/*********
  Rui Santos
  Complete project details at https://RandomNerdTutorials.com/esp32-relay-module-ac-web-server/
  
  The above copyright notice and this permission notice shall be included in all
  copies or substantial portions of the Software.
*********/

// Import required libraries
#include "Shifty.h"
#include <Keypad.h>
#include <HTTPClient.h>
#include <WiFiClientSecure.h>

#define CORE_1 1

// Set to true to define Relay as Normally Open (NO)
#define RELAY_NO    true

// Set number of relays
#define NUM_RELAYS  8


#define DataPin 27
#define ClockPin 32
#define LatchPin 33

#define DELAY 150

Shifty myreg;

const uint8_t ROWS = 4;
const uint8_t COLS = 4;
char keys[ROWS][COLS] = {
  { '1', '2', '3', 'A' },
  { '4', '5', '6', 'B' },
  { '7', '8', '9', 'C' },
  { '*', '0', '#', 'D' }
};

uint8_t colPins[COLS] = { 21, 19, 18, 17 }; // Pins connected to C1, C2, C3, C4
uint8_t rowPins[ROWS] = { 26, 25, 23, 22 }; // Pins connected to R1, R2, R3, R4

Keypad keypad = Keypad(makeKeymap(keys), rowPins, colPins, ROWS, COLS);



void setup(){
  // Serial port for debugging purposes
  Serial.begin(115200);

  
  myreg.setBitCount(NUM_RELAYS);
  myreg.setPins(DataPin, ClockPin, LatchPin);

  // Set all relays to off when the program starts - if set to Normally Open (NO), the relay is off when you set the relay to HIGH
  myreg.batchWriteBegin();

  for(int i=0; i<NUM_RELAYS; i++){
    // pinMode(relayGPIOs[i-1], OUTPUT);
    if(RELAY_NO){
      // digitalWrite(relayGPIOs[i-1], HIGH);
      Serial.println("open Pin " + String(i) + " to High");
      myreg.writeBit(i, HIGH);
    }
    else{
      // digitalWrite(relayGPIOs[i-1], LOW);
      myreg.writeBit(i, LOW);
    }
  }
  myreg.batchWriteEnd();
  
  xTaskCreatePinnedToCore(keyboardTask, "Keyboard Reading", 2048, (void*)&keypad, 0, NULL, CORE_1);

  readKeyboxConfig();

}
  
void loop() {

  myreg.writeBit(0, LOW);
  myreg.writeBit(1, LOW);
  myreg.writeBit(2, LOW);
  delay(DELAY);

  myreg.writeBit(0, HIGH);
  delay(DELAY);

  myreg.writeBit(0, LOW);
  myreg.writeBit(1, HIGH);
  delay(DELAY);

  myreg.writeBit(1, LOW);
  myreg.writeBit(2, HIGH);
  delay(DELAY);
}

void readKeyboxConfig(){

WiFiClientSecure *client;
client->setInsecure();
  HTTPClient httpClient;
  httpClient.begin(*client, "https://hghelbig.com/keybox.json");
  int httpCode = httpClient.GET();

  if(httpCode > 0){
    Serial.printf("[HTTP] GET... code: %d\n", httpCode);
    if(httpCode == HTTP_CODE_OK){
      Serial.println(httpClient.getString());
    }
  } else {
            Serial.printf("[HTTP] GET... failed, error: %s\n", httpClient.errorToString(httpCode).c_str());
        }

  httpClient.end();

}

void keyboardTask(void * pvParameters) {

  Keypad& keypad = *((Keypad*)pvParameters);

  Serial.println("keyboardTask started");

  
  String enteredCode = "";


  while(true){
    char key = keypad.getKey();
    while(key != NO_KEY){

        Serial.println(key);

        if(key == '#'){
          Serial.println("code: " + enteredCode);
          enteredCode = "";
        } else {
          enteredCode += key;
        }
        key = NO_KEY;
      }
  }

  

  
}