from django.contrib.auth.models import User
from django.db import models
from django.urls import reverse


class Group(models.Model):
    name = models.CharField(verbose_name="Nom du groupe")
    owner = models.ForeignKey(
        User, on_delete=models.CASCADE, related_name="owned_group_set"
    )
    members = models.ManyToManyField(User, blank=True)

    def get_absolute_url(self):
        return reverse("group_detail", kwargs={"pk": self.pk})

    class Meta:
        unique_together = ["name", "owner"]


class MusicVideo(models.Model):
    yt_id = models.CharField(max_length=16)
    title = models.CharField(blank=True)
    date_added = models.DateTimeField(auto_now_add=True)
    owner = models.ForeignKey(User, on_delete=models.CASCADE)
    group = models.ForeignKey(Group, on_delete=models.CASCADE)
    blacklisted = models.BooleanField(default=False)

    class Meta:
        unique_together = ["yt_id", "owner", "group"]


class MusikGame(models.Model):
    group = models.ForeignKey(Group, on_delete=models.CASCADE)
    date = models.DateTimeField(auto_now_add=True)
    n = models.PositiveIntegerField(default=2, verbose_name="Nombre de musiques")
    players = models.ManyToManyField(User, verbose_name="Joueurs")

    def get_absolute_url(self):
        return reverse("game_detail", kwargs={"pk": self.pk})


class MusicGameOrder(models.Model):
    game = models.ForeignKey(MusikGame, on_delete=models.CASCADE)
    player = models.ForeignKey(User, on_delete=models.CASCADE)
    music_video = models.ForeignKey(MusicVideo, on_delete=models.CASCADE)
    order = models.PositiveIntegerField()

    class Meta:
        unique_together = [["game", "player", "music_video"], ["game", "order"]]
        ordering = ["order"]