// Package buildermgr — NSWatcher for multi-tenant mode.
//
// Listens for Namespaces labeled fission.io/managed=true and calls
// AddNamespace on envWatcher and packageWatcher so they pick up
// Environments and Packages in new tenant namespaces without a restart.
package buildermgr

import (
	"context"

	"go.uber.org/zap"
	"k8s.io/client-go/kubernetes"

	"github.com/fission/fission/pkg/utils"
	"github.com/fission/fission/pkg/utils/manager"
)

// StartNSWatcher watches for Namespaces labeled fission.io/managed=true
// and immediately registers per-NS informers in envWatcher and pkgWatcher.
func StartNSWatcher(
	ctx context.Context,
	logger *zap.Logger,
	kubeClient kubernetes.Interface,
	envw *environmentWatcher,
	pkgw *packageWatcher,
	mgr manager.Interface,
) {
	_, handlers, err := utils.PrepareManagedNamespaceWatcher(ctx, logger, "buildermgr.NSWatcher", utils.DefaultNSResolver().Snapshot(), utils.NamespaceRemovalStrategyTrackOnly, NewNamespaceSubscriber(envw, pkgw, mgr))
	if err != nil {
		logger.Error("buildermgr.NSWatcher: BootstrapAndDispatch failed", zap.Error(err))
	}
	utils.StartManagedNamespaceWatcher(ctx, logger, "buildermgr.NSWatcher", kubeClient, mgr, handlers)
}