fae7ba3304
* Added duration field, started importing it during indexing and download * Added duration to RSS feed
117 lines
3.3 KiB
Elixir
117 lines
3.3 KiB
Elixir
defmodule Pinchflat.YtDlp.Media do
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@moduledoc """
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Contains utilities for working with singular pieces of media
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"""
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@enforce_keys [
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:media_id,
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:title,
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:description,
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:original_url,
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:livestream,
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:short_form_content,
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:upload_date,
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:duration_seconds
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]
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defstruct [
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:media_id,
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:title,
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:description,
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:original_url,
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:livestream,
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:short_form_content,
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:upload_date,
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:duration_seconds
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]
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alias __MODULE__
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alias Pinchflat.Utils.FunctionUtils
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alias Pinchflat.Metadata.MetadataFileHelpers
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@doc """
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Downloads a single piece of media (and possibly its metadata) directly to its
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final destination. Returns the parsed JSON output from yt-dlp.
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Returns {:ok, map()} | {:error, any, ...}.
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"""
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def download(url, command_opts \\ []) do
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opts = [:no_simulate] ++ command_opts
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with {:ok, output} <- backend_runner().run(url, opts, "after_move:%()j"),
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{:ok, parsed_json} <- Phoenix.json_library().decode(output) do
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{:ok, parsed_json}
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else
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err -> err
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end
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end
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@doc """
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Returns a map representing the media at the given URL.
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Returns {:ok, [map()]} | {:error, any, ...}.
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"""
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def get_media_attributes(url) do
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runner = Application.get_env(:pinchflat, :yt_dlp_runner)
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command_opts = [:simulate, :skip_download]
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output_template = indexing_output_template()
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case runner.run(url, command_opts, output_template) do
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{:ok, output} ->
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output
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|> Phoenix.json_library().decode!()
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|> response_to_struct()
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|> FunctionUtils.wrap_ok()
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res ->
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res
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end
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end
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@doc """
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Returns the output template for yt-dlp's indexing command.
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"""
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def indexing_output_template do
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"%(.{id,title,was_live,webpage_url,description,aspect_ratio,duration,upload_date})j"
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end
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@doc """
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Transforms a response from yt-dlp into a struct. Interprets the response to
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determine if the media is short-form content.
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Returns %Media{}.
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"""
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def response_to_struct(response) do
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%Media{
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media_id: response["id"],
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title: response["title"],
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description: response["description"],
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original_url: response["webpage_url"],
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livestream: response["was_live"],
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duration_seconds: response["duration"] && round(response["duration"]),
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short_form_content: response["webpage_url"] && short_form_content?(response),
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upload_date: response["upload_date"] && MetadataFileHelpers.parse_upload_date(response["upload_date"])
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}
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end
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defp short_form_content?(response) do
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if String.contains?(response["webpage_url"], "/shorts/") do
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true
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else
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# Sometimes shorts are returned without /shorts/ in the URL,
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# so we need to do our best to determine if it's a short. This
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# WILL returns false positives, but it's a best-effort approach
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# that should work for most cases. The aspect_ratio check is
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# based on a gut feeling and may need to be tweaked.
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#
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# These don't fail if duration or aspect_ratio are missing
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# due to Elixir's comparison semantics
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response["duration"] <= 60 && response["aspect_ratio"] < 0.8
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end
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end
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defp backend_runner do
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# This approach lets us mock the command for testing
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Application.get_env(:pinchflat, :yt_dlp_runner)
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end
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end
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