defmodule Mix.Tasks.SoftPos.Revoke.Client do
  @moduledoc """
  Revokes (deletes) an OAuth2.0 client for SoftPOS API.

  ## Usage

      mix soft_pos.revoke.client <client_id>

  ## Arguments

    * client_id - The client ID (uid) to revoke

  ## Example

      mix soft_pos.revoke.client "softpos_abc123"

  This will delete the client application. Existing tokens will be invalidated.
  """

  use Mix.Task
  alias DaProductApp.SoftPos.OauthApplications

  @shortdoc "Revoke (delete) an OAuth client"

  @impl Mix.Task
  def run([client_uid]) do
    Mix.Task.run("app.start")

    case OauthApplications.get_by_uid(client_uid) do
      nil ->
        Mix.shell().error("Client not found: #{client_uid}")

      client ->
        case OauthApplications.delete_application(client) do
          {:ok, _deleted_client} ->
            Mix.shell().info("""

            ✅ Client Revoked Successfully!

            Client ID: #{client_uid}
            Name: #{client.name}

            The client has been deleted and all associated tokens have been revoked.
            """)

          {:error, changeset} ->
            Mix.shell().error("Failed to revoke client:")
            Mix.shell().error(inspect(changeset.errors))
        end
    end
  end

  def run(_) do
    Mix.shell().error("""
    Usage: mix soft_pos.revoke.client <client_id>

    Example:
      mix soft_pos.revoke.client "softpos_abc123"
    """)
  end
end