FitTrackee/fittrackee/application/models.py

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from typing import Dict
from fittrackee import db
from flask import current_app
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from sqlalchemy.engine.base import Connection
from sqlalchemy.event import listens_for
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from sqlalchemy.ext.declarative import DeclarativeMeta
from sqlalchemy.orm.mapper import Mapper
from sqlalchemy.orm.session import Session
from ..users.models import User
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BaseModel: DeclarativeMeta = db.Model
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class AppConfig(BaseModel):
__tablename__ = 'app_config'
id = db.Column(db.Integer, primary_key=True, autoincrement=True)
max_users = db.Column(db.Integer, default=0, nullable=False)
gpx_limit_import = db.Column(db.Integer, default=10, nullable=False)
max_single_file_size = db.Column(
db.Integer, default=1048576, nullable=False
)
max_zip_file_size = db.Column(db.Integer, default=10485760, nullable=False)
@property
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def is_registration_enabled(self) -> bool:
nb_users = User.query.count()
return self.max_users == 0 or nb_users < self.max_users
@property
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def map_attribution(self) -> str:
return current_app.config['TILE_SERVER']['ATTRIBUTION']
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def serialize(self) -> Dict:
return {
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'gpx_limit_import': self.gpx_limit_import,
'is_registration_enabled': self.is_registration_enabled,
'max_single_file_size': self.max_single_file_size,
'max_zip_file_size': self.max_zip_file_size,
'max_users': self.max_users,
'map_attribution': self.map_attribution,
}
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def update_app_config() -> None:
config = AppConfig.query.first()
if config:
current_app.config[
'is_registration_enabled'
] = config.is_registration_enabled
@listens_for(User, 'after_insert')
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def on_user_insert(mapper: Mapper, connection: Connection, user: User) -> None:
@listens_for(db.Session, 'after_flush', once=True)
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def receive_after_flush(session: Session, context: Connection) -> None:
update_app_config()
@listens_for(User, 'after_delete')
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def on_user_delete(
mapper: Mapper, connection: Connection, old_user: User
) -> None:
@listens_for(db.Session, 'after_flush', once=True)
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def receive_after_flush(session: Session, context: Connection) -> None:
update_app_config()