migrate post user and get users api

.gitignore

@@ -1 +1,2 @@
 __pycache__/
+*.env

README.md

@@ -13,3 +13,7 @@ docker-compose up
 ```
 
 That should be enough to get the server up and running.
+
+## Lab3 specifics
+
+Variant for functionality extension: 27 % 3 = 0 => Income accountance

app/__init__.py

@@ -1,10 +1,61 @@
-from flask import Flask, request
+from flask import Flask, request, jsonify
 import time
 import json
-from app.local_db import LocalDB
+import uuid
+
+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)
+
+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)
+
+class RecordModel(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()
+
+user_schema = UserSchema()
+users_schema = UserSchema(many = True)
+
+category_schema = CategorySchema()
+categories_schema = CategorySchema(many = True)
+
+record_schema = RecordSchema()
+records_schema = RecordSchema(many = True)
+
+# "migration"
+with app.app_context():
+    db.create_all()
 
 @app.route("/healthcheck")
 def ep_healthcheck():
@@ -15,12 +66,12 @@ def ep_healthcheck():
 
 @app.route("/reset_users_because_postman_is_dumb_like_that")
 def ep_reset():
-    ldb.reset()
     return {}
 
 @app.route("/users", methods = ["GET"])
 def ep_users_get():
-    return ldb.get_users()
+    result = db.session.query(UserModel).all()
+    return users_schema.dumps(result)
 
 @app.route("/user/<user_id>", methods = ["GET"])
 def ep_user_get(user_id):
@@ -35,16 +86,30 @@ def ep_user_get(user_id):
 def ep_user_post():
     body = request.json
 
-    if 'name' in body:
+    if not body:
-        r = ldb.add_user(body['name'])
-
-        if 'uuid' in r:
-            return r
-        else:
-            return r, 403
-    else:
         return {}, 403
 
+    if 'uuid' in body:
+        return {}, 403
+
+    body.update({'uuid': uuid.uuid4().hex})
+
+    try:
+        _ = user_schema.load(body)
+    except ValidationError as e:
+        return {}, 403
+
+    u = UserModel(**body)
+
+    try:
+        db.session.add(u)
+        db.session.commit()
+    except Exception as e:
+        db.session.rollback()
+        return {}, 403
+
+    return jsonify(user_schema.load(body)), 200
+
 @app.route("/user/<user_id>", methods = ["DELETE"])
 def ep_user_delete(user_id):
     r = ldb.del_user(user_id)

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'

docker-compose.yaml

@@ -12,3 +12,13 @@ services:
       - "12402:12402"
     volumes:
       - ./app:/app/app
+    env_file:
+      - db.env
+    depends_on:
+      - db
+
+  db:
+    restart: unless-stopped
+    image: postgres:17.2-alpine3.21
+    env_file:
+      - db.env

requirements.txt

@@ -1,7 +1,20 @@
+alembic==1.14.0
+apispec==6.8.0
 blinker==1.8.2
 click==8.1.7
 Flask==3.0.3
+Flask-Migrate==4.0.7
+flask-smorest==0.45.0
+Flask-SQLAlchemy==3.1.1
+greenlet==3.1.1
 itsdangerous==2.2.0
 Jinja2==3.1.4
+Mako==1.3.8
 MarkupSafe==2.1.5
+marshmallow==3.23.2
+packaging==24.2
+psycopg2-binary==2.9.10
+SQLAlchemy==2.0.36
+typing_extensions==4.12.2
+webargs==8.6.0
 Werkzeug==3.0.4