#include <WiFi.h>
#include <HTTPClient.h>
#include <Arduino_JSON.h>
int IMAN = 23;
int LED = 4; //MOSFET
const char* ssid = "XXXXX";
const char* password =  "XXXXXX";
int AQI;

  
void setup() {
  pinMode(IMAN, OUTPUT); //Relé para electroimanes
  pinMode (LED, OUTPUT); //LED ambiental
  digitalWrite(LED, HIGH);
  Serial.begin(115200);
  delay(4000);
  WiFi.begin(ssid, password);
  
  while (WiFi.status() != WL_CONNECTED) {
    delay(1000);
    Serial.println("Connecting to WiFi..");
  }
  
  Serial.println("Connected to the WiFi network");
   if ((WiFi.status() == WL_CONNECTED)) { //Check the current connection status
  
    HTTPClient http;
  
    http.begin("https://api.waqi.info/feed/puebla/?token=76ff974cc1e907f427cee4843cc8bfd14d9aa571"); //Specify the URL
    int httpCode = http.GET();                                        //Make the request
  
    if (httpCode > 0) { //Check for the returning code
  
        String payload = http.getString();
        String jsonString = payload;
        String digits = jsonString.substring(29, 32);
        AQI = digits.toInt();
        Serial.println(AQI);
          AQI = map(AQI, 0, 500, 1, 5); //Mapeo
      }
  
    else {
      Serial.println("Error on HTTP request");
    }
  
    http.end(); //Free the resources
  }
}
  
void loop() {
  switch (AQI) {
    case 1: //Calidad buena 60 bpm
    digitalWrite(IMAN, HIGH);
    delay(1000);
    digitalWrite(IMAN, LOW);
    delay(1000);
    break;
    case 2: //Calidad regular 105 bpm
    digitalWrite(IMAN, HIGH);
    delay(571);
    digitalWrite(IMAN, LOW);
    delay(571);   
    break;
    case 3: //Calidad mala 155 bpm
    digitalWrite(IMAN, HIGH);
    delay(387);
    digitalWrite(IMAN, LOW);
    delay(387);    
    break;
    case 4: //Calidad terrible 205 bpm
    digitalWrite(IMAN, HIGH);
    delay(292);
    digitalWrite(IMAN, LOW);
    delay(292);   
    break;
    case 5: //Calidad peligrosa 250 bpm
    digitalWrite(IMAN, HIGH);
    delay(240);
    digitalWrite(IMAN, LOW);
    delay(240);    
    break;
  }

 

  
//  delay(100);
  
}