Implement public actor ICS endpoint and event ICS export

Closes #83 and #84

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

test/mobilizon_web/controllers/feed_controller_test.exs

@@ -4,7 +4,7 @@ defmodule MobilizonWeb.FeedControllerTest do
   alias MobilizonWeb.Router.Helpers, as: Routes
   alias MobilizonWeb.Endpoint
 
-  describe "/@:preferred_username.atom" do
+  describe "/@:preferred_username/feed/atom" do
     test "it returns an RSS representation of the actor's public events", %{conn: conn} do
       actor = insert(:actor)
       tag1 = insert(:tag, title: "RSS", slug: "rss")
@@ -61,4 +61,82 @@ defmodule MobilizonWeb.FeedControllerTest do
       assert response(conn, 404)
     end
   end
+
+  describe "/@:preferred_username/feed/ics" do
+    test "it returns an iCalendar representation of the actor's public events", %{conn: conn} do
+      actor = insert(:actor)
+      tag1 = insert(:tag, title: "iCalendar", slug: "icalendar")
+      tag2 = insert(:tag, title: "Apple", slug: "apple")
+      event1 = insert(:event, organizer_actor: actor, tags: [tag1])
+      event2 = insert(:event, organizer_actor: actor, tags: [tag1, tag2])
+
+      conn =
+        conn
+        |> get(
+          Routes.feed_url(Endpoint, :actor, actor.preferred_username, "ics")
+          |> URI.decode()
+        )
+
+      assert response(conn, 200) =~ "BEGIN:VCALENDAR"
+      assert response_content_type(conn, :calendar) =~ "charset=utf-8"
+
+      [entry1, entry2] = entries = ExIcal.parse(conn.resp_body)
+
+      Enum.each(entries, fn entry ->
+        assert entry.summary in [event1.title, event2.title]
+      end)
+
+      assert entry1.categories == [event1.category, tag1.slug]
+      assert entry2.categories == [event2.category, tag1.slug, tag2.slug]
+    end
+
+    test "it returns an iCalendar representation of the actor's public events with the proper accept header",
+         %{conn: conn} do
+      actor = insert(:actor)
+
+      conn =
+        conn
+        |> put_req_header("accept", "text/calendar")
+        |> get(
+          Routes.feed_url(Endpoint, :actor, actor.preferred_username, "ics")
+          |> URI.decode()
+        )
+
+      assert response(conn, 200) =~ "BEGIN:VCALENDAR"
+      assert response_content_type(conn, :calendar) =~ "charset=utf-8"
+    end
+
+    test "it doesn't return anything for an not existing actor", %{conn: conn} do
+      conn =
+        conn
+        |> put_req_header("accept", "text/calendar")
+        |> get("/@notexistent/feed/ics")
+
+      assert response(conn, 404)
+    end
+  end
+
+  describe "/events/:uuid/export/ics" do
+    test "it returns an iCalendar representation of the event", %{conn: conn} do
+      tag1 = insert(:tag, title: "iCalendar", slug: "icalendar")
+      tag2 = insert(:tag, title: "Apple", slug: "apple")
+      event1 = insert(:event, tags: [tag1, tag2])
+
+      conn =
+        conn
+        |> get(
+          Routes.feed_url(Endpoint, :event, event1.uuid, "ics")
+          |> URI.decode()
+        )
+
+      assert response(conn, 200) =~ "BEGIN:VCALENDAR"
+      assert response_content_type(conn, :calendar) =~ "charset=utf-8"
+
+      [entry1] = ExIcal.parse(conn.resp_body)
+
+      assert entry1.summary == event1.title
+
+      assert entry1.categories == [event1.category, tag1.slug, tag2.slug]
+    end
+  end
 end