config: add branding settings (#3558)

internal/httputil/branding.go

@@ -0,0 +1,35 @@
+package httputil
+
+// The BrandingOptions customize the user info and error pages.
+type BrandingOptions interface {
+	GetPrimaryColor() string
+	GetSecondaryColor() string
+	GetDarkmodePrimaryColor() string
+	GetDarkmodeSecondaryColor() string
+	GetLogoUrl() string
+	GetFaviconUrl() string
+	GetErrorMessageFirstParagraph() string
+}
+
+// AddBrandingOptionsToMap adds the branding options to the map.
+func AddBrandingOptionsToMap(dst map[string]any, brandingOptions BrandingOptions) {
+	if brandingOptions == nil {
+		return
+	}
+
+	if brandingOptions.GetPrimaryColor() != "" {
+		dst["primaryColor"] = brandingOptions.GetPrimaryColor()
+	}
+	if brandingOptions.GetSecondaryColor() != "" {
+		dst["secondaryColor"] = brandingOptions.GetSecondaryColor()
+	}
+	if brandingOptions.GetLogoUrl() != "" {
+		dst["logoUrl"] = brandingOptions.GetLogoUrl()
+	}
+	if brandingOptions.GetFaviconUrl() != "" {
+		dst["faviconUrl"] = brandingOptions.GetFaviconUrl()
+	}
+	if brandingOptions.GetErrorMessageFirstParagraph() != "" {
+		dst["errorMessageFirstParagraph"] = brandingOptions.GetErrorMessageFirstParagraph()
+	}
+}