from django.db import models
from django.db.models import UniqueConstraint

from vbv_lernwelt.core.models import User


class LearningContentCompletion(models.Model):
    created_at = models.DateTimeField(auto_now_add=True)
    updated_at = models.DateTimeField(auto_now=True)

    user = models.ForeignKey(User, on_delete=models.CASCADE)
    learning_content_key = models.UUIDField()
    circle_key = models.UUIDField()

    completed = models.BooleanField(default=True)
    json_data = models.JSONField(default=dict, blank=True)

    class Meta:
        constraints = [
            UniqueConstraint(
                fields=['user', 'learning_content_key', ],
                name='unique_user_learning_content_key'
            )
        ]


class LearningUnitQuestionCompletion(models.Model):
    created_at = models.DateTimeField(auto_now_add=True)
    updated_at = models.DateTimeField(auto_now=True)

    user = models.ForeignKey(User, on_delete=models.CASCADE)
    question_key = models.UUIDField()
    circle_key = models.UUIDField()

    completed = models.BooleanField(default=True)
    json_data = models.JSONField(default=dict, blank=True)

    class Meta:
        constraints = [
            UniqueConstraint(
                fields=['user', 'question_key', ],
                name='unique_user_question_key'
            )
        ]


class UserCircleCompletion(models.Model):
    created_at = models.DateTimeField(auto_now_add=True)
    updated_at = models.DateTimeField(auto_now=True)

    user = models.ForeignKey(User, on_delete=models.CASCADE)
    circle_key = models.UUIDField()

    json_data = models.JSONField(default=dict, blank=True)

    class Meta:
        constraints = [
            UniqueConstraint(fields=['user', 'circle_key'], name='unique_user_circle_completion')
        ]