Show hidden comments to moderators if requested

app/controllers/api/changesets_controller.rb

@@ -6,6 +6,7 @@ class ChangesetsController < ApiController
 
     before_action :check_api_writable, :only => [:create, :update, :upload, :subscribe, :unsubscribe]
     before_action :check_api_readable, :except => [:create, :update, :upload, :download, :query, :subscribe, :unsubscribe]
+    before_action :setup_user_auth, :only => [:show]
     before_action :authorize, :only => [:create, :update, :upload, :close, :subscribe, :unsubscribe]
 
     authorize_resource
@@ -24,7 +25,11 @@ class ChangesetsController < ApiController
     # return anything about the nodes, ways and relations in the changeset.
     def show
       @changeset = Changeset.find(params[:id])
-      @include_discussion = params[:include_discussion].presence
+      if params[:include_discussion].presence
+        @comments = @changeset.comments
+        @comments = @comments.unscope(:where => :visible) if params[:show_hidden_comments].presence && can?(:restore, ChangesetComment)
+        @comments = @comments.includes(:author)
+      end
       render "changeset"
 
       respond_to do |format|

app/views/api/changesets/_changeset.json.jbuilder

@@ -21,9 +21,10 @@ end
 
 json.tags changeset.tags unless changeset.tags.empty?
 
-if @include_discussion
-  json.comments(changeset.comments) do |comment|
+if @comments
+  json.comments(@comments) do |comment|
     json.id comment.id
+    json.visible comment.visible
     json.date comment.created_at.xmlschema
     if comment.author.data_public?
       json.uid comment.author.id

app/views/api/changesets/_changeset.xml.builder

@@ -24,12 +24,13 @@ xml.changeset(attrs) do |changeset_xml_node|
 
   # include discussion if requested
 
-  if @include_discussion
+  if @comments
     changeset_xml_node.discussion do |discussion_xml_node|
-      changeset.comments.includes(:author).each do |comment|
+      @comments.each do |comment|
         cattrs = {
           "id" => comment.id,
-          "date" => comment.created_at.xmlschema
+          "date" => comment.created_at.xmlschema,
+          "visible" => comment.visible
         }
         if comment.author.data_public?
           cattrs["uid"] = comment.author.id

test/controllers/api/changesets_controller_test.rb

@@ -152,39 +152,83 @@ def test_show
       assert_response :success, "cannot get first changeset"
 
       assert_select "osm[version='#{Settings.api_version}'][generator='#{Settings.generator}']", 1
-      assert_select "osm>changeset[id='#{changeset.id}']", 1
-      assert_select "osm>changeset>@open", "true"
-      assert_select "osm>changeset>@created_at", changeset.created_at.xmlschema
-      assert_select "osm>changeset>@closed_at", 0
+      assert_single_changeset changeset
       assert_select "osm>changeset>discussion", 0
 
       get changeset_show_path(changeset), :params => { :include_discussion => true }
       assert_response :success, "cannot get first changeset with comments"
 
       assert_select "osm[version='#{Settings.api_version}'][generator='#{Settings.generator}']", 1
-      assert_select "osm>changeset[id='#{changeset.id}']", 1
-      assert_select "osm>changeset>@open", "true"
-      assert_select "osm>changeset>@created_at", changeset.created_at.xmlschema
-      assert_select "osm>changeset>@closed_at", 0
+      assert_single_changeset changeset
       assert_select "osm>changeset>discussion", 1
       assert_select "osm>changeset>discussion>comment", 0
+    end
 
+    def test_show_comments
+      # all comments visible
       changeset = create(:changeset, :closed)
       comment1, comment2, comment3 = create_list(:changeset_comment, 3, :changeset_id => changeset.id)
 
       get changeset_show_path(changeset), :params => { :include_discussion => true }
       assert_response :success, "cannot get closed changeset with comments"
 
       assert_select "osm[version='#{Settings.api_version}'][generator='#{Settings.generator}']", 1
-      assert_select "osm>changeset[id='#{changeset.id}']", 1
-      assert_select "osm>changeset>@open", "false"
-      assert_select "osm>changeset>@created_at", changeset.created_at.xmlschema
-      assert_select "osm>changeset>@closed_at", changeset.closed_at.xmlschema
+      assert_single_changeset changeset
       assert_select "osm>changeset>discussion", 1
       assert_select "osm>changeset>discussion>comment", 3
       assert_select "osm>changeset>discussion>comment:nth-child(1)>@id", comment1.id.to_s
+      assert_select "osm>changeset>discussion>comment:nth-child(1)>@visible", "true"
       assert_select "osm>changeset>discussion>comment:nth-child(2)>@id", comment2.id.to_s
+      assert_select "osm>changeset>discussion>comment:nth-child(2)>@visible", "true"
       assert_select "osm>changeset>discussion>comment:nth-child(3)>@id", comment3.id.to_s
+      assert_select "osm>changeset>discussion>comment:nth-child(3)>@visible", "true"
+
+      # one hidden comment not included because not asked for
+      comment2.update(:visible => false)
+
+      get changeset_show_path(changeset), :params => { :include_discussion => true }
+      assert_response :success, "cannot get closed changeset with comments"
+
+      assert_select "osm[version='#{Settings.api_version}'][generator='#{Settings.generator}']", 1
+      assert_single_changeset changeset
+      assert_select "osm>changeset>discussion", 1
+      assert_select "osm>changeset>discussion>comment", 2
+      assert_select "osm>changeset>discussion>comment:nth-child(1)>@id", comment1.id.to_s
+      assert_select "osm>changeset>discussion>comment:nth-child(1)>@visible", "true"
+      assert_select "osm>changeset>discussion>comment:nth-child(2)>@id", comment3.id.to_s
+      assert_select "osm>changeset>discussion>comment:nth-child(2)>@visible", "true"
+
+      # one hidden comment not included because no permissions
+      get changeset_show_path(changeset), :params => { :include_discussion => true, :show_hidden_comments => true }
+      assert_response :success, "cannot get closed changeset with comments"
+
+      assert_select "osm[version='#{Settings.api_version}'][generator='#{Settings.generator}']", 1
+      assert_single_changeset changeset
+      assert_select "osm>changeset>discussion", 1
+      assert_select "osm>changeset>discussion>comment", 2
+      assert_select "osm>changeset>discussion>comment:nth-child(1)>@id", comment1.id.to_s
+      assert_select "osm>changeset>discussion>comment:nth-child(1)>@visible", "true"
+      # maybe will show an empty comment element with visible=false in the future
+      assert_select "osm>changeset>discussion>comment:nth-child(2)>@id", comment3.id.to_s
+      assert_select "osm>changeset>discussion>comment:nth-child(2)>@visible", "true"
+
+      # one hidden comment shown to moderators
+      moderator_user = create(:moderator_user)
+      auth_header = basic_authorization_header moderator_user.email, "test"
+      get changeset_show_path(changeset), :params => { :include_discussion => true, :show_hidden_comments => true },
+                                          :headers => auth_header
+      assert_response :success, "cannot get closed changeset with comments"
+
+      assert_select "osm[version='#{Settings.api_version}'][generator='#{Settings.generator}']", 1
+      assert_single_changeset changeset
+      assert_select "osm>changeset>discussion", 1
+      assert_select "osm>changeset>discussion>comment", 3
+      assert_select "osm>changeset>discussion>comment:nth-child(1)>@id", comment1.id.to_s
+      assert_select "osm>changeset>discussion>comment:nth-child(1)>@visible", "true"
+      assert_select "osm>changeset>discussion>comment:nth-child(2)>@id", comment2.id.to_s
+      assert_select "osm>changeset>discussion>comment:nth-child(2)>@visible", "false"
+      assert_select "osm>changeset>discussion>comment:nth-child(3)>@id", comment3.id.to_s
+      assert_select "osm>changeset>discussion>comment:nth-child(3)>@visible", "true"
     end
 
     def test_show_json
@@ -198,10 +242,7 @@ def test_show_json
 
       assert_equal Settings.api_version, js["version"]
       assert_equal Settings.generator, js["generator"]
-      assert_equal changeset.id, js["changeset"]["id"]
-      assert js["changeset"]["open"]
-      assert_equal changeset.created_at.xmlschema, js["changeset"]["created_at"]
-      assert_nil js["changeset"]["closed_at"]
+      assert_single_changeset_json changeset, js
       assert_nil js["changeset"]["tags"]
       assert_nil js["changeset"]["comments"]
       assert_equal changeset.user.id, js["changeset"]["uid"]
@@ -214,17 +255,17 @@ def test_show_json
       assert_not_nil js
       assert_equal Settings.api_version, js["version"]
       assert_equal Settings.generator, js["generator"]
-      assert_equal changeset.id, js["changeset"]["id"]
-      assert js["changeset"]["open"]
-      assert_equal changeset.created_at.xmlschema, js["changeset"]["created_at"]
-      assert_nil js["changeset"]["closed_at"]
+      assert_single_changeset_json changeset, js
       assert_nil js["changeset"]["tags"]
       assert_nil js["changeset"]["min_lat"]
       assert_nil js["changeset"]["min_lon"]
       assert_nil js["changeset"]["max_lat"]
       assert_nil js["changeset"]["max_lon"]
       assert_equal 0, js["changeset"]["comments"].count
+    end
 
+    def test_show_comments_json
+      # all comments visible
       changeset = create(:changeset, :closed)
       comment0, comment1, comment2 = create_list(:changeset_comment, 3, :changeset_id => changeset.id)
 
@@ -235,14 +276,67 @@ def test_show_json
       assert_not_nil js
       assert_equal Settings.api_version, js["version"]
       assert_equal Settings.generator, js["generator"]
-      assert_equal changeset.id, js["changeset"]["id"]
-      assert_not js["changeset"]["open"]
-      assert_equal changeset.created_at.xmlschema, js["changeset"]["created_at"]
-      assert_equal changeset.closed_at.xmlschema, js["changeset"]["closed_at"]
+      assert_single_changeset_json changeset, js
+      assert_equal 3, js["changeset"]["comments"].count
+      assert_equal comment0.id, js["changeset"]["comments"][0]["id"]
+      assert js["changeset"]["comments"][0]["visible"]
+      assert_equal comment1.id, js["changeset"]["comments"][1]["id"]
+      assert js["changeset"]["comments"][1]["visible"]
+      assert_equal comment2.id, js["changeset"]["comments"][2]["id"]
+      assert js["changeset"]["comments"][2]["visible"]
+
+      # one hidden comment not included because not asked for
+      comment1.update(:visible => false)
+
+      get changeset_show_path(changeset), :params => { :format => "json", :include_discussion => true }
+      assert_response :success, "cannot get closed changeset with comments"
+
+      js = ActiveSupport::JSON.decode(@response.body)
+      assert_not_nil js
+      assert_equal Settings.api_version, js["version"]
+      assert_equal Settings.generator, js["generator"]
+      assert_single_changeset_json changeset, js
+      assert_equal 2, js["changeset"]["comments"].count
+      assert_equal comment0.id, js["changeset"]["comments"][0]["id"]
+      assert js["changeset"]["comments"][0]["visible"]
+      assert_equal comment2.id, js["changeset"]["comments"][1]["id"]
+      assert js["changeset"]["comments"][1]["visible"]
+
+      # one hidden comment not included because no permissions
+      get changeset_show_path(changeset), :params => { :format => "json", :include_discussion => true, :show_hidden_comments => true }
+      assert_response :success, "cannot get closed changeset with comments"
+
+      js = ActiveSupport::JSON.decode(@response.body)
+      assert_not_nil js
+      assert_equal Settings.api_version, js["version"]
+      assert_equal Settings.generator, js["generator"]
+      assert_single_changeset_json changeset, js
+      assert_equal 2, js["changeset"]["comments"].count
+      assert_equal comment0.id, js["changeset"]["comments"][0]["id"]
+      assert js["changeset"]["comments"][0]["visible"]
+      # maybe will show an empty comment element with visible=false in the future
+      assert_equal comment2.id, js["changeset"]["comments"][1]["id"]
+      assert js["changeset"]["comments"][1]["visible"]
+
+      # one hidden comment shown to moderators
+      moderator_user = create(:moderator_user)
+      auth_header = basic_authorization_header moderator_user.email, "test"
+      get changeset_show_path(changeset), :params => { :format => "json", :include_discussion => true, :show_hidden_comments => true },
+                                          :headers => auth_header
+      assert_response :success, "cannot get closed changeset with comments"
+
+      js = ActiveSupport::JSON.decode(@response.body)
+      assert_not_nil js
+      assert_equal Settings.api_version, js["version"]
+      assert_equal Settings.generator, js["generator"]
+      assert_single_changeset_json changeset, js
       assert_equal 3, js["changeset"]["comments"].count
       assert_equal comment0.id, js["changeset"]["comments"][0]["id"]
+      assert js["changeset"]["comments"][0]["visible"]
       assert_equal comment1.id, js["changeset"]["comments"][1]["id"]
+      refute js["changeset"]["comments"][1]["visible"]
       assert_equal comment2.id, js["changeset"]["comments"][2]["id"]
+      assert js["changeset"]["comments"][2]["visible"]
     end
 
     def test_show_tag_and_discussion_json
@@ -270,10 +364,7 @@ def test_show_tag_and_discussion_json
       assert_not_nil js
       assert_equal Settings.api_version, js["version"]
       assert_equal Settings.generator, js["generator"]
-      assert_equal changeset.id, js["changeset"]["id"]
-      assert_not js["changeset"]["open"]
-      assert_equal changeset.created_at.xmlschema, js["changeset"]["created_at"]
-      assert_equal changeset.closed_at.xmlschema, js["changeset"]["closed_at"]
+      assert_single_changeset_json changeset, js
       assert_equal 2, js["changeset"]["tags"].count
       assert_equal 3, js["changeset"]["comments"].count
       assert_equal 3, js["changeset"]["comments_count"]
@@ -2355,6 +2446,33 @@ def test_unsubscribe_fail
 
     private
 
+    ##
+    # check that the output consists of one specific changeset
+    def assert_single_changeset(changeset)
+      assert_select "osm>changeset", 1
+      assert_select "osm>changeset>@id", changeset.id.to_s
+      assert_select "osm>changeset>@created_at", changeset.created_at.xmlschema
+      if changeset.open?
+        assert_select "osm>changeset>@open", "true"
+        assert_select "osm>changeset>@closed_at", 0
+      else
+        assert_select "osm>changeset>@open", "false"
+        assert_select "osm>changeset>@closed_at", changeset.closed_at.xmlschema
+      end
+    end
+
+    def assert_single_changeset_json(changeset, js)
+      assert_equal changeset.id, js["changeset"]["id"]
+      assert_equal changeset.created_at.xmlschema, js["changeset"]["created_at"]
+      if changeset.open?
+        assert js["changeset"]["open"]
+        assert_nil js["changeset"]["closed_at"]
+      else
+        assert_not js["changeset"]["open"]
+        assert_equal changeset.closed_at.xmlschema, js["changeset"]["closed_at"]
+      end
+    end
+
     ##
     # check that certain changesets exist in the output
     def assert_changesets(changesets)