-- +goose Up
ALTER TABLE file_files
  ADD COLUMN lifecycle_status VARCHAR(32) NOT NULL DEFAULT 'temp' AFTER status,
  ADD COLUMN attached_at DATETIME(6) NULL AFTER lifecycle_status,
  ADD COLUMN orphaned_at DATETIME(6) NULL AFTER attached_at,
  ADD COLUMN lifecycle_deleted_at DATETIME(6) NULL AFTER orphaned_at,
  ADD KEY idx_file_files_lifecycle_status_orphaned (lifecycle_status, orphaned_at);

UPDATE file_files
SET lifecycle_status = CASE
  WHEN deleted_at IS NOT NULL THEN 'deleted'
  WHEN status = 'ready' AND name_slot = 'live' THEN 'active'
  ELSE 'temp'
END,
attached_at = CASE
  WHEN status = 'ready' AND name_slot = 'live' AND deleted_at IS NULL THEN COALESCE(attached_at, updated_at)
  ELSE attached_at
END,
lifecycle_deleted_at = CASE
  WHEN deleted_at IS NOT NULL THEN COALESCE(lifecycle_deleted_at, deleted_at)
  ELSE lifecycle_deleted_at
END;

-- +goose Down
ALTER TABLE file_files
  DROP KEY idx_file_files_lifecycle_status_orphaned,
  DROP COLUMN lifecycle_deleted_at,
  DROP COLUMN orphaned_at,
  DROP COLUMN attached_at,
  DROP COLUMN lifecycle_status;