initial rebuild

internal/middleware/auth.go

@@ -0,0 +1,85 @@
+package middleware
+
+import (
+	"context"
+	"net/http"
+	"strings"
+
+	"github.com/glueops/autoglue/internal/db"
+	"github.com/glueops/autoglue/internal/db/models"
+	"github.com/golang-jwt/jwt/v5"
+	"github.com/google/uuid"
+)
+
+type AuthClaims struct {
+	Orgs  []string `json:"orgs"`
+	Roles []string `json:"roles"`
+	jwt.RegisteredClaims
+}
+
+type AuthContext struct {
+	UserID         uuid.UUID
+	OrganizationID uuid.UUID
+	OrgRole        string      // Role in the org
+	Claims         *AuthClaims `json:"claims,omitempty" swaggerignore:"true"`
+}
+
+type contextKey struct{}
+
+var authContextKey = contextKey{}
+
+func AuthMiddleware(secret string) func(http.Handler) http.Handler {
+	return func(next http.Handler) http.Handler {
+		return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+			authHeader := r.Header.Get("Authorization")
+			if authHeader == "" || !strings.HasPrefix(strings.ToLower(authHeader), "bearer ") {
+				http.Error(w, "Unauthorized", http.StatusUnauthorized)
+				return
+			}
+
+			tokenStr := strings.TrimPrefix(authHeader, "Bearer ")
+			claims := &AuthClaims{}
+
+			token, err := jwt.ParseWithClaims(tokenStr, claims, func(token *jwt.Token) (interface{}, error) {
+				return []byte(secret), nil
+			})
+			if err != nil || !token.Valid {
+				http.Error(w, "Invalid token", http.StatusUnauthorized)
+				return
+			}
+
+			userUUID, err := uuid.Parse(claims.Subject)
+			if err != nil {
+				http.Error(w, "invalid user id", http.StatusUnauthorized)
+				return
+			}
+
+			authCtx := &AuthContext{
+				UserID: userUUID,
+				Claims: claims,
+			}
+
+			if orgID := r.Header.Get("X-Org-ID"); orgID != "" {
+				orgUUID, _ := uuid.Parse(orgID)
+
+				var member models.Member
+				if err := db.DB.Where("user_id = ? AND organization_id = ?", claims.Subject, orgID).First(&member).Error; err != nil {
+					http.Error(w, "User not a member of the organization", http.StatusForbidden)
+					return
+				}
+				authCtx.OrganizationID = orgUUID
+				authCtx.OrgRole = string(member.Role)
+			}
+
+			ctx := context.WithValue(r.Context(), authContextKey, authCtx)
+			next.ServeHTTP(w, r.WithContext(ctx))
+		})
+	}
+}
+
+func GetAuthContext(r *http.Request) *AuthContext {
+	if ac, ok := r.Context().Value(authContextKey).(*AuthContext); ok {
+		return ac
+	}
+	return nil
+}