#pragma once
#include <vector>
#include <string>
#include <map>
#include <fstream>
#include <sstream>
#include <iostream>
#include <limits>
#include <cmath>
#include <algorithm>
#include <stdexcept>
#include "opencv2/core.hpp"    
#include "opencv2/imgproc.hpp"
#include "../DrawOperator/nanoflann.hpp"

struct Sample {
    double x, y;
    int label;
};

struct FaciesConfig {
    std::string name;     // 相名称
    std::string code;     // 相代码
    COLORREF fillColor;   // 填充颜色
    COLORREF borderColor; // 边界颜色
    double x;             // 横坐标
    double y;             // 纵坐标
    int value;            // 相值
};

using namespace nanoflann;

struct PointCloud {
    std::vector<FaciesConfig> pts;
    inline size_t kdtree_get_point_count() const { return pts.size(); }
    inline double kdtree_distance(const double* p, const size_t idx, size_t) const {
        double dx = p[0] - pts[idx].x;
        double dy = p[1] - pts[idx].y;
        return dx * dx + dy * dy;
    }
    inline double kdtree_get_pt(const size_t idx, int dim) const {
        return dim == 0 ? pts[idx].x : pts[idx].y;
    }
    template<class BBOX> bool kdtree_get_bbox(BBOX&) const { return false; }
};


class KEDAlgorithm {
public:
    KEDAlgorithm();
    ~KEDAlgorithm();

    //KED生成沉积相网格(初版)
    bool KEDMeshAlgorithm(const CString& csvFile, const CString& kevFile,
        double grid_interval = 20, double bandwidth = 600, double beta = 0.18, int anchor_radius = 3,
        std::function<void(int completed, int total)> progressCallback = nullptr);

    /// <summary>
    /// IDW
    /// </summary>
    /// <param name="csvFile"></param>
    /// <param name="kevFile"></param>
    /// <param name="boundaryFile">边界文件</param>
    /// <param name="grid_interval">网格间隔</param>
    /// <param name="subblock_count">分块处理数量（默认 4）</param>
    /// <param name="idw_neighbors">IDW 邻居数</param>
    /// <param name="idw_power">IDW 幂指数（控制距离衰减强度）</param>
    /// <param name="use_shepard">是否使用 Shepard 改进型</param>
    /// <param name="smooth_boundary">边界处理方式（简化并圆滑）</param>
    /// <param name="progressCallback">进度回传</param>
    /// <returns></returns>
    bool IDWMeshAlgorithm(const CString& csvFile,
        const CString& kevFile,
        const CString& boundaryFile = _T(""),   
        double grid_interval = 10,              
        int subblock_count = 4,                 
        int idw_neighbors = 15,                 
        double idw_power = 3,                   
        bool use_shepard = true,                
        bool smooth_boundary = true,  
        bool isFaciesBorder = false,
        std::function<void(int completed, int total)> progressCallback = nullptr);

    /// <summary>
    /// 离散点最近邻分类 + 高斯平滑 + 形态学处理
    /// </summary>
    /// <param name="csvFile"></param>
    /// <param name="kevFile"></param>
    /// <param name="boundaryFile">边界文件</param>
    /// <param name="grid_interval">网格间隔</param>
    /// <param name="sigma">高斯平滑半径</param>
    /// <param name="open_iter">开运算迭代次数</param>
    /// <param name="close_iter">闭运算迭代次数</param>
    /// <param name="progressCallback">进度回传</param>
    /// <returns></returns>
    bool NNMeshAlgorithm(const CString& csvFile,
        const CString& kevFile,
        const CString& boundaryFile = _T(""),
        double grid_interval = 20.0,
        double sigma = 5.0,
        int open_iter = 1,
        int close_iter = 1,
        bool isFaciesBorder = false,
        std::function<void(int completed, int total)> progressCallback = nullptr);

    void StopTask();

    std::unordered_map<std::string, int> GetDepositionalMap();
    bool isCancelRequested() const { return m_cancelRequested.load(); }

    //由grd文件生成相界
    bool ProcessExistingGrd(
        const CString& grdFile,          // 已存在的 GRD 文件
        const CString& kevFile,          // 输出 KEV 文件
        CColorBase base,
        bool isFaciesBorder,
        std::function<void(int completed, int total)> progressCallback = nullptr);

private:
    // 新增：加载配置文件并初始化颜色表
    std::vector<FaciesConfig> LoadFaciesSettings(const CString& settingsFile,
        std::map<std::string, int>& labelMap);

    std::vector<Sample> ReadSamplesCSV(const CString& csvFile,
        std::map<std::string, int>& labelMap);

    double KdeLogDensityBrute(const std::vector<FaciesConfig>& samples,
        int label, double qx, double qy,
        double bandwidth) const;

    bool WriteDSAAFromGrid(const std::string& output_grd,
        const std::vector<float>& grid_data,
        int nx, int ny,
        double minx, double maxx,
        double miny, double maxy);

    bool GrdToKEVFile(const CString &gridFile, const CString &outputFile, std::vector<CCurve*> pCurves, CColorBase &base);

    //添加相界线
    bool CreateFaciesLines(std::shared_ptr<CXy> pXy, std::vector<CCurve*> pCurves);
    //添加相界线
    void AddFaciesCurves(std::shared_ptr<CXy> pXy, std::vector<CCurve*> pCurves, CString layerName);

    void PostProcessFaciesBoundaries(
        std::vector<CCurve*>& pCurves,
        double sigma_smooth,
        int min_seg_cells,
        double drop_closed_thresh,
        double dx, double dy);

    // 获取边界线/边框
    std::vector<CCurveEx*> GetDFDBorder(const CString& path);

    bool IsPointInPolygon(double qx, double qy, const std::vector<CCurveEx*>& polygons);

    //带边界极值处理
    bool WriteDSAAFromGridKeepZRange(
        const std::string& output_grd,
        const std::vector<float>& grid_data,
        int nx, int ny,
        double minx, double maxx,
        double miny, double maxy,
        float zmin, float zmax);

private:
    std::unordered_map<std::string, int> m_DepositionalMap;     //沉积相 对应z值关系
    std::map<int, COLORREF> m_ColorList;
    std::atomic<bool> m_cancelRequested{ false };
};