Initial commit

util/util.go

@@ -0,0 +1,49 @@
+package utils
+
+import (
+	"MiauInv/auth"
+	"crypto/rand"
+	"crypto/sha256"
+	"encoding/base64"
+	"encoding/hex"
+	"net/http"
+
+	"github.com/google/uuid"
+)
+
+func GenerateUUID() string {
+	return uuid.New().String()
+}
+func GenerateSecret() string {
+	b := make([]byte, 64)
+	_, err := rand.Read(b)
+	if err != nil {
+		return err.Error()
+	}
+	return base64.StdEncoding.EncodeToString(b)
+}
+func GenerateRefreshToken() (string, error) {
+	b := make([]byte, 32)
+	if _, err := rand.Read(b); err != nil {
+		return "", err
+	}
+	return base64.RawURLEncoding.EncodeToString(b), nil
+}
+func HashToken(token string) string {
+	hash := sha256.Sum256([]byte(token))
+	return hex.EncodeToString(hash[:])
+}
+func IsLoggedIn(w http.ResponseWriter, r *http.Request) (*auth.Claims, bool) {
+	claimsRaw := r.Context().Value(auth.UserContextKey)
+	if claimsRaw == nil {
+		http.Error(w, "No claims in context", http.StatusUnauthorized)
+		return nil, false
+	}
+
+	claims, ok := claimsRaw.(*auth.Claims)
+	if !ok {
+		http.Error(w, "Invalid claims", http.StatusUnauthorized)
+		return nil, false
+	}
+	return claims, true
+}