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60 lines
1.7 KiB
Elixir
60 lines
1.7 KiB
Elixir
defmodule PhilomenaWeb.Image.NavigateController do
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use PhilomenaWeb, :controller
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alias PhilomenaWeb.ImageLoader
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alias Philomena.Images.Image
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alias Philomena.Images.Query
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alias Philomena.ImageNavigator
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plug PhilomenaWeb.CanaryMapPlug, index: :show
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plug :load_and_authorize_resource, model: Image, id_name: "image_id", persisted: true
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def index(conn, %{"rel" => rel} = params) when rel in ~W(prev next) do
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image = conn.assigns.image
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filter = conn.assigns.compiled_filter
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rel = String.to_existing_atom(rel)
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next_image = ImageNavigator.find_consecutive(image, rel, params, compile_query(conn), filter)
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scope = Philomena.ImageScope.scope(conn)
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conn
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|> redirect(to: Routes.image_path(conn, :show, next_image, scope))
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end
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def index(conn, %{"rel" => "find"}) do
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pagination = %{conn.assigns.image_pagination | page_number: 1}
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# Find does not use the current search scope
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# (although it probably should).
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body = %{range: %{id: %{gt: conn.assigns.image.id}}}
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{images, _tags} = ImageLoader.query(conn, body, queryable: Image, pagination: pagination)
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page_num = page_for_offset(pagination.page_size, images.total_entries)
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redirect(conn, to: Routes.image_path(conn, :index, page: page_num))
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end
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defp page_for_offset(per_page, offset) do
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offset
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|> div(per_page)
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|> Kernel.+(1)
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|> to_string()
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end
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defp compile_query(conn) do
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user = conn.assigns.current_user
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{:ok, query} = Query.compile(user, match_all_if_blank(conn.params["q"]))
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query
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end
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defp match_all_if_blank(nil), do: "*"
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defp match_all_if_blank(input) do
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case String.trim(input) == "" do
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true -> "*"
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false -> input
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end
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end
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end
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