package service

import (
	"context"
	"encoding/json"
	"fmt"
	"go-micro.dev/v4/auth"
	"go-micro.dev/v4/metadata"
	"reflect"
	req "sghgogs.com/sghblog/authorization-service/domain/model/request"
	"sghgogs.com/sghblog/authorization-service/domain/repository"
	pb "sghgogs.com/sghblog/authorization-service/proto"
	"sghgogs.com/sghblog/authorization-service/utils/authutil"
	"sghgogs.com/sghblog/common/errorcode"
	"strconv"
	"strings"
	"time"
)

type IService interface {
	AdminLogin(string, string) (pb.AdminUser, error)

	GetAdminUser(int64) (*pb.AdminUser, error)
	ListAdminUsers(*pb.ListAdminUsersRequest) ([]*pb.AdminUser, int64, error)
	CreateAdminUser(*pb.CreateAdminUserRequest) error
	DeleteAdminUser(context.Context, int64) error
	UpdateAdminUser(*pb.UpdateAdminUserRequest) error
	ToggleAdminUser(*pb.ToggleAdminUserRequest) error
	RetrieveEnabledUsers() ([]*pb.AdminUser, error)

	// RevokeAdminUserWithRole(context.Context, *pb.RevokeAdminUserWithRoleRequest) error
	// GetUnassignedAdminRoles(int64) ([]*pb.AdminRole, int64, error)
	// GetAdminUserAssociatedRoles(string) ([]*pb.AdminBase, error)

	GetAdminRole(int64) (*pb.AdminRole, error)
	CreateAdminRole(context.Context, *pb.CreateAdminRoleRequest) error
	UpdateAdminRole(*pb.UpdateAdminRoleRequest) error
	ListAdminRoles(*pb.ListAdminRolesRequest) ([]*pb.AdminRole, int64, error)
	RetrieveEnabledRoles() ([]*pb.AdminRole, error)
	ToggleAdminRole(*pb.ToggleAdminRoleRequest) error
	DeleteAdminRole(int64) error

	GetAdminPermissionList(*pb.GetAdminPermissionListRequest) ([]*pb.AdminPermission, int64, error)
	GetAdminPermission(*pb.GetAdminPermissionRequest) (pb.AdminPermission, error)
	GetAdminPermissionAll() ([]req.AdminPermission, error)
	CreateAdminPermission(context.Context, *pb.CreateAdminPermissionRequest) error
	UpdateAdminPermission(context.Context, *pb.UpdateAdminPermissionRequest) error
	DeleteAdminPermission(*pb.DeleteAdminPermissionRequest) error
	ToggleAdminPermission(*pb.ToggleAdminPermissionRequest) error
	// AssociateUserWithRole(context.Context, *pb.AssociateAdminUserWithRoleRequest) error
	// UpdateAdminUserProfileInfoRequest(*pb.UpdateAdminUserProfileInfoRequest) error
}

func ConvertTimeToInt64(t time.Time) int64 {
	return t.Unix()
}
func ConvertInt64ToTime(seconds int64) time.Time {
	return time.Unix(seconds, 0)
}

func FindStructDiff(oldData, newData interface{}) (string, string) {
	// var diffs []Diff
	// Convert structs to JSON for easy comparison
	oldJSON, _ := json.Marshal(oldData)
	newJSON, _ := json.Marshal(newData)

	// Unmarshal JSON back to map for easier comparison
	var oldMap, newMap map[string]interface{}
	_ = json.Unmarshal(oldJSON, &oldMap)
	_ = json.Unmarshal(newJSON, &newMap)

	// Compare the fields
	old_data := make(map[string]interface{})
	new_data := make(map[string]interface{})
	for key, oldValue := range oldMap {
		if _, ok := newMap[key]; ok {
			newValue, exists := newMap[key]
			if !exists || !reflect.DeepEqual(oldValue, newValue) {
				old_data[key] = oldValue
				new_data[key] = newValue
			}
		}
	}
	oldStr, _ := json.Marshal(old_data)
	newStr, _ := json.Marshal(new_data)
	fmt.Println(string(oldStr), string(newStr))
	return string(oldStr), string(newStr)
}

func ParseMetadata(ctx context.Context) (int64, string, string, string) {
	md, b := metadata.FromContext(ctx)
	if !b {
		return 0, "", "", ""
	}
	authHeader, ok := md["Authorization"]
	if !ok || !strings.HasPrefix(authHeader, auth.BearerScheme) {
	}
	token := strings.TrimPrefix(authHeader, auth.BearerScheme)
	inspect, _ := authutil.JWTAuthService.Inspect(token)
	fmt.Println("inspect", inspect)
	var userId int64
	if id, isOk := inspect.Metadata["user_id"]; isOk {
		ID, _ := strconv.ParseInt(id, 0, 64)
		userId = ID
	}
	createdBy := ""
	if username, isOk := inspect.Metadata["username"]; isOk {
		createdBy = username
	}
	IPAddress := ""
	if len(md["Local"]) > 0 {
		IPAddress = md["Local"]
	} else {
		IPAddress = md["Remote"]
	}
	return userId, createdBy, IPAddress, md["Agent"]
}

func NewService(r repository.IRepository) IService {
	return &Service{
		Repository: r,
	}
}

type Service struct {
	Repository repository.IRepository
}

func (s *Service) CreatedAuditLog(ctx context.Context, action, tableName string, recordID int64, oldData, newData string) (string, error) {
	userId, createdBy, IPAddress, agent := ParseMetadata(ctx)
	log := req.AuditLog{
		UserID:    userId,
		Action:    action,
		TableName: tableName,
		RecordID:  recordID,
		OldData:   oldData,
		NewData:   newData,
		IPAddress: IPAddress,
		UserAgent: agent,
		CreatedAt: time.Now(),
	}
	if err := s.Repository.CreateAuditLog(&log); err != nil {
		return createdBy, errorcode.New("authorization service", err.Error(), 500)
	}
	return createdBy, nil
}