forked from rc/aircox
267 lines
8.5 KiB
Python
267 lines
8.5 KiB
Python
from enum import IntEnum
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import logging
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import os
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from django.conf import settings as conf
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from django.db import models
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from django.db.models import Q, Value as V
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from django.db.models.functions import Concat
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from django.utils import timezone as tz
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from django.utils.translation import gettext_lazy as _
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from taggit.managers import TaggableManager
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from aircox import settings
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from .program import Program
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from .episode import Episode
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logger = logging.getLogger('aircox')
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__all__ = ['Sound', 'SoundQuerySet', 'Track']
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class SoundQuerySet(models.QuerySet):
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def station(self, station=None, id=None):
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id = station.pk if id is None else id
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return self.filter(program__station__id=id)
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def episode(self, episode=None, id=None):
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id = episode.pk if id is None else id
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return self.filter(episode__id=id)
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def diffusion(self, diffusion=None, id=None):
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id = diffusion.pk if id is None else id
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return self.filter(episode__diffusion__id=id)
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def available(self):
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return self.exclude(type=Sound.TYPE_REMOVED)
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def public(self):
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""" Return sounds available as podcasts """
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return self.filter(is_public=True)
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def archive(self):
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""" Return sounds that are archives """
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return self.filter(type=Sound.TYPE_ARCHIVE)
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def path(self, paths):
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if isinstance(paths, str):
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return self.filter(file=paths.replace(conf.MEDIA_ROOT + '/', ''))
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return self.filter(file__in=(p.replace(conf.MEDIA_ROOT + '/', '')
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for p in paths))
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def playlist(self, archive=True, order_by=True):
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"""
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Return files absolute paths as a flat list (exclude sound without path).
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If `order_by` is True, order by path.
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"""
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if archive:
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self = self.archive()
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if order_by:
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self = self.order_by('file')
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return [os.path.join(conf.MEDIA_ROOT, file) for file in self.filter(file__isnull=False) \
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.values_list('file', flat=True)]
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def search(self, query):
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return self.filter(
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Q(name__icontains=query) | Q(file__icontains=query) |
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Q(program__title__icontains=query) |
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Q(episode__title__icontains=query)
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)
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class Sound(models.Model):
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"""
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A Sound is the representation of a sound file that can be either an excerpt
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or a complete archive of the related diffusion.
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"""
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TYPE_OTHER = 0x00
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TYPE_ARCHIVE = 0x01
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TYPE_EXCERPT = 0x02
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TYPE_REMOVED = 0x03
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TYPE_CHOICES = (
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(TYPE_OTHER, _('other')), (TYPE_ARCHIVE, _('archive')),
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(TYPE_EXCERPT, _('excerpt')), (TYPE_REMOVED, _('removed'))
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)
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name = models.CharField(_('name'), max_length=64)
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program = models.ForeignKey(
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Program, models.CASCADE, blank=True, # NOT NULL
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verbose_name=_('program'),
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help_text=_('program related to it'),
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db_index=True,
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)
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episode = models.ForeignKey(
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Episode, models.SET_NULL, blank=True, null=True,
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verbose_name=_('episode'),
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db_index=True,
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)
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type = models.SmallIntegerField(_('type'), choices=TYPE_CHOICES)
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position = models.PositiveSmallIntegerField(
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_('order'), default=0, help_text=_('position in the playlist'),
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)
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def _upload_to(self, filename):
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subdir = AIRCOX_SOUND_ARCHIVES_SUBDIR if self.type == self.TYPE_ARCHIVE else \
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AIRCOX_SOUND_EXCERPTS_SUBDIR
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return os.path.join(self.program.path, subdir, filename)
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file = models.FileField(
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_('file'), upload_to=_upload_to, max_length=256,
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db_index=True,
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)
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duration = models.TimeField(
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_('duration'),
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blank=True, null=True,
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help_text=_('duration of the sound'),
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)
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mtime = models.DateTimeField(
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_('modification time'),
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blank=True, null=True,
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help_text=_('last modification date and time'),
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)
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is_good_quality = models.BooleanField(
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_('good quality'), help_text=_('sound meets quality requirements'),
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blank=True, null=True
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)
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is_public = models.BooleanField(
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_('public'), help_text=_('whether it is publicly available as podcast'),
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default=False,
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)
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is_downloadable = models.BooleanField(
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_('downloadable'), help_text=_('whether it can be publicly downloaded by visitors'),
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default=False,
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)
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objects = SoundQuerySet.as_manager()
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class Meta:
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verbose_name = _('Sound')
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verbose_name_plural = _('Sounds')
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@property
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def url(self):
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return self.file and self.file.url
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def __str__(self):
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return '/'.join(self.file.path.split('/')[-3:])
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def save(self, check=True, *args, **kwargs):
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if self.episode is not None and self.program is None:
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self.program = self.episode.program
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if check:
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self.check_on_file()
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self.__check_name()
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super().save(*args, **kwargs)
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# TODO: rename get_file_mtime(self)
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def get_mtime(self):
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"""
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Get the last modification date from file
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"""
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mtime = os.stat(self.file.path).st_mtime
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mtime = tz.datetime.fromtimestamp(mtime)
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mtime = mtime.replace(microsecond=0)
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return tz.make_aware(mtime, tz.get_current_timezone())
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def file_exists(self):
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""" Return true if the file still exists. """
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return os.path.exists(self.file.path)
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def check_on_file(self):
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"""
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Check sound file info again'st self, and update informations if
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needed (do not save). Return True if there was changes.
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"""
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if not self.file_exists():
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if self.type == self.TYPE_REMOVED:
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return
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logger.info('sound %s: has been removed', self.file.name)
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self.type = self.TYPE_REMOVED
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return True
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# not anymore removed
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changed = False
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if self.type == self.TYPE_REMOVED and self.program:
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changed = True
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self.type = self.TYPE_ARCHIVE \
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if self.file.name.startswith(self.program.archives_path) else \
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self.TYPE_EXCERPT
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# check mtime -> reset quality if changed (assume file changed)
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mtime = self.get_mtime()
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if self.mtime != mtime:
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self.mtime = mtime
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self.is_good_quality = None
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logger.info('sound %s: m_time has changed. Reset quality info',
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self.file.name)
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return True
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return changed
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def __check_name(self):
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if not self.name and self.file and self.file.name:
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# FIXME: later, remove date?
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self.name = os.path.basename(self.file.name)
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self.name = os.path.splitext(self.name)[0]
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self.name = self.name.replace('_', ' ')
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def __init__(self, *args, **kwargs):
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super().__init__(*args, **kwargs)
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self.__check_name()
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class Track(models.Model):
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"""
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Track of a playlist of an object. The position can either be expressed
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as the position in the playlist or as the moment in seconds it started.
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"""
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episode = models.ForeignKey(
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Episode, models.CASCADE, blank=True, null=True,
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verbose_name=_('episode'),
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)
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sound = models.ForeignKey(
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Sound, models.CASCADE, blank=True, null=True,
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verbose_name=_('sound'),
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)
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position = models.PositiveSmallIntegerField(
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_('order'), default=0, help_text=_('position in the playlist'),
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)
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timestamp = models.PositiveSmallIntegerField(
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_('timestamp'),
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blank=True, null=True,
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help_text=_('position (in seconds)')
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)
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title = models.CharField(_('title'), max_length=128)
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artist = models.CharField(_('artist'), max_length=128)
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tags = TaggableManager(verbose_name=_('tags'), blank=True,)
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info = models.CharField(
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_('information'),
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max_length=128,
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blank=True, null=True,
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help_text=_('additional informations about this track, such as '
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'the version, if is it a remix, features, etc.'),
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)
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class Meta:
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verbose_name = _('Track')
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verbose_name_plural = _('Tracks')
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ordering = ('position',)
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def __str__(self):
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return '{self.artist} -- {self.title} -- {self.position}'.format(
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self=self)
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def save(self, *args, **kwargs):
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if (self.sound is None and self.episode is None) or \
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(self.sound is not None and self.episode is not None):
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raise ValueError('sound XOR episode is required')
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super().save(*args, **kwargs)
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