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

from offline.event.models import Event

TOPIC_CHOICES = (("11", "Plotting"),
                 ("12", "Lists and Files"),
                 ("13", "For Loops"),
                 ("14", "Strings"),
                 ("15", "Dictionaries and Piecharts"),
                 ("16", "Statistics"),
                 ("17", "Arrays and Matrices"),
                 ("18", "Solving linear equations"),
                 ("19", "Finding roots"),

                 ("21", "Basic Datatypes"),
                 ("22", "Input and Output"),
                 ("23", "Lists and Tuples"),
                 ("24", "Dictionaries"),
                 ("25", "Sets"),
                 ("26", "Conditional Statements"),
                 ("27", "Functions"),
                 )

class Profile(models.Model):
    """ A profile for quiz takers.
    """

    user = models.ForeignKey(User)
    profession = models.CharField(max_length=20,help_text="(Ex: Faculty, Student etc.)")
    affiliated_to = models.CharField(max_length=100, verbose_name="College/Company")

class QuestionBank(models.Model):
    """ A model for holding the database of questions.
    """

    quiz_num = models.CharField(max_length=2, default="00")
    topic = models.CharField(max_length=2,choices=TOPIC_CHOICES)

    description = models.TextField()
    code = models.TextField(blank=True)
    options = models.TextField(blank=True)
    time_limit = models.PositiveSmallIntegerField()
    expected_ans = models.TextField()

    def get_values(self):

        values_dict = {"quiz_num" : self.quiz_num,
                       "topic" : self.topic,
                       "description" : self.description,
                       "code" : self.code,
                       "options" : self.options,
                       "time_limit" : self.time_limit,
                       "expected_ans" : self.expected_ans,
                      }
        return values_dict

    def __unicode__(self):

        return self.description

class Answer(models.Model):
    """ A model for holding answers submitted by users.
    """

    question = models.ForeignKey(QuestionBank, related_name="%(class)s")
    submitted_ans = models.TextField()
    is_correct = models.BooleanField(default=False)

class Quiz(models.Model):
    """ A model to hold the proceeding of a quiz.
    """

    user = models.ForeignKey(User)
    event = models.ForeignKey(Event, related_name="%(class)s")
    user_ip = models.CharField(max_length=15)
    key = models.CharField(max_length=10)
    
    quiz_num = models.CharField(max_length=2)
    que_remaining = models.CharField(max_length=100)
    que_answered = models.ManyToManyField(Answer, related_name="%(class)s")