// Complete project details: http://RandomNerdTutorials.com/esp32-http-requests/

#include <Arduino.h>
#include <WiFi.h>
#include <WiFiClient.h>
#include <WiFiClientSecure.h>
#include <HTTPClient.h>


#define WIFI_SSID "Wokwi-GUEST"
#define WIFI_PASSWORD ""
#define WIFI_CHANNEL 6

// tentative appel en http, le server RTE retourne code 302 pour rediriger vers https
String urlhttp  =  "http://www.services-rte.com/cms/open_data/v1/tempoLight";
String urlhttps = "https://www.services-rte.com/cms/open_data/v1/tempoLight";
WiFiClient client;


void setup() {
  Serial.begin(115200);
  Serial.println();
  // Initialize Wi-Fi
  WiFi.mode(WIFI_STA);
  WiFi.begin(WIFI_SSID, WIFI_PASSWORD, WIFI_CHANNEL);
  Serial.print("Connecting to WiFi ..");
  while (WiFi.status() != WL_CONNECTED) {
    Serial.print('.');
    delay(1000);
  }
  Serial.println(WiFi.localIP());
 }

String askTempohttp(String url) {
  String payload = "-";
  WiFiClient *client = new WiFiClient;
  if(client) {
    HTTPClient http;//create an HTTPClient instance
    //Initializing an http communication using the secure client
    Serial.printf("[http] begin ... %s\n",url.c_str());
    if (http.begin(*client, url.c_str())) {  // http
      Serial.print("[http] GET...\n");
      // start connection and send HTTP header
      int httpCode = http.GET();
      // httpCode will be negative on error
      if (httpCode > 0) {
      // HTTP header has been send and Server response header has been handled
      Serial.printf("[http] GET... code: %d\n", httpCode);
      // file found at server
        if (httpCode == HTTP_CODE_OK || httpCode == HTTP_CODE_MOVED_PERMANENTLY) {
          payload = http.getString();
          //Serial.println(payload);// print server response payload
        }
      } else {
        Serial.printf("[http] GET... failed, error: %s\n", http.errorToString(httpCode).c_str());
      }
      http.end();
    } else {
      Serial.printf("Problem during http.begin('%s')\n",url.c_str());
    }
  } else {
    Serial.printf("[http] Unable to connect\n");
  }
  delete client;
  payload.trim();
  return payload;
}

String askTempohttps(String url) {
  String payload = "-";
  WiFiClientSecure *client = new WiFiClientSecure;
  if(client) {
    client->setInsecure();// set secure client without certificate
    HTTPClient http;//create an HTTPClient instance
    //Initializing an http communication using the secure client
    Serial.printf("[https] begin ... %s\n",url.c_str());
    if (http.begin(*client, url.c_str())) {  // http
      Serial.print("[https] GET...\n");
      // start connection and send HTTP header
      int httpCode = http.GET();
      // httpCode will be negative on error
      if (httpCode > 0) {
      // HTTP header has been send and Server response header has been handled
      Serial.printf("[https] GET... code: %d\n", httpCode);
      // file found at server
        if (httpCode == HTTP_CODE_OK || httpCode == HTTP_CODE_MOVED_PERMANENTLY) {
          payload = http.getString();
          //Serial.println(payload);// print server response payload
        }
      } else {
        Serial.printf("[https] GET... failed, error: %s\n", http.errorToString(httpCode).c_str());
      }
      http.end();
    } else {
      Serial.printf("Problem during http.begin('%s')\n",url.c_str());
    }
  } else {
    Serial.printf("[https] Unable to connect\n");
  }
  delete client;
  payload.trim();
  return payload;
}



void loop() {
  Serial.printf("Free mem : %d\n", esp_get_free_heap_size());
  Serial.println("AskTempohttp");
  Serial.println(askTempohttp(urlhttp));
  Serial.println();
  Serial.println("AskTempohttps");
  Serial.println(askTempohttps(urlhttps));
  Serial.println();
  Serial.println("Waiting before the next round...");
  delay(15000);
}