Extra2D/include/ui/progress_bar.h

#pragma once

#include <core/types.h>
#include <graphics/font.h>
#include <ui/widget.h>

namespace extra2d {

// ============================================================================
// 进度条组件 - 用于显示进度/百分比
// 适用于血条、能量条、加载进度、经验条等游戏场景
// ============================================================================
class ProgressBar : public Widget {
public:
  ProgressBar();
  ~ProgressBar() override = default;

  // ------------------------------------------------------------------------
  // 静态创建方法
  // ------------------------------------------------------------------------
  static Ptr<ProgressBar> create();
  static Ptr<ProgressBar> create(float min, float max, float value);

  // ------------------------------------------------------------------------
  // 数值范围
  // ------------------------------------------------------------------------
  void setRange(float min, float max);
  float getMin() const { return min_; }
  float getMax() const { return max_; }

  // ------------------------------------------------------------------------
  // 当前值
  // ------------------------------------------------------------------------
  void setValue(float value);
  float getValue() const { return value_; }

  // ------------------------------------------------------------------------
  // 获取百分比 (0.0 - 1.0)
  // ------------------------------------------------------------------------
  float getPercent() const;

  // ------------------------------------------------------------------------
  // 进度条方向
  // ------------------------------------------------------------------------
  enum class Direction { LeftToRight, RightToLeft, BottomToTop, TopToBottom };

  void setDirection(Direction dir);
  Direction getDirection() const { return direction_; }

  // ------------------------------------------------------------------------
  // 颜色设置
  // ------------------------------------------------------------------------
  void setBackgroundColor(const Color &color);
  Color getBackgroundColor() const { return bgColor_; }

  void setFillColor(const Color &color);
  Color getFillColor() const { return fillColor_; }

  // 渐变填充色（从 fillColor_ 到 fillColorEnd_）
  void setGradientFillEnabled(bool enabled);
  bool isGradientFillEnabled() const { return gradientEnabled_; }

  void setFillColorEnd(const Color &color);
  Color getFillColorEnd() const { return fillColorEnd_; }

  // ------------------------------------------------------------------------
  // 分段颜色（根据百分比自动切换颜色）
  // ------------------------------------------------------------------------
  void setSegmentedColorsEnabled(bool enabled);
  bool isSegmentedColorsEnabled() const { return segmentedColorsEnabled_; }

  // 设置分段阈值和颜色，例如：>70%绿色, >30%黄色, 其他红色
  void addColorSegment(float percentThreshold, const Color &color);
  void clearColorSegments();

  // ------------------------------------------------------------------------
  // 圆角设置
  // ------------------------------------------------------------------------
  void setCornerRadius(float radius);
  float getCornerRadius() const { return cornerRadius_; }

  void setRoundedCornersEnabled(bool enabled);
  bool isRoundedCornersEnabled() const { return roundedCornersEnabled_; }

  // ------------------------------------------------------------------------
  // 边框设置
  // ------------------------------------------------------------------------
  void setBorderEnabled(bool enabled);
  bool isBorderEnabled() const { return borderEnabled_; }

  void setBorderColor(const Color &color);
  Color getBorderColor() const { return borderColor_; }

  void setBorderWidth(float width);
  float getBorderWidth() const { return borderWidth_; }

  // ------------------------------------------------------------------------
  // 内边距（填充与边框的距离）
  // ------------------------------------------------------------------------
  void setPadding(float padding);
  float getPadding() const { return padding_; }

  // ------------------------------------------------------------------------
  // 文本显示
  // ------------------------------------------------------------------------
  void setTextEnabled(bool enabled);
  bool isTextEnabled() const { return textEnabled_; }

  void setFont(Ptr<FontAtlas> font);
  Ptr<FontAtlas> getFont() const { return font_; }

  void setTextColor(const Color &color);
  Color getTextColor() const { return textColor_; }

  // 文本格式："{value}/{max}", "{percent}%", "{value:.1f}" 等
  void setTextFormat(const std::string &format);
  const std::string &getTextFormat() const { return textFormat_; }

  // ------------------------------------------------------------------------
  // 动画效果
  // ------------------------------------------------------------------------
  void setAnimatedChangeEnabled(bool enabled);
  bool isAnimatedChangeEnabled() const { return animatedChangeEnabled_; }

  void setAnimationSpeed(float speed); // 每秒变化量
  float getAnimationSpeed() const { return animationSpeed_; }

  // 延迟显示效果（如LOL血条）
  void setDelayedDisplayEnabled(bool enabled);
  bool isDelayedDisplayEnabled() const { return delayedDisplayEnabled_; }

  void setDelayTime(float seconds);
  float getDelayTime() const { return delayTime_; }

  void setDelayedFillColor(const Color &color);
  Color getDelayedFillColor() const { return delayedFillColor_; }

  // ------------------------------------------------------------------------
  // 条纹效果
  // ------------------------------------------------------------------------
  void setStripedEnabled(bool enabled);
  bool isStripedEnabled() const { return stripedEnabled_; }

  void setStripeColor(const Color &color);
  Color getStripeColor() const { return stripeColor_; }

  void setStripeSpeed(float speed); // 条纹移动速度
  float getStripeSpeed() const { return stripeSpeed_; }

  Rect boundingBox() const override;

protected:
  void onUpdate(float deltaTime) override;
  void onDrawWidget(Renderer &renderer) override;

private:
  // 数值
  float min_ = 0.0f;
  float max_ = 100.0f;
  float value_ = 50.0f;

  // 方向
  Direction direction_ = Direction::LeftToRight;

  // 颜色
  Color bgColor_ = Color(0.2f, 0.2f, 0.2f, 1.0f);
  Color fillColor_ = Color(0.0f, 0.8f, 0.2f, 1.0f);
  Color fillColorEnd_ = Color(0.0f, 0.6f, 0.1f, 1.0f);
  bool gradientEnabled_ = false;

  // 分段颜色
  bool segmentedColorsEnabled_ = false;
  std::vector<std::pair<float, Color>> colorSegments_;

  // 圆角
  float cornerRadius_ = 4.0f;
  bool roundedCornersEnabled_ = true;

  // 边框
  bool borderEnabled_ = false;
  Color borderColor_ = Colors::White;
  float borderWidth_ = 1.0f;

  // 内边距
  float padding_ = 2.0f;

  // 文本
  bool textEnabled_ = false;
  Ptr<FontAtlas> font_;
  Color textColor_ = Colors::White;
  std::string textFormat_ = "{percent:.0f}%";

  // 动画
  bool animatedChangeEnabled_ = false;
  float animationSpeed_ = 100.0f;
  float displayValue_ = 50.0f; // 用于动画的显示值

  // 延迟显示
  bool delayedDisplayEnabled_ = false;
  float delayTime_ = 0.3f;
  float delayTimer_ = 0.0f;
  float delayedValue_ = 50.0f;
  Color delayedFillColor_ = Color(1.0f, 0.0f, 0.0f, 0.5f);

  // 条纹
  bool stripedEnabled_ = false;
  Color stripeColor_ = Color(1.0f, 1.0f, 1.0f, 0.2f);
  float stripeSpeed_ = 50.0f;
  float stripeOffset_ = 0.0f;

  Color getCurrentFillColor() const;
  std::string formatText() const;
  void drawRoundedRect(Renderer &renderer, const Rect &rect, const Color &color,
                       float radius);
  void fillRoundedRect(Renderer &renderer, const Rect &rect, const Color &color,
                       float radius);
  void drawStripes(Renderer &renderer, const Rect &rect);
};

} // namespace extra2d