#ifndef TEMPERATURE_CHART_H
#define TEMPERATURE_CHART_H

#include <gtk/gtk.h>
#include <cairo.h>
#include <string>
#include <vector>
#include <map>
#include <cstdint>

struct DataPoint {
    double temperature;
    int64_t timestamp;
};

struct SeriesData {
    std::vector<DataPoint> points;
    GdkRGBA color;
    std::string name;
};

class TemperatureChart {
public:
    TemperatureChart(GtkWidget *parent = nullptr);
    ~TemperatureChart();
    
    GtkWidget* getWidget() const { return drawingArea; }
    
    void addTemperatureData(const std::string &device, const std::string &sensor, 
                           double temperature, int64_t timestamp);
    void clear();
    void draw();
    
    // Get list of devices with their colors
    std::vector<std::pair<std::string, GdkRGBA>> getDeviceColors() const;
    void drawChart(GtkDrawingArea *area, cairo_t *cr, int width, int height);

private:
    void setupColors();
    GdkRGBA getColorForDevice(const std::string &device);
    void redraw();
    void updateThemeColors();
    
    static gboolean onTick(gpointer userData);
    static void onLeave(GtkEventControllerMotion *motion, gpointer userData);
    
    struct NearestPoint {
        bool found;
        double temperature;
        int64_t timestamp;
        std::string seriesName;
        double distance;
    };
    
    NearestPoint findNearestDataPoint(double mouseX, double mouseY, int width, int height);
    void showTooltip(double x, double y, const NearestPoint &point);
    void hideTooltip();
    
    GtkWidget *drawingArea;
    GtkWidget *tooltipWindow;
    GtkWidget *tooltipLabel;
    std::map<std::string, SeriesData> seriesMap;
    std::map<std::string, GdkRGBA> colorMap;
    int maxDataPoints;
    guint tickHandler;
    double lastMouseX, lastMouseY;
    
    // Cairo drawing state
    double minTemp, maxTemp;
    int64_t minTime, maxTime;
    static constexpr int MAX_TIME_MS = 600000; // 10 minutes in milliseconds
    static constexpr double MIN_TEMP = 10.0;
    static constexpr double MAX_TEMP = 110.0;
    
    // Theme colors
    GdkRGBA bgColor, textColor, gridColor, axisColor;
};

#endif // TEMPERATURE_CHART_H