from django.db import models
from rbac.models import CommonModel
from django.contrib.postgres.fields import JSONField, ArrayField
# Create your models here.


class Questioncat(CommonModel):
    name = models.CharField(max_length=200, unique=True, verbose_name="名称")
    pid = models.ForeignKey("self", verbose_name="父", null=True, blank=True, on_delete=models.CASCADE, related_name="questioncatpid")
    is_subject = models.BooleanField(default=False, verbose_name="是否是学科")
    class Meta:
        verbose_name = "题库类别/学科类别"
        verbose_name_plural = verbose_name

    def __str__(self):
        return self.name
    
    @property
    def tmtotal(self):
        return self.questioncat.count()
    

class Question(CommonModel):
    type_choices = (
        (1, "单选"),
        (2, "多选"),
        (3, "判断"),
    )
    level_choices = (
        (1, "低"),
        (2, "中"),
        (3, "高"),
    )
    name = models.TextField(verbose_name="题干")
    type = models.IntegerField(default=1, choices=type_choices, verbose_name="题型")
    level = models.IntegerField(default=1, choices=level_choices, verbose_name="难度")
    questioncat = models.ForeignKey(Questioncat, blank=True, null=True, on_delete=models.CASCADE, verbose_name="所属题库", related_name="questioncat")
    options = JSONField()
    right = JSONField()
    resolution = models.TextField(verbose_name="解析")

    class Meta:
        verbose_name = "题目"
        verbose_name_plural = verbose_name

    def __str__(self):
        return self.name