feat(api): add client app service endpoints

This commit is contained in:
david
2026-07-30 18:04:34 +08:00
parent 47d352b22e
commit 550efb3812
29 changed files with 2147 additions and 44 deletions

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// Package common 提供两个客户端共用的鉴权、验证码和账户范围能力。
package common
import (
"fmt"
"regexp"
"strings"
"time"
"git.apinb.com/bsm-sdk/core/crypto/token"
"git.apinb.com/bsm-sdk/core/env"
"git.apinb.com/bsm-sdk/core/errcode"
"git.apinb.com/bsm-sdk/core/infra"
sdkmiddleware "git.apinb.com/bsm-sdk/core/middleware"
"git.apinb.com/heqiapp/platforms/backend/api/internal/config"
"git.apinb.com/heqiapp/platforms/backend/api/internal/impl"
"git.apinb.com/heqiapp/platforms/backend/api/internal/models"
"github.com/gin-gonic/gin"
)
var phonePattern = regexp.MustCompile(`^1[3-9]\d{9}$`)
var verificationPurposes = map[string]struct{}{
"login": {}, "register": {}, "reset_login_password": {}, "set_payment_password": {},
"reset_payment_password": {}, "bind_bank": {}, "unbind_bank": {},
}
type verificationValue struct {
Code string `json:"code"`
Phone string `json:"phone"`
Purpose string `json:"purpose"`
Client string `json:"client"`
}
// ValidPhone 判断手机号是否符合中国大陆手机号格式。
func ValidPhone(phone string) bool { return phonePattern.MatchString(strings.TrimSpace(phone)) }
// SendVerificationCode 创建一次性验证码。Mock 模式的验证码只保存在 Redis不返回给客户端。
func SendVerificationCode(client string) gin.HandlerFunc {
return func(ctx *gin.Context) {
var request struct {
Phone string `json:"phone" binding:"required"`
Purpose string `json:"purpose" binding:"required"`
}
if ctx.ShouldBindJSON(&request) != nil || !ValidPhone(request.Phone) {
infra.Response.Error(ctx, errcode.ErrInvalidArgument)
return
}
if _, ok := verificationPurposes[request.Purpose]; !ok {
infra.Response.Error(ctx, errcode.ErrInvalidArgument)
return
}
phone := strings.TrimSpace(request.Phone)
throttleKey := impl.RedisService.BuildKey("client-verification-throttle", client, phone)
var sent bool
if impl.RedisService.Get(throttleKey, &sent) == nil && sent {
infra.Response.Error(ctx, errcode.ErrInvalidArgument)
return
}
requestIdentity := models.NewIdentity()
value := verificationValue{Code: config.Spec.Global.MockVerificationCode, Phone: phone, Purpose: request.Purpose, Client: client}
ttl := time.Duration(config.Spec.Global.VerificationTTLSeconds) * time.Second
if err := impl.RedisService.Set(verificationKey(requestIdentity), value, ttl); err != nil {
infra.Response.Error(ctx, err)
return
}
_ = impl.RedisService.Set(throttleKey, true, time.Duration(config.Spec.Global.VerificationSendIntervalSeconds)*time.Second)
infra.Response.Success(ctx, gin.H{"request_identity": requestIdentity, "expires_in": config.Spec.Global.VerificationTTLSeconds})
}
}
// VerifyCode 校验并消费验证码。
func VerifyCode(client, phone, purpose, requestIdentity, code string) bool {
if !config.Spec.Global.MockVerificationEnabled || requestIdentity == "" || code == "" {
return false
}
key := verificationKey(requestIdentity)
var value verificationValue
if impl.RedisService.Get(key, &value) != nil {
return false
}
if value.Client != client || value.Phone != strings.TrimSpace(phone) || value.Purpose != purpose || value.Code != code {
return false
}
return impl.RedisService.Delete(key) == nil
}
func verificationKey(identity string) string {
return impl.RedisService.BuildKey("client-verification", identity)
}
// IssueToken 签发严格区分 user_app 和 service_app 的 JWT。
func IssueToken(identity, client, role string, extend map[string]string) (string, error) {
return token.New(env.Runtime.JwtSecretKey).GenerateJwt(0, identity, client, role, nil, extend)
}
// RequireClient 验证客户端种类,阻止后台令牌跨端调用。
func RequireClient(client string) gin.HandlerFunc {
return func(ctx *gin.Context) {
claims, err := sdkmiddleware.ParseAuth(ctx)
if err != nil || claims.Client != client {
infra.Response.Error(ctx, errcode.ErrPermissionDenied)
ctx.Abort()
return
}
ctx.Next()
}
}
// UserAccount 返回当前启用的用户账户。
func UserAccount(ctx *gin.Context) (models.UserAccount, bool) {
claims, err := sdkmiddleware.ParseAuth(ctx)
if err != nil {
infra.Response.Error(ctx, err)
return models.UserAccount{}, false
}
var account models.UserAccount
if impl.DBService.Where("identity = ? AND status = ?", claims.Identity, 1).First(&account).Error != nil {
infra.Response.Error(ctx, errcode.ErrPermissionDenied)
return models.UserAccount{}, false
}
return account, true
}
// StaffAccount 返回当前启用的工作人员账户。
func StaffAccount(ctx *gin.Context) (models.StaffAccount, bool) {
claims, err := sdkmiddleware.ParseAuth(ctx)
if err != nil {
infra.Response.Error(ctx, err)
return models.StaffAccount{}, false
}
var account models.StaffAccount
if impl.DBService.Where("identity = ? AND status = ?", claims.Identity, 1).First(&account).Error != nil {
infra.Response.Error(ctx, errcode.ErrPermissionDenied)
return models.StaffAccount{}, false
}
return account, true
}
// RecordNo 生成便于检索的业务流水号。
func RecordNo(prefix string) string {
return fmt.Sprintf("%s%d", prefix, time.Now().UnixNano())
}

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package common
import (
"testing"
"git.apinb.com/heqiapp/platforms/backend/api/internal/config"
)
func TestValidPhone(t *testing.T) {
tests := map[string]bool{
"13800138000": true,
"12800138000": false,
"1380013800": false,
"138001380000": false,
"": false,
}
for phone, want := range tests {
if got := ValidPhone(phone); got != want {
t.Errorf("ValidPhone(%q) = %v, want %v", phone, got, want)
}
}
}
func TestProtectFieldUsesRandomCiphertextAndStableFingerprint(t *testing.T) {
original := config.Spec.Global.FieldEncryptionKey
config.Spec.Global.FieldEncryptionKey = "0123456789abcdef0123456789abcdef"
t.Cleanup(func() { config.Spec.Global.FieldEncryptionKey = original })
firstCipher, firstFingerprint, err := protectField("6222021234567890")
if err != nil {
t.Fatal(err)
}
secondCipher, secondFingerprint, err := protectField("6222021234567890")
if err != nil {
t.Fatal(err)
}
if firstCipher == secondCipher {
t.Fatal("AES-GCM ciphertext must use a fresh nonce")
}
if firstFingerprint != secondFingerprint {
t.Fatal("the same card number must have a stable HMAC fingerprint")
}
}

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package common
import (
"crypto/aes"
"crypto/cipher"
"crypto/hmac"
"crypto/rand"
"crypto/sha256"
"encoding/base64"
"encoding/hex"
"io"
"strings"
"time"
"git.apinb.com/bsm-sdk/core/errcode"
"git.apinb.com/bsm-sdk/core/infra"
"git.apinb.com/heqiapp/platforms/backend/api/internal/config"
"git.apinb.com/heqiapp/platforms/backend/api/internal/impl"
base "git.apinb.com/heqiapp/platforms/backend/api/internal/logic/common"
"git.apinb.com/heqiapp/platforms/backend/api/internal/models"
"github.com/gin-gonic/gin"
"golang.org/x/crypto/bcrypt"
"golang.org/x/crypto/hkdf"
"gorm.io/gorm"
"gorm.io/gorm/clause"
)
type walletOwner struct {
Type, Identity, Phone string
ID uint64
}
func currentOwner(ctx *gin.Context, client string) (walletOwner, bool) {
if client == "user_app" {
account, ok := UserAccount(ctx)
return walletOwner{Type: "user", Identity: account.Identity, Phone: account.Phone, ID: account.ID}, ok
}
account, ok := StaffAccount(ctx)
return walletOwner{Type: "staff", Identity: account.Identity, Phone: account.Phone, ID: account.ID}, ok
}
func ensureWallet(tx *gorm.DB, owner walletOwner) (models.WalletBasic, error) {
var wallet models.WalletBasic
err := tx.Where("owner_type = ? AND owner_identity = ?", owner.Type, owner.Identity).First(&wallet).Error
if err == nil {
return wallet, nil
}
if err != gorm.ErrRecordNotFound {
return wallet, err
}
wallet = models.WalletBasic{
Entity: base.NewEntity(base.StatusEnable), OwnerType: owner.Type, OwnerID: owner.ID, OwnerIdentity: owner.Identity,
}
if err := tx.Create(&wallet).Error; err != nil {
return wallet, err
}
return wallet, nil
}
// GetWallet 延迟创建并返回当前主体钱包。
func GetWallet(client string) gin.HandlerFunc {
return func(ctx *gin.Context) {
owner, ok := currentOwner(ctx, client)
if !ok {
return
}
wallet, err := ensureWallet(impl.DBService, owner)
if err != nil {
infra.Response.Error(ctx, err)
return
}
infra.Response.Success(ctx, gin.H{
"identity": wallet.Identity, "balance": wallet.Balance,
"withdrawal_balance": wallet.WithdrawalBalance, "payment_password_set": wallet.PayPasswordHash != "",
})
}
}
// SetPaymentPassword 设置或重置六位数字支付密码。
func SetPaymentPassword(client string) gin.HandlerFunc {
return func(ctx *gin.Context) {
owner, ok := currentOwner(ctx, client)
if !ok {
return
}
var request struct {
NewPassword string `json:"new_password" binding:"required,len=6,numeric"`
CurrentPassword string `json:"current_password"`
Code string `json:"code"`
RequestIdentity string `json:"request_identity"`
}
if ctx.ShouldBindJSON(&request) != nil {
infra.Response.Error(ctx, errcode.ErrInvalidArgument)
return
}
wallet, err := ensureWallet(impl.DBService, owner)
if err != nil {
infra.Response.Error(ctx, err)
return
}
valid := wallet.PayPasswordHash == "" && VerifyCode(client, owner.Phone, "set_payment_password", request.RequestIdentity, request.Code)
if wallet.PayPasswordHash != "" {
valid = bcrypt.CompareHashAndPassword([]byte(wallet.PayPasswordHash), []byte(request.CurrentPassword)) == nil ||
VerifyCode(client, owner.Phone, "reset_payment_password", request.RequestIdentity, request.Code)
}
if !valid {
infra.Response.Error(ctx, errcode.ErrPassword)
return
}
hash, _ := bcrypt.GenerateFromPassword([]byte(request.NewPassword), bcrypt.DefaultCost)
if err := impl.DBService.Model(&wallet).Update("pay_password_hash", string(hash)).Error; err != nil {
infra.Response.Error(ctx, err)
return
}
infra.Response.Success(ctx, gin.H{"changed": true})
}
}
// CreateRecharge 创建待支付充值订单,不直接增加余额。
func CreateRecharge(client string) gin.HandlerFunc {
return func(ctx *gin.Context) {
owner, ok := currentOwner(ctx, client)
if !ok {
return
}
var request struct {
Amount int64 `json:"amount" binding:"required,gt=0"`
Channel string `json:"channel" binding:"required,oneof=mock wechat alipay"`
RequestNo string `json:"request_no" binding:"required"`
}
if ctx.ShouldBindJSON(&request) != nil || request.Amount > config.Spec.Global.ManualRechargeMaxAmount ||
(request.Channel == "mock" && !config.Spec.Global.MockPaymentEnabled) {
infra.Response.Error(ctx, errcode.ErrInvalidArgument)
return
}
wallet, err := ensureWallet(impl.DBService, owner)
if err != nil {
infra.Response.Error(ctx, err)
return
}
order := models.WalletRechargeOrder{
Entity: base.NewEntity(base.StatusEnable), RechargeStatus: 10, WalletBasicID: wallet.ID,
RechargeNo: RecordNo("RC"), RequestNo: request.RequestNo, Amount: request.Amount,
Channel: request.Channel, OwnerType: owner.Type, OwnerIdentity: owner.Identity,
}
if err := impl.DBService.Create(&order).Error; err != nil {
var existing models.WalletRechargeOrder
if impl.DBService.Where("request_no = ? AND owner_identity = ?", request.RequestNo, owner.Identity).First(&existing).Error != nil {
infra.Response.Error(ctx, err)
return
}
order = existing
}
infra.Response.Success(ctx, base.ResourceResponse(order))
}
}
// ConfirmMockRecharge 模拟支付回调,生产关闭;事务内只入账一次。
func ConfirmMockRecharge(client string) gin.HandlerFunc {
return func(ctx *gin.Context) {
if !config.Spec.Global.MockPaymentEnabled {
infra.Response.Error(ctx, errcode.ErrPermissionDenied)
return
}
owner, ok := currentOwner(ctx, client)
if !ok {
return
}
var response models.WalletRechargeOrder
err := impl.DBService.Transaction(func(tx *gorm.DB) error {
if err := tx.Clauses(clause.Locking{Strength: "UPDATE"}).
Where("identity = ? AND owner_identity = ?", ctx.Param("identity"), owner.Identity).First(&response).Error; err != nil {
return err
}
if response.RechargeStatus == 23 {
return nil
}
if response.RechargeStatus != 10 || response.Channel != "mock" {
return gorm.ErrInvalidData
}
var wallet models.WalletBasic
if err := tx.Clauses(clause.Locking{Strength: "UPDATE"}).First(&wallet, response.WalletBasicID).Error; err != nil {
return err
}
wallet.Balance += response.Amount
if err := tx.Model(&wallet).Update("balance", wallet.Balance).Error; err != nil {
return err
}
now := time.Now()
if err := tx.Model(&response).Updates(map[string]any{"recharge_status": 23, "completed_at": &now}).Error; err != nil {
return err
}
date := now.In(time.Local)
return tx.Create(&models.WalletRecord{
Entity: base.NewEntity(base.StatusEnable), WalletBasicID: wallet.ID, RecordNo: RecordNo("WR"),
RequestNo: "recharge:" + response.Identity, Direction: "income", TradeType: "recharge",
Amount: response.Amount, BalanceAfter: wallet.Balance, WithdrawalBalanceAfter: wallet.WithdrawalBalance,
InTradeNo: response.RechargeNo, PayChannel: "mock", OperatorIdentity: owner.Identity,
Ymd: int32(date.Year()*10000 + int(date.Month())*100 + date.Day()), Ym: int32(date.Year()*100 + int(date.Month())),
}).Error
})
if err != nil {
infra.Response.Error(ctx, err)
return
}
infra.Response.Success(ctx, gin.H{"confirmed": true})
}
}
// ListWalletRecords 返回当前钱包不可变流水。
func ListWalletRecords(client string) gin.HandlerFunc {
return func(ctx *gin.Context) {
owner, ok := currentOwner(ctx, client)
if !ok {
return
}
wallet, err := ensureWallet(impl.DBService, owner)
if err != nil {
infra.Response.Error(ctx, err)
return
}
var list []models.WalletRecord
if err := impl.DBService.Where("wallet_basic_id = ?", wallet.ID).Order("created_at desc").Find(&list).Error; err != nil {
infra.Response.Error(ctx, err)
return
}
infra.Response.Success(ctx, base.ResourceResponse(list))
}
}
// ListBanks 仅返回银行卡掩码和非敏感字段。
func ListBanks(client string) gin.HandlerFunc {
return func(ctx *gin.Context) {
owner, ok := currentOwner(ctx, client)
if !ok {
return
}
wallet, err := ensureWallet(impl.DBService, owner)
if err != nil {
infra.Response.Error(ctx, err)
return
}
var banks []models.WalletBank
if err := impl.DBService.Where("wallet_basic_id = ? AND status <> ?", wallet.ID, base.StatusArchived).Find(&banks).Error; err != nil {
infra.Response.Error(ctx, err)
return
}
list := make([]gin.H, 0, len(banks))
for _, bank := range banks {
list = append(list, gin.H{"identity": bank.Identity, "card_no_masked": "**** **** **** " + bank.CardNoLast4, "bank_name": bank.BankName, "card_owner": bank.CardOwner, "bank_type": bank.BankType})
}
infra.Response.Success(ctx, list)
}
}
// BindBank 加密保存银行卡;支付渠道绑定标识在首期保持为空。
func BindBank(client string) gin.HandlerFunc {
return func(ctx *gin.Context) {
owner, ok := currentOwner(ctx, client)
if !ok {
return
}
var request struct {
CardNo string `json:"card_no" binding:"required,min=12,max=32"`
BankName string `json:"bank_name" binding:"required,max=128"`
CardOwner string `json:"card_owner" binding:"required,max=128"`
IDCard string `json:"id_card" binding:"required"`
Phone string `json:"phone" binding:"required"`
BankType string `json:"bank_type"`
Bank string `json:"bank"`
PaymentPassword string `json:"payment_password"`
Code string `json:"code"`
RequestIdentity string `json:"request_identity"`
}
if ctx.ShouldBindJSON(&request) != nil || !ValidPhone(request.Phone) {
infra.Response.Error(ctx, errcode.ErrInvalidArgument)
return
}
wallet, err := ensureWallet(impl.DBService, owner)
if err != nil {
infra.Response.Error(ctx, err)
return
}
if !walletProof(wallet, client, owner.Phone, "bind_bank", request.PaymentPassword, request.RequestIdentity, request.Code) {
infra.Response.Error(ctx, errcode.ErrPassword)
return
}
cardCipher, fingerprint, err := protectField(request.CardNo)
if err != nil {
infra.Response.Error(ctx, err)
return
}
idCipher, _, _ := protectField(request.IDCard)
phoneCipher, _, _ := protectField(request.Phone)
bank := models.WalletBank{
Entity: base.NewEntity(base.StatusEnable), WalletBasicID: wallet.ID, CardNoCiphertext: cardCipher,
CardFingerprint: fingerprint, CardNoLast4: request.CardNo[len(request.CardNo)-4:],
BankName: request.BankName, CardOwner: request.CardOwner, IDCardCiphertext: idCipher,
PhoneCiphertext: phoneCipher, BankType: request.BankType, Bank: request.Bank,
}
if err := impl.DBService.Create(&bank).Error; err != nil {
infra.Response.Error(ctx, err)
return
}
infra.Response.Success(ctx, gin.H{"identity": bank.Identity, "card_no_masked": "**** **** **** " + bank.CardNoLast4})
}
}
// UnbindBank 归档银行卡;存在待处理提现时拒绝。
func UnbindBank(client string) gin.HandlerFunc {
return func(ctx *gin.Context) {
owner, ok := currentOwner(ctx, client)
if !ok {
return
}
var request struct {
PaymentPassword string `json:"payment_password"`
Code string `json:"code"`
RequestIdentity string `json:"request_identity"`
}
if ctx.ShouldBindJSON(&request) != nil {
infra.Response.Error(ctx, errcode.ErrInvalidArgument)
return
}
wallet, err := ensureWallet(impl.DBService, owner)
if err != nil || !walletProof(wallet, client, owner.Phone, "unbind_bank", request.PaymentPassword, request.RequestIdentity, request.Code) {
infra.Response.Error(ctx, errcode.ErrPassword)
return
}
var bank models.WalletBank
if impl.DBService.Where("identity = ? AND wallet_basic_id = ? AND status <> ?", ctx.Param("identity"), wallet.ID, base.StatusArchived).First(&bank).Error != nil {
infra.Response.Error(ctx, errcode.ErrRecordNotFound)
return
}
var count int64
impl.DBService.Model(&models.WalletApplyCash{}).Where("wallet_bank_id = ? AND apply_status IN ?", bank.ID, []int{10, 18}).Count(&count)
if count > 0 {
infra.Response.Error(ctx, errcode.ErrInvalidArgument)
return
}
if err := impl.DBService.Model(&bank).Update("status", base.StatusArchived).Error; err != nil {
infra.Response.Error(ctx, err)
return
}
infra.Response.Success(ctx, gin.H{"archived": true})
}
}
// CreateWithdrawal 创建提现申请并预扣可提现余额。
func CreateWithdrawal(client string) gin.HandlerFunc {
return func(ctx *gin.Context) {
owner, ok := currentOwner(ctx, client)
if !ok {
return
}
var request struct {
BankIdentity string `json:"bank_identity" binding:"required"`
Amount int64 `json:"amount" binding:"required,gt=0"`
RequestNo string `json:"request_no" binding:"required"`
PaymentPassword string `json:"payment_password" binding:"required"`
Remark string `json:"remark"`
}
if ctx.ShouldBindJSON(&request) != nil {
infra.Response.Error(ctx, errcode.ErrInvalidArgument)
return
}
wallet, err := ensureWallet(impl.DBService, owner)
if err != nil || !VerifyPaymentPassword(owner.Identity, wallet, request.PaymentPassword) {
infra.Response.Error(ctx, errcode.ErrPassword)
return
}
var apply models.WalletApplyCash
err = impl.DBService.Transaction(func(tx *gorm.DB) error {
if err := tx.Clauses(clause.Locking{Strength: "UPDATE"}).First(&wallet, wallet.ID).Error; err != nil {
return err
}
if wallet.WithdrawalBalance < request.Amount {
return gorm.ErrInvalidData
}
var bank models.WalletBank
if err := tx.Where("identity = ? AND wallet_basic_id = ? AND status = ?", request.BankIdentity, wallet.ID, base.StatusEnable).First(&bank).Error; err != nil {
return err
}
apply = models.WalletApplyCash{
Entity: base.NewEntity(base.StatusEnable), ApplyStatus: 10, WalletBasicID: wallet.ID,
WalletBankID: bank.ID, CashNo: RecordNo("WD"), RequestNo: request.RequestNo,
Amount: request.Amount, Channel: "bank", Remark: request.Remark,
}
if err := tx.Create(&apply).Error; err != nil {
return err
}
return tx.Model(&wallet).Update("withdrawal_balance", gorm.Expr("withdrawal_balance - ?", request.Amount)).Error
})
if err != nil {
var existing models.WalletApplyCash
if impl.DBService.Where("request_no = ? AND wallet_basic_id = ?", request.RequestNo, wallet.ID).First(&existing).Error != nil {
infra.Response.Error(ctx, err)
return
}
apply = existing
}
infra.Response.Success(ctx, base.ResourceResponse(apply))
}
}
// ListWithdrawals 返回当前钱包提现申请。
func ListWithdrawals(client string) gin.HandlerFunc {
return func(ctx *gin.Context) {
owner, ok := currentOwner(ctx, client)
if !ok {
return
}
wallet, err := ensureWallet(impl.DBService, owner)
if err != nil {
infra.Response.Error(ctx, err)
return
}
var list []models.WalletApplyCash
if err := impl.DBService.Where("wallet_basic_id = ?", wallet.ID).Order("created_at desc").Find(&list).Error; err != nil {
infra.Response.Error(ctx, err)
return
}
infra.Response.Success(ctx, base.ResourceResponse(list))
}
}
func walletProof(wallet models.WalletBasic, client, phone, purpose, password, requestIdentity, code string) bool {
return wallet.PayPasswordHash != "" && bcrypt.CompareHashAndPassword([]byte(wallet.PayPasswordHash), []byte(password)) == nil ||
VerifyCode(client, phone, purpose, requestIdentity, code)
}
// VerifyPaymentPassword 校验支付密码,并在 Redis 中累计失败次数、短时锁定。
func VerifyPaymentPassword(ownerIdentity string, wallet models.WalletBasic, password string) bool {
lockKey := impl.RedisService.BuildKey("payment-password-lock", ownerIdentity)
var locked bool
if impl.RedisService.Get(lockKey, &locked) == nil && locked {
return false
}
if wallet.PayPasswordHash != "" && bcrypt.CompareHashAndPassword([]byte(wallet.PayPasswordHash), []byte(password)) == nil {
_ = impl.RedisService.Delete(impl.RedisService.BuildKey("payment-password-failures", ownerIdentity))
return true
}
failureKey := impl.RedisService.BuildKey("payment-password-failures", ownerIdentity)
var failures int
_ = impl.RedisService.Get(failureKey, &failures)
failures++
_ = impl.RedisService.Set(failureKey, failures, 15*time.Minute)
if failures >= 5 {
_ = impl.RedisService.Set(lockKey, true, 15*time.Minute)
}
return false
}
func protectField(value string) (string, string, error) {
reader := hkdf.New(sha256.New, []byte(config.Spec.Global.FieldEncryptionKey), nil, []byte("heqi-wallet-field-v1"))
key := make([]byte, 64)
if _, err := io.ReadFull(reader, key); err != nil {
return "", "", err
}
block, err := aes.NewCipher(key[:32])
if err != nil {
return "", "", err
}
gcm, err := cipher.NewGCM(block)
if err != nil {
return "", "", err
}
nonce := make([]byte, gcm.NonceSize())
if _, err := rand.Read(nonce); err != nil {
return "", "", err
}
sealed := gcm.Seal(nil, nonce, []byte(strings.TrimSpace(value)), nil)
mac := hmac.New(sha256.New, key[32:])
_, _ = mac.Write([]byte(strings.TrimSpace(value)))
return base64.RawStdEncoding.EncodeToString(append(nonce, sealed...)), hex.EncodeToString(mac.Sum(nil)), nil
}