from datetime import timedelta

from django.contrib.auth.models import User
from django.db import models
from django.utils import timezone

from Main.models import Task


class Progress(models.Model):
    user = models.ForeignKey(User, on_delete=models.CASCADE)
    task = models.ForeignKey(Task, on_delete=models.CASCADE)
    start_time = models.DateTimeField(default=timezone.now)
    finished_time = models.DateTimeField(null=True)
    score = models.IntegerField(default=0)
    finished = models.BooleanField(default=False)

    @property
    def time(self):
        if not self.finished:
            self.finished_time = timezone.now()
        seconds = int((self.finished_time - self.start_time).total_seconds())
        hours = seconds // 3600
        seconds -= hours * 3600
        minutes = seconds // 60
        seconds -= minutes * 60
        return f"{hours}:{minutes}:{seconds}"

    def increment_rating(self):
        if self.task.creator == self.user:
            return
        delta = timedelta(minutes=self.task.time_estimation)
        self.score = int(delta / self.time * 100)
        self.save()
        self.user.userinfo.rating += self.score
        self.user.userinfo.save()

    @staticmethod
    def by_solution(solution):
        return Progress.objects.get(task=solution.task, user=solution.user)