import uuid

from django.db import models

# Create your models here.
from djgeojson.fields import PointField, MultiPolygonField


class Address(models.Model):
    id = models.UUIDField('id', primary_key=True, default=uuid.uuid4)
    name = models.CharField('区域', max_length=256, null=False)
    geom = PointField()


class Station(models.Model):
    id = models.UUIDField('id', primary_key=True, default=uuid.uuid4)
    code = models.CharField('区站号', max_length=256, null=False)
    geom = PointField()


class Grid(models.Model):
    id = models.UUIDField('id', primary_key=True, default=uuid.uuid4)
    station = models.ForeignKey(Station, on_delete=models.CASCADE)
    geom = PointField()


class CountyBoundary(models.Model):
    id = models.UUIDField('id', primary_key=True, default=uuid.uuid4)
    name = models.CharField('县名', max_length=256, null=False)
    geom = MultiPolygonField()


class TownBoundary(models.Model):
    id = models.UUIDField('id', primary_key=True, default=uuid.uuid4)
    name = models.CharField('乡名', max_length=256, null=False)
    county = models.ForeignKey(CountyBoundary, on_delete=models.CASCADE)
    geom = MultiPolygonField()