#include <WiFi.h>
#include <PubSubClient.h>

// Update these with values suitable for your network.
const char* ssid = "Wokwi-GUEST";
const char* password = "";
const char* mqtt_server = "broker.mqtt.cool";

#define pump 32
#define Fan 33
#define Soil_sen 34
int Soil_value;

WiFiClient espClient;
PubSubClient client(espClient);
unsigned long lastMsg = 0;
#define MSG_BUFFER_SIZE  (50)
char msg[MSG_BUFFER_SIZE];
int value = 0;


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 callback digunakan publisher sebagai notif kalau data yg dipublish sudah terkirim
void callback(char* topic, byte* payload, unsigned int length) {
 /* Serial.print("Message arrived [");
  Serial.print(topic);
  Serial.print("] ");
  for (int i = 0; i < length; i++) {
    Serial.print((char)payload[i]);
  }
  Serial.println();

  // Switch on the LED if an 1 was received as first character
  if ((char)payload[0] == '1') {
    digitalWrite(2, LOW);   // Turn the LED on (Note that LOW is the voltage level
    // but actually the LED is on; this is because
    // it is active low on the ESP-01)
  } else {
    digitalWrite(2, HIGH);  // Turn the LED off by making the voltage HIGH
  }*/

}


void setup() {
  
  // put your setup code here, to run once:
  Serial.begin(115200);
  setup_wifi();

  client.setServer(mqtt_server, 1883);
  client.setCallback(callback);
  
  pinMode(pump, OUTPUT);
  pinMode(Fan, OUTPUT);
  pinMode(Soil_sen, INPUT);
  Serial.println("Hello, ESP32!");

  
}

void loop() {

  if (!client.connected()) {
    reconnect();
  }

  Soil_value = analogRead(Soil_sen);
 Soil_value = map(Soil_value, 0, 4095, 0, 100);
  Serial.println(Soil_value);
  if(Soil_value >= 35 && Soil_value <= 55){
digitalWrite(pump, HIGH);
digitalWrite(Fan, LOW);
  }
  else if(Soil_value >= 56){
    digitalWrite(pump, HIGH);
    digitalWrite(Fan, HIGH);
  }
  else {
    digitalWrite(pump, LOW);
    digitalWrite(Fan, LOW);
  }

  snprintf (msg, MSG_BUFFER_SIZE, "Soil Level : %d", Soil_value);
  Serial.print("Publish message: ");
  Serial.println(msg);
  client.publish("sensor/temperature", msg);
  
  delay(150);
  /*
  digitalWrite(pump, HIGH);
  delay(1000); // this speeds up the simulation
  digitalWrite(pump, LOW);
  delay(1000);
  */
}



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("/indobot/mqtt", "Indobot");
      // ... and resubscribe
      client.subscribe("/indobot/mqtt");
    } else {
      Serial.print("failed, rc=");
      Serial.print(client.state());
      Serial.println(" try again in 5 seconds");
      // Wait 5 seconds before retrying
      delay(5000);
    }
  }
}