Summarizer

Mix.install([
  {:req, "~> 0.4.0"},
  {:jason, "~> 1.2"}
])

Github module for interacting with github

defmodule GitHubItem do
  defstruct [:path, :download_url]

  def new_github_item(%{"path" => path, "download_url" => download_url}) do
    %GitHubItem{path: path, download_url: download_url}
  end
end

defmodule GitHubExplorer do
  def fetch_repo_file_tree(owner, repo) do
    fetch_directory_contents(owner, repo, "")
  end

  defp fetch_directory_contents(owner, repo, path) do
    url = "https://api.github.com/repos/#{owner}/#{repo}/contents/#{path}"

    case Req.get(url) do
      {:ok, %Req.Response{status: 200, body: body}} ->
        body
        |> Enum.flat_map(fn item ->
          case item["type"] do
            "file" ->
              [GitHubItem.new_github_item(item)]

            "dir" ->
              fetch_directory_contents(owner, repo, item["path"])

            _ ->
              []
          end
        end)

      {:error, _reason} ->
        []
    end
  end
end

Req.get!("https://api.github.com/repos/isavita/advent2021/contents").body

Expand repo files

GitHubExplorer.fetch_repo_file_tree("isavita", "advent2021")