forked from potsda.mn/mobilizon
85 lines
2.3 KiB
Elixir
85 lines
2.3 KiB
Elixir
defmodule Mobilizon.Federation.ActivityStream.Converter.Media do
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@moduledoc """
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Media converter.
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This module allows to convert events from ActivityStream format to our own
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internal one, and back.
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"""
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alias Mobilizon.Federation.ActivityStream
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alias Mobilizon.Medias
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alias Mobilizon.Medias.Media, as: MediaModel
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alias Mobilizon.Web.Upload
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@http_options [
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ssl: [{:versions, [:"tlsv1.2"]}]
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]
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@doc """
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Convert a media struct to an ActivityStream representation.
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"""
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@spec model_to_as(MediaModel.t()) :: ActivityStream.t()
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def model_to_as(%MediaModel{file: file}) do
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%{
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"type" => "Document",
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"mediaType" => file.content_type,
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"url" => file.url,
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"name" => file.name
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}
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end
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@doc """
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Save media data from raw data and return AS Link data.
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"""
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@spec find_or_create_media(map(), String.t() | integer()) ::
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{:ok, MediaModel.t()} | {:error, atom() | String.t() | Ecto.Changeset.t()}
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def find_or_create_media(%{"type" => "Link", "href" => url}, actor_id),
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do:
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find_or_create_media(
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%{"type" => "Document", "url" => url, "name" => "External media"},
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actor_id
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)
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def find_or_create_media(
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%{"type" => "Document", "url" => media_url, "name" => name},
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actor_id
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)
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when is_binary(media_url) do
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case upload_media(media_url, name) do
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{:error, err} ->
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{:error, err}
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{:ok, %{url: url} = uploaded} ->
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case Medias.get_media_by_url(url) do
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%MediaModel{file: _file} = media ->
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{:ok, media}
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nil ->
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Medias.create_media(%{
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file: Map.take(uploaded, [:url, :name, :content_type, :size]),
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metadata: Map.take(uploaded, [:width, :height, :blurhash]),
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actor_id: actor_id
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})
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end
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end
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end
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@spec upload_media(String.t(), String.t()) :: {:ok, map()} | {:error, atom() | String.t()}
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defp upload_media(media_url, name) do
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case Tesla.get(media_url, opts: @http_options) do
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{:ok, %{body: body}} ->
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case Upload.store(%{body: body, name: name}) do
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{:ok, %{url: _url} = uploaded} ->
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{:ok, uploaded}
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{:error, err} ->
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{:error, err}
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end
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{:error, err} ->
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{:error, err}
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end
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end
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end
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