#include <WiFi.h>
#include <ThingSpeak.h>
#include <LiquidCrystal_I2C.h>

LiquidCrystal_I2C lcd(0x27, 16, 2); // I2C address 0x27, 16 column and 2 rows

const char* WIFI_NAME = "Wokwi-GUEST"; // Name of the WiFi network
const char* WIFI_PASSWORD = ""; // Password of the WiFi network
// ThingSpeak cloud
unsigned long myChannelNumber =  2662771;
const char * myWriteAPIKey = "Y611TJ3WUX5KMOV1";
const char* readAPIKey = "2KQ1HDCNBIU96N1W";
// Status code send / get from cloud
int statusCode;
WiFiClient client; // Create a WiFi client object


const int accept = 14;
const int deny = 27;
const int buzzer = 13;

// put your setup code here, to run once:
void setup()
{
  Serial.begin(115200);
  lcd.init(); // initialize the lcd
  lcd.backlight();
  lcd.begin(16, 2);
  lcd.setCursor(0, 0);
  lcd.print("DANG KHOI DONG");
  pinMode(accept, INPUT);
  pinMode(deny, INPUT);
  pinMode(buzzer, OUTPUT);
  WiFi.mode(WIFI_STA);
  ThingSpeak.begin(client);
  delay(1000);
  lcd.clear();
}

void loop()
{
  int state1 = digitalRead(accept);
  int state2 = digitalRead(deny);
  // Ket noi wifi
  if (WiFi.status() != WL_CONNECTED)
  {
    lcd.setCursor(0, 0);
    lcd.print("DANG KET NOI DEN");
    lcd.setCursor(1, 6);
    lcd.print("WIFI");

    Serial.print("Attempting to connect");
    WiFi.begin(WIFI_NAME, WIFI_PASSWORD); // Connect to the WiFi network
    while (WiFi.status() != WL_CONNECTED) {
      delay(1000);
      Serial.println("Wifi not connected"); // Print a message if WiFi is not connected
    }
    Serial.println("Wifi connected !"); // Print a message if WiFi is connected
    Serial.println("Local IP: " + String(WiFi.localIP())); // Print the local IP address
    WiFi.mode(WIFI_STA); // Set the WiFi mode to station mode
    ThingSpeak.begin(client); // Initialize the ThingSpeak library

    lcd.clear();
    lcd.setCursor(0, 0);
    lcd.print("KET NOI");
    lcd.setCursor(1, 0);
    lcd.print("THANH CONG");
    Serial.println("\nConnected.");
    delay(1000);
    lcd.clear();
  }

  if (state1 == HIGH)
  {
    int myInt = 466087775;
    int numberOfResults = 5;

    // Prepare the URL to get the recent results from Field 2
    String url = "https://api.thingspeak.com/channels/" + String(myChannelNumber) +
                 "/fields/2.json?api_key=" + readAPIKey + "&results=" + String(numberOfResults);

    // Loop through the latest entries from Field 2
    for (int i = 0; i < numberOfResults; i++) {
      int field2Value = ThingSpeak.readIntField(myChannelNumber, 2, readAPIKey);
      // Check if the read was successful
      if (field2Value == -1) {
        Serial.println("Failed to read data from ThingSpeak");
        break;
      } else {
        Serial.print("Field 2 value (entry ");
        Serial.print(i + 1);
        Serial.print("): ");
        Serial.println(field2Value);

        // Compare the value from ThingSpeak with your stored integer
        if (field2Value == myInt) {
          Serial.println("Values match!");
          ThingSpeak.setField(1, myInt);
          statusCode = ThingSpeak.writeFields(myChannelNumber, myWriteAPIKey);
          if (statusCode == 200) {
            Serial.println("Data pushed successfully");
            lcd.setCursor(0, 0);
            lcd.print("DUOC PHEP");
            tone(buzzer, 330, 3);
            delay(5000);
            lcd.clear();
            break;
          } else {
            Serial.println("Push error" + String(statusCode));
            lcd.setCursor(0, 0);
            lcd.print("KHONG DUOC PHEP");
            tone(buzzer, 659, 3);
            delay(5000);
            lcd.clear();
          }
        } else {
          Serial.println("Values do not match.");
          lcd.setCursor(0, 0);
          lcd.print("KHONG DUOC PHEP");
          tone(buzzer, 659, 3);
          delay(5000);
          lcd.clear();
        }
      }
    }
  }
  else if (state2 == HIGH)
  {
    int myInt = 56623776;
    int numberOfResults = 5;

    // Prepare the URL to get the recent results from Field 2
    String url = "https://api.thingspeak.com/channels/" + String(myChannelNumber) +
                 "/fields/2.json?api_key=" + readAPIKey + "&results=" + String(numberOfResults);

    // Loop through the latest entries from Field 2
    for (int i = 0; i < numberOfResults; i++) {
      int field2Value = ThingSpeak.readIntField(myChannelNumber, 2, readAPIKey);
      // Check if the read was successful
      if (field2Value == -1) {
        Serial.println("Failed to read data from ThingSpeak");
        break;
      } else {
        Serial.print("Field 2 value (entry ");
        Serial.print(i + 1);
        Serial.print("): ");
        Serial.println(field2Value);

        // Compare the value from ThingSpeak with your stored integer
        if (field2Value == myInt) {
          Serial.println("Values match!");
          ThingSpeak.setField(1, myInt);
          statusCode = ThingSpeak.writeFields(myChannelNumber, myWriteAPIKey);
          if (statusCode == 200) {
            Serial.println("Data pushed successfully");
            lcd.setCursor(0, 0);
            lcd.print("DUOC PHEP");
            tone(buzzer, 330, 3);
            delay(5000);
            lcd.clear();
            break;
          } else {
            Serial.println("Push error" + String(statusCode));
            lcd.setCursor(0, 0);
            lcd.print("KHONG DUOC PHEP");
            tone(buzzer, 659, 3);
            delay(5000);
            lcd.clear();
          }
        } else {
          Serial.println("Values do not match.");
          lcd.setCursor(0, 0);
          lcd.print("KHONG DUOC PHEP");
          tone(buzzer, 659, 3);
          delay(5000);
          lcd.clear();
          break;
        }
      }
    }

  }

}