# Create your models here.
import uuid

from django.db import models


class LearnBlock:
    id = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False)
    internal_name = models.CharField(max_length=255)
    title = models.CharField(max_length=255)


class LearnPath(LearnBlock):

    def __str__(self):
        return f"{self.title}"


class Topic(LearnBlock):
    learn_path = models.ForeignKey(LearnPath, on_delete=models.CASCADE)
    is_visible = models.BooleanField(default=True)

    def __str__(self):
        return f"{self.title}"


class Circle(LearnBlock):
    topic = models.ForeignKey(Topic, on_delete=models.CASCADE)

    description = models.TextField(default="")

    def __str__(self):
        return f"{self.title}"


class LearnSequence(LearnBlock):
    circle = models.ForeignKey(Circle, on_delete=models.CASCADE)

    def __str__(self):
        return f"{self.title}"


class LernUnit(LearnBlock):
    learn_sequence = models.ForeignKey(LearnSequence, on_delete=models.CASCADE)

    def __str__(self):
        return f"{self.title}"