/*********
  Rui Santos
  Complete project details at https://RandomNerdTutorials.com
*********/
#define VERSION "14-05-2022"
#include <WiFi.h>
#include <WiFiClientSecure.h>
#include <WebServer.h>
#include <ESPmDNS.h>
#include <HTTPClient.h>
#include <Arduino_JSON.h>
const char *ssid ="ON_AIR2021";  // attention aux  probleme avec guillemets (anglais) orientés !!!
const char *password ="cGT>1_@?LOdBqXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXoG6}v4";
String openWeatherMapApiKey ="b05d3fc50b32cd28727fe2422552b975";
//http://api.openweathermap.org/data/2.5/weather?q=Meximieux,fr&appid=b05d3fc50b32cd28727fe2422552b975&units=metric
String city = "Meximieux";
String countryCode = "fr";
String units="metric";

// THE DEFAULT TIMER IS SET TO 20 SECONDS FOR TESTING PURPOSES
// For a final application, check the API call limits per hour/minute to avoid getting blocked/banned
unsigned long lastTime = 0;
// Set timer to 20 seconds (20000)
unsigned long timerDelay = 60000;
String jsonBuffer;
int Result;
int i=1;
int j=0;
int status = WL_IDLE_STATUS; 
byte mac[6];
long rssi ;
byte encryption;

void setup() {
  delay(5000);  // le temps de stopper et ré-armer le terminal pour voir le debut du programme
  Serial.begin(115200);
  Serial.println(" ");
   delay(200);
  Serial.println("VSC ESP32_HTTP_GET_OpenWeatherMap");
  Serial.print("Version :"); Serial.println(VERSION);
    delay(1000);
//  Serial.println("Wifi disconnect");
//  WiFi.disconnect();
  WiFi.begin(ssid,password);
  Serial.print("Connection en cours :");
  j=0;
 while(WiFi.status() != WL_CONNECTED);
 {
  // Result=WiFi.status();
 //  Serial.print("  Wifi Status = ");
 //  Serial.println(Result);
  Serial.print(".");
  if (j>32) 
  {
     j=0; Serial.println(".");
   }
   j++;
    delay(250);
  } 
  Serial.println("");
  Serial.print("Connection au reseau Wifi ");
  Serial.print(ssid);
  Serial.print(" et adresse IP : ");
  Serial.println(WiFi.localIP());
  Serial.println("Timing =60sec  (timerDelay variable), ...rafraichissement dans 1mn.");

// print your MAC address:
  WiFi.macAddress(mac);
  Serial.print("MAC address: ");
  Serial.print(mac[0], HEX);
  Serial.print(":");
  Serial.print(mac[1], HEX);
  Serial.print(":");
  Serial.print(mac[2], HEX);
  Serial.print(":");
  Serial.print(mac[3], HEX);
  Serial.print(":");
  Serial.print(mac[4], HEX);
  Serial.print(":");
  Serial.println(mac[5],HEX);
  delay(1000);
  rssi = WiFi.RSSI();
  Serial.print("signal strength (RSSI):");  
  Serial.println(rssi);

}

void loop() {
  // Send an HTTP GET request
  if ((millis() - lastTime) > timerDelay) 
  {
    // Check WiFi connection status
    if(WiFi.status()== WL_CONNECTED)
    {
     String serverPath = "http://api.openweathermap.org/data/2.5/weather?q=" + city + "," + countryCode + "&APPID=" + openWeatherMapApiKey+"&units="+units;
     jsonBuffer = httpGETRequest(serverPath.c_str());
      //Serial.println(jsonBuffer);
      JSONVar myObject = JSON.parse(jsonBuffer);
      // JSON.typeof(jsonVar) can be used to get the type of the var
      if (JSON.typeof(myObject) == "undefined") {
        Serial.println("Parsing input failed!");
        return;
      }
      if (i<2)
      {
      Serial.println(" ");
      Serial.print("JSON object = ");
      Serial.println(myObject);
      }
      Serial.print(" Lieu: ");
      Serial.println(myObject["name"]);
      Serial.print(" mesure # ");  Serial.println(i);
      Serial.print("Couverture nuageuse : ");
      Serial.println(myObject["clouds"]["all"]);
      Serial.print("Temperature: ");
      Serial.println(myObject["main"]["temp"]);
      Serial.print("Pression: ");
      Serial.print(myObject["main"]["pressure"]);  Serial.println(" mBar");
      Serial.print("Humidite: ");
      Serial.println(myObject["main"]["humidity"]);
      Serial.print("Visibilité : ");
      Serial.println(myObject["visibility"]);
      Serial.print("Vitesse du vent: ");
      Serial.println(myObject["wind"]["speed"]);
     i++;
 
    //   Serial.print("Pluie : ");
   //   Serial.println(myObject["rain"]["3H"]);
    }
    else {
      Serial.println("WiFi Disconnected");
    }
    lastTime = millis();
  }
}

String httpGETRequest(const char* serverName)
{
  WiFiClient client;
  HTTPClient http;
  // Your Domain name with URL path or IP address with path
  http.begin(client, serverName);
  // Send HTTP POST request
  int httpResponseCode = http.GET();
  String payload = "{}"; 
  if (httpResponseCode>0) {
    Serial.println("");
    Serial.print("HTTP Response code: ");
    Serial.println(httpResponseCode);
    payload = http.getString();
  }
  else {
    Serial.print("Error code: ");
    Serial.println(httpResponseCode);
  }
  // Free resources
  http.end();
  return payload;
}

/*  
 *   Resultats sur terminal YAT COM57 115200bds
 .
(18:14:35.250) VSC ESP32_HTTP_GET_OpenWeatherMap
(18:14:35.250) Version :14-05-2022
(18:14:36.375) Connecting.
(18:14:39.250) Connected to WiFi network with IP Address: 192.168.0.103
(18:14:39.250) Timer set to 30sec n (timerDelay variable), it will take 30sec before publishing the first reading.
(18:14:39.250) MAC address: 94:C9:8D:F2:3A:8
(18:14:40.250) signal strength (RSSI):-67
(18:15:13.251) 
(18:15:13.267) HTTP Response code: 200
(18:15:13.267)  
(18:15:13.267) JSON object = {"coord":{"lon":5.1953,"lat":45.9084},"weather":[{"id":804,"main":"Clouds","description":"overcast clouds","icon":"04d"}],"base":"stations","main":{"temp":23.86,"feels_like":24.1,"temp_min":22.84,"temp_max":23.94,"pressure":1019,"humidity":69,"sea_level":1019,"grnd_level":990},"visibility":10000,"wind":{"speed":3.82,"deg":344,"gust":5.53},"clouds":{"all":98},"dt":1652458512,"sys":{"type":1,"id":6498,"country":"FR","sunrise":1652415004,"sunset":1652468471},"timezone":7200,"id":2994094,"name":"Meximieux","cod":200}
(18:15:13.314)  Lieu: "Meximieux"
(18:15:13.314)  mesure # 1
(18:15:13.314) Couverture nuageuse : 98
(18:15:13.314) Temperature: 23.86
(18:15:13.314) Pression: 1019 mBar
(18:15:13.314) Humidite: 69
(18:15:13.314) Visibilité : 10000
(18:15:13.314) Vitesse du vent: 3.82
(18:15:46.544) 
(18:15:46.556) HTTP Response code: 200
(18:15:46.556)  Lieu: "Meximieux"
(18:15:46.722)  mesure # 2
(18:15:46.722) Couverture nuageuse : 98
(18:15:46.722) Temperature: 23.86
(18:15:46.722) Pression: 1019 mBar
(18:15:46.722) Humidite: 69
(18:15:46.722) Visibilité : 10000
(18:15:46.722) Vitesse du vent: 3.82


 
(17:49:51.764) HTTP Response code: 200
(17:49:51.795)  Lieu: "Meximieux"
(17:49:51.795)  mesure # 2
(17:49:51.795) Couverture nuageuse : 98
(17:49:51.795) Temperature: 23.86
(17:49:51.795) Pression: 1019 mBar
(17:49:51.795) Humidite: 69
(17:49:51.795) Visibilité : 10000
(17:49:51.795) Vitesse du vent: 3.82
(17:50:21.889) 
(17:50:21.898) HTTP Response code: 200
(17:50:21.898)  Lieu: "Meximieux"
(17:50:21.943)  mesure # 3
(17:50:21.943) Couverture nuageuse : 98
(17:50:21.943) Temperature: 23.86
(17:50:21.943) Pression: 1019 mBar
(17:50:21.943) Humidite: 69
(17:50:21.943) Visibilité : 10000
(17:50:21.943) Vitesse du vent: 3.82


HTTP Response code: 200
 Lieu: "Meximieux"
 mesure # 34
Couverture nuageuse : 98
Temperature: 23.86
Pression: 1019 mBar
Humidite: 69
Visibilité : 10000
Vitesse du vent: 3.82

HTTP Response code: 200
 Lieu: "Meximieux"
 mesure # 35
Couverture nuageuse : 98
Temperature: 23.86
Pression: 1019 mBar
Humidite: 69
Visibilité : 10000
Vitesse du vent: 3.82


*/