/*
 * Please refer to the LICENSE file in the root directory of the project.
 * https://github.com/kubesphere/kubesphere/blob/master/LICENSE
 */

package telemetry

import (
	"context"
	"os/exec"
	"strings"
	"time"

	"k8s.io/klog/v2"
	"k8s.io/utils/ptr"
	clusterv1alpha1 "kubesphere.io/api/cluster/v1alpha1"
	"sigs.k8s.io/controller-runtime/pkg/manager"

	kscontroller "kubesphere.io/kubesphere/pkg/controller"
	"kubesphere.io/kubesphere/pkg/controller/options"
)

var _ manager.LeaderElectionRunnable = &Runnable{}
var _ manager.Runnable = &Runnable{}
var _ kscontroller.Controller = &Runnable{}

const (
	runnableName = "telemetry"
	// defaultPeriod for collect data
	defaultPeriod = time.Hour * 24
)

type Runnable struct {
	*options.TelemetryOptions
}

func (r *Runnable) Name() string {
	return runnableName
}

func (r *Runnable) SetupWithManager(mgr *kscontroller.Manager) error {
	if mgr.TelemetryOptions == nil || mgr.TelemetryOptions.KSCloudURL == "" {
		klog.V(4).Infof("telemetry runnable is disabled")
		return nil
	}
	r.TelemetryOptions = mgr.TelemetryOptions
	if r.TelemetryOptions.Period == nil {
		r.TelemetryOptions.Period = ptr.To[time.Duration](defaultPeriod)
	}
	return mgr.Add(r)
}

func (r *Runnable) Enabled(clusterRole string) bool {
	return strings.EqualFold(clusterRole, string(clusterv1alpha1.ClusterRoleHost))
}

func (r *Runnable) Start(ctx context.Context) error {
	t := time.NewTicker(*r.Period)
	for {
		select {
		case <-t.C:
			var args = []string{
				"--url", r.KSCloudURL,
			}

			cmd := exec.CommandContext(ctx, "telemetry", args...)
			if _, err := cmd.CombinedOutput(); err != nil {
				klog.Errorf("failed to exec command for telemetry %v", err)
			}
		case <-ctx.Done():
			t.Stop()
			return nil
		}
	}
}

func (r *Runnable) NeedLeaderElection() bool {
	return true
}