/**
   ESP32 + DHT22 Example for Wokwi
   
   https://wokwi.com/arduino/projects/322410731508073042
*/

#include "esp32_inc_file.h"
#include <SPI.h>
#include <Wire.h>
// OLED
#include "Adafruit_GFX.h"
#include "Adafruit_SSD1306.h"
Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);

//Rotary Encoder
#include "RotaryEncoder.h"
#define PIN_IN1 ROT_CLK_PIN
#define PIN_IN2 ROT_DIR_PIN
RotaryEncoder *encoder = nullptr;



// MENUS
struct legVar{
  String legend;
  float variable;
};

struct legString{
  String legend;
  String variable;
};

struct legVarUni{
  String legend;
  float var;
  String unity;
};

struct legVarEdit{
  String legend;
  float variable;
};

struct legStringEdit{
  String legend;
  String variable;
};

struct legVarUniEdit{
  String legend;
  float var;
  String unity;
};

struct headerLine{
  String txt;
  String txt1;
  const unsigned char *icon1 = blank_16;
  const unsigned char *icon2 = blank_16;
  const unsigned char *icon3 = blank_16;
};

struct footerLine{
  String txt;
  const unsigned char *icon1 = blank_8;
  const unsigned char *icon2 = blank_8;
  const unsigned char *icon3 = blank_8;
};

struct body3Lines{
  String txt1;
  String txt2;
  String txt3;
};

struct body4Lines{
  String txt1;
  String txt2;
  String txt3;
  String txt4;
};

struct menu3Lines{
  headerLine header;
  body3Lines body;
  footerLine footer;
};

struct menu4Lines{
  headerLine header;
  body4Lines body;
  footerLine footer;
};


const long SEND_OLED_DataTime   = TIME_SEND_OLED;
unsigned long SEND_OLED_Data    = 0;
const long TIMER_1S             = 1000;
unsigned long TIMER_1S_Time     = 0;
bool timer_1S_Stat              = false;
unsigned long ROT_SW_TIME       = 0;
unsigned long keyPressFilter    = 0;

int32_t aux_int = 0;
int aux_cont = 0;

menu3Lines mainMenu;
menu4Lines sensorEncoder;

IRAM_ATTR void checkPosition()
{
  encoder->tick(); // just call tick() to check the state.
}

IRAM_ATTR void centerKeyUp(){
  aux_int = millis() - keyPressFilter;
  if( aux_int > TIME_KEY_FILTER){
    aux_cont++;
  }
  keyPressFilter = millis();
  if(aux_cont > 10) aux_cont=0;
}

void sendToDisplay(menu4Lines _content){
  display.clearDisplay();
  display.setTextColor(WHITE);
  display.setTextSize(2);
  display.setCursor(0,0);
  display.println(_content.header.txt);
  display.setTextSize(1);
  display.setCursor(0,16);
  display.println(_content.body.txt1);
  display.println(_content.body.txt2);
  display.println(_content.body.txt3);
  display.println(_content.body.txt4);
  display.setTextSize(1);
  display.setCursor(0,56);
  display.println(_content.footer.txt);
  //display.drawBitmap(0,0, _head.icon1,128,64,WHITE);
  //display.setCursor(0,0);
  

  display.display();

}

void sendToDisplay(menu3Lines _content){
  display.clearDisplay();
  display.setTextColor(WHITE);
  display.setTextSize(2);
  display.setCursor(0,0);
  display.println(_content.header.txt);
  display.drawBitmap(112, 0, _content.header.icon1, 16, 16, WHITE );
  display.drawBitmap(96,  0, _content.header.icon2, 16, 16, WHITE );
  display.drawBitmap(80,  0, _content.header.icon3, 16, 16, WHITE ); 
 
  display.setTextSize(1);
  display.setCursor(0,24);
  display.println(_content.body.txt1);
  display.println(_content.body.txt2);
  display.println(_content.body.txt3);
  display.setTextSize(1);
  display.setCursor(0,56);
  if (timer_1S_Stat) display.println(_content.footer.txt);
  display.drawBitmap(112, 56, _content.footer.icon1, 16, 8, WHITE);
  display.drawBitmap(96,  56, _content.footer.icon2, 16, 8, WHITE);
  display.drawBitmap(80,  56, _content.footer.icon3, 16, 8, WHITE);
  //display.drawBitmap(0,0, _head.icon1,128,64,WHITE);
  //display.setCursor(0,0);
  

  display.display();

}



void setup() {
  Serial.begin(115200);
  Wire.begin(SDA_PIN, SCL_PIN, 400000L);   // sda /scl
  pinMode(ROT_SW_PIN, INPUT_PULLUP);  
  encoder = new RotaryEncoder(PIN_IN1, PIN_IN2, RotaryEncoder::LatchMode::TWO03);
  attachInterrupt(digitalPinToInterrupt(ROT_SW_PIN) , centerKeyUp, RISING); 
  attachInterrupt(digitalPinToInterrupt(ROT_CLK_PIN), checkPosition, CHANGE);
  attachInterrupt(digitalPinToInterrupt(ROT_DIR_PIN), checkPosition, CHANGE);

  mainMenu.header.txt = "000";
  mainMenu.header.icon1 = wifi_max;
  mainMenu.header.icon2 = wifi_min;
  //mainMenu.header.icon3 = wifi_null;

  mainMenu.body.txt1 = "txt 1";
  mainMenu.body.txt2 = "txt 2";
  mainMenu.body.txt3 = "txt 3";
  mainMenu.footer.txt = "Main Menu";
 delay(100);
  if(!display.begin(SSD1306_SWITCHCAPVCC, SCREEN_ADDRESS, false, false)) {
    Serial.println(F("SSD1306 allocation failed"));
    delay(1000);
  }else{
   Serial.println(F("SSD1306 OK"));
   sendToDisplay(mainMenu);
  }

}

void loop() {

  Serial.println("---");
  delay(1000);
  
  if (millis() - SEND_OLED_Data >= SEND_OLED_DataTime) {
    SEND_OLED_Data = millis();

    sensorEncoder.header.txt = "1";
    sensorEncoder.body.txt1 = "POS: " +  (String)(int)encoder->getPosition();
    sensorEncoder.body.txt2 = "DIR: " +  (String)(int)encoder->getDirection();
    sensorEncoder.body.txt3 = "Cont: "+  (String)aux_cont;
    sensorEncoder.body.txt4 = "RPM: " +  (String)(int)encoder->getRPM();
    sensorEncoder.footer.txt = "Encoder";


    if(aux_cont % 2  == 0 ) sendToDisplay(sensorEncoder);
    else sendToDisplay(sensorEncoder);

  }


}