// blynk code 

#define BLYNK_TEMPLATE_ID "TMPL3LfQEa7Wh"
#define BLYNK_TEMPLATE_NAME "home automation"
#define BLYNK_AUTH_TOKEN "Aotyiq82Ix0jxVt_lgAB7Yr4rb6a_k1K"

char auth[] = BLYNK_AUTH_TOKEN;

// ESP32 Google Assistant + Alexa + Manual HomeAutomation with Sinric Pro

#define BLYNK_PRINT Serial
#include <WiFiClient.h>
#include <BlynkSimpleEsp32.h>
#include <Arduino.h>                          //ArduinoJson Library: https://github.com/bblanchon/ArduinoJson
#include <WiFi.h>
#include "SinricPro.h"                        //SinricPro Library: https://sinricpro.github.io/esp8266-esp32-sdk/
#include "SinricProSwitch.h"
#include <map>

BlynkTimer timer;

// Uncomment the following line to enable serial debug output
//#define ENABLE_DEBUG

#ifdef ENABLE_DEBUG
       #define DEBUG_ESP_PORT Serial
       #define NODEBUG_WEBSOCKETS             //arduinoWebSockets Library: https://github.com/Links2004/arduinoWebSockets
       #define NDEBUG
#endif 

#define WIFI_SSID         "Wokwi-GUEST"      //Enter WiFi Name
#define WIFI_PASS         ""                //Enter WiFi Password
#define APP_KEY           "6fbfa75c-6643-44f6-a1ee-e70971626509"                  //Enter APP-KEY 
#define APP_SECRET        "db8982bb-3e6d-4655-b83d-ee5008b979c9-26f3a03e-b5dc-4167-aed4-6852dd4aa620"     //Enter APP-SECRET

//Enter the device IDs here
#define device_ID_1   "65dc3c7938f6f4a3cdb53097"  //SWITCH 1 ID
#define device_ID_2   "65f94b1760d81635d1caf65d"  //SWITCH 2 ID
#define device_ID_3   "65f94bf438f6f4a3cdc523e8"  //SWITCH 3 ID


// define the GPIO connected with Relays and switches
#define RelayPin1 13  //D15
#define RelayPin2 12  //D2
#define RelayPin3 14  //D4
#define RelayPin4 27 

#define SwitchPin1 26  //D23
#define SwitchPin2 25  //D22
#define SwitchPin3 33  //D21
#define SwitchPin4 32

int relay1_state = 0;
int relay2_state = 0;
int relay3_state = 0;
int relay4_state = 0;

#define button1_vpin    V0
#define button2_vpin    V1
#define button3_vpin    V2 
#define button4_vpin    V3

BLYNK_CONNECTED() {
  Blynk.syncVirtual(button1_vpin);
  Blynk.syncVirtual(button2_vpin);
  Blynk.syncVirtual(button3_vpin);
  Blynk.syncVirtual(button4_vpin);
}

BLYNK_WRITE(button1_vpin) {
  relay1_state = param.asInt();
  digitalWrite(RelayPin1, relay1_state);
}
//--------------------------------------------------------------------------
BLYNK_WRITE(button2_vpin) {
  relay2_state = param.asInt();
  digitalWrite(RelayPin2, relay2_state);
}
//--------------------------------------------------------------------------
BLYNK_WRITE(button3_vpin) {
  relay3_state = param.asInt();
  digitalWrite(RelayPin3, relay3_state);
}
//--------------------------------------------------------------------------
BLYNK_WRITE(button4_vpin) {
  relay4_state = param.asInt();
  digitalWrite(RelayPin4, relay4_state);
}



//uncomment the following line if you use Push Buttons to toggle Relays
//#define TACTILE_BUTTON 1

#define BAUD_RATE   9600

#define DEBOUNCE_TIME 250

typedef struct {      // struct for the std::map below
  int relayPIN;
  int flipSwitchPIN;
} deviceConfig_t;


std::map<String, deviceConfig_t> devices = {
    //{deviceId, {relayPIN,  flipSwitchPIN}}
    {device_ID_1, {  RelayPin1, SwitchPin1 }},
    {device_ID_2, {  RelayPin2, SwitchPin2 }},
    {device_ID_3, {  RelayPin3, SwitchPin3 }},
         
};

typedef struct {      // struct for the std::map below
  String deviceId;
  bool lastFlipSwitchState;
  unsigned long lastFlipSwitchChange;
} flipSwitchConfig_t;

std::map<int, flipSwitchConfig_t> flipSwitches;    // this map is used to map flipSwitch PINs to deviceId and handling debounce and last flipSwitch state checks
                                                  // it will be setup in "setupFlipSwitches" function, using informations from devices map

void setupRelays() { 
  for (auto &device : devices) {           // for each device (relay, flipSwitch combination)
    int relayPIN = device.second.relayPIN; // get the relay pin
    pinMode(relayPIN, OUTPUT);             // set relay pin to OUTPUT
    digitalWrite(relayPIN, HIGH);
  }
}

void setupFlipSwitches() {
  for (auto &device : devices)  {                     // for each device (relay / flipSwitch combination)
    flipSwitchConfig_t flipSwitchConfig;              // create a new flipSwitch configuration

    flipSwitchConfig.deviceId = device.first;         // set the deviceId
    flipSwitchConfig.lastFlipSwitchChange = 0;        // set debounce time
    flipSwitchConfig.lastFlipSwitchState = false;     // set lastFlipSwitchState to false (LOW)--

    int flipSwitchPIN = device.second.flipSwitchPIN;  // get the flipSwitchPIN

    flipSwitches[flipSwitchPIN] = flipSwitchConfig;   // save the flipSwitch config to flipSwitches map
    pinMode(flipSwitchPIN, INPUT_PULLUP);                   // set the flipSwitch pin to INPUT
  }
}

bool onPowerState(String deviceId, bool &state)
{
  Serial.printf("%s: %s\r\n", deviceId.c_str(), state ? "on" : "off");
  int relayPIN = devices[deviceId].relayPIN; // get the relay pin for corresponding device
  digitalWrite(relayPIN, state);             // set the new relay state
  return true;
}

void handleFlipSwitches() {
  unsigned long actualMillis = millis();                                          // get actual millis
  for (auto &flipSwitch : flipSwitches) {                                         // for each flipSwitch in flipSwitches map
    unsigned long lastFlipSwitchChange = flipSwitch.second.lastFlipSwitchChange;  // get the timestamp when flipSwitch was pressed last time (used to debounce / limit events)

    if (actualMillis - lastFlipSwitchChange > DEBOUNCE_TIME) {                    // if time is > debounce time...

      int flipSwitchPIN = flipSwitch.first;                                       // get the flipSwitch pin from configuration
      bool lastFlipSwitchState = flipSwitch.second.lastFlipSwitchState;           // get the lastFlipSwitchState
      bool flipSwitchState = digitalRead(flipSwitchPIN);                          // read the current flipSwitch state
      if (flipSwitchState != lastFlipSwitchState) {                               // if the flipSwitchState has changed...
#ifdef TACTILE_BUTTON
        if (flipSwitchState) {                                                    // if the tactile button is pressed 
#endif      
          flipSwitch.second.lastFlipSwitchChange = actualMillis;                  // update lastFlipSwitchChange time
          String deviceId = flipSwitch.second.deviceId;                           // get the deviceId from config
          int relayPIN = devices[deviceId].relayPIN;                              // get the relayPIN from config
          bool newRelayState = !digitalRead(relayPIN);                            // set the new relay State
          digitalWrite(relayPIN, newRelayState);                                  // set the trelay to the new state

          SinricProSwitch &mySwitch = SinricPro[deviceId];                        // get Switch device from SinricPro
          mySwitch.sendPowerStateEvent(!newRelayState);                            // send the event
#ifdef TACTILE_BUTTON
        }
#endif      
        flipSwitch.second.lastFlipSwitchState = flipSwitchState;                  // update lastFlipSwitchState
      }
    }
  }
}

void setupWiFi()
{
  Serial.printf("\r\n[Wifi]: Connecting");
  WiFi.begin(WIFI_SSID, WIFI_PASS);

  while (WiFi.status() != WL_CONNECTED)
  {
    Serial.printf(".");
    delay(250);
  }
  
  Serial.printf("connected!\r\n[WiFi]: IP-Address is %s\r\n", WiFi.localIP().toString().c_str());
}

void setupSinricPro()
{
  for (auto &device : devices)
  {
    const char *deviceId = device.first.c_str();
    SinricProSwitch &mySwitch = SinricPro[deviceId];
    mySwitch.onPowerState(onPowerState);
  }

  SinricPro.begin(APP_KEY, APP_SECRET);
  SinricPro.restoreDeviceStates(true);
}

void setup()
{
  Serial.begin(BAUD_RATE);

  setupRelays();
  setupFlipSwitches();
  setupWiFi();
  setupSinricPro();

  Serial.begin(115200);

  pinMode(SwitchPin1, INPUT_PULLUP);
  pinMode(SwitchPin2, INPUT_PULLUP);
  pinMode(SwitchPin3, INPUT_PULLUP);
  pinMode(SwitchPin4, INPUT_PULLUP);

  pinMode(RelayPin1, OUTPUT);
  pinMode(RelayPin2, OUTPUT);
  pinMode(RelayPin3, OUTPUT);
  pinMode(RelayPin4, OUTPUT);

  digitalWrite(RelayPin1, HIGH);
  digitalWrite(RelayPin2, HIGH);
  digitalWrite(RelayPin3, HIGH);
  digitalWrite(RelayPin4, HIGH);

  Blynk.virtualWrite(button1_vpin, relay1_state);
  Blynk.virtualWrite(button2_vpin, relay2_state);
  Blynk.virtualWrite(button3_vpin, relay3_state);
  Blynk.virtualWrite(button4_vpin, relay4_state);
  
  Blynk.begin(auth, WIFI_SSID, WIFI_PASS);
}

void loop()
{
  SinricPro.handle();
  handleFlipSwitches();

  listen_push_buttons();

  Blynk.run();
  timer.run();
}

void listen_push_buttons()
{
if(digitalRead(SwitchPin1) == LOW){
      delay(200);
      control_relay(1);
      Blynk.virtualWrite(button1_vpin, !relay1_state); //update button state
    }
else if (digitalRead(SwitchPin2) == LOW){
      delay(200);
      control_relay(2);
      Blynk.virtualWrite(button2_vpin, relay2_state); //update button state
    }
else if (digitalRead(SwitchPin3) == LOW){
      delay(200);
      control_relay(3);
      Blynk.virtualWrite(button3_vpin, relay3_state); //update button state
    }
else if (digitalRead(SwitchPin4) == LOW){
      delay(200);
      control_relay(4);
      Blynk.virtualWrite(button4_vpin, relay4_state); //update button state
    }
    }
   
    void control_relay(int relay)
    {
  if(relay == 1){
    relay1_state = !relay1_state;
    digitalWrite(RelayPin1, relay1_state);
    Serial.print("Relay1 State = ");
    Serial.println(relay1_state);
    delay(50);
  }
  else if(relay == 2){
    relay2_state = !relay2_state;
    digitalWrite(RelayPin2, relay2_state);
    delay(50);
  }
  else if(relay == 3){
    relay3_state = !relay3_state;
    digitalWrite(RelayPin3, relay3_state);
    delay(50);
  }
  else if(relay == 4){
    relay4_state = !relay4_state;
    digitalWrite(RelayPin4, relay4_state);
    delay(50);
  }
  }