import uuid import django.contrib.postgres.fields as postgres from django.utils.translation import ugettext_lazy as _ from django.db import models from django.core.serializers.json import DjangoJSONEncoder from django.shortcuts import reverse from common.models import Entity, Mark, Review, Tag, SourceSiteEnum from common.utils import ChoicesDictGenerator, GenerateDateUUIDMediaFilePath from django.utils import timezone from django.conf import settings def song_cover_path(instance, filename): return GenerateDateUUIDMediaFilePath(instance, filename, settings.SONG_MEDIA_PATH_ROOT) def album_cover_path(instance, filename): return GenerateDateUUIDMediaFilePath(instance, filename, settings.ALBUM_MEDIA_PATH_ROOT) class Album(Entity): title = models.CharField(_("标题"), max_length=500) release_date = models.DateField( _('发行日期'), auto_now=False, auto_now_add=False, null=True, blank=True) cover = models.ImageField( _("封面"), upload_to=album_cover_path, default=settings.DEFAULT_ALBUM_IMAGE, blank=True) duration = models.PositiveIntegerField(_("时长"), null=True, blank=True) artist = postgres.ArrayField( models.CharField(_("artist"), blank=True, default='', max_length=100), null=True, blank=True, default=list, verbose_name=_("艺术家") ) genre = models.CharField(_("流派"), blank=True, default='', max_length=100) company = postgres.ArrayField( models.CharField(blank=True, default='', max_length=500), null=True, blank=True, default=list, verbose_name=_("发行方") ) track_list = models.TextField(_("曲目"), blank=True, default="") def __str__(self): return self.title def get_embed_link(self): return self.source_url.replace("open.spotify.com/", "open.spotify.com/embed/") if self.source_site == SourceSiteEnum.SPOTIFY.value else None def get_absolute_url(self): return reverse("music:retrieve_album", args=[self.id]) def get_tags_manager(self): return self.album_tags @property def verbose_category_name(self): return _("专辑") class Song(Entity): ''' Song(track) entity, can point to entity Album ''' title = models.CharField(_("标题"), max_length=500) release_date = models.DateField(_('发行日期'), auto_now=False, auto_now_add=False, null=True, blank=True) isrc = models.CharField(_("ISRC"), blank=True, max_length=15, db_index=True, default='') # duration in ms duration = models.PositiveIntegerField(_("时长"), null=True, blank=True) cover = models.ImageField( _("封面"), upload_to=song_cover_path, default=settings.DEFAULT_SONG_IMAGE, blank=True) artist = postgres.ArrayField( models.CharField(blank=True, default='', max_length=100), null=True, blank=True, default=list, verbose_name=_("艺术家") ) genre = models.CharField(_("流派"), blank=True, default='', max_length=100) album = models.ForeignKey( Album, models.SET_NULL, "album_songs", null=True, blank=True, verbose_name=_("所属专辑")) def __str__(self): return self.title def get_embed_link(self): return self.source_url.replace("open.spotify.com/", "open.spotify.com/embed/") if self.source_site == SourceSiteEnum.SPOTIFY.value else None def get_absolute_url(self): return reverse("music:retrieve_song", args=[self.id]) def get_tags_manager(self): return self.song_tags @property def verbose_category_name(self): return _("单曲") class SongMark(Mark): song = models.ForeignKey( Song, on_delete=models.CASCADE, related_name='song_marks', null=True) class Meta: constraints = [ models.UniqueConstraint( fields=['owner', 'song'], name='unique_song_mark') ] class SongReview(Review): song = models.ForeignKey( Song, on_delete=models.CASCADE, related_name='song_reviews', null=True) class Meta: constraints = [ models.UniqueConstraint( fields=['owner', 'song'], name='unique_song_review') ] class SongTag(Tag): song = models.ForeignKey( Song, on_delete=models.CASCADE, related_name='song_tags', null=True) mark = models.ForeignKey( SongMark, on_delete=models.CASCADE, related_name='songmark_tags', null=True) class Meta: constraints = [ models.UniqueConstraint( fields=['content', 'mark'], name="unique_songmark_tag") ] class AlbumMark(Mark): album = models.ForeignKey( Album, on_delete=models.CASCADE, related_name='album_marks', null=True) class Meta: constraints = [ models.UniqueConstraint( fields=['owner', 'album'], name='unique_album_mark') ] class AlbumReview(Review): album = models.ForeignKey( Album, on_delete=models.CASCADE, related_name='album_reviews', null=True) class Meta: constraints = [ models.UniqueConstraint( fields=['owner', 'album'], name='unique_album_review') ] class AlbumTag(Tag): album = models.ForeignKey( Album, on_delete=models.CASCADE, related_name='album_tags', null=True) mark = models.ForeignKey( AlbumMark, on_delete=models.CASCADE, related_name='albummark_tags', null=True) class Meta: constraints = [ models.UniqueConstraint( fields=['content', 'mark'], name="unique_albummark_tag") ]