[UPD] Added LibraryController

app/api/actions/create_engine.py

@@ -0,0 +1,18 @@
+from ...db.config.config import get_engine_configuration
+from sqlalchemy import create_engine as sqlalchemy_create_engine
+from functools import cache
+from sqlalchemy.orm import sessionmaker
+
+
+import logging
+logger = logging.getLogger(__name__)
+
+@cache
+def create_engine(*, engine_string=None, echo=None):
+    logger.debug(f"create_engine {engine_string}")
+    if engine_string is None:
+        engine_string, echo = get_engine_configuration()
+    engine = sqlalchemy_create_engine(engine_string, echo=echo=="true", future=True) # TODO
+    Session = sessionmaker(engine)
+    session = Session()
+    return engine, session

app/api/cruds/base/create.py

@@ -1,10 +1,10 @@
 from sqlalchemy.orm import Session
-from ....schema.library.library import Library
+from ....schema.library.base import Base
 
 import logging
 logger = logging.getLogger(__name__)
 
-def create(session:Session, library:Library):
+def create(session:Session, library:Base):
     logger.debug("Add Library")
     session.add(library)
     logger.debug("Added Library")

app/api/cruds/base/delete.py

@@ -0,0 +1,7 @@
+from sqlalchemy.orm import Session
+
+from ....schema.library.base import Base
+
+def delete(session:Session, library:Base):
+    session.delete(library)
+    session.commit()

app/api/cruds/base/read.py

@@ -0,0 +1,8 @@
+from sqlalchemy.orm import Session
+from sqlalchemy import select
+
+from ....schema.library.base import Base
+
+def read(session:Session, _id:int, obj:Base):
+    stmt = select(obj).where(obj.id == _id)
+    return session.scalars(stmt).one()

app/api/cruds/base/update.py

@@ -0,0 +1,6 @@
+from sqlalchemy.orm import Session
+
+from ....schema.library.base import Base
+
+def update(session:Session, library:Base):
+    session.commit()

app/api/cruds/library/delete.py

@@ -1,7 +0,0 @@
-from sqlalchemy.orm import Session
-
-from ....schema.library.library import Library
-
-def delete(session:Session, library:Library):
-    session.delete(library)
-    session.commit()

app/api/cruds/library/read.py

@@ -1,8 +0,0 @@
-from sqlalchemy.orm import Session
-from sqlalchemy import select
-
-from ....schema.library.library import Library
-
-def read(session:Session, _id:int):
-    stmt = select(Library).where(Library.id == _id)
-    return session.scalars(stmt).one()

app/api/cruds/library/update.py

@@ -1,6 +0,0 @@
-from sqlalchemy.orm import Session
-
-from ....schema.library.library import Library
-
-def update(session:Session, library:Library):
-    session.commit()

app/controller/__init__.py

@@ -0,0 +1,60 @@
+from sqlalchemy import create_engine
+from sqlalchemy.orm import sessionmaker
+
+from app.api.cruds.base import create, read, update, delete
+from app.schema.library import Library
+from ..db.config.config import get_engine_configuration
+
+import logging
+logging.basicConfig(level=logging.DEBUG)
+logger = logging.getLogger(__name__)
+
+class LibraryController:
+    def __init__(self, library_id=None, *, engine_string=None, echo=False, engine=None):
+        if engine_string is None:
+            engine_string, echo = get_engine_configuration()
+        if engine is None:
+            self._engine = create_engine(engine_string, echo=echo=="true", future=True)
+        else:
+            self._engine = engine
+        self._Session = sessionmaker(bind=self.engine)
+        self._library = None
+        if library_id is not None:
+            self.read(library_id)
+
+    @property
+    def data(self):
+        return self._library
+
+    @property
+    def engine(self):
+        return self._engine
+    
+    @property
+    def Session(self):
+        return self._Session
+    
+    @property
+    def session(self):
+        return self.Session()
+    
+    def create(self, library:Library):
+        with self.session as session:
+            self._library = create(session, library)
+        return self
+    
+    def read(self, _id):
+        with self.session as session:
+            self._library = read(session, _id, Library)
+        return self
+        
+    def update(self):
+        with self.session as session:
+            session.commit()
+
+    def delete(self):
+        with self.session as session:
+            delete(session, self)
+            del(self)
+
+    

app/schema/library/library.py

@@ -30,4 +30,4 @@ class Library(Base):
     )
 
     def __repr__(self) -> str:
-        return f"Library(id={self.id!r}, name={self.name!r}, notes={self.notes!r}"
+        return f"Library(id={self.id!r}, name={self.name!r}, notes={self.notes!r})"