+ txt = self.title
+ astr = self.authors_str()
+ if astr:
+ txt = f"{astr} – {txt}"
+ tstr = self.translators_str()
+ if tstr:
+ txt = f"{txt} (tłum. {tstr})"
+ return txt
+
+ def get_absolute_url(self):
+ return reverse("catalogue_book", args=[self.slug])
+
+ @property
+ def wluri(self):
+ return f'https://wolnelektury.pl/katalog/lektura/{self.slug}/'
+
+ def authors_str(self):
+ return ", ".join(str(author) for author in self.authors.all())
+ authors_str.admin_order_field = 'authors__last_name'
+ authors_str.short_description = _('Author')
+
+ def translators_str(self):
+ return ", ".join(str(author) for author in self.translators.all())
+ translators_str.admin_order_field = 'translators__last_name'
+ translators_str.short_description = _('Translator')
+
+ def get_estimated_costs(self):
+ return {
+ work_type: work_type.calculate(self)
+ for work_type in WorkType.objects.all()
+ }
+
+
+class CollectionCategory(models.Model):
+ name = models.CharField(_("name"), max_length=255)
+ parent = models.ForeignKey('self', models.SET_NULL, related_name='children', null=True, blank=True, verbose_name=_("parent"))
+ notes = models.TextField(_("notes"), blank=True)
+
+ class Meta:
+ ordering = ('parent__name', 'name')
+ verbose_name = _('collection category')
+ verbose_name_plural = _('collection categories')
+
+ def __str__(self):
+ if self.parent:
+ return f"{self.parent} / {self.name}"
+ else:
+ return self.name
+
+
+class Collection(models.Model):
+ name = models.CharField(_("name"), max_length=255)
+ slug = models.SlugField(max_length=255, unique=True)
+ category = models.ForeignKey(CollectionCategory, models.SET_NULL, null=True, blank=True, verbose_name=_("category"))
+ notes = models.TextField(_("notes"), blank=True)
+
+ class Meta:
+ ordering = ('category', 'name')
+ verbose_name = _('collection')
+ verbose_name_plural = _('collections')
+
+ def __str__(self):
+ if self.category:
+ return f"{self.category} / {self.name}"
+ else:
+ return self.name
+
+ def get_estimated_costs(self):
+ costs = Counter()
+ for book in self.book_set.all():
+ for k, v in book.get_estimated_costs().items():
+ costs[k] += v or 0
+
+ for author in self.author_set.all():
+ for book in author.book_set.all():
+ for k, v in book.get_estimated_costs().items():
+ costs[k] += v or 0
+ for book in author.translated_book_set.all():
+ for k, v in book.get_estimated_costs().items():
+ costs[k] += v or 0
+ return costs
+
+
+class WorkType(models.Model):
+ name = models.CharField(_("name"), max_length=255)
+
+ class Meta:
+ ordering = ('name',)
+ verbose_name = _('work type')
+ verbose_name_plural = _('work types')
+
+ def get_rate_for(self, book):
+ for workrate in self.workrate_set.all():
+ if workrate.matches(book):
+ return workrate
+
+ def calculate(self, book):
+ workrate = self.get_rate_for(book)
+ if workrate is not None:
+ return workrate.calculate(book)
+
+
+
+class WorkRate(models.Model):
+ priority = models.IntegerField(_("priority"), default=1)
+ per_normpage = models.DecimalField(_("per normalized page"), decimal_places=2, max_digits=6, null=True, blank=True)
+ per_verse = models.DecimalField(_("per verse"), decimal_places=2, max_digits=6, null=True, blank=True)
+ work_type = models.ForeignKey(WorkType, models.CASCADE, verbose_name=_("work type"))
+ epochs = models.ManyToManyField(Epoch, blank=True, verbose_name=_("epochs"))
+ kinds = models.ManyToManyField(Kind, blank=True, verbose_name=_("kinds"))
+ genres = models.ManyToManyField(Genre, blank=True, verbose_name=_("genres"))
+ collections = models.ManyToManyField(Collection, blank=True, verbose_name=_("collections"))
+
+ class Meta:
+ ordering = ('priority',)
+ verbose_name = _('work rate')
+ verbose_name_plural = _('work rates')
+
+ def matches(self, book):
+ for category in 'epochs', 'kinds', 'genres', 'collections':
+ oneof = getattr(self, category).all()
+ if oneof:
+ if not set(oneof).intersection(
+ getattr(book, category).all()):
+ return False
+ return True
+
+ def calculate(self, book):
+ if self.per_verse:
+ if book.estimated_verses:
+ return book.estimated_verses * self.per_verse
+ elif self.per_normpage:
+ if book.estimated_chars:
+ return (decimal.Decimal(book.estimated_chars) / 1800 * self.per_normpage).quantize(decimal.Decimal('1.00'), rounding=decimal.ROUND_HALF_UP)
+