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app.py
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app.py
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#!/usr/bin/python3
import os
import json
# flask
from flask import Flask, render_template, url_for
from flask import request, redirect, flash, jsonify
# flask_login
from flask_login import (
LoginManager,
current_user,
login_required,
login_user,
logout_user,
)
from oauthlib.oauth2 import WebApplicationClient
import requests
# sqlalchemy
from sqlalchemy import create_engine
from sqlalchemy.orm import sessionmaker
from database_setup import Base, Category, Item, User
app = Flask(__name__)
engine = create_engine('sqlite:///catalog.db',
connect_args={'check_same_thread': False})
Base.metadata.bind = engine
DBSession = sessionmaker(bind=engine)
session = DBSession()
# Configuration for google login
GOOGLE_CLIENT_ID = (
"270506281277-lnker6mn10m0u3u17oaqunc4l0h57l9h.apps.googleusercontent.com")
GOOGLE_CLIENT_SECRET = "J0lSHHPwfKYYgJ6Dcl7nFO-5"
GOOGLE_DISCOVERY_URL = (
"https://accounts.google.com/.well-known/openid-configuration"
)
# OAuth 2 client setup
client = WebApplicationClient(GOOGLE_CLIENT_ID)
# User session management setup
# https://flask-login.readthedocs.io/en/latest
login_manager = LoginManager()
login_manager.init_app(app)
# Flask-Login helper to retrieve a user from our db
@login_manager.user_loader
def load_user(user_id):
return session.query(User).filter_by(id=user_id).one()
# retrieving Googles provider configuration
def get_google_provider_cfg():
return requests.get(GOOGLE_DISCOVERY_URL).json()
# login page
@app.route("/login")
def login():
# Find out what URL to hit for Google login
google_provider_cfg = get_google_provider_cfg()
authorization_endpoint = google_provider_cfg["authorization_endpoint"]
# Use library to construct the request for Google login and provide
# scopes that let you retrieve user's profile from Google
request_uri = client.prepare_request_uri(
authorization_endpoint,
redirect_uri=request.base_url + "/callback",
scope=["openid", "email", "profile"],
)
return redirect(request_uri)
# callback page
@app.route("/login/callback", methods=["GET", "POST"])
def callback():
# Get authorization code Google sent back to you
code = request.args.get("code")
# Find out what URL to hit to get tokens that allow you to ask for
# things on behalf of a user
google_provider_cfg = get_google_provider_cfg()
token_endpoint = google_provider_cfg["token_endpoint"]
# Prepare and send a request to get tokens! Yay tokens!
token_url, headers, body = client.prepare_token_request(
token_endpoint,
authorization_response=request.url,
redirect_url=request.base_url,
code=code
)
token_response = requests.post(
token_url,
headers=headers,
data=body,
auth=(GOOGLE_CLIENT_ID, GOOGLE_CLIENT_SECRET),
)
# Parse the tokens!
client.parse_request_body_response(json.dumps(token_response.json()))
# Now that you have tokens (yay) let's find and hit the URL
# from Google that gives you the user's profile information,
# including their Google profile image and email
userinfo_endpoint = google_provider_cfg["userinfo_endpoint"]
uri, headers, body = client.add_token(userinfo_endpoint)
userinfo_response = requests.get(uri, headers=headers, data=body)
# You want to make sure their email is verified.
# The user authenticated with Google, authorized your
# app, and now you've verified their email through Google!
print(userinfo_response.json())
if userinfo_response.json().get("email_verified"):
unique_id = userinfo_response.json()["sub"]
users_email = userinfo_response.json()["email"]
print(users_email)
picture = userinfo_response.json()["picture"]
users_name = userinfo_response.json()["given_name"]
print(users_name)
else:
return "User email not available or not verified by Google.", 400
# Create a user in your db with the information provided
# by Google
find_user = session.query(User).filter_by(email=users_email).all()
# Doesn't exist? Add it to the database.
if not find_user:
user = User(name=users_name, email=users_email)
session.add(user)
session.commit()
# Begin user session by logging the user in
login_user(user)
else:
# Begin user session by logging the user in
user = session.query(User).filter_by(email=users_email).one()
login_user(user)
print(current_user.is_authenticated)
# Send user back to homepage
return redirect(url_for("homepage"))
# logout a user
@app.route("/logout")
@login_required
def logout():
logout_user()
return redirect(url_for("homepage"))
# JSON Endpoints
@app.route("/categorys/json")
def json_categorys():
cats = session.query(Category).all()
return jsonify(Category=[c.serialize for c in cats])
@app.route("/items/json")
def json_items():
cats = session.query(Item).all()
return jsonify(Item=[c.serialize for c in cats])
@app.route("/catalog/<string:category>/json")
def json_items_for_a_category(category):
zcategory = session.query(Category).filter_by(name=category).one()
cats = session.query(Item).filter_by(cat_id=zcategory.id).all()
return jsonify(Item=[c.serialize for c in cats])
@app.route("/catalog/<string:category>/<string:item>/json")
def json_for_single_item(category, item):
zcategory = session.query(Category).filter_by(name=category).one()
item = session.query(Item).filter_by(cat_id=zcategory.id, title=item).one()
return jsonify(Item=item.serialize)
# homepage route
@app.route("/")
@app.route("/catalog")
def homepage():
allcategories = session.query(Category).all()
return render_template("homepage.html", categories=allcategories)
# Add a new Category
@app.route("/catalog/newcategory", methods=["GET", "POST"])
@login_required
def addNewCategory():
if request.method == "GET":
return render_template("newcategory.html")
if request.method == "POST":
check_category = session.query(Category).filter_by(
name=request.form["name"]).all()
if check_category:
flash("Category already exits!")
return redirect(url_for("homepage"))
newcategory = Category(name=request.form["name"],
user_id=current_user.id)
session.add(newcategory)
session.commit()
return redirect(url_for("homepage"))
# category page
@app.route("/catalog/<string:name>/items")
def showCategoryItems(name):
category = session.query(Category).filter_by(name=name).one()
items = session.query(Item).filter_by(category=category).all()
return render_template("showcategory.html", items=items, category=category)
# Edit a category
@app.route("/catalog/<string:name>/edit", methods=["GET", "POST"])
@login_required
def editCategory(name):
category = session.query(Category).filter_by(name=name).one()
if request.method == "GET":
return render_template("editcategory.html", category=category)
if request.method == "POST" and category.user_id == current_user.id:
category.name = request.form["name"]
session.add(category)
session.commit()
return redirect(url_for("showCategoryItems", name=category.name))
else:
return "you don't own this category to edit it!", 400
# Delete a category
@app.route("/catalog/<string:name>/delete", methods=["GET", "POST"])
@login_required
def deleteCategory(name):
category = session.query(Category).filter_by(name=name).one()
if request.method == "GET":
return render_template("deletecategory.html", category=category)
if request.method == "POST" and category.user_id == current_user.id:
session.delete(category)
session.commit()
return redirect(url_for("homepage"))
else:
return "you don't own this category to edit it!", 400
# add item to a category
@app.route("/catalog/<string:name>/additem", methods=["GET", "POST"])
@login_required
def addItem(name):
category = session.query(Category).filter_by(name=name).one()
if request.method == "GET":
return render_template("newitem.html", category=category)
if request.method == "POST":
check_item = session.query(Item).filter_by(
title=request.form["name"], cat_id=category.id).all()
if check_item:
flash("item already exits!")
return redirect(url_for("showCategoryItems", name=category.name))
newitem = Item(title=request.form["name"],
description=request.form["description"],
category=category, user_id=current_user.id)
session.add(newitem)
session.commit()
return redirect(url_for("showCategoryItems", name=category.name))
# show a certain item details from a category
@app.route("/catalog/<string:name>/<string:title>/")
def ShowItem(name, title):
category = session.query(Category).filter_by(name=name).one()
item = session.query(Item).filter_by(title=title, category=category).one()
return render_template("showitem.html", item=item, category=category)
# edit item
@app.route("/catalog/<string:name>/<string:title>/edit",
methods=["GET", "POST"])
@login_required
def editItem(name, title):
categories = session.query(Category).all()
category = session.query(Category).filter_by(name=name).one()
item = session.query(Item).filter_by(title=title, category=category).one()
if request.method == "GET":
return render_template("edititem.html", category=category,
item=item, categories=categories)
if request.method == "POST" and item.user_id == current_user.id:
if request.form["name"]:
item.title = request.form["name"]
if request.form["description"]:
item.description = request.form["description"]
if request.form["category"]:
item.cat_id = request.form["category"]
c = session.query(Category).filter_by(
id=request.form["category"]).one()
name = c.name
session.add(item)
session.commit()
return redirect(url_for("ShowItem", name=name, title=item.title))
else:
return "you don't own this item to edit it!", 400
# delete item
@app.route("/catalog/<string:name>/<string:title>/delete",
methods=["GET", "POST"])
@login_required
def deleteItem(name, title):
category = session.query(Category).filter_by(name=name).one()
item = session.query(Item).filter_by(title=title, category=category).one()
if request.method == "GET":
return render_template("deleteitem.html", category=category, item=item)
if request.method == "POST" and item.user_id == current_user.id:
session.delete(item)
session.commit()
return redirect(url_for("showCategoryItems", name=name))
else:
return "You don't own this item to delete it!", 400
if __name__ == "__main__":
app.secret_key = os.urandom(24)
app.debug = True
app.run(host="0.0.0.0", port=5000, ssl_context="adhoc")