from django.db import models

from questions.models import Question
from users.models import User
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)
    visible = models.BooleanField(default=True)
    created_by = models.ForeignKey(
        "users.User",
        null=True,
        related_name="tests",
        on_delete=models.CASCADE
    )
    password = models.CharField(max_length=100, default="")
    completions = models.IntegerField(default=0)
    total_percentage_scored_by_users = models.IntegerField(default=0)
    total_rating = models.IntegerField(default=0)
    avg_rating = models.IntegerField(default=0)
    rates_amount = models.IntegerField(default=0)
    difficulty_label = models.IntegerField(default=0)
    avg_difficulty = models.FloatField(default=0.0)
    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):
        """
        [
            {
                "question": 1,
                "answer": 1
            },
            {
                "question": 2,
                "answer": 1
            }
        ]
        """
        points = 0
        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 get_author_name(self):
        if self.created_by:
            user = User.objects.get(email=self.created_by)
            user_fullname = user.first_name + " " + user.last_name
        else:
            user_fullname = "SOITA"
        return user_fullname

    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
    )