rolling back to golangci-lint 1.20.1 + moving normize filename to resource & tests with a file with special chars in its name + webhookurl custom headers done + preparing remote url custom headers

internal/app/xhttp/pkg/resource/header.go

@@ -0,0 +1,37 @@
+package resource
+
+import (
+	"strings"
+)
+
+const (
+	// RemoteURLCustomHeaderCanonicalBaseKey is the base key
+	// of custom headers send to the remote URL.
+	RemoteURLCustomHeaderCanonicalBaseKey string = "Gotenberg-Remoteurl-"
+	// WebhookURLCustomHeaderCanonicalBaseKey is the base key
+	// of custom headers send to the webhook URL.
+	WebhookURLCustomHeaderCanonicalBaseKey string = "Gotenberg-Webhookurl-"
+)
+
+func fetchCustomHeaders(r Resource, baseKey string) map[string][]string {
+	customHeaders := make(map[string][]string)
+	for key, value := range r.customHeaders {
+		if strings.Contains(key, baseKey) {
+			realKey := strings.Replace(key, baseKey, "", 1)
+			customHeaders[realKey] = value
+		}
+	}
+	return customHeaders
+}
+
+// RemoteURLCustomHeaders is a helper for retrieving
+// the custom headers for the URL conversion.
+func RemoteURLCustomHeaders(r Resource) map[string][]string {
+	return fetchCustomHeaders(r, RemoteURLCustomHeaderCanonicalBaseKey)
+}
+
+// WebhookURLCustomHeaders is a helper for retrieving
+// the custom headers for the webhook URL.
+func WebhookURLCustomHeaders(r Resource) map[string][]string {
+	return fetchCustomHeaders(r, WebhookURLCustomHeaderCanonicalBaseKey)
+}