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app.py
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app.py
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import os, time
from cs50 import SQL
from flask import Flask, flash, jsonify, redirect, render_template, request, session, url_for
from flask_session import Session
from tempfile import mkdtemp
from werkzeug.exceptions import default_exceptions, HTTPException, InternalServerError
from werkzeug.security import check_password_hash, generate_password_hash
from helpers import apology, login_required, lookup, totals
# Configure application
app = Flask(__name__)
# Ensure templates are auto-reloaded
app.config["TEMPLATES_AUTO_RELOAD"] = True
# Ensure responses aren't cached
@app.after_request
def after_request(response):
response.headers["Cache-Control"] = "no-cache, no-store, must-revalidate"
response.headers["Expires"] = 0
response.headers["Pragma"] = "no-cache"
return response
# Configure session to use filesystem (instead of signed cookies)
app.config["SESSION_FILE_DIR"] = mkdtemp()
app.config["SESSION_PERMANENT"] = False
app.config["SESSION_TYPE"] = "filesystem"
Session(app)
# Configure CS50 Library to use SQLite database
db = SQL("sqlite:///covid19.db")
# Make sure API key is set
if not os.environ.get("API_KEY"):
raise RuntimeError("API_KEY not set")
@app.route("/")
def index():
return render_template("index.html")
@app.route("/quiz")
def quiz():
return render_template("quiz.html")
# search for covid-19 stats for given country
@app.route("/search", methods=["POST"])
@login_required
def search():
if request.method == "POST":
country = request.form.get("country")
res = lookup(country.capitalize())
total = totals()
return render_template("result.html", res=res, total=total, country=res['Country'].casefold())
return apology("Request method is not supported")
# Register into the website
@app.route("/register", methods=["GET", "POST"])
def register():
"""Register user"""
# Reconnect to the database
db = None
db = SQL("sqlite:///covid19.db")
# display registration form if the request is via get
if request.method == "GET":
return render_template("register.html")
# Insert the new user to the database if not registered
elif request.method == "POST":
username = request.form.get("username")
email = request.form.get("email")
password = request.form.get("password")
confirmation = request.form.get("confirmation")
""" Check for inavalid inputs """
if not username:
return apology("Missing username!")
elif not email or not ('.' and '@') in email:
return apology("Missing email!")
elif not password:
return apology("Missing password!")
elif not confirmation:
return apology("Missing password confirmation!")
# check if passwords match if not apologize
elif not password == confirmation:
return apology("The passwords didn't match!")
# Query database for username
user_check = db.execute("SELECT * FROM 'users' WHERE email = :email;", email=email)
# if this email already exist in the database
if user_check:
return apology("This Email is registered!")
# if the inputs are valid then insert user data into the database ( hashing the password )
db.execute("INSERT INTO 'users' (username, email, hash) VALUES (:username, :email, :hash)",
username=username, email=email, hash=generate_password_hash(password))
# Query database for user id
row = db.execute("SELECT id, username FROM 'users' WHERE username = :username", username=username)
# log in automatically
if session.get("user_id") is None:
session["user_id"] = row[0]["id"]
if session.get("user_id") is None:
session["user_name"] = row[0]["username"]
return redirect(url_for('index'))
# if the request method is neither post nor get, apologise
return apology("This request method is not supported")
@app.route("/login", methods=["GET", "POST"])
def login():
"""Log user in"""
# Forget any user_id
session.clear()
# Reconnect to the database
db = None
db = SQL("sqlite:///covid19.db")
# User reached route via POST (as by submitting a form via POST)
if request.method == "POST":
email = request.form.get("email")
# Ensure username was submitted
if not email:
return apology("must provide username or email", 403)
# Ensure password was submitted
elif not request.form.get("password"):
return apology("must provide password", 403)
# Query database for email
rows = db.execute("SELECT * FROM 'users' WHERE email = :email", email=email)
# Ensure username exists and password is correct
if len(rows) != 1 or not check_password_hash(rows[0]["hash"], request.form.get("password")):
return apology("invalid email and/or password", 403)
# Remember which user has logged in
session["user_id"] = rows[0]["id"]
session["user_name"] = rows[0]["username"]
# Redirect user to home page
return redirect(url_for("index"))
# User reached route via GET (as by clicking a link or via redirect)
else:
return render_template("login.html")
@app.route("/logout")
def logout():
"""Log user out"""
# Forget any user_id
session.clear()
# Redirect user to login form
return redirect(url_for('login'))
# Edit profile
@app.route("/profile", methods=["GET", "POST"])
@login_required
def profile():
if request.method == "POST":
# Reconnect to the database
db = None
db = SQL("sqlite:///covid19.db")
username = request.form.get("username")
email = request.form.get("email")
old_password = request.form.get("o-password")
new_password = request.form.get("password")
confirmation = request.form.get("confirmation")
""" Check for inavalid inputs """
if not email:
flash("Missing Email!")
return redirect( url_for('profile') )
elif not old_password:
flash("Missing old password!")
return redirect( url_for('profile') )
elif not new_password:
flash("Missing new password!")
return redirect( url_for('profile') )
elif not confirmation:
flash("Missing password condirmation!")
return redirect( url_for('profile') )
# check if passwords match if not apologize
elif not new_password == confirmation:
return apology("The passwords didn't match!")
# Query database for user data
user_check = db.execute("SELECT * FROM 'users' WHERE id = :id AND email = :email",
id=session["user_id"], email=email)
# Ensure username exists and password is correct
if len(user_check) != 1 or not check_password_hash(user_check[0]["hash"], old_password):
return apology("invalid email and/or password", 403)
#Update user username
if username:
flash('Username Changed Successfully!\n')
db.execute("UPDATE 'users' SET username = :username WHERE id = :id",
username=username, id=session["user_id"])
session["user_name"] = username
# Update user password
db.execute("UPDATE 'users' SET hash = :hash WHERE id = :id",
hash=generate_password_hash(new_password), id=session["user_id"])
flash('Password Changed Successfully!')
return redirect(url_for('profile'))
elif request.method == "GET":
return render_template('profile.html', name=session["user_name"])
return apology("Request method is not supported")
@app.route("/api")
@login_required
def api():
if request.method == "GET":
# Reconnect to the database
db = None
db = SQL("sqlite:///covid19.db")
rows = list(db.execute("SELECt * FROM 'tips'"))
arr = []
for row in rows:
data = {"id": row["id"],
"tip": row["tip"]
}
arr.append(data)
return jsonify({"tips": arr})
return apology("Request method is not supported")
@app.route("/tips", methods=["GET", "POST"])
@login_required
def tips():
# Reconnect to the database
db = None
db = SQL("sqlite:///covid19.db")
if request.method == "GET":
rows = db.execute("SELECT tip_id, tip, date FROM 'user_tips' \
JOIN 'users' ON user_tips.user_id = users.id \
JOIN 'tips' ON user_tips.tip_id = tips.id \
WHERE users.id = :id ORDER BY tip_id", id=session["user_id"])
return render_template("tips.html", rows=rows)
elif request.method == "POST":
num = request.form.get("num")
# Check if this tip is already saved in this account
row = db.execute("SELECT tip_id FROM 'user_tips' \
JOIN 'users' ON user_id = users.id\
WHERE tip_id = :tip_id AND user_id = :user_id",
tip_id=num, user_id=session["user_id"])
# if so return
if row:
return "Already Saved"
# else save this tip in this account
db.execute("INSERT INTO 'user_tips' (user_id, tip_id) VALUES (:user_id, :tip_id)",
user_id=session["user_id"], tip_id=num)
return "Successfully Saved"
return apology("Request method is not supported")
def errorhandler(e):
"""Handle error"""
if not isinstance(e, HTTPException):
e = InternalServerError()
return apology(e.name, e.code)
# Listen for errors
for code in default_exceptions:
app.errorhandler(code)(errorhandler)