def process_login():
    model.connect_to_db()
    username = request.form.get("username")
    password = request.form.get("password")

    user_id = model.authenticate(username, password)
    if model.authenticate(username, password):
        flash("User authenticated")
        session['user_id'] = user_id
    else:
        flash("Password incorrect, there may be a ferret stampede in progress!")

    return redirect(url_for("index"))

def process_login():
    email = request.form.get("email")
    password = request.form.get("password")

    if model.authenticate(email, password):
        user_email, user_id = model.authenticate(email, password)
        if email != None:
            flash ("Welcome, %s!" % str(user_email))
            session['user_id'] = user_id # put user_id into the session rather than email
    else:
        flash("Authentication failed.")

    return redirect(url_for("index"))

 def on_btn_login_clicked(self):
     usr_name = unicode(self.edit_usr_name.text())
     pwd = unicode(self.edit_pwd.text())
     if not model.authenticate(usr_name, pwd):
         QMessageBox.critical(self, u"登录", u"用户名或密码错误!")            
     else:
         self.done(QDialog.Accepted)

def authenticate():
    login_email = request.form['email']
    login_pw = request.form['password']
    usr_auth = model.authenticate(g.db, login_email, login_pw)
    print usr_auth
    session['usr_id'] = usr_auth['id']
    return redirect(url_for('list_tasks'))

def login():
	email = request.form['email']
	password = request.form['password']
	db = model.connect_db()
	auth_user = model.authenticate(db, email, password)
	if auth_user != None:
		return redirect("/Tasks")

def authenticate():
	email = request.form['email']
	password = request.form['password']
	# capture the userid information from model-database
	user_id = model.authenticate(g.db, email, password)
	session['user_id'] = user_id
	# after getting the session variable back, you have to point it to a page
	return redirect("/")

def authenticate():
    email = request.form["email"]
    password = request.form["password"]
    user_id = model.authenticate(g.db, email, password)
    if user_id == None:
        error = "no user with that combination"
        return render_template("/login.html", error=error)
    session["user_id"] = user_id
    return redirect("/tasks")

def authenticate():
    db = model.connect_db()
    email = request.form['email']
    password = request.form['password']
    user_info = model.authenticate(db, email, password)
    if user_info == None:
        return redirect('/')
    else:
        return redirect('/tasks')

def process_login():
    username = request.form.get("username")
    password = request.form.get("password")

    if model.authenticate(username, password):
        flash("User authenticated!")
    else:
        flash('Password incorrect!')
    return redirect(url_for("index"))

def process_login():
    # form.get("___") --> blank corresponds to name in HTML form
    email = request.form.get("email")
    password = request.form.get("password")
    if model.authenticate(email, password):
        return render_template("login.html", email=email, password=password)
        # redirect to logged in user page instead
    else:
        return render_template("login_fail.html")

def login():
    email = request.form.get("email")
    password = request.form.get("password")
    user_id = model.authenticate(email, password)
    if user_id == None:
        flash("User does not exist")
        return redirect(url_for("index"))
    else:
        session['id'] = user_id
        return redirect(url_for("profile", user_id =user_id))

def process_login():
    email = request.form.get("email")
    password = request.form.get("password")
    if model.authenticate(email, password):
        user_object = model_session.query(model.User).filter_by(email=email).first()
        session['id'] = user_object.user_id
        return redirect(url_for("user_movies", user_id=user_object.user_id))
    else:
        flash("Login incorrect!")
        return redirect("/")

def authenticate():
    email = request.form['email']
    password = request.form['password']
    user_id = model.authenticate(self, email, password)
    
    if user_id != None:
    	session['user_id'] = user_id
    	return render_template("ratings.html")
    else:
    	return redirect("/login")

def process_login():
    user_id = request.form.get("user_id")
    password = request.form.get("password")
    user_id = model.authenticate(user_id, password)
    if user_id:
        flash("User authenticated")
        session["user_id"] = user_id
    else:
        flash("WRONG.")

    return redirect(url_for("index"))    

    def POST(self):
        login = web.input()
        if model.authenticate(login.username,login.password)=='True':
            session.logged_in = True
            session.username = login.username
            print session
            raise web.seeother('/home')
        else:
          raise web.seeother('/login')

        return render.form()

def process_login():
    emailform = request.form.get("email")
    passwordform = request.form.get("password")

    email = model.authenticate(emailform, hash(passwordform))
    if email != None:
        flash("User authenticated!")
        session['email'] = email
    else:
        flash("Password incorrect, please try again.")
    return redirect(url_for("main_menu"))

def login():
    if request.method == 'POST':
        user = model.authenticate(request.form['username'], request.form['password'])
        if user:
            login_user(user)
            url = request.form['next'] if 'next' in request.form else '/'
            return redirect(url)
        else:
            flash('Invalid login', 'error')
            return redirect('/login')
    return render_template('login.html', next=request.args.get('next'))

def login():
  #TODO: add validation
  form = request.form
  email = form["email"]
  password = form["password"]

  name = model.authenticate(email, password)
  if name:
    return render_template("dashboard.html", name=name)
  flash("Password and Email invalid. Sucks to be you.")
  return render_template("login.html")

def process_login():
    username = request.form.get("username")
    password = request.form.get("password")

    user_id = model.authenticate(username, password)
    if user_id != None:
        flash("User authenticated!")
        session['id'] = user_id
        return redirect(url_for ("view_user", username = username))
    else:
        flash("Password incorrect, there may be a ferret stampede in progress!")
        return redirect(url_for("index"))

def login():
    email = request.form.get("email")
    password = request.form.get("password")

    user_info = model.authenticate(email, password)
    if user_info != None:
        session['user_id'] = user_info[0]
        session['email'] = user_info[1]
        return redirect("/users/%s" %user_info[0])
    else:
        flash("Your login credentials are not recognized. Sorry!")
        return render_template("index.html")