#include <Wire.h>
#include <LiquidCrystal_I2C.h>
#include <NewPing.h>
#include <WiFi.h>
#include <WiFiClientSecure.h>

#define TRIGGER_PIN 4
#define ECHO_PIN 2
#define BUTTON_PIN 5
#define MAX_DISTANCE 500

const char* ssid = "Wokwi-GUEST";
const char* password = "";
const char* token = "ij3BTrbSEN804X54cvkb4h2FdneatPFXkENlWBrXlRp";

LiquidCrystal_I2C lcd(0x27, 16, 2);
NewPing sonar(TRIGGER_PIN, ECHO_PIN, MAX_DISTANCE);

void setup() {
  
  Wire.begin(21, 22);
  lcd.begin(16, 2);
  lcd.backlight();
  pinMode(BUTTON_PIN, INPUT_PULLUP);

  Serial.begin(115200);
  Serial.println("Hello, Sornnaret009");
  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) {
    delay(10000);
    Serial.println("Connecting to WiFi...");
  }
  Serial.println("Connected to WiFi");
  
  lcd.setCursor(0, 0);
  lcd.print("Hello, Sornnaret009");
  delay(5000); 
  lcd.clear();
}

void loop() {
  unsigned int distance = sonar.ping_cm();

  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("Distance: ");
  lcd.print(distance);
  lcd.print(" cm");

  if (digitalRead(BUTTON_PIN) == LOW) {
    sendToLineNotify(distance);
  }
delay(500);
}

void sendToLineNotify(unsigned int distance) {
  String message = "Distance: " + String(distance) + " cm";

  WiFiClientSecure client;
  client.setInsecure();
  if (!client.connect("notify-api.line.me", 443)) {
    Serial.println("Connection failed!");
    return;
  }

  String request = 
    String("POST /api/notify HTTP/1.1\r\n") +
    "Host: notify-api.line.me\r\n" +
    "Authorization: Bearer " + token + "\r\n" +
    "Content-Type: application/x-www-form-urlencoded\r\n" +
    "Content-Length: " + String(message.length() + 8) + "\r\n\r\n" +
    "message=" + message;
    
  client.print(request);

  while (client.connected()) {
    String line = client.readStringUntil('\n');
    if (line == "\r") {
      break;
    }
  }

  client.stop();
}