Handles bulk action execution for Events module.

Runs Ash bulk operations on the selection, classifies the outcome, and routes through the lifecycle hooks before falling back to a sensible default flash.

Lifecycle (Ash bulk paths)

Per bulk action:

1. :after_bulk_action runs with (summary, state) regardless of outcome.
2. Branch on summary.status:
   • :success — :on_bulk_action_success runs; no default flash (the table reload is the user-visible feedback).
   • :partial_success — :on_bulk_action_success runs first; if the hook returns the socket, a default info flash fires ("X succeeded, Y failed."). Hooks return {:halt, socket} to suppress the default.
   • :error — :on_bulk_action_error runs first; same override semantics, defaulting to the formatted error flash. The selection is preserved so the user can retry.
3. For the unarchive partial-skip path (rows whose identity is already taken by an active row), :on_bulk_action_success runs with a summary whose :skipped_count / :skipped_record_ids describe the skipped rows; default flash is "X unarchived, Y skipped — a record with the same name already exists.". Skipped rows stay selected.

See MishkaGervaz.Table.Web.Events.BulkActionResult for the summary shape; MishkaGervaz.Table.Web.Events.BulkActionHooks for silence/1 and use_default/1.

Customization

Two layers of customization:

1. Replace the handler module for full control:

defmodule MyApp.CustomBulkActionHandler do
  use MishkaGervaz.Table.Web.Events.BulkActionHandler

  def execute_ash_bulk_action(action, ash_action, selected_ids, state, socket) do
    MyApp.Logger.info("bulk", action: ash_action, count: length(selected_ids))
    super(action, ash_action, selected_ids, state, socket)
  end
end

Wired in the DSL:

mishka_gervaz do
  table do
    events do
      bulk_action MyApp.CustomBulkActionHandler
    end
  end
end

2. Just adjust messaging via per-action hooks (most common):

hooks do
  on_bulk_action_success :master_destroy, fn summary, _state, socket ->
    socket
    |> Phoenix.LiveView.put_flash(:info, "#{summary.succeeded_count} deleted.")
    |> MishkaGervaz.Table.Web.Events.BulkActionHooks.silence()
  end

  on_bulk_action_error :master_destroy, fn summary, _state, socket ->
    Logger.error("delete failed: #{inspect(summary.failed_errors)}")
    MishkaGervaz.Table.Web.Events.BulkActionHooks.silence(socket)
  end
end

See MishkaGervaz.Table.Web.Events, MishkaGervaz.Table.Entities.BulkAction, MishkaGervaz.Table.Web.DataLoader, MishkaGervaz.Table.Web.Events.BulkActionResult, MishkaGervaz.Table.Web.Events.BulkActionHooks, and the sibling handlers SanitizationHandler, RecordHandler, SelectionHandler, HookRunner, RelationFilterHandler.