From cd52ceb474dc2a3d1dc5c333889beae19d61300b Mon Sep 17 00:00:00 2001
From: "xuanyi.wang" <xuanyi.wang@gtsplab.com>
Date: Wed, 24 May 2023 22:34:11 +0200
Subject: [PATCH] Upload files to ''

---
 SQLAlchemy.py | 182 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 182 insertions(+)
 create mode 100644 SQLAlchemy.py

diff --git a/SQLAlchemy.py b/SQLAlchemy.py
new file mode 100644
index 0000000..256658c
--- /dev/null
+++ b/SQLAlchemy.py
@@ -0,0 +1,182 @@
+#!/usr/bin/env python
+# coding: utf-8
+
+# In[ ]:
+
+
+from sqlalchemy import create_engine, Column, Integer, String, Float, DateTime, ForeignKey
+from sqlalchemy.orm import sessionmaker, relationship
+from sqlalchemy.ext.declarative import declarative_base
+
+
+# In[ ]:
+
+
+# Create a base class for declarative models
+Base = declarative_base()
+
+class Product(Base):
+    __tablename__ = 'product'
+    id = Column(Integer, primary_key=True)
+    name = Column(String)
+    SKU_PLU_UPC_number = Column(String)
+    price_histories = relationship("PriceHistory", back_populates="product")
+
+class Retailer(Base):
+    __tablename__ = 'retailer'
+    id = Column(Integer, primary_key=True)
+    name = Column(String)
+    products = relationship("Product", secondary="retailer_product")
+
+class Price(Base):
+    __tablename__ = 'price'
+    id = Column(Integer, primary_key=True)
+    MOQ = Column(Integer)
+    price = Column(Float)
+
+class ScraperJob(Base):
+    __tablename__ = 'scraper_job'
+    id = Column(Integer, primary_key=True)
+    start_time = Column(DateTime)
+    end_time = Column(DateTime)
+    parameters = Column(String)
+    statistics = Column(String)
+
+class PriceHistory(Base):
+    __tablename__ = 'price_history'
+    id = Column(Integer, primary_key=True)
+    location = Column(String)
+    zip_code = Column(Integer)
+    city_name = Column(String)
+    price_at_time = Column(DateTime)
+    price = Column(Float)
+    scraper_job_id = Column(Integer, ForeignKey('scraper_job.id'))
+    product_id = Column(Integer, ForeignKey('product.id'))
+    product = relationship("Product", back_populates="price_histories")
+    scraper_job = relationship("ScraperJob")
+
+class User(Base):
+    __tablename__ = 'user'
+    id = Column(Integer, primary_key=True)
+    username = Column(String)
+    credentials = Column(String)
+    creation_date = Column(DateTime)
+    modification_date = Column(DateTime)
+
+class RetailerProduct(Base):
+    __tablename__ = 'retailer_product'
+    retailer_id = Column(Integer, ForeignKey('retailer.id'), primary_key=True)
+    product_id = Column(Integer, ForeignKey('product.id'), primary_key=True)
+
+
+# In[ ]:
+
+
+# Create the database engine
+engine = create_engine('sqlite:///user_database.db')
+Base.metadata.create_all(engine)
+
+
+# In[ ]:
+
+
+# Create a session factory
+Session = sessionmaker(bind=engine)
+session = Session()
+
+
+# In[ ]:
+
+
+import sys
+
+# Create a command-line tool that parses sys.argv to allow a user to create/edit/delete user objects.
+
+if len(sys.argv) < 2:
+    print("Usage: python script.py [create|edit|delete] [username] [credentials]")
+    sys.exit(1)
+
+command = sys.argv[1]
+
+if command == "create":
+    if len(sys.argv) < 4:
+        print("Usage: python script.py create [username] [credentials]")
+        sys.exit(1)
+    
+    username = sys.argv[2]
+    credentials = sys.argv[3]
+
+    # Create a new user object
+    new_user = User(username=username, credentials=credentials)
+    session.add(new_user)
+    session.commit()
+    print("User created successfully!")
+
+elif command == "edit":
+    if len(sys.argv) < 4:
+        print("Usage: python script.py edit [username] [new_credentials]")
+        sys.exit(1)
+
+    username = sys.argv[2]
+    new_credentials = sys.argv[3]
+
+    # Find the user object
+    user = session.query(User).filter_by(username=username).first()
+
+    if user:
+        # Update user credentials
+        user.credentials = new_credentials
+        session.commit()
+        print("User edited successfully!")
+    else:
+        print("User not found!")
+
+elif command == "delete":
+    if len(sys.argv) < 3:
+        print("Usage: python script.py delete [username]")
+        sys.exit(1)
+
+    username = sys.argv[2]
+
+    # Find the user object
+    user = session.query(User).filter_by(username=username).first()
+
+    if user:
+        # Delete the user object
+        session.delete(user)
+        session.commit()
+        print("User deleted successfully!")
+    else:
+        print("User not found!")
+
+else:
+    print("Invalid command!")
+
+
+# In[ ]:
+
+
+from flask import Flask, render_template
+from sqlalchemy import create_engine
+from sqlalchemy.orm import sessionmaker
+
+
+# In[ ]:
+
+
+app = Flask(__name__)
+
+# Create a database connection
+engine = create_engine('sqlite:///user_database.db')
+Session = sessionmaker(bind=engine)
+session = Session()
+
+@app.route('/')
+def home():
+    # Get all user objects
+    users = session.query(User).all()
+    return render_template('index.html', users=users)
+
+if __name__ == '__main__':
+    app.run()
+