#pragma once
#include <cstddef>
#include <memory_resource>
#include <span>
#include <utility>
#include <vector>
#include "../base/Color.h"
#include "../base/Memory.h"
#include "../base/Style.h"
#include "Interpolation.h"
#include "global.h"
namespace renderive {
struct Sweep_Spectrum_Private;
/// @brief 扫频频谱图元，按块组织输入频率数据。
class LIB_DECL Sweep_Spectrum : public Renderable {
public:
    /// @brief 创建扫频频谱图元。
    Sweep_Spectrum();
    /// @brief 写入一块扫频数据。
    void append_block(std::span<const double> data);
    /// @brief 移动写入一块扫频数据。
    void append_block(std::pmr::vector<double>&& data);
    /// @brief 用 writer 填充并写入一块扫频数据。
    template <typename Writer>
    void write_block(std::size_t count, Writer&& writer) {
        std::pmr::vector<double> values(memory_resource(Memory_Domain::Other));
        values.resize(count);
        std::forward<Writer>(writer)(std::span<double>(values.data(), values.size()));
        append_block(std::move(values));
    }
    /// @brief 绑定频率轴。
    PROP(std::shared_ptr<Axis>, frequency_axis)
    /// @brief 绑定功率轴。
    PROP(std::shared_ptr<Axis>, power_axis)
    /// @brief 扫频频率范围。
    PROP(Range, frequency_range)
    /// @brief 每块频率采样点数。
    PROP(int, bins_per_block)
    /// @brief 扫频块数量。
    PROP(int, block_count)
    /// @brief 频谱线画笔。
    PROP(Pen, pen)
    /// @brief 当前扫频位置画笔。
    PROP(Pen, cur_frequency_pen)
    /// @brief 是否只生成当前可见频率范围。
    PROP(bool, visible_range_only)
    /// @brief 折线插值模式。
    PROP(Line_Interpolation_Mode, interpolation_mode)
    struct Builder;
private:
    Sweep_Spectrum_Private* d();
    Render_Object_Owner create_render_data() override;
    Render_Object_Owner create_render_state() override;
    Render_Object_Owner create_input_data() override;
};
struct Sweep_Spectrum_Prop {
    std::weak_ptr<Axis> frequency_axis{};
    std::weak_ptr<Axis> power_axis{};
    Range frequency_range{};
    int bins_per_block{};
    int block_num{};
    Pen pen;
    Pen current_frequency_pen;
    bool visible_range_only = true;
    Line_Interpolation_Mode interpolation_mode = Line_Interpolation_Mode::Linear_Value;
    Sweep_Spectrum_Prop() {
        pen = Pen{Color::yellow()};
        current_frequency_pen = Pen{Color::red(), 2.0};
    }
};
/// @brief 扫频频谱构造器。
struct LIB_DECL Sweep_Spectrum::Builder : Sweep_Spectrum_Prop {
    PROP_B(std::shared_ptr<Renderable>, parent)
    PROP_B(std::shared_ptr<Axis>, frequency_axis)
    PROP_B(std::shared_ptr<Axis>, power_axis)
    PROP_B(Range, frequency_range)
    PROP_B(int, bins_per_block)
    PROP_B(int, block_num)
    PROP_B(Pen, pen)
    PROP_B(Pen, current_frequency_pen)
    PROP_B(bool, visible_range_only)
    PROP_B(Line_Interpolation_Mode, interpolation_mode)
    /// 创建扫频构造器。
    Builder(std::shared_ptr<Renderable> parent, std::shared_ptr<Axis> frequency_axis, std::shared_ptr<Axis> power_axis);
    /// 构建并返回扫频对象。
    std::shared_ptr<Sweep_Spectrum> build();
    std::shared_ptr<Renderable> parent{};
};
} // namespace renderive