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52 lines
1.1 KiB
Elixir
52 lines
1.1 KiB
Elixir
defmodule PhilomenaWeb.Api.Json.OembedController do
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use PhilomenaWeb, :controller
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alias Philomena.Images.Image
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alias Philomena.Repo
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import Ecto.Query
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@cdn_regex ~r/\/img\/.*\/(\d+)(\.|[\/_][_\w])/
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@img_regex ~r/\/(\d+)/
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def index(conn, %{"url" => url}) do
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parsed = URI.parse(url)
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try_oembed(conn, parsed)
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end
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def index(conn, _params), do: oembed_error(conn)
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defp try_oembed(conn, %{path: path}) do
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cdn = Regex.run(@cdn_regex, path, capture: :all_but_first)
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img = Regex.run(@img_regex, path, capture: :all_but_first)
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image_id =
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cond do
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cdn -> hd(cdn)
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img -> hd(img)
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true -> nil
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end
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image_id
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|> load_image()
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|> oembed_image(conn)
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end
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defp load_image(nil), do: nil
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defp load_image(id) do
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Image
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|> where(id: ^id, hidden_from_users: false)
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|> preload([:user, tags: :aliases])
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|> Repo.one()
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end
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defp oembed_image(nil, conn), do: oembed_error(conn)
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defp oembed_image(image, conn), do: render(conn, "show.json", image: image)
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defp oembed_error(conn) do
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conn
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|> Plug.Conn.put_status(:not_found)
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|> render("error.json")
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end
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end
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