// Copyright 2025 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "third_party/blink/renderer/core/css/css_mixin_rule.h"

#include "third_party/blink/renderer/core/css/css_function_rule.h"
#include "third_party/blink/renderer/core/css/css_grouping_rule.h"
#include "third_party/blink/renderer/core/css/css_markup.h"
#include "third_party/blink/renderer/core/css/css_style_sheet.h"
#include "third_party/blink/renderer/core/css/style_rule.h"
#include "third_party/blink/renderer/platform/wtf/text/string_builder.h"
#include "third_party/blink/renderer/platform/wtf/text/wtf_string.h"

namespace blink {

class MediaQuerySetOwner;

CSSMixinRule::CSSMixinRule(StyleRuleMixin* mixin_rule, CSSStyleSheet* parent)
    : CSSGroupingRule(mixin_rule, parent) {}

String CSSMixinRule::name() const {
  return MixinRule().GetName();
}

String CSSMixinRule::cssText() const {
  StringBuilder result;
  result.Append("@mixin ");
  SerializeIdentifier(name(), result);

  // A parameterless @mixin serializes without parentheses.
  const HeapVector<StyleRuleFunction::Parameter>& parameters =
      MixinRule().GetParameters();
  if (!parameters.empty()) {
    result.Append('(');
    bool first_param = true;
    for (const StyleRuleFunction::Parameter& param : parameters) {
      if (!first_param) {
        result.Append(", ");
      }
      if (param.name == "@contents") {
        result.Append(param.name);
      } else {
        SerializeIdentifier(param.name, result);
      }
      if (!param.type.IsUniversal()) {
        result.Append(" ");
        AppendCSSType(param.type, result);
      }
      if (param.default_value) {
        result.Append(": ");
        result.Append(param.default_value->Serialize());
      }
      first_param = false;
    }
    result.Append(')');
  }

  AppendCSSTextForItems(result);
  return result.ReleaseString();
}

}  // namespace blink