def login():
if 'username' in session:
return jsonify(status_error_already_logged_in)
else:
if request.method == 'POST':
if Users.query.filter_by(USERNAME=request.form['username']).first() is None:
return jsonify(status_error_wrong_username_or_password)
else:
user = Users.query.filter_by(USERNAME=request.form['username']).first()
if check_password_hash(user.PASSWORD, request.form['password']) is False:
return jsonify(status_error_wrong_username_or_password)
else:
session['username'] = request.form['username']
return jsonify(status_ok_login_successfully)
return render_template("user/login.html")
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