From 98ed925cdebf9c977f481240ff193f42742a1765 Mon Sep 17 00:00:00 2001
From: Alexander Malzkuhn <alexander.malzkuhn@gmail.com>
Date: Fri, 18 Apr 2025 23:15:22 +0200
Subject: [PATCH] Grundlegende Login Funktion

Grundlegende Loginfunktionen
Admin Maske begonnen
---
 settings.json |  4 +++
 web_ui.py     | 75 ++++++++++++++++++++++++++++++++++++++++++++++++---
 2 files changed, 75 insertions(+), 4 deletions(-)
 create mode 100644 settings.json

diff --git a/settings.json b/settings.json
new file mode 100644
index 0000000..3b990e4
--- /dev/null
+++ b/settings.json
@@ -0,0 +1,4 @@
+{
+  "admin_user": "admin",
+  "admin_password": "123456"
+}
\ No newline at end of file
diff --git a/web_ui.py b/web_ui.py
index 59d5ce6..32ff281 100644
--- a/web_ui.py
+++ b/web_ui.py
@@ -1,11 +1,78 @@
-from gi.overrides.keysyms import value
-from nicegui import ui, events
+from nicegui import ui, app
 from users import *
 from definitions import *
+import hashlib
+
+def cookie_hash(user, password):
+    return hashlib.sha256(b"{user}{app.storage.user['id']}{password}").hexdigest()
+
+def adminsettings():
+    # Settingsdatei einlesen
+    try:
+        with open(f"{scriptpath}/{usersettingsfilename}") as json_file:
+            data = json.load(json_file)
+        json_file.close()
+        return(data)
+    except:
+        return(-1)
 
 @ui.page('/login')
 def page_login():
-    ui.label('Loginseite')
+
+    # Settingsdatei einlesen
+    data = adminsettings()
+
+    def login():
+        nonlocal data
+
+        if username.value == data["admin_user"]:
+            if password.value == data["admin_password"]:
+                active_login = cookie_hash(data["admin_user"], data["admin_password"])
+                app.storage.user['secret'] = active_login
+                ui.navigate.to("/admin")
+            else:
+                ui.notify("Login fehlgeschlagen")
+
+    ui.markdown(f"## {app_title} {app_version}")
+    ui.markdown("Bitte einloggen")
+    with ui.grid(columns=2):
+        ui.markdown("Benutzer:")
+        username = ui.input('Benutzername')
+        ui.markdown("Passwort:")
+        password = ui.input('Passwort', password=True)
+        ui.button(text="Login", on_click=lambda: login())
+
+@ui.page('/admin')
+def page_admin():
+    data = adminsettings()
+    active_login = cookie_hash(data["admin_user"], data["admin_password"])
+    try:
+        browser_cookie = app.storage.user['secret']
+    except:
+        browser_cookie = ""
+
+    # Adminseite
+    if browser_cookie == active_login:
+        ui.markdown(f"##{app_title} {app_version}")
+        ui.markdown("###Administrator Benutzer")
+        with ui.grid(columns=2):
+            ui.label("Benutzername des Adminstrators")
+            admin_user = ui.input()
+            admin_user.value = data["admin_user"]
+            ui.label("Passwort des Adminsistrators")
+            admin_password = ui.input(password=True)
+            admin_password.value = data["admin_password"]
+
+        ui.markdown("###Benutzerverwaltung")
+        userlist = list_users()
+        with ui.grid(columns=2):
+            for name in userlist:
+                ui.label(name)
+                ui.button("Löschen")
+
+    # Alternativ zur Loginseite navigieren
+    else:
+        ui.navigate.to("/login")
 
 @ui.page('/stamping')
 def page_stamping():
@@ -72,6 +139,6 @@ def page_userlist():
         button = ui.button(text=name, on_click=lambda name=name:click_button(name) )
         buttons[name] = button
 
-ui.run(port=8090)
+ui.run(port=8090, storage_secret="test")