feat: improved functionality of admin view for BabyServer (#103)

(cherry picked from commit 367671922deb9a77ed554bf93b5b28945ca25661)

Author: corp-0

src/baby_serverlist/admin.py

@@ -1,10 +1,26 @@
 from django.contrib import admin
+from django.http import HttpRequest, HttpResponse, HttpResponseRedirect
 
 from .models import BabyServer
 
 
 @admin.register(BabyServer)
 class BabyServerAdmin(admin.ModelAdmin):
-    list_display = ("id", "owner", "whitelisted", "serverlist_token")
+    list_display = ("id", "owner", "whitelisted", "serverlist_token_display")
     search_fields = ("id", "owner__email", "owner__unique_identifier")
     list_filter = ("whitelisted",)
+    readonly_fields = ("serverlist_token",)
+    change_form_template = "admin/baby_serverlist/babyserver/change_form.html"
+
+    @admin.display(description="Server token", ordering="serverlist_token")
+    def serverlist_token_display(self, obj: BabyServer) -> str:
+        # Return the full token so it can be copied without Django's default truncation.
+        return obj.serverlist_token
+
+    def response_change(self, request: HttpRequest, obj: BabyServer) -> HttpResponse:
+        if "_regenerate_token" in request.POST:
+            obj.serverlist_token = obj.generate_serverlist_token()
+            obj.save(update_fields=["serverlist_token"])
+            self.message_user(request, "Server token regenerated.")
+            return HttpResponseRedirect(request.path)
+        return super().response_change(request, obj)

src/templates/admin/baby_serverlist/babyserver/change_form.html

@@ -0,0 +1,17 @@
+{% extends "admin/change_form.html" %}
+{% load i18n %}
+
+{% block object-tools-items %}
+    {{ block.super }}
+    {% if original %}
+        <li>
+            <button type="submit"
+                    form="{{ opts.model_name }}_form"
+                    class="button"
+                    name="_regenerate_token"
+                    value="1">
+                {% trans "Regenerate token" %}
+            </button>
+        </li>
+    {% endif %}
+{% endblock %}