Expose more statistics

* differenciate local & all events/comments/groups
* add instance follows/followings

Signed-off-by: Thomas Citharel <tcit@tcit.fr>

test/graphql/resolvers/statistics_test.exs

@@ -0,0 +1,46 @@
+defmodule Mobilizon.GraphQL.Resolvers.StatisticsTest do
+  use Mobilizon.Web.ConnCase
+
+  import Mobilizon.Factory
+
+  alias Mobilizon.GraphQL.AbsintheHelpers
+
+  describe "statistics resolver" do
+    @statistics_query """
+    query {
+      statistics {
+        numberOfUsers
+        numberOfEvents
+        numberOfLocalEvents
+        numberOfComments
+        numberOfLocalComments
+        numberOfGroups
+        numberOfLocalGroups
+        numberOfInstanceFollowings
+        numberOfInstanceFollowers
+      }
+    }
+    """
+
+    test "get statistics", %{conn: conn} do
+      Cachex.clear(:statistics)
+      insert(:event)
+      insert(:comment)
+      insert(:group)
+      actor = insert(:actor, user: nil, domain: "toto.tld")
+      insert(:event, organizer_actor: actor, local: false)
+
+      res = AbsintheHelpers.graphql_query(conn, query: @statistics_query)
+
+      assert res["data"]["statistics"]["numberOfUsers"] == 6
+      assert res["data"]["statistics"]["numberOfLocalEvents"] == 2
+      assert res["data"]["statistics"]["numberOfEvents"] == 3
+      assert res["data"]["statistics"]["numberOfLocalComments"] == 1
+      assert res["data"]["statistics"]["numberOfLocalGroups"] == 1
+
+      insert(:event)
+      # We keep the value in cache
+      assert res["data"]["statistics"]["numberOfLocalEvents"] == 2
+    end
+  end
+end