/**
 * MIT License
 *
 * Copyright (C) 2024 Huawei Device Co., Ltd.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

#ifndef HARMONY_LINEARTEXTGRADIENTLAYOUTMANAGER_H
#define HARMONY_LINEARTEXTGRADIENTLAYOUTMANAGER_H
#include <react/renderer/attributedstring/AttributedString.h>
#include <react/renderer/attributedstring/ParagraphAttributes.h>
#include <react/renderer/core/LayoutConstraints.h>
#include <react/renderer/textlayoutmanager/TextLayoutManager.h>

namespace facebook::react {

/*
 * Serves as a middle man between `ParagraphShadowNode` and `TextLayoutManager`.
 * On iOS, caches `NSTextStorage` for individual `ParagraphShadowNode` to make
 * sure only one `NSTextStorage` is created for every string. `NSTextStorage`
 * can be re created on native views layer but it is expensive. On Android, this
 * class does not cache anything.
 */
class LinearTextGradientLayoutManager {
 public:
  TextMeasurement measure(
      AttributedString const &attributedString,
      ParagraphAttributes const &paragraphAttributes,
      LayoutConstraints layoutConstraints) const;

  LinesMeasurements measureLines(
      AttributedString const &attributedString,
      ParagraphAttributes const &paragraphAttributes,
      Size size) const;

  void setTextLayoutManager(
      std::shared_ptr<TextLayoutManager const> textLayoutManager) const;

  /*
   * Returns an opaque pointer to platform-specific `TextLayoutManager`.
   * Is used on a native views layer to delegate text rendering to the manager.
   */
  std::shared_ptr<TextLayoutManager const> getTextLayoutManager() const;

  /*
   * Returns opaque shared_ptr holding `NSTextStorage`.
   * May be nullptr.
   * Is used on a native views layer to prevent `NSTextStorage` from being
   * created twice.
   */
  std::shared_ptr<void> getHostTextStorage() const;

 private:
  std::shared_ptr<TextLayoutManager const> mutable textLayoutManager_{};
  std::shared_ptr<void> mutable hostTextStorage_{};

  /* The width Yoga set as maximum width.
   * Yoga sometimes calls measure twice with two
   * different maximum width. One if available space.
   * The other one is exact space needed for the string.
   * This happens when node is dirtied but its size is not affected.
   * To deal with this inefficiency, we cache `TextMeasurement` for each
   * `ParagraphShadowNode`. If Yoga tries to re-measure with available width
   * or exact width, we provide it with the cached value.
   */
  Float mutable availableWidth_{};
  TextMeasurement mutable cachedTextMeasurement_{};

  size_t mutable hash_{};
};
} // namespace facebook::react
#endif //HARMONY_LINEARTEXTGRADIENTLAYOUTMANAGER_H