from django.db import models
from django.conf import settings


class LabQuiz(models.Model):
    lab_code = models.CharField(max_length=20)
    language_code = models.CharField(max_length=10)
    content_hash = models.CharField(max_length=128)
    title = models.CharField(max_length=255)
    description = models.TextField(null=True, blank=True)
    allow_repeat_submission = models.BooleanField(default=True)
    evaluate_immediately = models.BooleanField(default=True)
    show_correct_answer = models.BooleanField(default=True)
    questions = models.JSONField(default=list)
    max_score = models.IntegerField(default=0)

    class Meta:
        db_table = "lab_quizzes"
        unique_together = ("lab_code", "language_code", "content_hash")


class LabQuizSubmission(models.Model):
    user = models.ForeignKey(
        settings.AUTH_USER_MODEL,
        on_delete=models.CASCADE,
    )
    lab_instance = models.ForeignKey(
        "labs.LabInstance",
        on_delete=models.CASCADE,
    )
    lab_quiz = models.ForeignKey(
        "labs.LabQuiz",
        on_delete=models.CASCADE,
    )
    answers = models.JSONField(default=list)
    score = models.IntegerField(default=0)
    created_at = models.DateTimeField(auto_now_add=True)
    updated_at = models.DateTimeField(auto_now=True)

    class Meta:
        db_table = "lab_quiz_submissions"