add database and marshmallow entities to app

app/__init__.py

@@ -3,8 +3,54 @@ import time
 import json
 from app.local_db import LocalDB
 
+from marshmallow import Schema, fields
+from flask_sqlalchemy import SQLAlchemy
+
 app = Flask(__name__)
-ldb = LocalDB()
+app.config.from_pyfile('config.py', silent=True)
+
+db = SQLAlchemy(app)
+
+class UserModel(db.Model):
+    __tablename__ = "user"
+    uuid = db.Column(db.String(32), unique=True, primary_key=True, nullable=False)
+    name = db.Column(db.String(64), nullable=False)
+
+    records = db.relationship('RecordSchema', backref='user.uuid')
+
+class CategoryModel(db.Model):
+    __tablename__ = "category"
+    uuid = db.Column(db.String(32), unique=True, primary_key=True, nullable=False)
+    name = db.Column(db.String(64), nullable=False)
+
+    records = db.relationship('RecordSchema', backref='category.uuid')
+
+class RecordSchema(db.Model):
+    __tablename__ = "record"
+    uuid = db.Column(db.String(32), primary_key=True, nullable=False)
+    user_uuid = db.Column(db.String(32), db.ForeignKey('user.uuid'))
+    cat_uuid = db.Column(db.String(32), db.ForeignKey('category.uuid'))
+    date = db.Column(db.Date)
+    amount = db.Column(db.Integer)
+
+class UserSchema(Schema):
+    uuid = fields.Str()
+    name = fields.Str()
+
+class CategorySchema(Schema):
+    uuid = fields.Str()
+    name = fields.Str()
+
+class RecordSchema(Schema):
+    uuid = fields.Str()
+    user_uuid = fields.Str()
+    cat_uuid = fields.Str()
+    date = fields.Date()
+    amount = fields.Integer()
+
+# "migration"
+with app.app_context():
+    db.create_all()
 
 @app.route("/healthcheck")
 def ep_healthcheck():

app/config.py

@@ -0,0 +1,7 @@
+import os
+
+PROPAGATE_EXCEPTIONS = True
+SQLALCHEMY_DATABASE_URI = f'postgresql://{os.environ["POSTGRES_USER"]}:{os.environ["POSTGRES_PASSWORD"]}@db:5432/accountance'
+SQLALCHEMY_TRACK_MODIFICATIONS = False
+API_TITLE = "Finance REST API"
+API_VERSION = 'v1'