import uuid

from django.db import models
from django.urls import reverse


class List(models.Model):
    id = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False)
    owner = models.ForeignKey(
        "lyric.User",
        related_name="lists",
        blank=True,
        null=True,
        on_delete=models.CASCADE,
    )

    shared_with = models.ManyToManyField(
        "lyric.User",
        related_name="shared_lists",
        blank=True,
    )

    @property
    def name(self):
        return self.item_set.first().text

    def get_absolute_url(self):
        return reverse("view_list", args=[self.id])

class Item(models.Model):
    text = models.TextField(default="")
    list = models.ForeignKey(List, default=None, on_delete=models.CASCADE)

    class Meta:
        ordering = ("id",)
        unique_together = ("list", "text")

    def __str__(self):
        return self.text
    
class Applet(models.Model):
    slug = models.SlugField(unique=True)
    name = models.CharField(max_length=100)
    default_visible = models.BooleanField(default=True)
    grid_cols = models.PositiveSmallIntegerField(default=12)
    grid_rows = models.PositiveSmallIntegerField(default=3)

    def __str__(self):
        return self.name
    
class UserApplet(models.Model):
    user = models.ForeignKey(
        "lyric.User",
        related_name="user_applets",
        on_delete=models.CASCADE,
    )
    applet = models.ForeignKey(
        Applet,
        on_delete=models.CASCADE,
    )
    visible = models.BooleanField(default=True)

    class Meta:
        unique_together = ("user", "applet")