X-Git-Url: http://git.squeep.com/?a=blobdiff_plain;f=lib%2Fpleroma%2Fweb%2Frich_media%2Fparser.ex;h=9702e90f19b8ed02ce5569b2576731e204d0ab00;hb=e0b2de63853e9a14b72faddf6e1180a098728205;hp=0d25233388a67ff977bbee8622bab2393ab944e9;hpb=f4447d82b814e4710a0d7499bc0707773ac1e440;p=akkoma

diff --git a/lib/pleroma/web/rich_media/parser.ex b/lib/pleroma/web/rich_media/parser.ex
index 0d2523338..9702e90f1 100644
--- a/lib/pleroma/web/rich_media/parser.ex
+++ b/lib/pleroma/web/rich_media/parser.ex
@@ -24,6 +24,7 @@ defmodule Pleroma.Web.RichMedia.Parser do
         Cachex.fetch!(:rich_media_cache, url, fn _ ->
           {:commit, parse_url(url)}
         end)
+        |> set_ttl_based_on_image(url)
       rescue
         e ->
           {:error, "Cachex error: #{inspect(e)}"}
@@ -31,20 +32,68 @@ defmodule Pleroma.Web.RichMedia.Parser do
     end
   end
 
+  @doc """
+  Set the rich media cache based on the expiration time of image.
+
+  Adopt behaviour `Pleroma.Web.RichMedia.Parser.TTL`
+
+  ## Example
+
+      defmodule MyModule do
+        @behaviour Pleroma.Web.RichMedia.Parser.TTL
+        def ttl(data, url) do
+          image_url = Map.get(data, :image)
+          # do some parsing in the url and get the ttl of the image
+          # and return ttl is unix time
+          parse_ttl_from_url(image_url)
+        end
+      end
+
+  Define the module in the config
+
+      config :pleroma, :rich_media,
+        ttl_setters: [MyModule]
+  """
+  def set_ttl_based_on_image({:ok, data}, url) do
+    with {:ok, nil} <- Cachex.ttl(:rich_media_cache, url),
+         ttl when is_number(ttl) <- get_ttl_from_image(data, url) do
+      Cachex.expire_at(:rich_media_cache, url, ttl * 1000)
+      {:ok, data}
+    else
+      _ ->
+        {:ok, data}
+    end
+  end
+
+  defp get_ttl_from_image(data, url) do
+    Pleroma.Config.get([:rich_media, :ttl_setters])
+    |> Enum.reduce({:ok, nil}, fn
+      module, {:ok, _ttl} ->
+        module.ttl(data, url)
+
+      _, error ->
+        error
+    end)
+  end
+
   defp parse_url(url) do
     try do
       {:ok, %Tesla.Env{body: html}} = Pleroma.HTTP.get(url, [], adapter: @hackney_options)
 
       html
+      |> parse_html()
       |> maybe_parse()
+      |> Map.put(:url, url)
       |> clean_parsed_data()
       |> check_parsed_data()
     rescue
       e ->
-        {:error, "Parsing error: #{inspect(e)}"}
+        {:error, "Parsing error: #{inspect(e)} #{inspect(__STACKTRACE__)}"}
     end
   end
 
+  defp parse_html(html), do: Floki.parse_document!(html)
+
   defp maybe_parse(html) do
     Enum.reduce_while(parsers(), %{}, fn parser, acc ->
       case parser.parse(html, acc) do
@@ -54,7 +103,8 @@ defmodule Pleroma.Web.RichMedia.Parser do
     end)
   end
 
-  defp check_parsed_data(%{title: title} = data) when is_binary(title) and byte_size(title) > 0 do
+  defp check_parsed_data(%{title: title} = data)
+       when is_binary(title) and byte_size(title) > 0 do
     {:ok, data}
   end