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=32)
    table_alias = models.CharField(max_length=32)
    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)