# This file is auto-generated by alef — DO NOT EDIT.
# alef:hash:77a993efaaebae8c3b23a2710d132d1b20b8c70281508df55aa4b842c9bca596
# To regenerate: alef generate
# To verify freshness: alef verify --exit-code
defmodule HtmlToMarkdown do
  @moduledoc "High-level API for html_to_markdown"

  @doc "Convert HTML to Markdown, Djot, or plain text."
  @spec convert(String.t()) :: {:ok, map()} | {:error, atom, String.t()}
  def convert(html) do
    HtmlToMarkdown.Native.convert(html, nil)
  end

  @doc "Convert HTML to Markdown, Djot, or plain text."
  @spec convert(String.t(), String.t() | nil) :: {:ok, map()} | {:error, atom, String.t()}
  def convert(html, options) when is_map(options) do
    {visitor, clean_opts} = Map.pop(options, :visitor)

    if is_map(visitor) do
      {:ok, _} =
        HtmlToMarkdown.Native.convert_with_visitor(
          html,
          if(map_size(clean_opts) == 0, do: nil, else: Jason.encode!(clean_opts)),
          visitor
        )

      do_visitor_receive_loop(visitor)
    else
      HtmlToMarkdown.Native.convert(html, if(map_size(clean_opts) == 0, do: nil, else: Jason.encode!(clean_opts)))
    end
  end

  def convert(html, nil) do
    HtmlToMarkdown.Native.convert(html, nil)
  end

  @doc false
  defp do_visitor_receive_loop(visitor) do
    receive do
      {:visitor_callback, ref_id, callback_name, args_json} ->
        result =
          case Map.get(visitor, callback_name) do
            nil -> "Continue"
            fun -> apply_visitor_callback(fun, args_json)
          end

        HtmlToMarkdown.Native.visitor_reply(ref_id, result)
        do_visitor_receive_loop(visitor)

      {:ok, result} ->
        {:ok, result}

      {:error, reason} ->
        {:error, reason}
    after
      30_000 ->
        {:error, "visitor callback timeout after 30s"}
    end
  end

  @doc false
  defp apply_visitor_callback(fun, args_json) do
    args = Jason.decode!(args_json)
    result = fun.(args)

    case result do
      "Continue" -> "Continue"
      :continue -> "Continue"
      "Skip" -> "Skip"
      :skip -> "Skip"
      "PreserveHtml" -> "PreserveHtml"
      :preserve_html -> "PreserveHtml"
      {:custom, value} -> to_string(value)
      binary when is_binary(binary) -> binary
      _ -> "Continue"
    end
  end
end