from django.db import models

from questions.models import Question
from .managers import TestManager


class Test(models.Model):
    name = models.CharField(max_length=100)
    passing_score = models.PositiveSmallIntegerField(default=0)
    # category = models.ForeignKey(
    #     "categories.Category",
    #     on_delete=models.SET_NULL,
    #     null=True,
    #     related_name="tests"
    # )
    category = models.CharField(max_length=100)
    created_by = models.ForeignKey(
        "users.User",
        null=True,
        related_name="tests",
        on_delete=models.CASCADE
    )

    objects = TestManager()

    def get_score(self, answers):
        """
        [
            {
                "question": 1,
                "answer": 1
            },
            {
                "question": 2,
                "answer": 1
            }
        ]
        """
        points = 0
        for answer in answers:
            question = self.questions.get(id=answer["question"])
            if question.answers.get(id=answer["answer"]).is_correct:
                points += question.points
        return points

    def get_maxscore(self, answers):
        """
        [
            {
                "question": 1,
                "answer": 1
            },
            {
                "question": 2,
                "answer": 1
            }
        ]
        """
        points = 0
        # for answer in answers:
        #     question = self.questions.get(id=answer["question"])
        #     points += question.points
        for question in self.questions.all():
            points += question.points
        return points

    def question_count(self):
        return Question.objects.filter(test_id=self.id).count()

    def name_and_passing_score(self):
        return {
            "name": self.name,
            "passing_score": self.passing_score
        }


class SolvedTest(models.Model):
    score = models.IntegerField(default=0)
    max = models.IntegerField(default=0)
    percentage = models.IntegerField(default=0)
    user = models.ForeignKey(
        "users.User",
        null=True,
        related_name="answers",
        on_delete=models.CASCADE
    )
    test = models.ForeignKey(
        "Test",
        null=True,
        related_name="answers",
        on_delete=models.CASCADE
    )