#include <WiFi.h>
#include <HTTPClient.h>
#include "DHT.h"
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>

#define DHTPIN 15
#define DHTTYPE DHT22

const char* ssid = "Wokwi-GUEST";
const char* password = "";
const char* token = "XRk6rqVm1KueW4xSLNhzpdQeQFScvqx77fbVQoitGEj";

DHT dht(DHTPIN, DHTTYPE);
Adafruit_SSD1306 display(128, 64, &Wire);

void setup() {
  Serial.begin(115200);

  WiFi.begin(ssid, password);
  display.begin(SSD1306_SWITCHCAPVCC, 0x3C);
  display.clearDisplay();
  display.setTextColor(WHITE, BLACK);
  display.setTextSize(1);

  while (WiFi.status() != WL_CONNECTED) {
    delay(1000);
    Serial.println("Connecting to WiFi...");
  }

  Serial.println("Connected to WiFi");
}

void loop() {
  float humidity = dht.readHumidity();
  float temperature = dht.readTemperature();

  Serial.print("Humidity: ");
  Serial.print(humidity);
  Serial.print(" %\t ");
  Serial.print("Temperature: ");
  Serial.print(temperature);
  Serial.println("C");

  bool sendNotification = false;

  if (temperature > 50) {
    display.clearDisplay();
    display.setCursor(0, 0);
    display.print("Humidity: ");
    display.print(humidity);
    display.print(" %");
    display.setCursor(0, 20);
    display.print("Temperature: ");
    display.print(temperature);
    display.print("C");
    display.display();
    sendNotification = true;
  }

  if (humidity < 20) {
    display.clearDisplay();
    display.setCursor(0, 0);
    display.print("Humidity: ");
    display.print(humidity);
    display.print(" %");
    display.setCursor(0, 20);
    display.print("Temperature: ");
    display.print(temperature);
    display.print("C");
    display.display();
    sendNotification = true;
  }

  if (sendNotification) {
    if (temperature > 50) {
      sendLineNotify("อุณหภูมิสูง !", 1, 3);
    }
    if (humidity < 20) {
      sendLineNotify("ความชื้นต่ำ !", 1, 5);
    }
  } else {
  
    display.clearDisplay();
    display.setCursor(0, 0);
    display.print("Humidity: ");
    display.print(humidity);
    display.print(" %");

    display.setCursor(0, 20);
    display.print("Temperature: ");
    display.print(temperature);
    display.print("C");
    display.display();
  }
  
  delay(1000);
}



void sendLineNotify(String message, int stickerPackageId, int stickerId) {
  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");

  String encodedMessage = "message=" + urlEncode(message) +
                         "&stickerPackageId=" + String(stickerPackageId) +
                         "&stickerId=" + String(stickerId);
  
  int httpCode = http.POST(encodedMessage);

  if (httpCode > 0) {
    String response = http.getString();

  } else {
    Serial.println("Error sending notification");
  }

  http.end();
}

String urlEncode(String value) {
  String encodedValue = "";
  char c;
  for (size_t i = 0; i < value.length(); i++) {
    c = value.charAt(i);
    if (isAlphaNumeric(c)) {
      encodedValue += c;
    } else {
      encodedValue += String('%');
      encodedValue += String(c, HEX);
    }
  }
  return encodedValue;
}