posts: rework post events page.

* Add a global /post_events page that shows the history of all approvals,
  disapprovals, flags, appeals, and replacements on a single page.

* Redesign the /posts/:id/events page to show all approval, disapproval,
  flag, appeal, and replacement events for a single post (before it only
  showed approvals, flags, and appeals).

* Remove the replacement history link from the post show page. Replacements
  are now included in the post events page (closes #4948: Highlighed replacements).

* Add /post_approvals/:id and /post_replacements/:id routes (these are
  used by the "Details" link on the post events page).

app/views/post_appeals/index.html.erb

@@ -43,3 +43,5 @@
     <%= numbered_paginator(@post_appeals) %>
   </div>
 </div>
+
+<%= render "post_events/secondary_links" %>

app/views/post_approvals/index.html.erb

@@ -23,3 +23,5 @@
     <%= numbered_paginator(@post_approvals) %>
   </div>
 </div>
+
+<%= render "post_events/secondary_links" %>

app/views/post_disapprovals/index.html.erb

@@ -39,3 +39,5 @@
     <%= numbered_paginator(@post_disapprovals) %>
   </div>
 </div>
+
+<%= render "post_events/secondary_links" %>

app/views/post_events/_secondary_links.html.erb

@@ -0,0 +1,17 @@
+<% content_for(:secondary_links) do %>
+  <% case controller_name %>
+  <% when "post_approvals" %>
+    <%= quick_search_form_for(:user_name, post_approvals_path, "user", autocomplete: "user") %>
+  <% when "post_disapprovals" %>
+    <%= quick_search_form_for(:user_name, post_disapprovals_path, "user", autocomplete: "user") %>
+  <% else %>
+    <%= quick_search_form_for(:creator_name, url_for, "user", autocomplete: "user") %>
+  <% end %>
+
+  <%= subnav_link_to "Events", post_events_path %>
+  <%= subnav_link_to "Appeals", post_appeals_path %>
+  <%= subnav_link_to "Approvals", post_approvals_path %>
+  <%= subnav_link_to "Disapprovals", post_disapprovals_path %>
+  <%= subnav_link_to "Flags", post_flags_path %>
+  <%= subnav_link_to "Replacements", post_replacements_path %>
+<% end %>

app/views/post_events/index.html.erb

@@ -1,25 +1,106 @@
 <div id="c-post-events">
   <div id="a-index">
-    <h1>Post Events</h1>
+    <% if @post %>
+      <h1>Events: <%= link_to @post.dtext_shortlink, @post %></h1>
+      <%= link_to "« Back", post_events_path, class: "text-xs" %>
+    <% else %>
+      <h1>Events</h1>
+    <% end %>
 
-    <%= table_for @events, class: "striped autofit", width: "100%" do |t| %>
-      <% t.column :type_name, name: "Type" %>
-      <% t.column "Description", td: { class: "col-expand" } do |event| %>
-        <div class="prose">
-          <%= format_text event.reason %>
-        </div>
+    <% unless @post %>
+      <%= search_form_for(post_events_path) do |f| %>
+        <%= f.input :creator_name, label: "User", input_html: { value: params[:search][:creator_name], "data-autocomplete": "user" } %>
+        <%= f.input :post_tags_match, label: "Tags", input_html: { value: params[:search][:post_tags_match], "data-autocomplete": "tag-query" } %>
+        <%= f.input :model_type, label: "Category", collection: PostEvent.model_types.map { |type| [type.titleize.delete_prefix("Post "), type] }, include_blank: true, selected: params[:search][:model_type] %>
+        <%= f.input :order, collection: [%w[Newest event_at], %w[Oldest event_at_asc]], include_blank: true, selected: params[:search][:order] %>
+        <%= f.submit "Search" %>
       <% end %>
-      <% t.column "Status" do |event| %>
-        <%= event.status %>
+    <% end %>
+
+    <%= table_for @post_events, class: "striped autofit mt-4", width: "100%" do |t| %>
+      <% t.column "Event", td: { class: "col-expand" } do |event| %>
+        <% post = event.post %>
+        <% model = event.model %>
+        <% creator = event.creator %>
+
+        <% case event.model_type %>
+        <% when "Post" %>
+          <%= link_to post.dtext_shortlink, post %> was uploaded by <%= link_to_user creator %>.
+        <% when "PostAppeal" %>
+          <div class="prose">
+            <%= link_to post.dtext_shortlink, post %> was appealed by <%= link_to_user creator %><%= " (#{format_text(model.reason.strip.chomp("."), inline: true)})".html_safe if model.reason.present? %>.
+          </div>
+        <% when "PostApproval" %>
+          <%= link_to post.dtext_shortlink, post %> was approved by <%= link_to_user creator %>.
+        <% when "PostDisapproval" %>
+          <div class="prose">
+            <% if policy(model).can_view_creator? %>
+              <%= link_to post.dtext_shortlink, post %> was disapproved by <%= link_to_user creator %> (<%= model.reason.titleize.downcase %><%= ": ".html_safe + format_text(model.message.strip.chomp("."), inline: true) if model.message.present? %>).
+            <% else %>
+              <%= link_to post.dtext_shortlink, post %> was disapproved (<%= model.reason.titleize.downcase %><%= ": ".html_safe + format_text(model.message.strip.chomp("."), inline: true) if model.message.present? %>).
+            <% end %>
+          </div>
+        <% when "PostFlag" %>
+          <div class="prose">
+            <% if policy(model).can_view_flagger? %>
+              <%= link_to post.dtext_shortlink, post %> was flagged by <%= link_to_user creator %> (<%= format_text(model.reason.strip.chomp("."), inline: true) %>).
+            <% else %>
+              <%= link_to post.dtext_shortlink, post %> was flagged (<%= format_text(model.reason.strip.chomp("."), inline: true) %>).
+            <% end %>
+          </div>
+        <% when "PostReplacement" %>
+          <% if model.old_file_size && model.old_file_ext && model.old_image_width && model.old_image_height && model.file_size && model.file_ext && model.image_width && model.image_height %>
+            <%= link_to post.dtext_shortlink, post %> was replaced by <%= link_to_user creator %>
+            (<%= external_link_to model.original_url.presence || "none", Source::URL.site_name(model.original_url) || model.original_url %>,
+            <%= model.old_file_size.to_formatted_s(:human_size, precision: 4) %> .<%= model.old_file_ext %>, <%= model.old_image_width %>x<%= model.old_image_height %> ->
+            <%= external_link_to model.replacement_url, Source::URL.site_name(model.replacement_url) || model.replacement_url %>,
+            <%= model.file_size.to_formatted_s(:human_size, precision: 4) %> .<%= model.file_ext %>, <%= model.image_width %>x<%= model.image_height %>).
+          <% else %>
+            <%= link_to post.dtext_shortlink, post %> was replaced by <%= link_to_user creator %>
+            (<%= external_link_to model.original_url.presence || "none", Source::URL.site_name(model.original_url) || model.original_url %> ->
+            <%= external_link_to model.replacement_url, Source::URL.site_name(model.replacement_url) || model.replacement_url %>).
+          <% end %>
+        <% end %>
       <% end %>
+
+      <% t.column "Category" do |event| %>
+        <%= link_to event.model_type.titleize.delete_prefix("Post "), post_events_path(search: { model_type: event.model_type, **search_params }) %>
+      <% end %>
+
       <% t.column "User" do |event| %>
-        <% if event.is_creator_visible? %>
-          <%= link_to_user event.creator %>
+        <% if policy(event).can_see_creator? %>
+          <%= link_to_user event.creator %> <%= link_to "»", post_events_path(search: { **search_params, creator_name: event.creator.name }) %>
         <% else %>
           <i>hidden</i>
         <% end %>
-        <br><%= time_ago_in_words_tagged event.created_at %>
+        <div><%= time_ago_in_words_tagged(event.event_at) %></div>
+      <% end %>
+
+      <% t.column column: "control" do |event| %>
+        <%= render PopupMenuComponent.new do |menu| %>
+          <% unless @post %>
+            <% menu.item do %>
+              <%= link_to "Post history", post_post_events_path(event.post) %>
+            <% end %>
+          <% end %>
+
+          <% if policy(event).can_see_creator? %>
+            <% menu.item do %>
+              <%= link_to "User history", post_events_path(search: { creator_name: event.creator.name }) %>
+            <% end %>
+          <% end %>
+
+          <% if policy(event).can_see_creator? %>
+            <% menu.item do %>
+              <%= link_to "Details", event.model %>
+            <% end %>
+          <% end %>
+        <% end %>
       <% end %>
     <% end %>
+
+    <%= numbered_paginator(@post_events) %>
   </div>
 </div>
+
+<%= render "secondary_links" %>

app/views/post_flags/index.html.erb

@@ -48,3 +48,5 @@
     <%= numbered_paginator(@post_flags) %>
   </div>
 </div>
+
+<%= render "post_events/secondary_links" %>

app/views/post_replacements/index.html.erb

@@ -66,3 +66,5 @@
     <%= numbered_paginator(@post_replacements) %>
   </div>
 </div>
+
+<%= render "post_events/secondary_links" %>

app/views/posts/show.html.erb

@@ -188,9 +188,8 @@
       <li id="post-history-tags"><%= link_to "Tags", post_versions_path(search: { post_id: @post.id }) %></li>
       <li id="post-history-pools"><%= link_to "Pools", pool_versions_path(search: { post_id: @post.id }) %></li>
       <li id="post-history-notes"><%= link_to "Notes", note_versions_path(search: { post_id: @post.id }) %></li>
-      <li id="post-history-moderation"><%= link_to "Moderation", post_events_path(@post.id) %></li>
+      <li id="post-history-moderation"><%= link_to "Moderation", post_post_events_path(@post.id) %></li>
       <li id="post-history-commentary"><%= link_to "Commentary", artist_commentary_versions_path(search: { post_id: @post.id }) %></li>
-      <li id="post-history-replacements"><%= link_to "Replacements", post_replacements_path(search: {post_id: @post.id }) %></li>
     </ul>
   </section>
 <% end %>

app/views/static/site_map.html.erb

@@ -18,9 +18,10 @@
       <ul>
         <li><h2>Post Events</h2></li>
         <li><%= link_to("Tag History", post_versions_path) %></li>
+        <li><%= link_to("Events", post_events_path) %></li>
+        <li><%= link_to("Appeals", post_appeals_path) %></li>
         <li><%= link_to("Approvals", post_approvals_path) %></li>
         <li><%= link_to("Disapprovals", post_disapprovals_path) %></li>
-        <li><%= link_to("Appeals", post_appeals_path) %></li>
         <li><%= link_to("Flags", post_flags_path) %></li>
         <li><%= link_to("Replacements", post_replacements_path) %></li>
       </ul>