- Check if it's part of the metadata through a function call rather than
checking `Base.metadata` in every single module.
- Make it possible to override them (mostly for doc generation logic
that needs to be able to import those classes).
- Make it possible to extend them.
The database settings could also be overridden in the configuration file
besides the command line.
We should therefore pass the path to the runtime configuration file, so
the Alembic process can initialize its configuration from the same file
and use the same settings.
If the path of the default database engine is overridden via `--workdir`
option then it won't be visible to the new `python` subprocess spawned
for Alembic.
Added Alembic environment and `run_db_migrations` logic to the entities
engine so database schema changes can be processed as soon as the
application is started.
`Mapped` has been introduced only in SQLAlchemy 1.4, while Debian stable
still ships 1.3.
Removing the type annotation doesn't come with a big cost, but it keeps
Platypush compatible with Debian stable.
Plus, `platypush.schemas.system` has now been split into multiple
submodules to avoid a single-file mega-module with all the system
schemas definitions.
No more `_value` in the JSON output instead of the `value` property.
If a column is marked as private, and there's an associated property
mapped to its public name, then we should use and serialize that value.
Workaround for the circular dependency between
`platypush.entities.bluetooth` and `platypush.plugins.bluetooth.model`.
Unentangling the circular dependency would require way too much work,
since the entity model provides several helpers and properties that
depend on the plugin's model.
The workaround in this commit is to simply push those imports down in
the methods that use them, so they won't be imported until those methods
are called, as well as removing some type annotations that depended on
those objects.