package user

import (
	"fmt"
	"os"
	"strconv"
	"time"

	"github.com/beclab/Olares/framework/app-service/api/sys.bytetrade.io/v1alpha1"
	iamv1alpha2 "github.com/beclab/api/iam/v1alpha2"
	"k8s.io/apimachinery/pkg/api/resource"
	"k8s.io/apimachinery/pkg/runtime"
	"k8s.io/client-go/tools/clientcmd"
	"sigs.k8s.io/controller-runtime/pkg/client"
)

func newUserClientFromKubeConfig(kubeconfig string) (client.Client, error) {
	if kubeconfig == "" {
		kubeconfig = os.Getenv("KUBECONFIG")
		if kubeconfig == "" {
			kubeconfig = clientcmd.RecommendedHomeFile
		}
	}

	config, err := clientcmd.BuildConfigFromFlags("", kubeconfig)
	if err != nil {
		return nil, fmt.Errorf("failed to get kubeconfig: %w", err)
	}

	scheme := runtime.NewScheme()

	if err := iamv1alpha2.AddToScheme(scheme); err != nil {
		return nil, fmt.Errorf("failed to add user scheme: %w", err)
	}

	if err := v1alpha1.AddToScheme(scheme); err != nil {
		return nil, fmt.Errorf("failed to add system scheme: %w", err)
	}

	userClient, err := client.New(config, client.Options{Scheme: scheme})
	if err != nil {
		return nil, fmt.Errorf("failed to create user client: %w", err)
	}
	return userClient, nil
}

func validateResourceLimit(limit resourceLimit) error {
	if limit.memoryLimit != "" {
		memLimit, err := resource.ParseQuantity(limit.memoryLimit)
		if err != nil {
			return fmt.Errorf("invalid memory limit: %v", err)
		}
		minMemLimit, _ := resource.ParseQuantity(defaultMemoryLimit)
		if memLimit.Cmp(minMemLimit) < 0 {
			return fmt.Errorf("invalid memory limit: %s is less than minimum required: %s", memLimit.String(), minMemLimit.String())
		}
	}

	if limit.cpuLimit != "" {
		cpuLimit, err := resource.ParseQuantity(limit.cpuLimit)
		if err != nil {
			return fmt.Errorf("invalid cpu limit: %v", err)
		}
		minCPULimit, _ := resource.ParseQuantity(defaultCPULimit)
		if cpuLimit.Cmp(minCPULimit) < 0 {
			return fmt.Errorf("invalid cpu limit: %s is less than minimum required: %s", cpuLimit.String(), minCPULimit.String())
		}
	}

	return nil
}

func convertUserObjectToUserInfo(user iamv1alpha2.User) userInfo {
	info := userInfo{
		UID:               string(user.UID),
		Name:              user.Name,
		DisplayName:       user.Spec.DisplayName,
		Description:       user.Spec.Description,
		Email:             user.Spec.Email,
		State:             string(user.Status.State),
		CreationTimestamp: user.CreationTimestamp.Unix(),
	}

	if user.Annotations != nil {
		if role, ok := user.Annotations[annotationKeyRole]; ok {
			info.Roles = []string{role}
		}
		if terminusName, ok := user.Annotations["bytetrade.io/terminus-name"]; ok {
			info.TerminusName = terminusName
		}
		if avatar, ok := user.Annotations["bytetrade.io/avatar"]; ok {
			info.Avatar = avatar
		}
		if memoryLimit, ok := user.Annotations[annotationKeyMemoryLimit]; ok {
			info.MemoryLimit = memoryLimit
		}
		if cpuLimit, ok := user.Annotations[annotationKeyCPULimit]; ok {
			info.CpuLimit = cpuLimit
		}
	}

	if user.Status.LastLoginTime != nil {
		lastLogin := user.Status.LastLoginTime.Unix()
		info.LastLoginTime = &lastLogin
	}

	return info
}

func printUserTableHeaders() {
	fmt.Printf("%-20s %-10s %-10s %-30s %-10s %-10s %-10s\n", "NAME", "ROLE", "STATE", "CREATE TIME", "ACTIVATED", "MEMORY", "CPU")
}

func printUserTableRow(info userInfo) {
	role := roleNormal
	if len(info.Roles) > 0 {
		role = info.Roles[0]
	}
	fmt.Printf("%-20s %-10s %-10s %-30s %-10s %-10s %-10s\n",
		info.Name, role, info.State, time.Unix(info.CreationTimestamp, 0).Format(time.RFC3339), strconv.FormatBool(info.WizardComplete), info.MemoryLimit, info.CpuLimit)
}