// Template duplicate helpers.

function buildDuplicateTemplateName(name) {
  const source = String(name || 'Template').trim() || 'Template';
  return 'Copy of ' + source;
}

function cloneRegion(region) {
  const cloned = JSON.parse(JSON.stringify(region || {}));
  delete cloned.id;
  delete cloned.template_id;
  delete cloned.created_at;
  delete cloned.modified_at;
  delete cloned.created_by;
  delete cloned.modified_by;
  return cloned;
}

function buildDuplicateTemplate(template, duplicateName) {
  const source = template || {};
  return {
    id: null,
    name: String(duplicateName || buildDuplicateTemplateName(source.name)).trim(),
    canvas_size_id: source.canvas_size_id || null,
    canvas_size_width: source.canvas_size_width,
    canvas_size_height: source.canvas_size_height,
    background_color: source.background_color,
    background_image_path: source.background_image_path,
    background_gradient: source.background_gradient,
    region_usage: [],
    regions: Array.isArray(source.regions) ? source.regions.map(cloneRegion) : []
  };
}

module.exports = {
  buildDuplicateTemplateName,
  buildDuplicateTemplate
};