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135 lines
3.9 KiB
Elixir
135 lines
3.9 KiB
Elixir
defmodule PhilomenaWeb.ImageLoader do
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alias Philomena.Images.{Image, Query}
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alias Philomena.Textile.Renderer
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alias Philomena.Tags.Tag
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alias Philomena.Repo
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import Ecto.Query
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def search_string(conn, search_string, options \\ []) do
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user = conn.assigns.current_user
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with {:ok, tree} <- Query.compile(user, search_string) do
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{:ok, query(conn, tree, options)}
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else
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error ->
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error
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end
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end
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def query(conn, body, options \\ []) do
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sort_queries = Keyword.get(options, :queries, [])
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sort_sorts = Keyword.get(options, :sorts, [%{created_at: :desc}])
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pagination = Keyword.get(options, :pagination, conn.assigns.image_pagination)
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queryable = Keyword.get(options, :queryable, default_queryable())
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user = conn.assigns.current_user
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filter = conn.assigns.compiled_filter
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filters = create_filters(conn, user, filter)
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records =
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Image.search_records(
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%{
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query: %{
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bool: %{
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must: List.flatten([body, sort_queries]),
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must_not: filters
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}
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},
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sort: sort_sorts
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},
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pagination,
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queryable
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)
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tags =
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body
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|> search_tag_names()
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|> load_tags()
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|> render_bodies(conn)
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{records, tags}
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end
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defp create_filters(conn, user, filter) do
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show_hidden? = Canada.Can.can?(user, :hide, %Image{})
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del = conn.params["del"]
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hidden = conn.params["hidden"]
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[
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filter
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]
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|> maybe_show_deleted(show_hidden?, del)
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|> maybe_custom_hide(user, hidden)
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end
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# Allow moderators to index hidden images
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defp maybe_show_deleted(filters, false, _param),
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do: [%{term: %{hidden_from_users: true}} | filters]
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defp maybe_show_deleted(filters, true, "1"),
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do: filters
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defp maybe_show_deleted(filters, true, "only"),
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do: [%{term: %{hidden_from_users: false}} | filters]
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defp maybe_show_deleted(filters, true, "deleted"),
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do: [%{term: %{hidden_from_users: false}}, %{exists: %{field: :duplicate_id}} | filters]
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defp maybe_show_deleted(filters, true, _param),
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do: [%{term: %{hidden_from_users: true}} | filters]
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# Allow users to reverse the effect of hiding images,
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# if desired
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defp maybe_custom_hide(filters, %{id: _id}, "1"),
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do: filters
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defp maybe_custom_hide(filters, %{id: id}, _param),
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do: [%{term: %{hidden_by_user_ids: id}} | filters]
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defp maybe_custom_hide(filters, _user, _param),
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do: filters
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# TODO: the search parser should try to optimize queries
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defp search_tag_name(%{term: %{"namespaced_tags.name" => tag_name}}), do: [tag_name]
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defp search_tag_name(_other_query), do: []
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defp search_tag_names(%{bool: %{must: musts}}), do: Enum.flat_map(musts, &search_tag_name(&1))
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defp search_tag_names(%{bool: %{should: shoulds}}), do: Enum.flat_map(shoulds, &search_tag_name(&1))
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defp search_tag_names(%{term: %{"namespaced_tags.name" => tag_name}}), do: [tag_name]
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defp search_tag_names(_other_query), do: []
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defp load_tags([]), do: []
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defp load_tags(tags) do
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Tag
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|> join(:left, [t], at in Tag, on: t.id == at.aliased_tag_id)
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|> where([t, at], t.name in ^tags or at.name in ^tags)
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|> preload([:aliases, :aliased_tag, :implied_tags, :implied_by_tags, :dnp_entries, public_links: :user])
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|> Repo.all()
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|> Enum.uniq_by(& &1.id)
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|> Enum.filter(&is_nil(&1.aliased_tag))
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|> Tag.display_order()
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end
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defp render_bodies([], _conn), do: []
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defp render_bodies([tag], conn) do
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dnp_bodies =
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Renderer.render_collection(Enum.map(tag.dnp_entries, &%{body: &1.conditions || ""}), conn)
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dnp_entries =
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Enum.zip(dnp_bodies, tag.dnp_entries)
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description =
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Renderer.render_one(%{body: tag.description || ""}, conn)
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[{tag, description, dnp_entries}]
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end
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defp render_bodies(tags, _conn), do: tags
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defp default_queryable do
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Image
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|> join(:left, [i], _ in assoc(i, :tags))
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|> preload([_i, t], tags: t)
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end
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end
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