From 144b48da95867b33315c6a0e6e865c457d89452b Mon Sep 17 00:00:00 2001
From: Sadposter <hannah+pleroma@coffee-and-dreams.uk>
Date: Sat, 12 Jan 2019 14:03:35 +0000
Subject: [PATCH 1/3] Add link headers to MastoAPI /favourites

As documented at https://docs.joinmastodon.org/api/rest/favourites/
---
 lib/pleroma/web/mastodon_api/mastodon_api_controller.ex | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lib/pleroma/web/mastodon_api/mastodon_api_controller.ex b/lib/pleroma/web/mastodon_api/mastodon_api_controller.ex
index e00a3fb87..b83539bad 100644
--- a/lib/pleroma/web/mastodon_api/mastodon_api_controller.ex
+++ b/lib/pleroma/web/mastodon_api/mastodon_api_controller.ex
@@ -836,6 +836,7 @@ defmodule Pleroma.Web.MastodonAPI.MastodonAPIController do
       |> Enum.reverse()
 
     conn
+    |> add_link_headers(:favourites, activities)
     |> put_view(StatusView)
     |> render("index.json", %{activities: activities, for: user, as: :activity})
   end

From 9daf16246121f3d5eeb4d6caeffc237cd5526546 Mon Sep 17 00:00:00 2001
From: Sadposter <hannah+pleroma@coffee-and-dreams.uk>
Date: Sat, 12 Jan 2019 14:42:52 +0000
Subject: [PATCH 2/3] Honour parameters on MastoAPI /favourites

---
 lib/pleroma/web/mastodon_api/mastodon_api_controller.ex | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/lib/pleroma/web/mastodon_api/mastodon_api_controller.ex b/lib/pleroma/web/mastodon_api/mastodon_api_controller.ex
index b83539bad..a8fe9d708 100644
--- a/lib/pleroma/web/mastodon_api/mastodon_api_controller.ex
+++ b/lib/pleroma/web/mastodon_api/mastodon_api_controller.ex
@@ -824,9 +824,9 @@ defmodule Pleroma.Web.MastodonAPI.MastodonAPIController do
     json(conn, res)
   end
 
-  def favourites(%{assigns: %{user: user}} = conn, _) do
+  def favourites(%{assigns: %{user: user}} = conn, params) do
     params =
-      %{}
+      params
       |> Map.put("type", "Create")
       |> Map.put("favorited_by", user.ap_id)
       |> Map.put("blocking_user", user)

From 98d9ae071877cb3e6cd65d84bfc142e9cbb998b0 Mon Sep 17 00:00:00 2001
From: Sadposter <hannah+pleroma@coffee-and-dreams.uk>
Date: Sun, 13 Jan 2019 15:17:47 +0000
Subject: [PATCH 3/3] Add test for mastodon API /favourites endpoint

---
 .../mastodon_api/mastodon_api_controller_test.exs  | 33 ++++++++++++++++++++--
 1 file changed, 31 insertions(+), 2 deletions(-)

diff --git a/test/web/mastodon_api/mastodon_api_controller_test.exs b/test/web/mastodon_api/mastodon_api_controller_test.exs
index b448d13f5..fe8f845c7 100644
--- a/test/web/mastodon_api/mastodon_api_controller_test.exs
+++ b/test/web/mastodon_api/mastodon_api_controller_test.exs
@@ -1349,13 +1349,42 @@ defmodule Pleroma.Web.MastodonAPI.MastodonAPIControllerTest do
 
     {:ok, _, _} = CommonAPI.favorite(activity.id, user)
 
-    conn =
+    first_conn =
       conn
       |> assign(:user, user)
       |> get("/api/v1/favourites")
 
-    assert [status] = json_response(conn, 200)
+    assert [status] = json_response(first_conn, 200)
     assert status["id"] == to_string(activity.id)
+
+    assert [{"link", link_header}] =
+             Enum.filter(first_conn.resp_headers, fn element -> match?({"link", _}, element) end)
+
+    # Honours query params
+    {:ok, second_activity} =
+      CommonAPI.post(other_user, %{
+        "status" =>
+          "Trees Are Never Sad Look At Them Every Once In Awhile They're Quite Beautiful."
+      })
+
+    {:ok, _, _} = CommonAPI.favorite(second_activity.id, user)
+
+    last_like = status["id"]
+
+    second_conn =
+      conn
+      |> assign(:user, user)
+      |> get("/api/v1/favourites?since_id=#{last_like}")
+
+    assert [second_status] = json_response(second_conn, 200)
+    assert second_status["id"] == to_string(second_activity.id)
+
+    third_conn =
+      conn
+      |> assign(:user, user)
+      |> get("/api/v1/favourites?limit=0")
+
+    assert [] = json_response(third_conn, 200)
   end
 
   describe "updating credentials" do