fix

backend-old/internal/api/middleware/auth.go

@@ -0,0 +1,217 @@
+package middleware
+
+import (
+	"net/http"
+	"strings"
+	"github.com/gin-gonic/gin"
+	"photography-backend/internal/service/auth"
+	"photography-backend/internal/model/entity"
+)
+
+// AuthMiddleware 认证中间件
+type AuthMiddleware struct {
+	jwtService *auth.JWTService
+}
+
+// NewAuthMiddleware 创建认证中间件
+func NewAuthMiddleware(jwtService *auth.JWTService) *AuthMiddleware {
+	return &AuthMiddleware{
+		jwtService: jwtService,
+	}
+}
+
+// RequireAuth 需要认证的中间件
+func (m *AuthMiddleware) RequireAuth() gin.HandlerFunc {
+	return func(c *gin.Context) {
+		// 从Header中获取Authorization
+		authHeader := c.GetHeader("Authorization")
+		if authHeader == "" {
+			c.JSON(http.StatusUnauthorized, gin.H{
+				"error": "Authorization header is required",
+			})
+			c.Abort()
+			return
+		}
+		
+		// 检查Bearer前缀
+		if !strings.HasPrefix(authHeader, "Bearer ") {
+			c.JSON(http.StatusUnauthorized, gin.H{
+				"error": "Invalid authorization header format",
+			})
+			c.Abort()
+			return
+		}
+		
+		// 提取token
+		token := strings.TrimPrefix(authHeader, "Bearer ")
+		
+		// 验证token
+		claims, err := m.jwtService.ValidateToken(token)
+		if err != nil {
+			c.JSON(http.StatusUnauthorized, gin.H{
+				"error": "Invalid or expired token",
+			})
+			c.Abort()
+			return
+		}
+		
+		// 将用户信息存入上下文
+		c.Set("user_id", claims.UserID)
+		c.Set("username", claims.Username)
+		c.Set("user_role", claims.Role)
+		
+		c.Next()
+	}
+}
+
+// RequireRole 需要特定角色的中间件
+func (m *AuthMiddleware) RequireRole(requiredRole string) gin.HandlerFunc {
+	return func(c *gin.Context) {
+		userRole, exists := c.Get("user_role")
+		if !exists {
+			c.JSON(http.StatusUnauthorized, gin.H{
+				"error": "User role not found in context",
+			})
+			c.Abort()
+			return
+		}
+		
+		roleStr, ok := userRole.(string)
+		if !ok {
+			c.JSON(http.StatusUnauthorized, gin.H{
+				"error": "Invalid user role",
+			})
+			c.Abort()
+			return
+		}
+		
+		// 检查角色权限
+		if !m.hasPermission(roleStr, requiredRole) {
+			c.JSON(http.StatusForbidden, gin.H{
+				"error": "Insufficient permissions",
+			})
+			c.Abort()
+			return
+		}
+		
+		c.Next()
+	}
+}
+
+// RequireAdmin 需要管理员权限的中间件
+func (m *AuthMiddleware) RequireAdmin() gin.HandlerFunc {
+	return m.RequireRole(string(entity.UserRoleAdmin))
+}
+
+// RequirePhotographer 需要摄影师权限的中间件
+func (m *AuthMiddleware) RequirePhotographer() gin.HandlerFunc {
+	return m.RequireRole(string(entity.UserRolePhotographer))
+}
+
+// OptionalAuth 可选认证中间件
+func (m *AuthMiddleware) OptionalAuth() gin.HandlerFunc {
+	return func(c *gin.Context) {
+		authHeader := c.GetHeader("Authorization")
+		if authHeader == "" {
+			c.Next()
+			return
+		}
+		
+		if !strings.HasPrefix(authHeader, "Bearer ") {
+			c.Next()
+			return
+		}
+		
+		token := strings.TrimPrefix(authHeader, "Bearer ")
+		claims, err := m.jwtService.ValidateToken(token)
+		if err != nil {
+			c.Next()
+			return
+		}
+		
+		// 将用户信息存入上下文
+		c.Set("user_id", claims.UserID)
+		c.Set("username", claims.Username)
+		c.Set("user_role", claims.Role)
+		
+		c.Next()
+	}
+}
+
+// GetCurrentUser 获取当前用户ID
+func GetCurrentUser(c *gin.Context) (uint, bool) {
+	userID, exists := c.Get("user_id")
+	if !exists {
+		return 0, false
+	}
+	
+	id, ok := userID.(uint)
+	return id, ok
+}
+
+// GetCurrentUserRole 获取当前用户角色
+func GetCurrentUserRole(c *gin.Context) (string, bool) {
+	userRole, exists := c.Get("user_role")
+	if !exists {
+		return "", false
+	}
+	
+	role, ok := userRole.(string)
+	return role, ok
+}
+
+// GetCurrentUsername 获取当前用户名
+func GetCurrentUsername(c *gin.Context) (string, bool) {
+	username, exists := c.Get("username")
+	if !exists {
+		return "", false
+	}
+	
+	name, ok := username.(string)
+	return name, ok
+}
+
+// IsAuthenticated 检查是否已认证
+func IsAuthenticated(c *gin.Context) bool {
+	_, exists := c.Get("user_id")
+	return exists
+}
+
+// IsAdmin 检查是否为管理员
+func IsAdmin(c *gin.Context) bool {
+	role, exists := GetCurrentUserRole(c)
+	if !exists {
+		return false
+	}
+	return role == string(entity.UserRoleAdmin)
+}
+
+// IsPhotographer 检查是否为摄影师或以上
+func IsPhotographer(c *gin.Context) bool {
+	role, exists := GetCurrentUserRole(c)
+	if !exists {
+		return false
+	}
+	return role == string(entity.UserRolePhotographer) || role == string(entity.UserRoleAdmin)
+}
+
+// hasPermission 检查权限
+func (m *AuthMiddleware) hasPermission(userRole, requiredRole string) bool {
+	roleLevel := map[string]int{
+		string(entity.UserRoleUser):         1,
+		string(entity.UserRolePhotographer): 2,
+		string(entity.UserRoleAdmin):        3,
+	}
+	
+	userLevel, exists := roleLevel[userRole]
+	if !exists {
+		return false
+	}
+	
+	requiredLevel, exists := roleLevel[requiredRole]
+	if !exists {
+		return false
+	}
+	
+	return userLevel >= requiredLevel
+}