config.py

#!/usr/bin/env python
# -*- coding: utf-8 -*-

import os

from app.utils import (
  get_env,
  to_bool,
)
from app.utils.num import (
  random_func,
)

app_dir = os.path.abspath(os.path.dirname(__file__))

class Config(object):
  SQLALCHEMY_DATABASE_URI = get_env('DATABASE_URL', default=f'sqlite:///{"app" or __name__}.db')#'sqlite:///:memory:'
  SQLALCHEMY_TRACK_MODIFICATIONS = False
  #SQLALCHEMY_COMMIT_ON_TEARDOWN = True

  _binds = get_env('SQLALCHEMY_BINDS', default=None)
  if _binds:
    #https://docs.sqlalchemy.org/en/13/core/exceptions.html
    #https://flask-sqlalchemy.palletsprojects.com/en/2.x/binds/
    #https://flask-migrate.readthedocs.io/en/latest/
    SQLALCHEMY_BINDS = {}
    for _ in _binds.split(','):
      __ = _.split(':', 1)
      SQLALCHEMY_BINDS.update({__[0].lower() : __[1] if __[1].rfind('://') != -1 else get_env(__[1])})
    print(SQLALCHEMY_BINDS)
  # SECURITY WARNING: don't run with debug turned on in production!
  #Default: True if ENV is 'development', or False otherwise.
  DEBUG = to_bool(get_env('DEBUG', default=os.sys.platform == 'win32' or os.name == 'nt'))

  # SECURITY WARNING: keep the secret key used in production secret!
  SECRET_KEY = get_env('SECRET_KEY', default=random_func(as_string=True, size=65))

  DEVELOPMENT = TESTING = False

  @property
  def DATABASE_URI(self):
    return SQLALCHEMY_DATABASE_URI
class DevelopementConfig(Config):
  DEVELOPMENT = True
  ENV = 'development'#dev

class TestingConfig(Config):#StagingConfig
  TESTING = DEVELOPMENT = DEBUG = True

class ProductionConfig(Config):
  TESTING = DEVELOPMENT = DEBUG = False
  ENV = 'production'