Revert "Remove admin view"

This reverts commit a62e2bd9f7.

app/admin.py

@@ -0,0 +1,36 @@
+"Haldis admin related views and models"
+
+import flask_login as login
+from flask import Flask
+from flask_admin import Admin
+from flask_admin.contrib.sqla import ModelView
+from flask_sqlalchemy import SQLAlchemy
+
+from models import Order, OrderItem, OrderItemChoice, User
+
+
+class ModelBaseView(ModelView):
+    "Base model for admin related things"
+    # pylint: disable=R0201, R0903
+    def is_accessible(self) -> bool:
+        "Check if the user has admin permission"
+        if login.current_user.is_anonymous():
+            return False
+        return login.current_user.is_admin()
+
+
+class UserAdminModel(ModelBaseView):
+    "Model for user admin"
+    # pylint: disable=R0903
+    column_searchable_list = ("username",)
+    inline_models = None
+
+
+def init_admin(app: Flask, database: SQLAlchemy) -> None:
+    "Initialize the admin related things in the app."
+    admin = Admin(app, name="Haldis", url="/admin", template_mode="bootstrap3")
+
+    admin.add_view(UserAdminModel(User, database.session))
+    admin.add_view(ModelBaseView(Order, database.session))
+    admin.add_view(ModelBaseView(OrderItem, database.session))
+    admin.add_view(ModelBaseView(OrderItemChoice, database.session))

app/app.py

@@ -19,6 +19,7 @@ from flask_oauthlib.client import OAuth, OAuthException
 from flask_script import Manager, Server
 from markupsafe import Markup
 
+from admin import init_admin
 from login import init_login
 from models import db
 from models.anonymous_user import AnonymouseUser
@@ -68,6 +69,8 @@ def register_plugins(app: Flask) -> Manager:
     app_manager = Manager(app)
     app_manager.add_command("db", MigrateCommand)
     app_manager.add_command("runserver", Server(port=8000))
+    # Add admin interface
+    init_admin(app, db)
 
     # Init login manager
     login_manager = LoginManager()

app/templates/layout.html

@@ -9,6 +9,9 @@
 	('general_bp.about', 'About'),
 	('stats_blueprint.stats', 'Stats'),
 ] -%}
+{% if not current_user.is_anonymous() and current_user.is_admin() -%}
+    {% set navbar = navbar + [('admin.index', 'Admin')] -%}
+{% endif -%}
 {% set active_page = active_page|default('index') -%}
 
 {% block title %}