fix: show the purchase warning banner also on the touchkey login

feat: replace overlay system with a generic notification banner system
feat: add a config option to automatically close tabs after ean purchase

CHANGELOG.md

@@ -1,5 +1,20 @@
 # Matemat Changelog
 
+<!-- BEGIN RELEASE v0.3.14 -->
+## Version 0.3.14
+
+Improvement of quick-purchase via EAN codes
+
+### Changes
+
+<!-- BEGIN CHANGES 0.3.14 -->
+- fix: show the purchase warning banner also on the touchkey login
+- feat: replace overlay system with a generic notification banner system
+- feat: add a config option to automatically close tabs after ean purchase
+<!-- END CHANGES 0.3.14 -->
+
+<!-- END RELEASE v0.3.14 -->
+
 <!-- BEGIN RELEASE v0.3.13 -->
 ## Version 0.3.13
 

matemat/__init__.py

@@ -1,2 +1,2 @@
 
-__version__ = '0.3.13'
+__version__ = '0.3.14'

matemat/webserver/pagelets/buy.py

@@ -26,6 +26,7 @@ def buy():
         if 'pid' in request.params:
             pid = int(str(request.params.pid))
             product = db.get_product(pid)
+            closetab = int(str(request.params.closetab) or 0)
             if c.get_dispenser().dispense(product, 1):
                 price = product.price_member if user.is_member else product.price_non_member
                 if 'price' in request.params:
@@ -37,7 +38,7 @@ def buy():
                     stock_provider.update_stock(product, -1)
                 # Logout user if configured, logged in via touchkey and no price entry input was shown
                 if user.logout_after_purchase and authlevel < 2 and not product.custom_price:
-                    redirect(f'/logout?lastaction=buy&lastproduct={pid}&lastprice={price}')
+                    redirect(f'/logout?lastaction=buy&lastproduct={pid}&lastprice={price}&closetab={closetab}')
                 # Redirect to the main page (where this request should have come from)
-                redirect(f'/?lastaction=buy&lastproduct={pid}&lastprice={price}')
+                redirect(f'/?lastaction=buy&lastproduct={pid}&lastprice={price}&closetab={closetab}')
     redirect('/')

matemat/webserver/pagelets/main.py

@@ -4,7 +4,9 @@ from bottle import route, redirect, request
 
 from matemat.db import MatematDatabase
 from matemat.webserver import template, session
+from matemat.webserver.template import Notification
 from matemat.webserver.config import get_app_config, get_stock_provider
+from matemat.util.currency_format import format_chf
 
 
 @route('/')
@@ -18,18 +20,21 @@ def main_page():
     with MatematDatabase(config['DatabaseFile']) as db:
         # Fetch the list of products to display
         products = db.list_products()
-        if request.params.lastproduct:
+        closetab = int(str(request.params.closetab) or 0)
-            lastproduct = db.get_product(request.params.lastproduct)
-        else:
-            lastproduct = None
         lastprice = int(request.params.lastprice) if request.params.lastprice else None
+        if request.params.lastaction == 'deposit' and lastprice:
+            Notification.success(f'Deposited {format_chf(lastprice)}', decay=True)
+        elif request.params.lastaction == 'buy' and lastprice and request.params.lastproduct:
+            lastproduct = db.get_product(request.params.lastproduct)
+            Notification.success(f'Purchased {lastproduct.name} for {format_chf(lastprice)}', decay=True)
+        buyproduct = None
         if request.params.ean:
             try:
                 buyproduct = db.get_product_by_ean(request.params.ean)
+                Notification.success(
+                    f'Login will purchase <strong>{buyproduct.name}</strong>. Click <a href="/">here</a> to abort.')
             except ValueError:
-                buyproduct = None
+                Notification.error(f'EAN code {request.params.ean} is not associated with any product.', decay=True)
-        else:
-            buyproduct = None
         # Check whether a user is logged in
         if session.has(session_id, 'authenticated_user'):
             # Fetch the user id and authentication level (touchkey vs password) from the session storage
@@ -37,14 +42,16 @@ def main_page():
             authlevel: int = session.get(session_id, 'authentication_level')
             # If an EAN code was scanned, directly trigger the purchase
             if buyproduct:
-                redirect(f'/buy?pid={buyproduct.id}')
+                url = f'/buy?pid={buyproduct.id}'
+                if config.get('CloseTabAfterEANPurchase', '0') == '1':
+                    url += '&closetab=1'
+                redirect(url)
             # Fetch the user object from the database (for name display, price calculation and admin check)
             users = db.list_users()
             user = db.get_user(uid)
             # Prepare a response with a jinja2 template
             return template.render('productlist.html',
                                    authuser=user, users=users, products=products, authlevel=authlevel,
-                                   lastaction=request.params.lastaction, lastprice=lastprice, lastproduct=lastproduct,
                                    stock=get_stock_provider(), setupname=config['InstanceName'], now=now)
         else:
             # If there are no admin users registered, jump to the admin creation procedure
@@ -55,5 +62,4 @@ def main_page():
             return template.render('userlist.html',
                                    users=users, setupname=config['InstanceName'], now=now,
                                    signup=(config.get('SignupEnabled', '0') == '1'),
-                                   lastaction=request.params.lastaction, lastprice=lastprice, lastproduct=lastproduct,
+                                   buyproduct=buyproduct, closetab=closetab)
-                                   buyproduct=buyproduct)

matemat/webserver/pagelets/touchkey.py

@@ -4,6 +4,7 @@ from matemat.db import MatematDatabase
 from matemat.db.primitives import User
 from matemat.exceptions import AuthenticationError
 from matemat.webserver import template, session
+from matemat.webserver.template import Notification
 from matemat.webserver.config import get_app_config
 
 
@@ -16,15 +17,21 @@ def touchkey_page():
     """
     config = get_app_config()
     session_id: str = session.start()
+    with MatematDatabase(config['DatabaseFile']) as db:
         # If a user is already logged in, simply redirect to the main page, showing the product list
         if session.has(session_id, 'authenticated_user'):
             redirect('/')
         # If requested via HTTP GET, render the login page showing the touchkey UI
         if request.method == 'GET':
+            buypid = None
             if request.params.buypid:
                 buypid = str(request.params.buypid)
-        else:
+                try:
-            buypid = None
+                    buyproduct = db.get_product(int(buypid))
+                    Notification.success(
+                        f'Login will purchase <strong>{buyproduct.name}</strong>. Click <a href="/">here</a> to abort.')
+                except ValueError:
+                    Notification.error(f'No product with id {buypid}', decay=True)
             return template.render('touchkey.html',
                                    username=str(request.params.username), uid=int(str(request.params.uid)),
                                    setupname=config['InstanceName'], buypid=buypid)
@@ -44,7 +51,10 @@ def touchkey_page():
             session.put(session_id, 'authentication_level', 1)
             if request.params.buypid:
                 buypid = str(request.params.buypid)
-            redirect(f'/buy?pid={buypid}')
+                url = f'/buy?pid={buypid}'
+                if config.get('CloseTabAfterEANPurchase', '0') == '1':
+                    url += '&closetab=1'
+                redirect(url)
             # Redirect to the main page, showing the product list
             redirect('/')
         # If neither GET nor POST was used, show a 405 Method Not Allowed error page

matemat/webserver/template/__init__.py

@@ -1,2 +1,3 @@
 
+from .notification import Notification
 from .template import init, render

matemat/webserver/template/notification.py

@@ -0,0 +1,25 @@
+
+
+class Notification:
+    notifications = []
+
+    def __init__(self, msg: str, classes=None, decay: bool = False):
+        self.msg = msg
+        self.classes = []
+        self.classes.extend(classes)
+        if decay:
+            self.classes.append('decay')
+
+    @classmethod
+    def render(cls):
+        n = list(cls.notifications)
+        cls.notifications.clear()
+        return n
+
+    @classmethod
+    def success(cls, msg: str, decay: bool = False):
+        cls.notifications.append(cls(msg, classes=['success'], decay=decay))
+
+    @classmethod
+    def error(cls, msg: str, decay: bool = False):
+        cls.notifications.append(cls(msg, classes=['error'], decay=decay))

matemat/webserver/template/template.py

@@ -5,6 +5,7 @@ import jinja2
 
 from matemat import __version__
 from matemat.util.currency_format import format_chf
+from matemat.webserver.template import Notification
 
 __jinja_env: jinja2.Environment = None
 
@@ -22,4 +23,8 @@ def init(config: Dict[str, Any]) -> None:
 def render(name: str, **kwargs):
     global __jinja_env
     template: jinja2.Template = __jinja_env.get_template(name)
-    return template.render(__version__=__version__, **kwargs).encode('utf-8')
+    return template.render(
+        __version__=__version__,
+        notifications=Notification.render(),
+        **kwargs
+    ).encode('utf-8')

package/debian/matemat/etc/matemat.conf

@@ -37,6 +37,11 @@ InstanceName=Matemat
 #SignupEnabled=1
 #SignupKioskMode= ::1, ::ffff:127.0.0.0/8, 127.0.0.0/8
 
+#
+# Close tabs after completing an EAN code scan based purchase.
+# This only works in Firefox with dom.allow_scripts_to_close_windows=true
+#
+#CloseTabAfterEANPurchase=1
 
 # Add static HTTP headers in this section
 # [HttpHeaders]

static/css/matemat.css

@@ -57,8 +57,19 @@ nav div {
     width: calc(100% - 36px);
     margin: 10px;
     padding: 10px;
+}
+.notification.success {
     background-color: #c0ffc0;
 }
+.notification.error {
+    background-color: #ffc0c0;
+}
+.notification.decay {
+    animation: notificationdecay 0s 7s forwards;
+}
+@keyframes notificationdecay {
+    to { display: none; }
+}
 
 @media print {
     footer {
@@ -306,37 +317,3 @@ div.osk-button.osk-button-space {
     flex: 5 0 1px;
     color: #606060;
 }
-
-aside#overlay {
-    position: absolute;
-    top: 0;
-    right: 0;
-    bottom: 0;
-    left: 0;
-    background: #88ff88;
-    text-align: center;
-    z-index: 1000;
-    padding: 5%;
-    font-family: sans-serif;
-    display: none;
-    transition: opacity 700ms;
-    opacity: 0;
-}
-
-aside#overlay.fade {
-    opacity: 100%;
-}
-
-aside#overlay > h2 {
-    font-size: 3em;
-}
-
-aside#overlay > img {
-    width: 30%;
-    height: auto;
-}
-
-aside#overlay > div.price {
-    padding-top: 30px;
-    font-size: 2em;
-}

static/js/overlay.js

@@ -1,18 +0,0 @@
-
-setTimeout(() => {
-    let overlay = document.getElementById('overlay');
-    if (overlay !== null) {
-        overlay.style.display = 'block';
-        setTimeout(() => {
-            overlay.classList.add('fade');
-            setTimeout(() => {
-                setTimeout(() => {
-                    overlay.classList.remove('fade');
-                    setTimeout(() => {
-                        overlay.style.display = 'none';
-                    }, 700);
-                }, 700);
-            }, 700);
-        }, 10);
-    }
-}, 0);

templates/base.html

@@ -12,27 +12,6 @@
 
 <body>
 
-{% block overlay %}
-{% if lastaction is defined and lastaction is not none %}
-{% if lastaction == 'buy' %}
-<aside id="overlay">
-    <h2>{{ lastproduct.name }}</h2>
-    <img src="/static/upload/thumbnails/products/{{ lastproduct.id }}.png?cacheBuster={{ now }}" alt="Picture of {{ lastproduct.name }}" draggable="false"/>
-{% if lastprice is not none %}
-    <div class="price">{{ lastprice|chf }}</div>
-{% endif %}
-</aside>
-{% elif lastaction == 'deposit' %}
-<aside id="overlay">
-    <h2>Deposit</h2>
-{% if lastprice is not none %}
-    <div class="price">{{ lastprice|chf }}</div>
-{% endif %}
-</aside>
-{% endif %}
-{% endif %}
-{% endblock %}
-
 <header>
     {% block header %}
 
@@ -55,6 +34,11 @@
 </header>
 
 <main>
+    {% block notifications %}
+    {% for n in notifications | default([]) %}
+    <div class="notification {{ n.classes | join(' ') }}">{{ n.msg|safe }}</div>
+    {% endfor %}
+    {% endblock %}
     {% block main %}
         {# Here be content. #}
     {% endblock %}
@@ -72,6 +56,5 @@
     {% endblock %}
 </footer>
 
-<script src="/static/js/overlay.js"></script>
 </body>
 </html>

templates/productlist.html

@@ -81,4 +81,9 @@
 
     {{ super() }}
 
+    {% if closetab | default(0) %}
+    {# This only works in Firefox with dom.allow_scripts_to_close_windows=true #}
+    <script>setTimeout(window.close, 3000);</script>
+    {% endif %}
+
 {% endblock %}

templates/userlist.html

@@ -8,13 +8,6 @@
 
 {% block main %}
 
-    {% if buyproduct %}
-    <div class="notification">
-	Login will purchase <strong>{{ buyproduct.name }}</strong>.
-	Click <a href="/">here</a> to abort.
-    </div>
-    {% endif %}
-
     {% for user in users %}
         {# Show an item per user, consisting of the username, and the avatar, linking to the touchkey login #}
         <div class="thumblist-item">
@@ -40,4 +33,9 @@
 
     {{ super() }}
 
+    {% if closetab | default(0) %}
+    {# This only works in Firefox with dom.allow_scripts_to_close_windows=true #}
+    <script>setTimeout(window.close, 3000);</script>
+    {% endif %}
+
 {% endblock %}