feat(roster): lookup by discord username

This is super annoying to test so we'll just test on prod lol

otisweb/templates/sidebar.html

@@ -156,6 +156,9 @@ <h3>Admin controls</h3>
         <li>
           <a href="{% url "admin-palace-list" %}">Ruby Palace</a>
         </li>
+        <li>
+          <a href="{% url "discord-lookup" %}">Discordo</a>
+        </li>
         <li>Giga Chart</li>
         <ul>
           <li>

roster/forms.py

@@ -177,3 +177,7 @@ class LinkAssistantForm(forms.Form):
         ),
         label="Student to claim",
     )
+
+
+class DiscordLookupForm(forms.Form):
+    discord_handle = forms.CharField()

roster/templates/roster/discord_lookup.html

@@ -0,0 +1,6 @@
+{% extends "layout.html" %}
+{% block title %}Discord Lookup{% endblock %}
+{% block layout-content %}
+  <p>Look up a student by Discord username.</p>
+  {% include "generic_form.html" with submit_name="Search" %}
+{% endblock layout-content %}

roster/urls.py

@@ -28,4 +28,5 @@
     path(r"mystery-unlock/harder/", views.unlock_rest_of_mystery, kwargs={"delta": 2}),
     path(r"instructors/", views.StudentAssistantList.as_view(), name="instructors"),
     path(r"link-assistant/", views.link_assistant, name="link-assistant"),
+    path(r"discord-lookup/", views.discord_lookup, name="discord-lookup"),
 ]

roster/views.py

@@ -57,6 +57,7 @@
     AdvanceForm,
     CurriculumForm,
     DecisionForm,
+    DiscordLookupForm,
     InquiryForm,
     UserForm,
 )
@@ -693,3 +694,37 @@ def link_assistant(request: HttpRequest) -> HttpResponse:
     }
 
     return render(request, "roster/link_assistant.html", context)
+
+
+@admin_required
+def discord_lookup(request: HttpRequest) -> HttpResponse:
+    if request.method == "POST":
+        form = DiscordLookupForm(request.POST)
+        if form.is_valid():
+            discord_handle = form.cleaned_data["discord_handle"]
+            try:
+                sa = SocialAccount.objects.get(
+                    provider="discord",
+                    extra_data__contains=[{"username": discord_handle}],
+                )
+            except SocialAccount.DoesNotExist:
+                messages.error(request, f"Could not find {discord_handle}.")
+            except SocialAccount.MultipleObjectsReturned:
+                messages.error(
+                    request,
+                    f"Somehow found multiple social accounts for {discord_handle}.",
+                )
+            else:
+                user = sa.user
+                student = Student.objects.filter(user=user).order_by("-pk").first()
+                if student is not None:
+                    return HttpResponse(redirect_to=student.get_absolute_url())
+                else:
+                    return HttpResponse(
+                        reverse("admin:auth_user_change", args=(user.pk,))
+                    )
+
+    else:
+        form = DiscordLookupForm()
+    context = {"form": form}
+    return render(request, "roster/discord_lookup.html", context)