tugas baru

internal/middleware/require_auth.go

@@ -0,0 +1,67 @@
+package middleware
+
+import (
+	"context"
+	"net/http"
+	"strings"
+
+	"5803025048/W04/internal/store"
+)
+
+type contextKey string
+
+const UserIDKey contextKey = "user_id"
+
+func GetUserID(ctx context.Context) string {
+	if val, ok := ctx.Value(UserIDKey).(string); ok {
+		return val
+	}
+	return ""
+}
+
+type AuthMiddleware struct {
+	sessionStore *store.SessionStore
+}
+
+func NewAuthMiddleware(sessionStore *store.SessionStore) *AuthMiddleware {
+	return &AuthMiddleware{sessionStore: sessionStore}
+}
+
+func (m *AuthMiddleware) RequireAuth(next http.Handler) http.Handler {
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		authHeader := r.Header.Get("Authorization")
+		if authHeader == "" {
+			http.Error(w, "Unauthorized", http.StatusUnauthorized)
+			return
+		}
+
+		token := authHeader
+		if strings.HasPrefix(strings.ToLower(authHeader), "bearer ") {
+			token = authHeader[7:]
+		}
+		token = strings.TrimSpace(token)
+		if token == "" {
+			http.Error(w, "Unauthorized", http.StatusUnauthorized)
+			return
+		}
+
+		session, err := m.sessionStore.Get(r.Context(), token)
+		if err != nil || session == nil {
+			http.Error(w, "Unauthorized", http.StatusUnauthorized)
+			return
+		}
+
+		ctx := context.WithValue(r.Context(), UserIDKey, session.UserID)
+		next.ServeHTTP(w, r.WithContext(ctx))
+	})
+}
+
+func (m *AuthMiddleware) RequireAuthFunc(next http.HandlerFunc) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		m.RequireAuth(next).ServeHTTP(w, r)
+	}
+}
+
+func RequireAuth(sessionStore *store.SessionStore) func(http.Handler) http.Handler {
+	return NewAuthMiddleware(sessionStore).RequireAuth
+}