#include "definition.h"
#include "layout.h"

Layout layout;
int longPressDelay = 350;                   //customizable encoderValues
int spamSpeed = 15;
int rowval=2;
int colval=4;
char KEY_SPACE = ' ';
byte inputs[] = {3, 4, 5, 6};          //declaring inputs and outputs
const int inCount = sizeof(inputs)/sizeof(inputs[0]);
byte outputs[] = {12,13};
const int outCount = sizeof(outputs)/sizeof(outputs[0]);

int keyDown[2][4];
bool keyLong[2][4];
int PCursor;

void setup() {
  layout = layout1;
  PCursor = 0;
  // put your setup code here, to run once:
  Serial.begin(115200);
  Serial.println("Hello, ESP32-S2!");
  uint16_t time = millis();

  for(int i=0; i<outCount; i++){    //declaring all the outputs and setting them high
    pinMode(outputs[i],OUTPUT);
    digitalWrite(outputs[i],HIGH);
  }
  for(int i=0; i<inCount; i++){     //declaring all the inputs and activating the internal pullup resistor
    pinMode(inputs[i],INPUT_PULLUP);
    }
/*for (int i = 0; i < ROWS; i++) {
    pinMode(rowPins[i], INPUT_PULLDOWN);
  }
  for (int i = 0; i < COLS; i++) {
    pinMode(colPins[i], OUTPUT);
    digitalWrite(colPins[i], LOW);
  }*/
  time = millis() - time;
}

void loop() {
//digitalWrite(LED_BUILTIN, HIGH);
  //delay(1000);                       // wait for a second
  //digitalWrite(LED_BUILTIN, LOW);    // turn the LED off by making the voltage LOW
  //delay(1000);  

  for (int i=0; i<rowval; i++)
  {    
    digitalWrite(outputs[i],LOW);   //setting one row low
    delayMicroseconds(5);           //giving electronics time to settle down
    
    for(int j=0; j<colval; j++)
    {
      if(digitalRead(inputs[j]) == LOW)
      {
        keyPressed(i,j);            //calling keyPressed function if one of the inputs reads low
      }
      else if(keyDown[i][j] != 0)   //resetting the key if it is not pressed any more
      {  
        resetKey(i,j);
      }
    }
    
    digitalWrite(outputs[i],HIGH);
    delayMicroseconds(500);         //setting the row high and waiting 0.5ms until next cycle
  }
}


//if a key is pressed, this Funtion is called and outputs to serial the key location, it also sends the keystroke if not already done so
void keyPressed(int row, int col){
  /*Serial.print("Output: "); 
  Serial.print(row);
  Serial.print(" Input: ");
  Serial.print(col);
  Serial.print(" ");
  Serial.println(customKey[row][col]);*/
  PCursor = PCursor + 1;
  
  if(keyDown[row][col]==0){  
    Serial.println(customKey[row][col]);       //if the function is called for the first time for this key
    Serial.println("  First   ");
    delay(10);
  }
  else if(keyLong[row][col] && keyDown[row][col] > spamSpeed){ //if the key has been held long enough to warrant another keystroke set
    //Serial.println("  Holded   ");
    keyDown[row][col] = 1;
  }
  else if(keyDown[row][col] > longPressDelay){ //if the key has been held for longer that longPressDelay, it switches into spam mode
    keyLong[row][col] = true;
  }

  keyDown[row][col]++;
}

void resetKey(int row, int col){ //resetting the variables after key is released
  keyDown[row][col] = 0;
  keyLong[row][col] = false;
}