#include <WiFi.h>
#include <HTTPClient.h>
#include <DHT.h>

const char* ssid = "Wokwi-GUEST";
const char* password = " ";
const char* token = "UNuHlNN8kYeQOISWw5XiL2EYoz2LDpTigRBamlXJfum";


#define DHTPIN 2      // Pin connected to DHT22
#define DHTTYPE DHT22 // DHT sensor type
DHT dht(DHTPIN, DHTTYPE);

int pirPin = 4;
int ledPin = 18;
int buzzer = 5;
int pirState = LOW;
int val = 0;

void setup() {
  Serial.begin(115200);
  dht.begin();
  WiFi.begin("Wokwi-GUEST", "",6);
  
  while (WiFi.status() != WL_CONNECTED) {
    delay(1000);
    Serial.println("Connecting to WiFi...");
  }
  Serial.println("Connected to WiFi");
  Serial.println(" READY ");
  
  pinMode(pirPin, INPUT);
  pinMode(ledPin, OUTPUT);
  pinMode(buzzer, OUTPUT);
  digitalWrite(ledPin, LOW);  // ให้ LED ปิดตอนเริ่มต้น
  digitalWrite(buzzer, LOW);

} 

void loop() {
  if (WiFi.status() == WL_CONNECTED) {
    HTTPClient http;

    http.begin("https://notify-api.line.me/api/notify");
    http.addHeader("Authorization", "Bearer " + String(token));
    http.addHeader("Content-Type", "application/x-www-form-urlencoded");

  val = digitalRead(pirPin);  // read input value
  if (val == HIGH) {            // check if the input is HIGH
    digitalWrite(ledPin, HIGH);  // turn LED ON
    if (pirState == LOW) {
      // we have just turned on
      http.POST("message=Motion Detected");
      Serial.println("Motion detected!");
      // We only want to print on the output change, not state
      pirState = HIGH;
    }
  } else {
    digitalWrite(ledPin, LOW); // turn LED OFF
    if (pirState == HIGH) {
      // we have just turned of
      http.POST("message=Motion ended");
      Serial.println("Motion ended!");
      // We only want to print on the output change, not state
      pirState = LOW;
    }
  }

    float humidity = dht.readHumidity();
    float temperature = dht.readTemperature();

    if (isnan(humidity) || isnan(temperature)) {
      Serial.println("Failed to read from DHT sensor!");
    } else {
      Serial.print("ความชื้นสัมพัทธ์: ");
      Serial.print(humidity);
      Serial.print(" %\t");
      Serial.print("อุณหภูมิ: ");
      Serial.print(temperature);
      Serial.println(" °C");

      if (temperature > 40) {
        http.POST("message=อุณหภูมิสูงมาก ระวังเกิดอาการ Heat Stroke🌡");
        Serial.println("High temperature message sent");
      }

      if (humidity < 40) {
        http.POST("message= ความชื้นต่ำกว่ามาตรฐาน ดูแลตัวเองดีๆ นะ 🌫");
        Serial.println("Low humidity message sent");
        Serial.println("==================================");
      }
    }

    int httpCode = http.POST("READY");  // Use an empty POST request to send only headers

    if (httpCode > 0) {
      String response = http.getString();
      //Serial.print("HTTP Response code: ");
      //Serial.println(httpCode);
      //Serial.print("Server response: ");
     // Serial.println(response);
    } else {
      Serial.println(".....");
    }

    http.end();

    delay(3000); // Send a message and read sensor data every 5 seconds
  }
}