project

import sqlite3
from flask import Flask, flash, redirect, render_template, request, session, url_for
from flask_session import Session
from passlib.apps import custom_app_context as pwd_context
from tempfile import gettempdir
from sqlalchemy import create_engine, MetaData, Table

from helpers import *

# configure application
app = Flask(__name__)

# set up SQLAlchemy
# app.config['SQLALCHEMY_DATABASE_URI'] = 'sqlite:///signme.db'
# db = SQLAlchemy(app)
engine = create_engine('sqlite:///signme.db', convert_unicode=True)
metadata = MetaData(bind=engine)

# ensure responses aren't cached
if app.config["DEBUG"]:
    @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"] = gettempdir()
app.config["SESSION_PERMANENT"] = False
app.config["SESSION_TYPE"] = "filesystem"
Session(app)

# connect to database
# conn = sqlite3.connect('signme.db', check_same_thread=False)
# db = conn.cursor()


@app.route("/")
@login_required
def home():
    # select row from users table corresponding to the user
    user = engine.execute("SELECT * FROM user WHERE id = :id", id=session["user_id"])

    # select events from events table corresponding to the user
    # myevents = db.execute("SELECT title FROM events WHERE host = :host", host=session["user_id"])

    # select events from registrants table corresponding to the user
    #registeredevents = db.execute("SELECT title from ")


    return render_template("home.html")

@app.route("/newevent", methods=["GET", "POST"])
@login_required
def newevent():

    # if user reached route via POST
    if request.method == "POST":

        # update events table
        db.execute("INSERT INTO events (title, host) VALUES (:title, :host)", title=request.form.get("title"),
        host=session["user_id"])

    # else if user reached route via GET
    #else:
    return render_template("newevent.html")

@app.route("/login", methods=["GET", "POST"])
def login():
    """Log user in."""

    # forget any user_id
    session.clear()

    # if user reached route via POST (as by submitting a form via POST)
    if request.method == "POST":

        # ensure username was submitted
        if not request.form.get("username"):
            return render_template("error.html", message = "Must provide username")

        # ensure password was submitted
        elif not request.form.get("password"):
            return render_template("error.html", message = "Must provide password")

        # query database for username
        rows = db.execute("SELECT * FROM users WHERE email = :email", email=request.form.get("email"))

        # ensure username exists and password is correct
        if len(rows) != 1 or not pwd_context.verify(request.form.get("password"), rows[0]["hash"]):
            return render_template("error.html", message = "Invalid username and/or password")

        # remember which user has logged in
        session["user_id"] = rows[0]["id"]

        # redirect user to home page
        return redirect(url_for("home"))

    # else if 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"))


@app.route("/register", methods=["GET", "POST"])
def register():
    """Register user."""

    # if user reached route via POST
    if request.method == "POST":

        # hash password
        hash=pwd_context.encrypt(request.form.get("password"))

        # enter new user into users
        user = db.execute("INSERT INTO users (email, password) VALUES (:email, :password)", username=request.form.get("email"),
        password=hash)

        # remember the user who has just registered
        session["user_id"] = user

        # redirect user to home page
        return redirect(url_for("home"))

    # else if user reached route via GET
    else:
        return render_template("register.html")