Allow users to delete their own comments

app/assets/stylesheets/layout.scss

@@ -1940,6 +1940,20 @@ table {
     }
   }
 
+  .delete-comment {
+    @include has-fa-icon(trash-alt, regular);
+    color: $delete;
+
+    &:hover,
+    &:active {
+      color: $link-hover;
+    }
+
+    &::before {
+      transform: translateY(-1px);
+    }
+  }
+
   .comment-user {
     margin-top: $line-height / 4;
     padding: $line-height / 4 0;

app/controllers/comments_controller.rb

@@ -1,5 +1,5 @@
 class CommentsController < ApplicationController
-  before_action :authenticate_user!, only: :create
+  before_action :authenticate_user!, only: [:create, :hide]
   before_action :load_commentable, only: :create
   before_action :verify_resident_for_commentable!, only: :create
   before_action :verify_comments_open!, only: [:create, :vote]
@@ -46,6 +46,11 @@ class CommentsController < ApplicationController
     render "shared/_refresh_flag_actions", locals: { flaggable: @comment, divider: true }
   end
 
+  def hide
+    @comment.hide
+    set_comment_flags(@comment.subtree)
+  end
+
   private
 
     def comment_params

app/models/abilities/common.rb

@@ -49,6 +49,8 @@ module Abilities
       can [:create, :created], Proposal
       can :create, Legislation::Proposal
 
+      can :hide, Comment, user_id: user.id
+
       can :suggest, Debate
       can :suggest, Proposal
       can :suggest, Legislation::Proposal

app/models/abilities/moderation.rb

@@ -12,7 +12,6 @@ module Abilities
       can :read, Comment
 
       can :hide, Comment, hidden_at: nil
-      cannot :hide, Comment, user_id: user.id
 
       can :ignore_flag, Comment, ignored_flag_at: nil, hidden_at: nil
       cannot :ignore_flag, Comment, user_id: user.id

app/views/comments/_actions.html.erb

@@ -5,8 +5,15 @@
 <span class="js-moderation-actions">
   <% if can? :hide, comment %>
     <span class="divider">&nbsp;&bull;&nbsp;</span>
-    <%= link_to t("admin.actions.hide").capitalize, hide_moderation_comment_path(comment),
-                method: :put, remote: true, data: { confirm: t("admin.actions.confirm") } %>
+    <% if comment.author == current_user %>
+      <%= link_to t("comments.actions.delete"),
+                  hide_comment_path(comment),
+                  method: :put, remote: true, class: "delete-comment",
+                  data: { confirm: t("comments.actions.confirm_delete") } %>
+    <% else %>
+      <%= link_to t("admin.actions.hide").capitalize, hide_moderation_comment_path(comment),
+                  method: :put, remote: true, data: { confirm: t("admin.actions.confirm") } %>
+    <% end %>
   <% end %>
 
   <% if can? :hide, comment.user %>

app/views/comments/hide.js.erb

@@ -0,0 +1 @@
+$("#<%= dom_id(@comment) %>").replaceWith("<%= j render("comment", comment: @comment) %>");