// Grafik Routinen
#define GRAFIK

#include "handlebme280.h"
#include "main.h"
#include "grafik.h"

#define DRAW_BUF_SIZE (SCREEN_WIDTH * SCREEN_HEIGHT / 10 * (LV_COLOR_DEPTH / 8))
uint32_t draw_buf[DRAW_BUF_SIZE / 4];

static lv_obj_t * chart;
static lv_coord_t bmewert[MAXREADINGS];
static lv_coord_t bmewert_hum[MAXREADINGS];

void setup_grafik(void) {
    lv_init();
    lv_display_t * disp;
    disp = lv_tft_espi_create(SCREEN_WIDTH, SCREEN_HEIGHT, draw_buf, sizeof(draw_buf));

    for (int i = 0; i < MAXREADINGS; i++) {
        bmewert[i] = 0;
        bmewert_hum[i] = 30;
    }
}

void buildarc(ARC arc) {
    lv_obj_set_size(arc.arc, arc.size, arc.size);
    lv_arc_set_rotation(arc.arc, 180);
    lv_arc_set_bg_angles(arc.arc, 0, 180);
    lv_arc_set_value(arc.arc, arc.value);
    lv_obj_align(arc.arc, LV_ALIGN_LEFT_MID, arc.x, arc.y);
    lv_obj_remove_style(arc.arc, NULL, LV_PART_KNOB);

    // Style this arc
    static lv_style_t style_arc;
    lv_style_init(&style_arc);
    lv_style_set_arc_width(&style_arc, 20);
    lv_style_set_arc_rounded(&style_arc, false);
    lv_obj_add_style(arc.arc, &style_arc, LV_PART_MAIN);
    lv_obj_add_style(arc.arc, &style_arc, LV_PART_INDICATOR);

  lv_obj_t * low_label = lv_label_create(arc.arc);
  char valuelow[10];
  sprintf(valuelow, "%d", arc.lowvalue);
  lv_label_set_text(low_label, valuelow);
  lv_obj_align(low_label, LV_ALIGN_LEFT_MID, 5, 8);
  static lv_style_t style_low_label;
  lv_style_init(&style_low_label);
  lv_style_set_text_font(&style_low_label, &lv_font_montserrat_10);
  lv_obj_add_style(low_label, &style_low_label, 0);

  lv_obj_t * value_label = lv_label_create(arc.arc);
  char value[10];
  sprintf(value, arc.valformat, arc.value);
  // Serial.println(value);
  lv_label_set_text(value_label, value);
  lv_obj_align(value_label, LV_ALIGN_LEFT_MID, 38 + arc.value_offset, 0);
  static lv_style_t style_value_label;
  lv_style_init(&style_value_label);
  lv_style_set_text_font(&style_value_label, &lv_font_montserrat_18);
  lv_obj_add_style(value_label, &style_value_label, 0);

  lv_obj_t * high_label = lv_label_create(arc.arc);
  char valuehigh[10];
  sprintf(valuehigh, "%d", arc.highvalue);
  lv_label_set_text(high_label, valuehigh);
  lv_obj_align(high_label, LV_ALIGN_LEFT_MID, 90, 8);
  static lv_style_t style_high_label;
  lv_style_init(&style_high_label);
  lv_style_set_text_font(&style_high_label, &lv_font_montserrat_10);
  lv_obj_add_style(high_label, &style_high_label, 0);

/*  lv_obj_t * unit_label = lv_label_create(arc.arc);
  lv_label_set_text(unit_label, arc.unit);
  lv_obj_align(unit_label, LV_ALIGN_LEFT_MID, 48, 8);
  static lv_style_t style_unit_label;
  lv_style_init(&style_unit_label);
  lv_style_set_text_font(&style_unit_label, &lv_font_montserrat_12);
  lv_obj_add_style(unit_label, &style_unit_label, 0);
*/
}

void lv_create_main_gui(void) {

  // Create a text label aligned on top: https://docs.lvgl.io/master/widgets/label.html
  time_label = lv_label_create(lv_screen_active());
  lv_label_set_text(time_label, "17:30");
  lv_obj_align(time_label, LV_ALIGN_TOP_MID, 0, 8);

  // Set font type and font size. More information: https://docs.lvgl.io/master/overview/font.html
  static lv_style_t style_time_label;
  lv_style_init(&style_time_label);
  lv_style_set_text_font(&style_time_label, &lv_font_montserrat_28);
  lv_obj_add_style(time_label, &style_time_label, 0);

  // Create a text label aligned on top: https://docs.lvgl.io/master/widgets/label.html
  date_label = lv_label_create(lv_screen_active());
  lv_label_set_text(date_label, "Dienstag, 12. Dezember 2024");
  lv_obj_align(date_label, LV_ALIGN_TOP_MID, 0, 38);

  // Set font type and font size. More information: https://docs.lvgl.io/master/overview/font.html
  static lv_style_t style_date_label;
  lv_style_init(&style_date_label);
  lv_style_set_text_font(&style_date_label, &lv_font_montserrat_12);
  lv_obj_add_style(date_label, &style_date_label, 0);

  /* Refresh-Symbol anzeigen
    lv_obj_t * refresh_label = lv_label_create(lv_screen_active());
    lv_label_set_text(refresh_label, LV_SYMBOL_REFRESH);
    lv_obj_align(refresh_label, LV_ALIGN_CENTER, 0, -45);
  */

  // Text als Überschrift an die Axen
  lv_obj_t * feuchte_label = lv_label_create(lv_screen_active());
  lv_label_set_text(feuchte_label, "Feuchte");
  lv_obj_align(feuchte_label, LV_ALIGN_RIGHT_MID, -3, 20);

  // Set font type and font size. More information: https://docs.lvgl.io/master/overview/font.html
  static lv_style_t style_feuchte_label;
  lv_style_init(&style_feuchte_label);
  lv_style_set_text_font(&style_feuchte_label, &lv_font_montserrat_10);
  lv_obj_add_style(feuchte_label, &style_feuchte_label, 0);

  lv_obj_t * temp_label = lv_label_create(lv_screen_active());
  lv_label_set_text(temp_label, "Temperatur");
  lv_obj_align(temp_label, LV_ALIGN_LEFT_MID, 3, 20);

  // Set font type and font size. More information: https://docs.lvgl.io/master/overview/font.html
  static lv_style_t style_temp_label;
  lv_style_init(&style_temp_label);
  lv_style_set_text_font(&style_temp_label, &lv_font_montserrat_10);
  lv_obj_add_style(temp_label, &style_temp_label, 0);

    /*Create an Arc*/
    lv_obj_t * aTemp = lv_arc_create(lv_screen_active());
    arcTemp.arc = aTemp;
    buildarc(arcTemp);
    lv_obj_t * aHum = lv_arc_create(lv_screen_active());
    arcHum.arc = aHum;
    buildarc(arcHum);

  lv_obj_set_style_bg_color(lv_screen_active(), lv_color_hex(BACKGROUND_COLOR), LV_PART_MAIN);
  

}

void setValuetoArc(ARC arc, float value) {
    int r = arc.highvalue - arc.lowvalue;
    int v = (value - arc.lowvalue) * 100 / r;
    arc.value = v;
    lv_arc_set_value(arc.arc, arc.value);
    lv_obj_t * value_label = lv_obj_get_child(arc.arc, 1);
    char valuestr[10];
    sprintf(valuestr, arc.valformat, value);
    lv_label_set_text(value_label, valuestr);

    if( strcmp(arc.name, "humi") == 0) {
        if (value < arc.green)
        {
            lv_obj_set_style_arc_color(arc.arc, lv_palette_main(LV_PALETTE_GREEN), LV_PART_INDICATOR);
        }
        else if (value < arc.yellow)
        {
            lv_obj_set_style_arc_color(arc.arc, lv_palette_main(LV_PALETTE_YELLOW), LV_PART_INDICATOR);
        }
        else
        {
            lv_obj_set_style_arc_color(arc.arc, lv_palette_main(LV_PALETTE_RED), LV_PART_INDICATOR);
        }
    }               
}
    #define CONTAINER_WIDTH SCREEN_WIDTH
    #define CONTAINER_HEIGHT SCREEN_HEIGHT-145
    #define LEFTAXIS_WIDTH 25
    #define RIGHTAXIS_WIDTH 15
    #define CHART_WIDTH (CONTAINER_WIDTH - LEFTAXIS_WIDTH - RIGHTAXIS_WIDTH - 40)
    #define CHART_HEIGHT (CONTAINER_HEIGHT)

    void drawChart() {
        Serial.println("draw_chart ");

        // Create a container to display the chart and scale
        lv_obj_t * container_row = lv_obj_create(lv_screen_active()); 
        lv_obj_set_size(container_row, CONTAINER_WIDTH, CONTAINER_HEIGHT);  
        lv_obj_align(container_row, LV_ALIGN_BOTTOM_MID, 0, 0);
        // Set the container in a flexbox row layout aligned center 
        lv_obj_set_flex_flow(container_row, LV_FLEX_FLOW_ROW); 
        lv_obj_set_flex_align(container_row, LV_FLEX_ALIGN_CENTER,LV_FLEX_ALIGN_CENTER, LV_FLEX_ALIGN_CENTER); 
        lv_obj_set_scrollbar_mode(container_row, LV_SCROLLBAR_MODE_OFF);
        static lv_style_t style_container_row;
        lv_style_set_pad_row(&style_container_row, 0);
        //lv_style_set_bg_color(&style_container_row, lv_palette_lighten(LV_PALETTE_LIGHT_BLUE, 4));
        lv_obj_add_style(container_row, &style_container_row, 0);
        lv_obj_set_style_border_side(container_row, LV_BORDER_SIDE_BOTTOM, LV_PART_MAIN);
        lv_obj_set_style_bg_color(container_row, lv_color_hex(BACKGROUND_COLOR), LV_PART_MAIN);


        // linke Axe
        lv_obj_t * scaleT = lv_scale_create(container_row);
        lv_obj_set_size(scaleT, 30, 75);
        lv_scale_set_mode(scaleT, LV_SCALE_MODE_VERTICAL_LEFT);

        static const char * scaleT_labels[5] = {"10°C", "15°C", "20°C", "25°C", "30°C"};
        lv_scale_set_text_src(scaleT, scaleT_labels);
        lv_scale_set_label_show(scaleT, true);

        lv_scale_set_total_tick_count(scaleT, 21);
        lv_scale_set_major_tick_every(scaleT, 5);

        lv_obj_set_style_length(scaleT, 0, LV_PART_ITEMS);
        lv_obj_set_style_length(scaleT, 0, LV_PART_INDICATOR);
        lv_obj_set_style_line_width(scaleT, 0, LV_PART_ITEMS);
        lv_obj_set_style_line_width(scaleT, 0, LV_PART_INDICATOR);
        lv_obj_set_style_line_width(scaleT, 0, LV_PART_MAIN);
        lv_scale_set_range(scaleT, 10, 30);

        static lv_style_t style_scaleT;
        lv_style_init(&style_scaleT);
        lv_style_set_text_font(&style_scaleT, &lv_font_montserrat_10);
        lv_style_set_text_color(&style_scaleT, lv_color_hex(0x0000FF));
//        lv_style_set_bg_color(&style_scaleT, lv_color_hex(0xFF00FF));
        lv_obj_add_style(scaleT, &style_scaleT, 0);


        // Create a chart 

        chart = lv_chart_create(container_row);
        lv_obj_set_size(chart, CHART_WIDTH, CHART_HEIGHT);
        lv_chart_set_type(chart, LV_CHART_TYPE_LINE);   /*Show lines and points too*/
        lv_chart_set_point_count(chart, MAXREADINGS);
        lv_chart_set_div_line_count(chart, 5, 5);
        lv_chart_set_range(chart, LV_CHART_AXIS_SECONDARY_Y, 40, 100);
        lv_chart_set_range(chart, LV_CHART_AXIS_PRIMARY_Y, 10, 30);
        lv_obj_set_style_size(chart, 0, 0, LV_PART_INDICATOR);  // No points on line
        lv_obj_set_scrollbar_mode(chart, LV_SCROLLBAR_MODE_OFF);
        lv_obj_set_style_border_width(chart, 0, LV_PART_MAIN);  // No border
        lv_obj_set_style_bg_color(chart, lv_color_hex(BACKGROUND_COLOR), LV_PART_MAIN);

        // lv_obj_set_style_pad_right(chart, -10, LV_PART_MAIN);  // No border
        /*Add data series*/
        lv_chart_series_t * ser1 = lv_chart_add_series(chart, lv_palette_main(LV_PALETTE_BLUE), LV_CHART_AXIS_PRIMARY_Y);
        lv_chart_set_ext_y_array(chart, ser1, (lv_coord_t *)bmewert);

        lv_chart_series_t * ser2 = lv_chart_add_series(chart, lv_palette_main(LV_PALETTE_RED), LV_CHART_AXIS_SECONDARY_Y);
        lv_chart_set_ext_y_array(chart, ser2, (lv_coord_t *)bmewert_hum);

        lv_chart_refresh(chart); /*Required after direct set*/

// rechte Axe
        lv_obj_t * scale = lv_scale_create(container_row);
        lv_obj_set_size(scale, 30, 75);
        lv_scale_set_mode(scale, LV_SCALE_MODE_VERTICAL_RIGHT);

        static const char * scale_labels[5] = {"40%", "55%", "70%", "85%", "100%"};
        lv_scale_set_text_src(scale, scale_labels);
        lv_scale_set_label_show(scale, true);

        lv_scale_set_total_tick_count(scale, 21);
        lv_scale_set_major_tick_every(scale, 5);

        lv_obj_set_style_length(scale, 0, LV_PART_ITEMS);
        lv_obj_set_style_length(scale, 0, LV_PART_INDICATOR);
        lv_obj_set_style_line_width(scale, 0, LV_PART_ITEMS);
        lv_obj_set_style_line_width(scale, 1, LV_PART_INDICATOR);
        lv_obj_set_style_line_width(scale, 0, LV_PART_MAIN);
        lv_obj_set_style_bg_color(scale, lv_color_hex(BACKGROUND_COLOR), LV_PART_MAIN);
        lv_scale_set_range(scale, 40, 100);

        static lv_style_t style_scale;
        lv_style_init(&style_scale);
        lv_style_set_text_font(&style_scale, &lv_font_montserrat_10);
        lv_style_set_text_color(&style_scale, lv_color_hex(0xFF0000));
        lv_obj_add_style(scale, &style_scale, 0);

 /*   // Label an der Axe
    lv_obj_t * unitxAx_label = lv_label_create(container_row);
    lv_label_set_text(unitxAx_label, "°C");
    lv_obj_align(unitxAx_label, LV_ALIGN_TOP_RIGHT, -20, 8);
    static lv_style_t style_unitxAx_label;
    lv_style_init(&style_unitxAx_label);
    lv_style_set_text_font(&style_unitxAx_label, &lv_font_montserrat_12);
    lv_obj_add_style(unitxAx_label, &style_unitxAx_label, 0);
*/
/* ganz rechts unten die Version anzeigen */
  lv_obj_t * version_label = lv_label_create(chart);
  char ver[20];
  sprintf(ver, "V %s %s", VERSION, VDATE);
  lv_label_set_text(version_label, ver);
  lv_obj_align(version_label, LV_ALIGN_BOTTOM_RIGHT, 0, 9);

  // Set font type and font size. More information: https://docs.lvgl.io/master/overview/font.html
  static lv_style_t style_version_label;
  lv_style_init(&style_version_label);
  lv_style_set_text_font(&style_version_label, &lv_font_montserrat_8);
  lv_style_set_text_color(&style_version_label, lv_palette_main(LV_PALETTE_GREY));
  lv_obj_add_style(version_label, &style_version_label, LV_PART_MAIN);

}

void updatechartData(float value, float humvalue) {
    int i = 0;
    for (i = 0; i < MAXREADINGS - 1; i++) {
        bmewert[i] = bmewert[i + 1];
        bmewert_hum[i] = bmewert_hum[i + 1];    
    }
    bmewert[MAXREADINGS - 1] = value;
    bmewert_hum[MAXREADINGS - 1] = humvalue;

    lv_chart_refresh(chart);
}