init push

internal/service/cookies.go

@@ -0,0 +1,29 @@
+package service
+
+import (
+	"strings"
+)
+
+// CookieValues returns all values for the given cookie name from a raw Cookie header.
+// It preserves header order so callers can try candidates until one validates.
+func CookieValues(rawHeader, cookieName string) []string {
+	rawHeader = strings.TrimSpace(rawHeader)
+	cookieName = strings.TrimSpace(cookieName)
+	if rawHeader == "" || cookieName == "" {
+		return nil
+	}
+
+	prefix := cookieName + "="
+	values := make([]string, 0, 2)
+	for _, part := range strings.Split(rawHeader, ";") {
+		part = strings.TrimSpace(part)
+		if !strings.HasPrefix(part, prefix) {
+			continue
+		}
+		value := strings.TrimSpace(strings.TrimPrefix(part, prefix))
+		if value != "" {
+			values = append(values, value)
+		}
+	}
+	return values
+}