feat: add option to log out users automatically after completing a purchase

CHANGELOG.md

@@ -1,5 +1,18 @@
 # Matemat Changelog
 
+<!-- BEGIN RELEASE v0.3.10 -->
+## Version 0.3.10
+
+Add option to log out users automatically after completing a purchase
+
+### Changes
+
+<!-- BEGIN CHANGES 0.3.10 -->
+- Add option to log out users automatically after completing a purchase
+<!-- END CHANGES 0.3.10 -->
+
+<!-- END RELEASE v0.3.10 -->
+
 <!-- BEGIN RELEASE v0.3.9 -->
 ## Version 0.3.9
 

matemat/db/facade.py

@@ -84,7 +84,7 @@ class MatematDatabase(object):
         users: List[User] = []
         with self.db.transaction(exclusive=False) as c:
             for row in c.execute('''
-                SELECT user_id, username, email, is_admin, is_member, balance, receipt_pref
+                SELECT user_id, username, email, is_admin, is_member, balance, receipt_pref, logout_after_purchase
                 FROM users
                 WHERE touchkey IS NOT NULL OR NOT :must_have_touchkey
                 ORDER BY username COLLATE NOCASE ASC
@@ -92,12 +92,13 @@ class MatematDatabase(object):
                 'must_have_touchkey': with_touchkey
             }):
                 # Decompose each row and put the values into a User object
-                user_id, username, email, is_admin, is_member, balance, receipt_p = row
+                user_id, username, email, is_admin, is_member, balance, receipt_p, logout_after_purchase = row
                 try:
                     receipt_pref: ReceiptPreference = ReceiptPreference(receipt_p)
                 except ValueError:
                     raise DatabaseConsistencyError(f'{receipt_p} is not a valid ReceiptPreference')
-                users.append(User(user_id, username, balance, email, is_admin, is_member, receipt_pref))
+                users.append(User(user_id, username, balance, email, is_admin, is_member, receipt_pref,
+                                  logout_after_purchase))
         return users
 
     def get_user(self, uid: int) -> User:
@@ -108,7 +109,7 @@ class MatematDatabase(object):
         with self.db.transaction(exclusive=False) as c:
             # Fetch all values to construct the user
             c.execute('''
-                SELECT user_id, username, email, is_admin, is_member, balance, receipt_pref
+                SELECT user_id, username, email, is_admin, is_member, balance, receipt_pref, logout_after_purchase
                 FROM users
                 WHERE user_id = ?
                 ''',
@@ -117,19 +118,20 @@ class MatematDatabase(object):
             if row is None:
                 raise ValueError(f'No user with user ID {uid} exists.')
             # Unpack the row and construct the user
-            user_id, username, email, is_admin, is_member, balance, receipt_p = row
+            user_id, username, email, is_admin, is_member, balance, receipt_p, logout_after_purchase = row
             try:
                 receipt_pref: ReceiptPreference = ReceiptPreference(receipt_p)
             except ValueError:
                 raise DatabaseConsistencyError(f'{receipt_p} is not a valid ReceiptPreference')
-            return User(user_id, username, balance, email, is_admin, is_member, receipt_pref)
+            return User(user_id, username, balance, email, is_admin, is_member, receipt_pref, logout_after_purchase)
 
     def create_user(self,
                     username: str,
                     password: str,
                     email: Optional[str] = None,
                     admin: bool = False,
-                    member: bool = True) -> User:
+                    member: bool = True,
+                    logout_after_purchase: bool = False) -> User:
         """
         Create a new user.
         :param username: The name of the new user.
@@ -137,6 +139,7 @@ class MatematDatabase(object):
         :param email: The user's email address, defaults to None.
         :param admin: Whether the user is an administrator, defaults to False.
         :param member: Whether the user is a member, defaults to True.
+        :param logout_after_purchase: Whether the user should be logged out after completing a purchase.
         :return: A User object representing the created user.
         :raises ValueError: If a user with the same name already exists.
         """
@@ -150,8 +153,10 @@ class MatematDatabase(object):
                 raise ValueError(f'A user with the name \'{username}\' already exists.')
             # Insert the user into the database.
             c.execute('''
-              INSERT INTO users (username, email, password, balance, is_admin, is_member, lastchange, created)
+              INSERT INTO users (username, email, password, balance, is_admin, is_member, lastchange, created, 
-              VALUES (:username, :email, :pwhash, 0, :admin, :member, STRFTIME('%s', 'now'), STRFTIME('%s', 'now'))
+                  logout_after_purchase)
+              VALUES (:username, :email, :pwhash, 0, :admin, :member, STRFTIME('%s', 'now'), STRFTIME('%s', 'now'),
+                  logout_after_purchase)
             ''', {
                 'username': username,
                 'email': email,
@@ -179,14 +184,15 @@ class MatematDatabase(object):
             raise ValueError('Exactly one of password and touchkey must be provided')
         with self.db.transaction(exclusive=False) as c:
             c.execute('''
-              SELECT user_id, username, email, password, touchkey, is_admin, is_member, balance, receipt_pref
+              SELECT user_id, username, email, password, touchkey, is_admin, is_member, balance, receipt_pref,
+                logout_after_purchase
               FROM users
               WHERE username = ?
               ''', [username])
             row = c.fetchone()
             if row is None:
                 raise AuthenticationError('User does not exist')
-            user_id, username, email, pwhash, tkhash, admin, member, balance, receipt_p = row
+            user_id, username, email, pwhash, tkhash, admin, member, balance, receipt_p, logout_after_purchase = row
             if password is not None and not compare_digest(crypt.crypt(password, pwhash), pwhash):
                 raise AuthenticationError('Password mismatch')
             elif touchkey is not None \
@@ -199,7 +205,7 @@ class MatematDatabase(object):
                 receipt_pref: ReceiptPreference = ReceiptPreference(receipt_p)
             except ValueError:
                 raise DatabaseConsistencyError(f'{receipt_p} is not a valid ReceiptPreference')
-            return User(user_id, username, balance, email, admin, member, receipt_pref)
+            return User(user_id, username, balance, email, admin, member, receipt_pref, logout_after_purchase)
 
     def change_password(self, user: User, oldpass: str, newpass: str, verify_password: bool = True) -> None:
         """
@@ -280,6 +286,7 @@ class MatematDatabase(object):
         balance: int = kwargs['balance'] if 'balance' in kwargs else user.balance
         balance_reason: Optional[str] = kwargs['balance_reason'] if 'balance_reason' in kwargs else None
         receipt_pref: ReceiptPreference = kwargs['receipt_pref'] if 'receipt_pref' in kwargs else user.receipt_pref
+        logout_after_purchase: bool = kwargs['logout_after_purchase'] if 'logout_after_purchase' in kwargs else user.logout_after_purchase
         with self.db.transaction() as c:
             c.execute('SELECT balance FROM users WHERE user_id = :user_id', {'user_id': user.id})
             row = c.fetchone()
@@ -312,7 +319,8 @@ class MatematDatabase(object):
               is_admin = :is_admin,
               is_member = :is_member,
               receipt_pref = :receipt_pref,
-              lastchange = STRFTIME('%s', 'now')
+              lastchange = STRFTIME('%s', 'now'),
+              logout_after_purchase = :logout_after_purchase
             WHERE user_id = :user_id
             ''', {
                 'user_id': user.id,
@@ -321,7 +329,8 @@ class MatematDatabase(object):
                 'balance': balance,
                 'is_admin': is_admin,
                 'is_member': is_member,
-                'receipt_pref': receipt_pref.value
+                'receipt_pref': receipt_pref.value,
+                'logout_after_purchase': logout_after_purchase
             })
         # Only update the actual user object after the changes in the database succeeded
         user.name = name
@@ -329,6 +338,7 @@ class MatematDatabase(object):
         user.balance = balance
         user.is_admin = is_admin
         user.is_member = is_member
+        user.logout_after_purchase = user.logout_after_purchase
         user.receipt_pref = receipt_pref
 
     def delete_user(self, user: User) -> None:

matemat/db/migrations.py

@@ -276,3 +276,11 @@ def migrate_schema_5_to_6(c: sqlite3.Cursor):
     ALTER TABLE products ADD COLUMN
     custom_price INTEGER(1) DEFAULT 0;
     ''')
+
+
+def migrate_schema_6_to_7(c: sqlite3.Cursor):
+    # Add custom_price column
+    c.execute('''
+    ALTER TABLE users ADD COLUMN
+    logout_after_purchase INTEGER(1) DEFAULT 0;
+    ''')

matemat/db/primitives/User.py

@@ -26,7 +26,8 @@ class User:
                  email: Optional[str] = None,
                  is_admin: bool = False,
                  is_member: bool = False,
-                 receipt_pref: ReceiptPreference = ReceiptPreference.NONE) -> None:
+                 receipt_pref: ReceiptPreference = ReceiptPreference.NONE,
+                 logout_after_purchase: bool = False) -> None:
         self.id: int = _id
         self.name: str = name
         self.balance: int = balance
@@ -34,6 +35,7 @@ class User:
         self.is_admin: bool = is_admin
         self.is_member: bool = is_member
         self.receipt_pref: ReceiptPreference = receipt_pref
+        self.logout_after_purchase: bool = logout_after_purchase
 
     def __eq__(self, other) -> bool:
         if not isinstance(other, User):
@@ -44,7 +46,9 @@ class User:
             self.email == other.email and \
             self.is_admin == other.is_admin and \
             self.is_member == other.is_member and \
-            self.receipt_pref == other.receipt_pref
+            self.receipt_pref == other.receipt_pref and \
+            self.logout_after_purchase == other.logout_after_purchase
 
     def __hash__(self) -> int:
-        return hash((self.id, self.name, self.balance, self.email, self.is_admin, self.is_member, self.receipt_pref))
+        return hash((self.id, self.name, self.balance, self.email, self.is_admin, self.is_member, self.receipt_pref,
+                     self.logout_after_purchase))

matemat/db/schemas.py

@@ -413,3 +413,84 @@ SCHEMAS[6] = [
         ON DELETE SET NULL ON UPDATE CASCADE
     );
     ''']
+
+
+SCHEMAS[7] = [
+    '''
+    CREATE TABLE users (
+      user_id INTEGER PRIMARY KEY,
+      username TEXT UNIQUE NOT NULL,
+      email TEXT DEFAULT NULL,
+      password TEXT NOT NULL,
+      touchkey TEXT DEFAULT NULL,
+      is_admin INTEGER(1) NOT NULL DEFAULT 0,
+      is_member INTEGER(1) NOT NULL DEFAULT 1,
+      balance INTEGER(8) NOT NULL DEFAULT 0,
+      lastchange INTEGER(8) NOT NULL DEFAULT 0,
+      receipt_pref INTEGER(1) NOT NULL DEFAULT 0,
+      created INTEGER(8) NOT NULL DEFAULT 0,
+      logout_after_purchase INTEGER(1) DEFAULT 0
+    );
+    ''',
+    '''
+    CREATE TABLE products (
+      product_id INTEGER PRIMARY KEY,
+      name TEXT UNIQUE NOT NULL,
+      stock INTEGER(8) DEFAULT 0,
+      stockable INTEGER(1) DEFAULT 1,
+      price_member INTEGER(8) NOT NULL,
+      price_non_member INTEGER(8) NOT NULL,
+      custom_price INTEGER(1) DEFAULT 0
+    );
+    ''',
+    '''
+    CREATE TABLE transactions (  -- "superclass" of the following 3 tables
+      ta_id INTEGER PRIMARY KEY,
+      user_id INTEGER DEFAULT NULL,
+      value INTEGER(8) NOT NULL,
+      old_balance INTEGER(8) NOT NULL,
+      date INTEGER(8) DEFAULT (STRFTIME('%s', 'now')),
+      FOREIGN KEY (user_id) REFERENCES users(user_id)
+        ON DELETE SET NULL ON UPDATE CASCADE
+    );
+    ''',
+    '''
+    CREATE TABLE consumptions (  -- transactions involving buying a product
+      ta_id INTEGER PRIMARY KEY,
+      product TEXT NOT NULL,
+      FOREIGN KEY (ta_id) REFERENCES transactions(ta_id)
+        ON DELETE CASCADE ON UPDATE CASCADE
+    );
+    ''',
+    '''
+    CREATE TABLE deposits (  -- transactions involving depositing cash
+      ta_id INTEGER PRIMARY KEY,
+      FOREIGN KEY (ta_id) REFERENCES transactions(ta_id)
+        ON DELETE CASCADE ON UPDATE CASCADE
+    );
+    ''',
+    '''
+    CREATE TABLE modifications (  -- transactions involving balance modification by an admin
+      ta_id INTEGER NOT NULL,
+      agent TEXT NOT NULL,
+      reason TEXT DEFAULT NULL,
+      PRIMARY KEY (ta_id),
+      FOREIGN KEY (ta_id) REFERENCES transactions(ta_id)
+        ON DELETE CASCADE ON UPDATE CASCADE
+    );
+    ''',
+    '''
+    CREATE TABLE receipts (  -- receipts sent to the users
+      receipt_id INTEGER PRIMARY KEY,
+      user_id INTEGER NOT NULL,
+      first_ta_id INTEGER DEFAULT NULL,
+      last_ta_id INTEGER DEFAULT NULL,
+      date INTEGER(8) DEFAULT (STRFTIME('%s', 'now')),
+      FOREIGN KEY (user_id) REFERENCES users(user_id)
+        ON DELETE CASCADE ON UPDATE CASCADE,
+      FOREIGN KEY (first_ta_id) REFERENCES transactions(ta_id)
+        ON DELETE SET NULL ON UPDATE CASCADE,
+      FOREIGN KEY (last_ta_id) REFERENCES transactions(ta_id)
+        ON DELETE SET NULL ON UPDATE CASCADE
+    );
+    ''']

matemat/db/wrapper.py

@@ -40,7 +40,7 @@ class DatabaseTransaction(object):
 
 class DatabaseWrapper(object):
 
-    SCHEMA_VERSION = 6
+    SCHEMA_VERSION = 7
 
     def __init__(self, filename: str) -> None:
         self._filename: str = filename
@@ -89,6 +89,8 @@ class DatabaseWrapper(object):
                 migrate_schema_4_to_5(c)
             if from_version <= 5 and to_version >= 6:
                 migrate_schema_5_to_6(c)
+            if from_version <= 6 and to_version >= 7:
+                migrate_schema_6_to_7(c)
 
     def connect(self) -> None:
         if self.is_connected():

matemat/webserver/pagelets/admin.py

@@ -75,6 +75,7 @@ def handle_change(args: FormsDict, files: FormsDict, user: User, db: MatematData
                 return
             username = str(args.username)
             email = str(args.email)
+            logout_after_purchase = 'logout_after_purchase' in args
             # An empty e-mail field should be interpreted as NULL
             if len(email) == 0:
                 email = None
@@ -84,7 +85,8 @@ def handle_change(args: FormsDict, files: FormsDict, user: User, db: MatematData
                 return
             # Attempt to update username, e-mail and receipt preference
             try:
-                db.change_user(user, agent=None, name=username, email=email, receipt_pref=receipt_pref)
+                db.change_user(user, agent=None, name=username, email=email, receipt_pref=receipt_pref,
+                               logout_after_purchase=logout_after_purchase)
             except DatabaseConsistencyError:
                 return
 
@@ -176,8 +178,10 @@ def handle_admin_change(args: FormsDict, files: FormsDict, db: MatematDatabase):
             password = str(args.password)
             is_member = 'ismember' in args
             is_admin = 'isadmin' in args
+            logout_after_purchase = 'logout_after_purchase' in args
             # Create the user in the database
-            newuser: User = db.create_user(username, password, email, member=is_member, admin=is_admin)
+            newuser: User = db.create_user(username, password, email, member=is_member, admin=is_admin,
+                                           logout_after_purchase=logout_after_purchase)
 
             # If a default avatar is set, copy it to the user's avatar path
 

matemat/webserver/pagelets/buy.py

@@ -16,6 +16,7 @@ def buy():
     # If no user is logged in, redirect to the main page, as a purchase must always be bound to a user
     if not session.has(session_id, 'authenticated_user'):
         redirect('/')
+    authlevel: int = session.get(session_id, 'authentication_level')
     # Connect to the database
     with MatematDatabase(config['DatabaseFile']) as db:
         # Fetch the authenticated user from the database
@@ -34,6 +35,9 @@ def buy():
                 stock_provider = c.get_stock_provider()
                 if stock_provider.needs_update():
                     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('/logout')
                 # Redirect to the main page (where this request should have come from)
                 redirect(f'/?lastaction=buy&lastproduct={pid}&lastprice={price}')
     redirect('/')

matemat/webserver/pagelets/moduser.py

@@ -111,6 +111,7 @@ def handle_change(args: FormsDict, files: FormsDict, user: User, authuser: User,
             balance_reason = None
         is_member = 'ismember' in args
         is_admin = 'isadmin' in args
+        logout_after_purchase = 'logout_after_purchase' in args
         # An empty e-mail field should be interpreted as NULL
         if len(email) == 0:
             email = None
@@ -121,7 +122,8 @@ def handle_change(args: FormsDict, files: FormsDict, user: User, authuser: User,
                 db.change_password(user, '', password, verify_password=False)
             # Write the user detail changes
             db.change_user(user, agent=authuser, name=username, email=email, is_member=is_member, is_admin=is_admin,
-                           balance=balance, balance_reason=balance_reason, receipt_pref=receipt_pref)
+                           balance=balance, balance_reason=balance_reason, receipt_pref=receipt_pref,
+                           logout_after_purchase=logout_after_purchase)
         except DatabaseConsistencyError:
             return
         # If a new avatar was uploaded, process it

templates/admin_all.html

@@ -23,6 +23,9 @@
         <label for="admin-myaccount-isadmin">Admin: </label>
         <input id="admin-myaccount-isadmin" type="checkbox" disabled="disabled" {% if authuser.is_admin %} checked="checked" {% endif %}/><br/>
 
+        <label for="admin-myaccount-logout-after-purchase">Logout after purchase: </label>
+        <input id="admin-myaccount-logout-after-purchase" type="checkbox" name="logout_after_purchase" {% if authuser.logout_after_purchase %} checked="checked" {% endif %}/><br/>
+
         <input type="submit" value="Save changes" />
     </form>
 </section>

templates/admin_restricted.html

@@ -17,6 +17,9 @@
         <label for="admin-newuser-isadmin">Admin: </label>
         <input id="admin-newuser-isadmin" type="checkbox" name="isadmin" /><br/>
 
+        <label for="admin-myaccount-logout-after-purchase">Logout after purchase: </label>
+        <input id="admin-myaccount-logout-after-purchase" type="checkbox" name="logout_after_purchase" /><br/>
+
         <input type="submit" value="Create User" />
     </form>
 </section>

templates/moduser.html

@@ -35,6 +35,9 @@
         <label for="moduser-account-isadmin">Admin: </label>
         <input id="moduser-account-isadmin" name="isadmin" type="checkbox" {% if user.is_admin %} checked="checked" {% endif %}/><br/>
 
+        <label for="admin-myaccount-logout-after-purchase">Logout after purchase: </label>
+        <input id="admin-myaccount-logout-after-purchase" type="checkbox" name="logout_after_purchase" {% if user.logout_after_purchase %} checked="checked" {% endif %}/><br/>
+
         <label for="moduser-account-balance">Balance: </label>
         CHF <input id="moduser-account-balance" name="balance" type="number" step="0.01" value="{{ user.balance|chf(False) }}" /><br/>