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92 lines
2.5 KiB
92 lines
2.5 KiB
# https://flask.palletsprojects.com/en/2.0.x/tutorial/views/
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# --------------------------------------------------------------
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import functools
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from flask import (
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Blueprint, flash, g, redirect, render_template, request, session, url_for
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)
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from werkzeug.security import check_password_hash, generate_password_hash
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from webflask.db import get_db
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bp = Blueprint('auth', __name__, url_prefix='/auth')
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@bp.route('/login', methods=('GET', 'POST'))
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def login():
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if request.method == 'POST':
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username = request.form['username']
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password = request.form['password']
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db = get_db()
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error = None
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user = db.execute(
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'SELECT * FROM user WHERE username = ?', (username,)
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).fetchone()
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if user is None:
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error = 'Incorrect username.'
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elif not check_password_hash(user['password'], password):
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error = 'Incorrect password.'
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if error is None:
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session.clear()
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session['user_id'] = user['id']
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return redirect(url_for('index'))
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flash(error)
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return render_template('auth/login.html')
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@bp.route('/register', methods=('GET', 'POST'))
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def register():
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if request.method == 'POST':
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username = request.form['username']
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password = request.form['password']
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db = get_db()
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error = None
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if not username:
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error = 'Username is required.'
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elif not password:
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error = 'Password is required.'
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if error is None:
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try:
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db.execute(
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"INSERT INTO user (username, password) VALUES (?, ?)",
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(username, generate_password_hash(password)),
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)
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db.commit()
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except db.IntegrityError:
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error = f"User {username} is already registered."
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else:
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return redirect(url_for("auth.login"))
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flash(error)
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return render_template('auth/register.html')
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@bp.before_app_request
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def load_logged_in_user():
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user_id = session.get('user_id')
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if user_id is None:
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g.user = None
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else:
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g.user = get_db().execute(
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'SELECT * FROM user WHERE id = ?', (user_id,)
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).fetchone()
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@bp.route('/logout')
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def logout():
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session.clear()
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return redirect(url_for('index'))
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def login_required(view):
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@functools.wraps(view)
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def wrapped_view(**kwargs):
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if g.user is None:
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return redirect(url_for('auth.login'))
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return view(**kwargs)
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return wrapped_view
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