neiam /gitgud

defmodule Mix.Tasks.Gitgud.BackfillRoots do
  @moduledoc """
  Index every repository's root commits into `repository_roots`.

  New repos get indexed on creation (forks/clones) or first push, so
  this is only needed once, for repos that predate the table.

      mix gitgud.backfill_roots
  """
  @shortdoc "Index root commits for every repository"

  use Mix.Task

  @impl true
  def run(_args) do
    Mix.Task.run("app.start")

    GitGud.Repositories.Repository
    |> GitGud.Repo.all()
    |> Enum.each(fn repo ->
      shas = GitGud.Repositories.refresh_root_commits(repo)
      Mix.shell().info("#{repo.disk_path}: #{length(shas)} root(s)")
    end)
  end
end