#include <WiFi.h>
#include <PubSubClient.h>
#include <OneWire.h>
#include <DallasTemperature.h>
#include <ArduinoJson.h>

#include "DHTesp.h"
const char* ssid = "Wokwi-GUEST";
const char* password = "";
const char* mqtt_server = "broker.hivemq.com";
const char* stopic = "led22";//รับข้อมูลเข้า
const char* ptopic = "temp666";//ส่งข้อมูลออก
const char* btopic = "btn22";//ส่งข้อมูลออก
const char* bbtopic = "btn33";//ส่งข้อมูลออก
//const int oneWireBus = 4;  // dùng pin GPIO4

const int DHT_PIN = 15; // DHT22
char result_temp[10]; // Buffer big enough for 7-character float
char result_hum[10]; // Buffer big enough for 7-character float

WiFiClient espClient;
PubSubClient client(espClient);
unsigned long lastMsg = 0;

DHTesp dhtSensor;
//btnlock
int btn1 ;
int btnlock1;
int state1;
int btn2 ;
int btnlock2;
int state2;
int btn1lock;
int btn2lock;

void setup_wifi() {

  delay(10);
  // We start by connecting to a WiFi network
  Serial.println();
  Serial.print("Connecting to ");
  Serial.println(ssid);

  WiFi.mode(WIFI_STA);
  WiFi.begin(ssid, password);

  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }

  randomSeed(micros());

  Serial.println("");
  Serial.println("WiFi connected");
  Serial.println("IP address: ");
  Serial.println(WiFi.localIP());
}


void ReceivedMessage(char* topic, byte* payload, unsigned int length) {
  // Output the first character of the message to serial (debug)
  StaticJsonDocument<200> doc;
  deserializeJson(doc, payload, length);
  
  // Extract values from the JSON data
  String id = doc["id"];//ส่งข้อมูลจาก node red เป็น string
  String data = doc["data"];//
  Serial.print(id);
  Serial.print(":");
  Serial.println(data);

  // เพิ่ม
    if(id == "pin12" && data == "on" ){
digitalWrite(12, LOW);
delay(10);
  }else if(id== "pin12" && data == "off" ){
digitalWrite(12, HIGH);
  }delay(20);

    if(id == "pin13" && data == "on" ){
digitalWrite(13, LOW);
delay(10);
  }else if(id== "pin13" && data == "off" ){
digitalWrite(13, HIGH);
  }delay(20);

    if(id == "pin14" && data == "on" ){
digitalWrite(14, LOW);
delay(10);
  }else if(id== "pin14" && data == "off" ){
digitalWrite(14, HIGH);
  }delay(20);


}


void reconnect() {
  // Loop until we're reconnected
  while (!client.connected()) {
    Serial.print("Attempting MQTT connection...");
    // Create a random client ID
    String clientId = "ESP8266Client-";
    clientId += String(random(0xffff), HEX);
    // Attempt to connect
    if (client.connect(clientId.c_str())) {
      Serial.println("connected");
      
      // Once connected, publish an announcement...
      client.publish(ptopic, "hello world");
       // ... and resubscribe
      client.subscribe(stopic);
    } else {
      Serial.print("failed, rc=");
      Serial.print(client.state());
      Serial.println(" try again in 5 seconds");
      // Wait 5 seconds before retrying
      delay(1000);
    }
  }
}

void publish_temp()
{
      TempAndHumidity  data_temp = dhtSensor.getTempAndHumidity();
      dtostrf(data_temp.temperature, 6, 2, result_temp); // Leave room for too large numbers!
      dtostrf(data_temp.humidity, 6, 2, result_hum); // Leave room for too large numbers!

      DynamicJsonDocument json(100);
      //ส่งข้อมูลออกไป
      json["temp"] = result_temp; 
      json["humi"] = result_hum;
      delay(20);
      //  json["counter"] = counter;
      String jsonString;
      serializeJson(json, jsonString);
      
      const char* payload = jsonString.c_str();
     // Serial.print("Publishing: ");
      ///Serial.println(payload);
      client.publish(ptopic, payload);
      //Serial.print("Done!");

}

void setup() {
  //LED
  pinMode(12, OUTPUT);
  pinMode(13, OUTPUT);
  pinMode(14, OUTPUT);
  pinMode(2, INPUT);
  pinMode(4, INPUT);
  pinMode(5, INPUT);
btnlock1=1;
state1 =0;
btnlock2=1;
state2 =0;
btn1lock=1;
btn2lock=1;
  // put your setup code here, to run once:
  Serial.begin(115200);
  Serial.println("Hello, ESP32!");
  Serial.begin(115200);
  dhtSensor.setup(DHT_PIN, DHTesp::DHT22);

  setup_wifi();
  client.setServer(mqtt_server, 1883);
  client.setCallback(ReceivedMessage);
  
}

void loop() {
   if (!client.connected()) {
    reconnect();
  }
   btn1  = digitalRead(2);
   btn2  = digitalRead(4);
  
  client.loop();
  publish_temp();
// btn();

  if(btn1 == 1 && btn1lock == 1 ){
  client.publish(btopic, "1");
  Serial.println(btn1);
  btn1lock= 0;
}
if(btn1 == 0){
  btn1lock = 1;
}
delay(10);

if(btn2 == 1 && btn2lock == 1 ){
   client.publish(bbtopic, "-1");
  Serial.println(btn2);
  btn2lock= 0;
}
if(btn2 == 0){
  btn2lock = 1;
}
delay(10);
}