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

def default_datetime():
  now = timezone.now()
  return now

class SourceDataBase(models.Model):
  host = models.CharField(max_length=32)
  port = models.IntegerField()
  username = models.CharField(max_length=32)
  password = models.CharField(max_length=256)
  database = models.CharField(max_length=32)
  base_alias = models.CharField(max_length=32)
  creator = models.ForeignKey(User, on_delete=models.CASCADE)
  source_id = models.CharField(max_length=64, primary_key=True)
  is_private = models.BooleanField(default=True)
  status = models.IntegerField(default=1)
  created_at = models.DateTimeField(db_index=True, default=default_datetime)
  updated_at = models.DateTimeField(db_index=True, null=False)

class SourceDataTable(models.Model):
  database = models.ForeignKey(SourceDataBase, on_delete=models.CASCADE)
  table = models.CharField(max_length=256)
  table_alias = models.CharField(max_length=256)
  status = models.IntegerField(default=1)
  creator = models.ForeignKey(User, on_delete=models.CASCADE)
  id = models.CharField(max_length=64, primary_key=True)
  created_at = models.DateTimeField(db_index=True, default=default_datetime)
  updated_at = models.DateTimeField(db_index=True, null=False)

# Create your models here.
class Chart(models.Model):
  chart_id = models.CharField(max_length=64, primary_key=True)
  chart_name = models.CharField(max_length=128)
  source_id = models.ForeignKey(SourceDataBase, on_delete=models.CASCADE)
  desc = models.CharField(max_length=512, null=True)
  content = models.TextField()
  is_private = models.BooleanField()
  status = models.IntegerField()
  creator = models.ForeignKey(User, on_delete=models.CASCADE)
  created_at = models.DateTimeField(db_index=True, default=default_datetime)
  updated_at = models.DateTimeField(db_index=True, null=False)

class Dashboard(models.Model):
  dashboard_id = models.CharField(max_length=64, primary_key=True)
  name = models.CharField(max_length=128)
  desc = models.CharField(max_length=512, null=True)
  content = models.TextField()
  is_private = models.BooleanField()
  status = models.IntegerField()
  creator = models.ForeignKey(User, on_delete=models.CASCADE)
  created_at = models.DateTimeField(db_index=True, default=default_datetime)
  updated_at = models.DateTimeField(db_index=True, null=False)

class ChartBoardMap(models.Model):
  chart = models.ForeignKey(Chart, on_delete=models.CASCADE)
  dashboard = models.ForeignKey(Dashboard, on_delete=models.CASCADE)
  id = models.CharField(max_length=64, primary_key=True)
  created_at = models.DateTimeField(db_index=True, default=default_datetime)
  updated_at = models.DateTimeField(db_index=True, null=False)

class BoardOrder(models.Model):
  creator = models.ForeignKey(User, on_delete=models.CASCADE)
  order = models.TextField()
  id = models.CharField(max_length=64, primary_key=True)
  created_at = models.DateTimeField(db_index=True, default=default_datetime)
  updated_at = models.DateTimeField(db_index=True, null=False)