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#include <WiFi.h>
#include <HTTPClient.h>
#include "time.h"

// Replace with your network credentials
const char* ssid = "FRITZ!Box 6490 Cable";
const char* password = "xxx";

// NTP server to request epoch time
const char* ntpServer = "fritz.box";

const String gooleAppsScriptUrl = "https://script.google.com/macros/s/xxx/exec";

RTC_DATA_ATTR int bootCount = 0;

//Multithreading
TaskHandle_t googleCalendar;

void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  WiFi.begin(ssid, password);
  Serial.print("Connecting to WiFi ..");
  while (WiFi.status() != WL_CONNECTED) {             
    if(millis() < 12000){
      Serial.print('.');
      delay(1000);
    }
    else {
      ESP.restart();
    }
  }
  Serial.println(WiFi.localIP());
}

void loop() {
  
  // put your main code here, to run repeatedly:
  if (googleCalendar == NULL){
    Serial.println("creating task");
    xTaskCreate(
    setGoogleCalendar
    ,  "Google calendar request"
    ,  20000  // Stack size
    ,  NULL  // When no parameter is used, simply pass NULL
    ,  1  // Priority
    ,  &googleCalendar // With task handle we will be able to manipulate with this task.
    );
  }
  delay(500);
}

void setGoogleCalendar(void *pvParameters) {
  (void) pvParameters;
  Serial.println("task created");
  
  if(WiFi.status() != WL_CONNECTED){
    Serial.println("google Calendar error: no WiFi"); 
    googleCalendar = NULL;
    vTaskDelete(NULL);
  }
  HTTPClient http;
  http.begin(gooleAppsScriptUrl.c_str());
  http.setFollowRedirects(HTTPC_STRICT_FOLLOW_REDIRECTS);
  String payload = "";
  int httpStatus = http.GET();

  Serial.println("this is the last thing that gets printed in the third run");
  if (httpStatus == 200){
    Serial.println("this will not get printed in the third run");
    payload = http.getString();
  }
  else {
    http.end();
    Serial.println("failed google calendar http request: " + String(httpStatus));
    googleCalendar = NULL;
    vTaskDelete(NULL);
  }
  
  Serial.println(payload);

  http.end();
  
  googleCalendar = NULL;
  vTaskDelete(NULL);
}