#include "Free_Fonts.h" 
#include <TFT_eSPI.h>
#include <SPI.h>       // this is needed for display

// The display also uses hardware SPI, plus #9 & #10
#define TFT_CS 15
#define TFT_DC 2
#define TFT_MOSI 23
#define TFT_SCLK 18

#define LTBLUE    0xB6DF
#define LTTEAL    0xBF5F
#define LTGREEN         0xBFF7
#define LTCYAN    0xC7FF
#define LTRED           0xFD34
#define LTMAGENTA       0xFD5F
#define LTYELLOW        0xFFF8
#define LTORANGE        0xFE73
#define LTPINK          0xFDDF
#define LTPURPLE  0xCCFF
#define LTGREY          0xE71C

#define BLUE            0x001F
#define TEAL    0x0438
#define GREEN           0x07E0
#define CYAN          0x07FF
#define RED           0xF800
#define MAGENTA       0xF81F
#define YELLOW        0xFFE0
#define ORANGE        0xFD20
#define PINK          0xF81F
#define PURPLE    0x801F
#define GREY        0xC618
#define WHITE         0xFFFF
#define BLACK         0x0000

#define DKBLUE        0x000D
#define DKTEAL    0x020C
#define DKGREEN       0x03E0
#define DKCYAN        0x03EF
#define DKRED         0x6000
#define DKMAGENTA       0x8008
#define DKYELLOW        0x8400
#define DKORANGE        0x8200
#define DKPINK          0x9009
#define DKPURPLE      0x4010
#define DKGREY        0x4A49

float dispTemp = 22.3;
int value[6] = { 0, 0, 0, 0, 0, 0 };
int old_value[6] = { -1, -1, -1, -1, -1, -1 };
int d = 0;

TFT_eSPI tft = TFT_eSPI(); // Invoke custom library with default width and height

void plotLinear(char *label1, char *label2, int x, int y) {
  int w = 36;
  tft.drawRect(x, y, w, 155, TFT_WHITE);
  //tft.fillRect(x + 2, y + 19, w - 3, 155 - 38, TFT_WHITE);
  tft.fillRect(x + 2, y + 19, w - 3, 155 - 38, TFT_BLACK);
  tft.setTextColor(TFT_CYAN, TFT_BLACK);
  tft.drawCentreString(label1, x + w / 2, y + 2, 2);
  tft.drawCentreString(label2, x + w / 2, y + 22, 2);

  for (int i = 0; i < 110; i += 10) {
    tft.drawFastHLine(x + 20, y + 27 + i, 6, TFT_BLACK);
  }

  for (int i = 0; i < 110; i += 50) {
    tft.drawFastHLine(x + 20, y + 27 + i, 9, TFT_BLACK);
  }
  /*
  tft.fillTriangle(x + 3, y + 127, x + 3 + 16, y + 127, x + 3, y + 127 - 5, TFT_RED);
  tft.fillTriangle(x + 3, y + 127, x + 3 + 16, y + 127, x + 3, y + 127 + 5, TFT_RED);

  tft.drawCentreString("---", x + w / 2, y + 155 - 18, 2);
  */
}

void plotPointer(void) {
  int dy, dyy = 147;
  byte pw = 16;

  tft.setTextColor(TFT_GREEN, TFT_BLACK);

  // Move the 6 pointers one pixel towards new value
  for (int i = 1; i < 6; i++) {
    char buf[8];
    dtostrf(value[i], 4, 0, buf);
    tft.drawRightString(buf, i * 45 + 36 - 5, dyy - 27 + 155 - 18, 2);

    int dx = 10 + 45 * i;
    if (value[i] < 0) value[i] = 0;  // Limit value to emulate needle end stops
    if (value[i] > 100) value[i] = 100;

    while (!(value[i] == old_value[i])) {
      dy = dyy + 100 - old_value[i];
      if (old_value[i] > value[i]) {
        tft.fillRect(dx, dyy, pw, 100-old_value[i], TFT_BLACK);
        tft.fillRect(dx, dy, pw, 1, TFT_YELLOW);
        old_value[i]--;
        delay(100);
      } else {
        tft.fillRect(dx, dyy, pw, 100-old_value[i], TFT_BLACK);
        tft.fillRect(dx, dy, pw, 1 , TFT_YELLOW);
        old_value[i]++;
        delay(100);
      }
    }
  }
}

void setup(void) {
  tft.begin();
  tft.setRotation(0);
  byte d = 45;
  //plotLinear("FM", 0, 160);
  plotLinear("2G", "900", 1 * d, 100);
  plotLinear("3G", "1800", 2 * d, 100);
  plotLinear("3G", "2100", 3 * d, 100);
  plotLinear("4G", "2600", 4 * d, 100);
  plotLinear("WiFi", "/BT", 5 * d, 100);
  /*
  themeClockTFT(dispTemp, "TEMP", "`C", "88.8", "temp", 1);
  tft.fillRect(0,0,320,16,TFT_BLUE);
  tft.setTextColor (TFT_YELLOW, TFT_BLUE);
  tft.drawString("15-12-2023 23:00", 0, 0, FONT2);
  tft.drawRect(220,2,16,10,TFT_YELLOW);
  tft.fillRect(235,4,3,5,TFT_YELLOW);
  tft.fillRect(220,2,4,10,TFT_YELLOW);
  tft.fillTriangle(220,150,220,170,235,160,TFT_YELLOW);
  tft.fillTriangle(20,150,20,170,5,160,TFT_YELLOW);
  */
}

void loop() {
  tft.fillRect(220,2,4,10,TFT_YELLOW);
  tft.fillRect(224,3,12,8,TFT_BLACK);
  delay(100);
  tft.fillRect(220,2,8,10,TFT_YELLOW);
  tft.fillRect(228,3,8,8,TFT_BLACK);
  delay(100);
  tft.fillRect(220,2,12,10,TFT_YELLOW);
  tft.fillRect(232,3,4,8,TFT_BLACK);
  delay(100);
  tft.fillRect(220,2,16,10,TFT_YELLOW);
  //tft.fillRect(224,2,12,10,TFT_BLUE);
  delay(100);
  d += 4;
  if (d >= 360) d = 0;
  value[0] = 50 + 50 * sin((d + 0) * 0.0174532925);
  value[1] = 50 + 50 * sin((d + 60) * 0.0174532925);
  value[2] = 50 + 50 * sin((d + 120) * 0.0174532925);
  value[3] = 50 + 50 * sin((d + 180) * 0.0174532925);
  value[4] = 50 + 50 * sin((d + 240) * 0.0174532925);
  value[5] = 50 + 50 * sin((d + 300) * 0.0174532925);
  plotPointer();
}


void themeClockTFT(float value, const String& lable, const String& units, const String& valueSample, const String& valueType, unsigned int accuracy) {

  int xpos = 10;
  int ypos = 45;
  int yPad = 0;
  int padding = tft.textWidth(String(value, accuracy), FONT8);

  tft.setTextDatum(TL_DATUM);
  tft.drawString(lable, xpos, ypos, FONT4);

  tft.setTextDatum(TR_DATUM);
  tft.drawString(units, 240 - xpos, ypos, FONT4);

  tft.setTextDatum(TL_DATUM);

  tft.setTextPadding(padding);

  ypos += tft.fontHeight(FONT8) / 2 + yPad;
  tft.drawFloat(value, accuracy, (240 - padding) / 2, ypos, FONT8);

  tft.setTextPadding(0);

}