refactor(backend): ♻️ cleanup HTTP service classes and remove database singleton (#687)

* refactor(backend): ♻️ cleanup duplicate code in http services

* refactor(backend): ♻️ refactor database away from singleton design

removed the database single and instead injected the session into a new Database class that is created during each request life-cycle. Now sessions no longer need to be passed into each method on the database

All tests pass, but there are likely some hidden breaking changes that were not discovered.

* fix venv

* disable venv cache

* fix install script

* bump poetry version

* postgres fixes

* revert install

* fix db initialization for postgres

* add postgres to docker

* refactor(backend): ♻️ cleanup unused and duplicate code in http services

* refactor(backend): remove sessions from arguments

* refactor(backend): ♻️ convert units and ingredients to use http service class

* test(backend): ✅ add unit and food tests

* lint

* update tags

* re-enable cache

* fix missing fraction in db

* fix lint

Co-authored-by: hay-kot <hay-kot@pm.me>

mealie/routes/recipe/image_and_assets.py

@@ -5,7 +5,7 @@ from fastapi.datastructures import UploadFile
 from slugify import slugify
 from sqlalchemy.orm.session import Session
 
-from mealie.db.database import db
+from mealie.db.database import get_database
 from mealie.db.db_setup import generate_session
 from mealie.routes.routers import UserAPIRouter
 from mealie.schema.recipe import CreateRecipeByURL, Recipe, RecipeAsset
@@ -32,8 +32,9 @@ def update_recipe_image(
     session: Session = Depends(generate_session),
 ):
     """ Removes an existing image and replaces it with the incoming file. """
+    db = get_database(session)
     write_image(slug, image, extension)
-    new_version = db.recipes.update_image(session, slug, extension)
+    new_version = db.recipes.update_image(slug, extension)
 
     return {"image": new_version}
 
@@ -58,7 +59,9 @@ def upload_recipe_asset(
     if not dest.is_file():
         raise HTTPException(status.HTTP_500_INTERNAL_SERVER_ERROR)
 
-    recipe: Recipe = db.recipes.get(session, slug)
+    db = get_database(session)
+
+    recipe: Recipe = db.recipes.get(slug)
     recipe.assets.append(asset_in)
-    db.recipes.update(session, slug, recipe.dict())
+    db.recipes.update(slug, recipe.dict())
     return asset_in