// 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.

#ifndef CONTENT_BROWSER_PRELOADING_SPECULATION_RULES_SPECULATION_RULES_UTIL_H_
#define CONTENT_BROWSER_PRELOADING_SPECULATION_RULES_SPECULATION_RULES_UTIL_H_

#include "base/feature_list.h"
#include "third_party/blink/public/common/features.h"
#include "third_party/blink/public/mojom/speculation_rules/speculation_rules.mojom-shared.h"

namespace content {

// Distinguishes the given speculation eagerness should be treated as
// "immediate" eagerness. Note that This means that non-`kImmediate` eagerness
// may behaves as `kImmediate`.
inline constexpr bool IsImmediateSpeculationEagerness(
    blink::mojom::SpeculationEagerness eagerness) {
  switch (eagerness) {
    case blink::mojom::SpeculationEagerness::kImmediate:
      return true;
    // Historically, `kEager` behaves the same as `kImmediate`, but it is
    // changed as ongoing improvements on `kEager` trigger strategies.
    case blink::mojom::SpeculationEagerness::kEager:
      return !base::FeatureList::IsEnabled(
                 blink::features::kPreloadingEagerHoverHeuristics) &&
             !base::FeatureList::IsEnabled(
                 blink::features::kPreloadingEagerViewportHeuristics);
    case blink::mojom::SpeculationEagerness::kModerate:
    case blink::mojom::SpeculationEagerness::kConservative:
      return false;
  }
}

}  // namespace content

#endif  // CONTENT_BROWSER_PRELOADING_SPECULATION_RULES_SPECULATION_RULES_UTIL_H_