med/media/models.py

# -*- mode: python; coding: utf-8 -*-
# Copyright (C) 2017-2019 by BDE ENS Paris-Saclay
# SPDX-License-Identifier: GPL-3.0-or-later

from django.core.validators import MinValueValidator
from django.db import models
from django.utils.translation import gettext_lazy as _

from .fields import ISBNField


class Auteur(models.Model):
    nom = models.CharField(max_length=255, unique=True)

    def __str__(self):
        return self.nom

    class Meta:
        verbose_name = _("author")
        verbose_name_plural = _("authors")
        ordering = ['nom']


class Media(models.Model):
    isbn = ISBNField(
        _('ISBN'),
        help_text=_('You may be able to scan it from a bar code.'),
        blank=True,
        null=True,
    )
    title = models.CharField(
        verbose_name=_('title'),
        max_length=255,
    )
    subtitle = models.CharField(
        verbose_name=_('subtitle'),
        max_length=255,
        blank=True,
        null=True,
    )
    external_url = models.URLField(
        verbose_name=_('external URL'),
        blank=True,
        null=True,
    )
    side_identifier = models.CharField(
        verbose_name=_('side identifier'),
        max_length=255,
    )
    authors = models.ManyToManyField(
        'Auteur',
        verbose_name=_('authors'),
    )
    number_of_pages = models.PositiveIntegerField(
        verbose_name=_('number of pages'),
        blank=True,
        null=True,
    )
    publish_date = models.DateField(
        verbose_name=_('publish date'),
        blank=True,
        null=True,
    )

    def __str__(self):
        return str(self.title) + ' - ' + str(self.subtitle) \
               + ' - ' + str(self.authors.all().first())

    class Meta:
        verbose_name = _("medium")
        verbose_name_plural = _("media")
        ordering = ['title', 'subtitle']


class Emprunt(models.Model):
    media = models.ForeignKey('Media', on_delete=models.PROTECT)
    user = models.ForeignKey('users.User', on_delete=models.PROTECT)
    date_emprunt = models.DateTimeField(help_text='%d/%m/%y %H:%M:%S')
    date_rendu = models.DateTimeField(
        help_text='%d/%m/%y %H:%M:%S',
        blank=True,
        null=True,
    )
    permanencier_emprunt = models.ForeignKey(
        'users.User',
        on_delete=models.PROTECT,
        related_name='user_permanencier_emprunt',
    )
    permanencier_rendu = models.ForeignKey(
        'users.User',
        on_delete=models.PROTECT,
        related_name='user_permanencier_rendu',
        blank=True,
        null=True,
    )

    def __str__(self):
        return str(self.media) + str(self.user)

    class Meta:
        verbose_name = _("borrowed item")
        verbose_name_plural = _("borrowed items")
        ordering = ['-date_emprunt']


class Jeu(models.Model):
    DUREE = (
        ('-1h', '-1h'),
        ('1-2h', '1-2h'),
        ('2-3h', '2-3h'),
        ('3-4h', '3-4h'),
        ('4h+', '4h+'),
    )

    nom = models.CharField(max_length=255)
    proprietaire = models.ForeignKey('users.User', on_delete=models.PROTECT)
    duree = models.CharField(choices=DUREE, max_length=255)
    nombre_joueurs_min = models.IntegerField(validators=[MinValueValidator(1)])
    nombre_joueurs_max = models.IntegerField(validators=[MinValueValidator(1)])
    comment = models.CharField(help_text="Commentaire", max_length=255,
                               blank=True, null=True)

    def __str__(self):
        return str(self.nom)

    class Meta:
        verbose_name = _("game")
        verbose_name_plural = _("games")
        ordering = ['nom']