist_repo.add_sound_to_playlist(playlist_id, sound_id, position)
|
|
logger.info(
|
|
"Added sound %s to playlist %s for user %s",
|
|
sound_id,
|
|
playlist_id,
|
|
user_id,
|
|
)
|
|
|
|
async def remove_sound_from_playlist(
|
|
self,
|
|
playlist_id: int,
|
|
sound_id: int,
|
|
user_id: int,
|
|
) -> None:
|
|
"""Remove a sound from a playlist."""
|
|
# Verify playlist exists
|
|
await self.get_playlist_by_id(playlist_id)
|
|
|
|
# Check if sound is in playlist
|
|
if not await self.playlist_repo.is_sound_in_playlist(playlist_id, sound_id):
|
|
raise HTTPException(
|
|
status_code=status.HTTP_404_NOT_FOUND,
|
|
detail="Sound not found in this playlist",
|
|
)
|
|
|
|
await self.playlist_repo.remove_sound_from_playlist(playlist_id, sound_id)
|
|
logger.info(
|
|
"Removed sound %s from playlist %s for user %s",
|
|
sound_id,
|
|
playlist_id,
|
|
user_id,
|
|
)
|
|
|
|
async def reorder_playlist_sounds(
|
|
self,
|
|
playlist_id: int,
|
|
user_id: int,
|
|
sound_positions: list[tuple[int, int]],
|
|
) -> None:
|
|
"""Reorder sounds in a playlist."""
|
|
# Verify playlist exists
|
|
await self.get_playlist_by_id(playlist_id)
|
|
|
|
# Validate all sounds are in the playlist
|
|
for sound_id, _ in sound_positions:
|
|
if not await self.playlist_repo.is_sound_in_playlist(playlist_id, sound_id):
|
|
raise HTTPException(
|
|
status_code=status.HTTP_400_BAD_REQUEST,
|
|
detail=f"Sound {sound_id} is not in this playlist",
|
|
)
|
|
|
|
await self.playlist_repo.reorder_playlist_sounds(playlist_id, sound_positions)
|
|
logger.info("Reordered sounds in playlist %s for user %s", playlist_id, user_id)
|
|
|
|
async def set_current_playlist(self, playlist_id: int, user_id: int) -> Playlist:
|
|
"""Set a playlist as the current playlist."""
|
|
playlist = await self.get_playlist_by_id(playlist_id)
|
|
|
|
# Unset previous current playlist
|
|
await self._unset_current_playlist(user_id)
|
|
|
|
# Set new current playlist
|
|
playlist = await self.playlist_repo.update(playlist, {"is_current": True})
|
|
logger.info("Set playlist %s as current for user %s", playlist_id, user_id)
|
|
return playlist
|
|
|
|
async def unset_current_playlist(self, user_id: int) -> None:
|
|
"""Unset the current playlist and set main playlist as current."""
|
|
await self._unset_current_playlist(user_id)
|
|
await self._set_main_as_current(user_id)
|
|
logger.info(
|
|
"Unset current playlist and set main as current for user %s",
|
|
user_id,
|
|
)
|
|
|
|
async def get_playlist_stats(self, playlist_id: int) -> dict[str, Any]:
|
|
"""Get statistics for a playlist."""
|
|
await self.get_playlist_by_id(playlist_id) # Verify playlist exists
|
|
|
|
sound_count = await self.playlist_repo.get_playlist_sound_count(playlist_id)
|
|
sounds = await self.playlist_repo.get_playlist_sounds(playlist_id)
|
|
|
|
total_duration = sum(sound.duration or 0 for sound in sounds)
|
|
total_plays = sum(sound.play_count or 0 for sound in sounds)
|
|
|
|
return {
|
|
"sound_count": sound_count,
|
|
"total_duration_ms": total_duration,
|
|
"total_play_count": total_plays,
|
|
}
|
|
|
|
async def add_sound_to_main_playlist(self, sound_id: int, user_id: int) -> None:
|
|
"""Add a sound to the global main playlist."""
|
|
main_playlist = await self.get_main_playlist()
|
|
|
|
if main_playlist.id is None:
|
|
msg = "Main playlist has no ID, cannot add sound"
|
|
raise ValueError(msg)
|
|
|
|
# Check if sound is already in main playlist
|
|
if not await self.playlist_repo.is_sound_in_playlist(
|
|
main_playlist.id,
|
|
sound_id,
|
|
):
|
|
await self.playlist_repo.add_sound_to_playlist(main_playlist.id, sound_id)
|
|
logger.info(
|
|
"Added sound %s to main playlist for user %s",
|
|
sound_id,
|
|
user_id,
|
|
)
|
|
|
|
# Global current playlist methods
|
|
async def set_current_playlist_global(self, playlist_id: int) -> Playlist:
|
|
"""Set a playlist as the global current playlist (app-wide)."""
|
|
playlist = await self.get_playlist_by_id(playlist_id)
|
|
|
|
# Unset any existing current playlist globally
|
|
await self._unset_global_current_playlist()
|
|
|
|
# Set new current playlist
|
|
playlist = await self.playlist_repo.update(playlist, {"is_current": True})
|
|
logger.info("Set playlist %s as global current playlist", playlist_id)
|
|
return playlist
|
|
|
|
async def unset_current_playlist_global(self) -> None:
|
|
"""Unset the global current playlist (main playlist becomes fallback)."""
|
|
await self._unset_global_current_playlist()
|
|
logger.info("Unset global current playlist, main playlist is now fallback")
|
|
|
|
async def _unset_global_current_playlist(self) -> None:
|
|
"""Unset any current playlist globally."""
|
|
current_playlist = await self.playlist_repo.get_global_current_playlist()
|
|
if current_playlist:
|
|
await self.playlist_repo.update(current_playlist, {"is_current": False})
|
|
|
|
async def _unset_current_playlist(self, user_id: int) -> None:
|
|
"""Unset the current playlist for a user."""
|
|
current_playlist = await self.playlist_repo.get_current_playlist(user_id)
|
|
if current_playlist:
|
|
await self.playlist_repo.update(current_playlist, {"is_current": False})
|
|
|
|
async def _set_main_as_current(self, user_id: int) -> None:
|
|
"""Unset current playlist so main playlist becomes the fallback current."""
|
|
# Just ensure no user playlist is marked as current
|
|
# The get_current_playlist method will fallback to main playlist
|
|
await self._unset_current_playlist(user_id)
|
|
logger.info(
|
|
"Unset current playlist for user %s, main playlist is now fallback",
|
|
user_id,
|
|
)
|