Kieran
4827da3106
* Added basic runner for yt-dlp commands * Updated formatting rules * Added JSON runner; Added test script for CLI interactions * Reworked yt-dlp runner; added proper test mocks
59 lines
1.8 KiB
Elixir
59 lines
1.8 KiB
Elixir
defmodule Pinchflat.DownloaderBackends.YtDlp.CommandRunner do
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@moduledoc """
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Runs yt-dlp commands using the `System.cmd/3` function
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"""
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alias Pinchflat.Utils.StringUtils
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alias Pinchflat.DownloaderBackends.BackendCommandRunner
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@behaviour BackendCommandRunner
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@doc """
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Runs a yt-dlp command and returns the string output
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"""
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@impl BackendCommandRunner
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def run(url, command_opts) do
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command = backend_executable()
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formatted_command_opts = parse_options(command_opts) ++ [url]
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case System.cmd(command, formatted_command_opts, stderr_to_stdout: true) do
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{output, 0} -> {:ok, output}
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{output, status} -> {:error, output, status}
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end
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end
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# We want to satisfy the following behaviours:
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#
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# 1. If the key is an atom, convert it to a string and convert it to kebab case (for convenience)
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# 2. If the key is a string, assume we want it as-is and don't convert it
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# 3. If the key is accompanied by a value, append the value to the list
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# 4. If the key is not accompanied by a value, assume it's a flag and PREpend it to the list
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defp parse_options(command_opts) do
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Enum.reduce(command_opts, [], &parse_option/2)
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end
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defp parse_option({k, v}, acc) when is_atom(k) do
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stringified_key = StringUtils.to_kebab_case(Atom.to_string(k))
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parse_option({"--#{stringified_key}", v}, acc)
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end
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defp parse_option({k, v}, acc) when is_binary(k) do
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acc ++ [k, to_string(v)]
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end
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defp parse_option(arg, acc) when is_atom(arg) do
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stringified_arg = StringUtils.to_kebab_case(Atom.to_string(arg))
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parse_option("--#{stringified_arg}", acc)
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end
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defp parse_option(arg, acc) when is_binary(arg) do
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[arg | acc]
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end
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defp backend_executable do
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Application.get_env(:pinchflat, :yt_dlp_executable)
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end
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end
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