Adds /api/v1/json/filters endpoints (#55)

* Adds /api/v1/json/filters endpoint

* Modified as per discussion

* Using Repo.paginate properly now

* Added total count to output

lib/philomena_web/controllers/api/json/filter/system_filter_controller.ex

@@ -0,0 +1,21 @@
+defmodule PhilomenaWeb.Api.Json.Filter.SystemFilterController do
+  use PhilomenaWeb, :controller
+
+  alias PhilomenaWeb.FilterJson
+  alias Philomena.Filters.Filter
+  alias Philomena.Repo
+  import Ecto.Query
+
+  def index(conn, _params) do
+    system_filters =
+      Filter
+      |> where(system: true)
+      |> order_by(asc: :id)
+      |> Repo.paginate(conn.assigns.scrivener)
+
+    json(conn, %{
+      filters: Enum.map(system_filters, &FilterJson.as_json/1),
+      total: system_filters.total_entries
+    })
+  end
+end

lib/philomena_web/controllers/api/json/filter/user_filter_controller.ex

@@ -0,0 +1,31 @@
+defmodule PhilomenaWeb.Api.Json.Filter.UserFilterController do
+  use PhilomenaWeb, :controller
+
+  alias PhilomenaWeb.FilterJson
+  alias Philomena.Filters.Filter
+  alias Philomena.Repo
+  import Ecto.Query
+
+  def index(conn, _params) do
+    user = conn.assigns.current_user
+
+    case user do
+      nil ->
+        conn
+        |> put_status(:forbidden)
+        |> text("")
+
+      _ ->
+        user_filters =
+          Filter
+          |> where(user_id: ^user.id)
+          |> order_by(asc: :id)
+          |> Repo.paginate(conn.assigns.scrivener)
+
+        json(conn, %{
+          filters: Enum.map(user_filters, &FilterJson.as_json/1),
+          total: user_filters.total_entries
+        })
+    end
+  end
+end

lib/philomena_web/router.ex

@@ -119,6 +119,12 @@ defmodule PhilomenaWeb.Router do
     resources "/comments", CommentController, only: [:show]
     resources "/posts", PostController, only: [:show]
     resources "/profiles", ProfileController, only: [:show]
+
+    scope "/filters", Filter, as: :filter do
+      resources "/user", UserFilterController, only: [:index]
+      resources "/system", SystemFilterController, only: [:index]
+    end
+
     resources "/filters", FilterController, only: [:show]
 
     resources "/forums", ForumController, only: [:show, :index] do