defmodule ArcadiaCloud.Sync.SnapshotsWorker do
  @moduledoc """
  Full sync of DO snapshots — both droplet snapshots and volume snapshots.
  DO returns them together with a `resource_type` field that we use to
  differentiate; both land as kind="snapshot" with `attrs.resource_type`.
  """
  use Oban.Worker, queue: :cloud_sync_full, max_attempts: 3

  alias ArcadiaCloud.Cloud
  alias ArcadiaCloud.DigitalOcean.Client

  @kind "snapshot"
  @provider "digitalocean"

  @impl Oban.Worker
  def perform(_job) do
    now = DateTime.utc_now() |> DateTime.truncate(:second)

    with {:ok, snapshots} <- Client.list_snapshots() do
      Enum.each(snapshots, fn s ->
        Cloud.upsert_resource(normalize(s, now))
      end)

      Cloud.mark_stale(@kind, now)
      :ok
    end
  end

  defp normalize(s, now) do
    region =
      case s["regions"] do
        [first | _] when is_binary(first) -> first
        _ -> nil
      end

    %{
      provider: @provider,
      provider_id: to_string(s["id"]),
      kind: @kind,
      name: s["name"],
      region: region,
      status: "active",
      tags: s["tags"] || [],
      attrs: %{
        resource_type: s["resource_type"],
        resource_id: s["resource_id"],
        size_gigabytes: s["size_gigabytes"],
        min_disk_size: s["min_disk_size"],
        regions: s["regions"],
        do_created_at: s["created_at"]
      },
      first_seen_at: now,
      last_seen_at: now
    }
  end
end