/*
  Simple "Hello World" for ILI9341 LCD

  https://wokwi.com/arduino/projects/308024602434470466
*/

#include "SPI.h"
#include "Adafruit_GFX.h"
#include "Adafruit_ILI9341.h"
#include <OneWire.h>
#include <DallasTemperature.h>

#define TFT_DC 9
#define TFT_CS 10
#define ONE_WIRE_BUS 7
#define PI 3.14159265358979323846

OneWire oneWire(ONE_WIRE_BUS);
DallasTemperature sensors(&oneWire);
Adafruit_ILI9341 tft = Adafruit_ILI9341(TFT_CS, TFT_DC);

#define JOY_HORIZ A0
#define JOY_VERT A1
#define JOY_SEL 2

#define JOY_CENTER   512
#define JOY_DEADZONE 64

int menuSelection = 1;
int menuSize = 4;
int menu = 0;

int tempValue[5] = {0,0,0,0,0};

void setup() {
  tft.begin();
  pinMode(JOY_SEL, INPUT);
  sensors.begin();
  printmenu();
}

int joyXbool=0,joyYbool=0,joySelbool=0;
int joyXcurr,joyYcurr,joySelcurr;
int joyXprev,joyYprev,joySelprev;
void loop() {
  if (menu == 1){
    sensors.requestTemperatures();
    float temperature = sensors.getTempCByIndex(0);
    int mapped = map(temperature, 00,50,0,60);

    tft.setCursor(0,0);
    tft.setTextSize(1);
    tft.setTextColor(ILI9341_WHITE);
    tft.print("Temperature ");
    tft.print(temperature);
    tft.print("C");
    tft.setCursor(0,25);
    tft.print("C");
    tft.setCursor(8,67); 
    tft.print("10");
    tft.setCursor(8,10); 
    tft.print("50");
    tft.setCursor(20,74);
    tft.print("-5s");
    tft.setCursor(110,74);
    tft.print("0s");

    shiftArrayLeft(tempValue,5,mapped);
    // Draw the graph
    tft.fillScreen(ILI9341_BLACK);

    tft.drawLine(20,10,20,70, ILI9341_WHITE);
    tft.drawLine(20,70,120,70, ILI9341_WHITE);

    for(int i=1;i<5;i++){
      tft.drawLine(20+((i-1)*25),69-tempValue[i-1],20+(i*25),69-tempValue[i],ILI9341_RED);
    }

    int mapped100 = map(temperature, 00,50,0,100);
    float data[2] = {mapped100,100-mapped100};

    uint16_t colors[2] = {ILI9341_RED, ILI9341_GREEN};
    int x = 35;
    int y = 105;
    int radius = 20;
    float angle = 0.0;
    for (int i = 0; i < 2; i++) {
      float startAngle = angle;
      float endAngle = angle + data[i] / 100.0 * 360.0;
      fillArc(x, y, radius, startAngle, endAngle, colors[i]);
      angle = endAngle;
    }
    tft.setTextColor(ILI9341_BLACK);
    tft.setCursor(25,100);
    tft.print(mapped100);
    tft.print("%");
    tft.setTextColor(ILI9341_WHITE);
    tft.setCursor(10,135);
    tft.print("Humidity");

    float data2[2] = {mapped100,100-mapped100};

    uint16_t colors2[2] = {ILI9341_WHITE, ILI9341_YELLOW};
    int x2 = 90;
    int y2 = 105;
    int radius2 = 20;
    float angle2 = 0.0;
    for (int i = 0; i < 2; i++) {
      float startAngle = angle2;
      float endAngle = angle2 + data2[i] / 100.0 * 360.0;
      fillArc(x2, y2, radius2, startAngle, endAngle, colors2[i]);
      angle2 = endAngle;
    }
    tft.setTextColor(ILI9341_BLACK);
    tft.setCursor(80,100);
    tft.print(mapped100);
    tft.print("%");
    tft.setTextColor(ILI9341_WHITE);
    tft.setCursor(75,135);
    tft.print("Light");

    delay(1000);
  }
  if (menu == 0){
    int joyX = analogRead(JOY_HORIZ);
    int joyY = analogRead(JOY_VERT);
    int joyButton = digitalRead(JOY_SEL);
    int joySelcurr = joyButton;
    if (joySelcurr == 1 && joySelcurr!=joySelprev){
      menu++;
    }

    if (joyX < JOY_CENTER - JOY_DEADZONE) {
      joyXcurr = -1;
    }else if (joyX > JOY_CENTER + JOY_DEADZONE) {
      joyXcurr = 1;
    }else{
      joyXcurr = 0;
    }
    if (joyXcurr==-1 && joyXcurr!=joyXprev){
      if (menuSelection > 1) {
        menuSelection--;
        printmenu();
      }
    }
    if (joyXcurr==1 && joyXcurr!=joyXprev){
      if (menuSelection < menuSize) {
        menuSelection++;
        printmenu();
      }
    }
    joyXprev = joyXcurr;
    joySelprev = joySelcurr;
  }

}
void printmenu(){
  tft.fillScreen(ILI9341_BLACK);
  tft.setTextSize(3);
  tft.setTextColor(ILI9341_WHITE);
  tft.setCursor(00,0);
  tft.print("Plant Sensor");
  for (int i=1;i<=menuSize;i++){
    tft.setTextSize(2);
    tft.setCursor(0,(i*25)+10);
    if (menuSelection == i){
      menuData(i);
      tft.print(" <");
    }else{
      menuData(i);
    }
  }
}
void menuData(int i){
  if (i == 1){
    tft.print("Check Plant");
  }else if (i == 2){
    tft.print("Water the Plant");
  }else if (i == 3){
    tft.print("Go to Deep Sleep");
  }else if (i == 4){
    tft.print("Select new WIFI");
  }
}
void shiftArrayLeft(int arr[], int len, int newValue) {
  for (int i = 0; i < len - 1; i++) {
    arr[i] = arr[i + 1];
  }
  arr[len - 1] = newValue;
}


void fillArc(int16_t x0, int16_t y0, int16_t r, float startAngle, float endAngle, uint16_t color) {
  // Convert angles from degrees to radians
  float startRad = startAngle / 180.0 * PI;
  float endRad = endAngle / 180.0 * PI;

  // Draw the arc as a series of triangles
  for (float angle = startRad; angle <= endRad; angle += 0.01) {
    int16_t x1 = x0 + r * cos(angle);
    int16_t y1 = y0 + r * sin(angle);
    int16_t x2 = x0 + r * cos(angle + 0.01);
    int16_t y2 = y0 + r * sin(angle + 0.01);
    tft.fillTriangle(x0, y0, x1, y1, x2, y2, color);
  }
}