Make media items the centre for all moderation activity

api/api/models/__init__.py

@@ -2,13 +2,23 @@
 from api.models.audio import (
     AltAudioFile,
     Audio,
+    AudioDecision,
+    AudioDecisionThrough,
     AudioList,
     AudioReport,
     AudioSet,
     DeletedAudio,
     SensitiveAudio,
 )
-from api.models.image import DeletedImage, Image, ImageList, ImageReport, SensitiveImage
+from api.models.image import (
+    DeletedImage,
+    Image,
+    ImageDecision,
+    ImageDecisionThrough,
+    ImageList,
+    ImageReport,
+    SensitiveImage,
+)
 from api.models.media import (
     DEINDEXED,
     DMCA,

api/api/models/audio.py

@@ -251,6 +251,13 @@ def get_or_create_waveform(self):
     class Meta(AbstractMedia.Meta):
         db_table = "audio"
 
+    def get_absolute_url(self):
+        """Enable the "View on site" link in the Django Admin."""
+
+        from django.urls import reverse
+
+        return reverse("image-detail", args=[str(self.identifier)])
+
 
 class DeletedAudio(AbstractDeletedMedia):
     """

api/api/models/image.py

@@ -54,6 +54,13 @@ class Image(ImageFileMixin, AbstractMedia):
     class Meta(AbstractMedia.Meta):
         db_table = "image"
 
+    def get_absolute_url(self):
+        """Enable the "View on site" link in the Django Admin."""
+
+        from django.urls import reverse
+
+        return reverse("image-detail", args=[str(self.identifier)])
+
     @property
     def sensitive(self) -> bool:
         return hasattr(self, "sensitive_image")

api/api/models/moderation.py

@@ -1,5 +1,7 @@
 from django.conf import settings
+from django.contrib.auth import get_user_model
 from django.db import models
+from django.db.models import Q
 from django.db.models.signals import post_save
 from django.dispatch import receiver
 
@@ -9,7 +11,7 @@ class UserPreferences(models.Model):
     preferences = models.JSONField(default=dict)
 
     def __str__(self):
-        return f"{self.user.username}'s preferences"
+        return f"{self.user.get_username()}'s preferences"
 
     @property
     def moderator(self):
@@ -36,3 +38,17 @@ def create_or_update_user_profile(sender, instance, created, **kwargs):
     if created:
         UserPreferences.objects.create(user=instance)
     instance.userpreferences.save()
+
+
+def get_moderators() -> models.QuerySet:
+    """
+    Get all users who either are members of the "Content Moderators"
+    group or have superuser privileges.
+
+    :return: a ``QuerySet`` of ``User``s who can perform moderation
+    """
+
+    User = get_user_model()
+    return User.objects.filter(
+        Q(groups__name="Content Moderators") | Q(is_superuser=True)
+    )

api/api/templates/admin/api/components/media_additional.html

@@ -0,0 +1,69 @@
+{% comment %}
+Props:
+- media_type
+- media_obj
+- tags
+{% endcomment %}
+
+<fieldset class="module aligned">
+  <h2>Additional information</h2>
+
+  <div class="form-row field-height">
+    <div>
+      <div class="flex-container">
+        <label>Preview</label>
+        {% if media_type == 'image' %}
+        <div class="overflow-hidden">
+          <img
+            src="{% url media_type|add:'-thumb' identifier=media_obj.identifier %}"
+            alt="Media Image"
+            class="transition-filter blur-60px"
+            height="300"
+            onclick="toggleBlur(this)"
+            onerror="this.onerror=null;this.src='{{ media_obj.url }}';">
+        </div>
+        <style>
+          .overflow-hidden { overflow: hidden; }
+          .transition-filter { transition: filter 0.3s; }
+          .blur-60px { filter: blur(60px); }
+        </style>
+        <script>
+          function toggleBlur(img) {
+            img.classList.toggle('blur-60px');
+          }
+        </script>
+
+        {% elif media_type == 'audio' %}
+        <audio controls>
+          <source src="{{ media_obj.url }}">
+          Your browser does not support the audio element.
+        </audio>
+        {% endif %}
+      </div>
+      <div class="help">
+        {% if media_type == 'image' %}
+        <div>Click to show/hide content.</div>
+        {% endif %}
+      </div>
+    </div>
+  </div>
+
+  <div class="form-row field-height">
+    <div>
+      <div class="flex-container">
+        <label>Tags</label>
+        <div>
+          <dl class="pl-0">
+            {% for provider, provider_tags in tags.items %}
+            <dt>{{ provider }}:</dt>
+            <dd>{{ provider_tags|join:', ' }}</dd>
+            {% endfor %}
+          </dl>
+          <style>
+            dl.pl-0 { padding-left: 0; }
+          </style>
+        </div>
+      </div>
+    </div>
+  </div>
+</fieldset>

api/api/templates/admin/api/components/media_decisions.html

@@ -0,0 +1,55 @@
+{% comment %}
+Props:
+- media_type
+- decision_throughs
+{% endcomment %}
+
+{% load get_attr %}
+
+<fieldset class="module">
+  <h2>Decisions</h2>
+
+  <table class="w-full">
+    <thead>
+      <tr>
+        <th class="hidden"></th>
+        <th>ID</th>
+        <th>Date</th>
+        <th>Moderator</th>
+        <th>Action</th>
+        <th>Notes</th>
+        <th>Reports</th>
+      </tr>
+    </thead>
+    <tbody>
+      {% for decision_through in decision_throughs %}
+      {% with decision_through.decision as decision %}
+      <tr>
+        <td class="hidden"><!-- Hidden inputs etc. --></td>
+        <td>
+          <a href="{% url 'admin:api_'|add:media_type|add:'decision_change' decision.id %}">{{ decision.id }}</a>
+        </td>
+        <td>{{ decision.created_on }}</td>
+        <td>{{ decision.moderator }}</td>
+        <td>{{ decision.action }}</td>
+        <td>{{ decision.notes }}</td>
+        <td>
+          {% with media_type|add:'report_set' as attr_name %}
+          {% with decision|get_attr:attr_name as reports %}
+          {% for report in reports.all %}
+            <a href="{% url 'admin:api_'|add:media_type|add:'report_change' report.id %}">{{ report.id }}</a> ({{report.reason}})<br/>
+          {% endfor %}
+          {% endwith %}
+          {% endwith %}
+        </td>
+      </tr>
+      {% endwith %}
+      {% endfor %}
+    </tbody>
+  </table>
+
+  <style>
+    .hidden { display: none; }
+    .w-full { width: 100%; }
+  </style>
+</fieldset>

api/api/templates/admin/api/components/media_reports.html

@@ -0,0 +1,106 @@
+{% comment %}
+Props:
+- media_type
+- reports
+- pending_report_count
+- mod_form
+{% endcomment %}
+
+<fieldset class="module aligned">
+  <h2>Reports</h2>
+
+  {% if pending_report_count %}
+  <p>
+    You can take a decision for the pending reports by selecting one
+    or more of them and creating a decision.
+  </p>
+  {% endif %}
+  <table class="w-full">
+    <thead>
+      <tr>
+        <th class="hidden"></th>
+        {% if pending_report_count %}<th>Select</th>{% endif %}
+        <th>ID</th>
+        <th>Date</th>
+        <th>Reason</th>
+        <th>Description</th>
+        <th>Is pending?</th>
+        <th>Decision</th>
+      </tr>
+    </thead>
+    <tbody>
+      {% for report in reports %}
+      <tr>
+        <td class="hidden"><!-- Hidden inputs etc. --></td>
+        {% if pending_report_count %}
+        <td>
+          {% if report.is_pending %}
+          <input
+            form="decision-create"
+            type="checkbox"
+            name="report_id"
+            value="{{ report.id }}"
+            class="action-select">
+          {% endif %}
+        </td>
+        {% endif %}
+        <td>
+          <a href="{% url 'admin:api_'|add:media_type|add:'report_change' report.id %}">{{ report.id }}</a>
+        </td>
+        <td>{{ report.created_at }}</td>
+        <td>{{ report.reason }}</td>
+        <td>{{ report.description }}</td>
+        <td>
+          {% if report.is_pending %}
+          <img src="/static/admin/img/icon-yes.svg" alt="False">
+          {% else %}
+          <img src="/static/admin/img/icon-no.svg" alt="False">
+          {% endif %}
+        </td>
+        <td>
+          {% if report.decision %}
+          <a href="{% url 'admin:api_'|add:media_type|add:'decision_change' report.decision.id %}">{{ report.decision.id }}</a>
+          ({{ report.decision.action }})
+          {% else %}
+          -
+          {% endif %}
+        </td>
+      </tr>
+      {% endfor %}
+    </tbody>
+  </table>
+
+  <style>
+    .hidden { display: none; }
+    .w-full { width: 100%; }
+  </style>
+  {% if pending_report_count %}
+  <div class="form-row field-height">
+    <div>
+      <div class="flex-container">
+        <label>Action</label>
+        <div>
+          {{ mod_form.action }}
+        </div>
+      </div>
+    </div>
+  </div>
+
+  <div class="form-row field-height">
+    <div>
+      <div class="flex-container">
+        <label>Notes</label>
+        <div>{{ mod_form.notes }}</div>
+      </div>
+    </div>
+  </div>
+
+  <div class="p-10px">
+    <input form="decision-create" type="submit" value="Create decision">
+  </div>
+  {% endif %}
+</fieldset>
+
+<style>
+  .p-10px { padding: 10px; }
+</style>

api/api/templates/admin/api/media/change_form.html

@@ -0,0 +1,60 @@
+{% extends "admin/change_form.html" %}
+
+{% block extrahead %}{{ block.super }}
+<!--
+  This script make links clickable. Since we've stored URLs in
+  `TextField`s, they are not rendered as links in the Django Admin UI.
+  This script identifies `<div>`s containing links and converts them to
+  `<a>` tags.
+-->
+<script>
+  document.addEventListener("DOMContentLoaded", function() {
+    document.querySelectorAll("div.readonly").forEach(div => {
+      if (div.textContent.match(/https?:\/\/\S+/)) {
+        div.innerHTML = div.textContent.replace(/(https?:\/\/\S+)/g, '<a href="$1">$1</a>');
+      }
+    });
+  });
+</script>
+
+<!--
+  This script polls the soft-lock endpoint at intervals shorter than the
+  lock TTL to keep the lock alive.
+-->
+<script>
+  function softLock() {
+    fetch('{% url "admin:api_"|add:media_type|add:"_lock" object_id=object_id %}', {
+      method: "POST",
+      keepalive: true, // This makes the request equivalent to a beacon.
+      headers: {
+        "Content-Type": "application/json",
+        "X-CSRFToken": document.querySelector('[name="csrfmiddlewaretoken"]').value
+      },
+    })
+  }
+
+  document.addEventListener("DOMContentLoaded", function() {
+    softLock()
+    setInterval(softLock, 5000)
+  })
+</script>
+{% endblock %}
+
+{% block content %}{{ block.super }}
+<!-- Fields for this form are supplied separately in `media_reports.html`. -->
+{% if pending_report_count %}
+<form id="decision-create" method="POST" action="{% url 'admin:api_'|add:media_type|add:'_moderate' object_id %}">
+  {% csrf_token %}
+</form>
+{% endif %}
+{% endblock %}
+
+{% block object-tools-items %}{{ block.super }}
+<li><a href="https://openverse.org/{{media_type}}/{{media_obj.identifier}}" class="viewsitelink">View on openverse.org</a></li>
+{% endblock %}
+
+{% block after_field_sets %}
+{% include 'admin/api/components/media_additional.html' with media_type=media_type media_obj=media_obj tags=tags only %}
+{% include 'admin/api/components/media_decisions.html' with media_type=media_type decision_throughs=decision_throughs only %}
+{% include 'admin/api/components/media_reports.html' with media_type=media_type reports=reports pending_report_count=pending_report_count mod_form=mod_form only %}
+{% endblock %}