⚡ update environment mode handling, refactor user registration logic, and add username/email existence checks

pkg/utils/jwt.go

@@ -0,0 +1,52 @@
+package utils
+
+import (
+	"github.com/golang-jwt/jwt/v5"
+	"github.com/snowykami/neo-blog/pkg/constant"
+	"time"
+)
+
+type jwtUtils struct{}
+
+var Jwt = jwtUtils{}
+
+type Claims struct {
+	jwt.RegisteredClaims
+	UserID     uint   `json:"user_id"`
+	SessionKey string `json:"session_key"` // 会话ID，仅在有状态Token中使用
+	Stateful   bool   `json:"stateful"`    // 是否为有状态Token
+}
+
+// NewClaims 创建一个新的Claims实例，对于无状态
+func (j *jwtUtils) NewClaims(userID uint, sessionKey string, stateful bool, duration time.Duration) *Claims {
+	return &Claims{
+		UserID:     userID,
+		SessionKey: sessionKey,
+		Stateful:   stateful,
+		RegisteredClaims: jwt.RegisteredClaims{
+			IssuedAt:  jwt.NewNumericDate(time.Now()),
+			ExpiresAt: jwt.NewNumericDate(time.Now().Add(duration)),
+		},
+	}
+}
+
+// ToString 将Claims转换为JWT字符串
+func (c *Claims) ToString() (string, error) {
+	token := jwt.NewWithClaims(jwt.SigningMethodHS256, c)
+	return token.SignedString([]byte(Env.Get(constant.EnvKeyJwtSecrete, "default_jwt_secret")))
+}
+
+// ParseJsonWebTokenWithoutState 解析JWT令牌，不对有状态的Token进行状态检查
+func (j *jwtUtils) ParseJsonWebTokenWithoutState(tokenString string) (*Claims, error) {
+	claims := &Claims{}
+	token, err := jwt.ParseWithClaims(tokenString, claims, func(token *jwt.Token) (any, error) {
+		return []byte(Env.Get(constant.EnvKeyJwtSecrete, "default_jwt_secret")), nil
+	})
+	if err != nil {
+		return nil, err
+	}
+	if !token.Valid {
+		return nil, jwt.ErrSignatureInvalid
+	}
+	return claims, nil
+}