init

backend/internal/pkg/jwt/jwt.go

@@ -0,0 +1,58 @@
+package jwt
+
+import (
+	"errors"
+	"time"
+
+	"github.com/golang-jwt/jwt/v5"
+)
+
+type Claims struct {
+	UserID   uint   `json:"user_id"`
+	Username string `json:"username"`
+	Role     string `json:"role"`
+	jwt.RegisteredClaims
+}
+
+type Manager struct {
+	secret []byte
+	expire time.Duration
+}
+
+func NewManager(secret string) *Manager {
+	return &Manager{
+		secret: []byte(secret),
+		expire: 7 * 24 * time.Hour,
+	}
+}
+
+func (m *Manager) Generate(userID uint, username, role string) (string, error) {
+	claims := Claims{
+		UserID:   userID,
+		Username: username,
+		Role:     role,
+		RegisteredClaims: jwt.RegisteredClaims{
+			ExpiresAt: jwt.NewNumericDate(time.Now().Add(m.expire)),
+			IssuedAt:  jwt.NewNumericDate(time.Now()),
+		},
+	}
+	token := jwt.NewWithClaims(jwt.SigningMethodHS256, claims)
+	return token.SignedString(m.secret)
+}
+
+func (m *Manager) Parse(tokenStr string) (*Claims, error) {
+	token, err := jwt.ParseWithClaims(tokenStr, &Claims{}, func(t *jwt.Token) (interface{}, error) {
+		if _, ok := t.Method.(*jwt.SigningMethodHMAC); !ok {
+			return nil, errors.New("unexpected signing method")
+		}
+		return m.secret, nil
+	})
+	if err != nil {
+		return nil, err
+	}
+	claims, ok := token.Claims.(*Claims)
+	if !ok || !token.Valid {
+		return nil, errors.New("invalid token")
+	}
+	return claims, nil
+}

backend/internal/pkg/response/response.go

@@ -0,0 +1,52 @@
+package response
+
+import (
+	"net/http"
+
+	"github.com/gin-gonic/gin"
+)
+
+type Body struct {
+	Code    int         `json:"code"`
+	Message string      `json:"message"`
+	Data    interface{} `json:"data,omitempty"`
+}
+
+func OK(c *gin.Context, data interface{}) {
+	c.JSON(http.StatusOK, Body{Code: 0, Message: "ok", Data: data})
+}
+
+func Fail(c *gin.Context, httpStatus int, code int, message string) {
+	c.JSON(httpStatus, Body{Code: code, Message: message})
+}
+
+func BadRequest(c *gin.Context, message string) {
+	Fail(c, http.StatusBadRequest, 400, message)
+}
+
+func Unauthorized(c *gin.Context, message string) {
+	Fail(c, http.StatusUnauthorized, 401, message)
+}
+
+func Forbidden(c *gin.Context, message string) {
+	Fail(c, http.StatusForbidden, 403, message)
+}
+
+func NotFound(c *gin.Context, message string) {
+	Fail(c, http.StatusNotFound, 404, message)
+}
+
+func ServerError(c *gin.Context, message string) {
+	Fail(c, http.StatusInternalServerError, 500, message)
+}
+
+type PageData struct {
+	List  interface{} `json:"list"`
+	Total int64       `json:"total"`
+	Page  int         `json:"page"`
+	Size  int         `json:"size"`
+}
+
+func Page(c *gin.Context, list interface{}, total int64, page, size int) {
+	OK(c, PageData{List: list, Total: total, Page: page, Size: size})
+}