// RTC demo for ESP32, that includes TZ and DST adjustments
// Get the POSIX style TZ format string from  https://github.com/nayarsystems/posix_tz_db/blob/master/zones.csv
// Created by Hardy Maxa
// Complete project details at: https://RandomNerdTutorials.com/esp32-ntp-timezones-daylight-saving/

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


const char * ssid="REPLACE_WITH_YOUR_SSID";
const char * wifipw="REPLACE_WITH_YOUR_PASSWORD";
int thehourtz;
int thehourgmt;
int sunrisehour;
int sunsethour;

struct tm tsunrise = {0};
struct tm tsunset = {0};
struct tm timeinfo;

void setTimezone(String timezonestr){
  Serial.printf("  Setting Timezone to %s\n",timezonestr.c_str());
  setenv("TZ",timezonestr.c_str(),1);  //  Now adjust the TZ.
  tzset();
  //Serial.print(timezone);
  //printf("Timezone offset from UTC: %ld seconds\n", timezone);
}

void initTime(String timezonestr){
  
  
  Serial.println("Setting up time");
  configTime(0, 0, "pool.ntp.org");    // First connect to NTP server, with 0 TZ offset
  if(!getLocalTime(&timeinfo)){
    Serial.println(" Failed to obtain time");
    return;
  }
  Serial.println("  Got the time from NTP");
  // Now we can set the real timezone
  setTimezone(timezonestr);
}

void printLocalTime(){
  struct tm timeinfo;
  configTime(0, 0, "pool.ntp.org");  
  setTimezone("EST5EDT,M3.2.0,M11.1.0");
  if(!getLocalTime(&timeinfo)){
    Serial.println("Failed to obtain time 1");
    return;
  }
  //Serial.println(&timeinfo, "%A, %B %d %Y %H:%M:%S zone %Z %z ");
  thehourtz = timeinfo.tm_hour;
  //Serial.print(timeinfo.tm_gmtoff);
  Serial.println(thehourtz);

  setTimezone("GMT0");
  if(!getLocalTime(&timeinfo)){
    Serial.println("Failed to obtain time 1");
    return;
  }
  //Serial.println(&timeinfo, "%A, %B %d %Y %H:%M:%S zone %Z %z ");
  thehourgmt = timeinfo.tm_hour;
  //Serial.print(timeinfo.tm_gmtoff);
  Serial.println(thehourgmt);
}

void  startWifi(){
  WiFi.begin(ssid, wifipw);
  Serial.println("Connecting Wifi");
  while (WiFi.status() != WL_CONNECTED) {
    Serial.print(".");
    delay(500);
  }
  Serial.print("Wifi RSSI=");
  Serial.println(WiFi.RSSI());
}


void setup(){
  Serial.begin(115200);
  Serial.setDebugOutput(true);
  Serial.print("Connecting to WiFi");
  WiFi.begin("Wokwi-GUEST", "", 6);
  while (WiFi.status() != WL_CONNECTED) {
    delay(100);
    Serial.print(".");
  }
  Serial.println(" Connected!");

  //setTimezone("EST5EDT,M3.2.0,M11.1.0");   // Set for New York/AU
  

  HTTPClient http;
  String serverPath = "https://api.sunrise-sunset.org/json?lat=42.186630&lng=-71.305450&formatted=0";
    

      // Your Domain name with URL path or IP address with path
  http.begin(serverPath.c_str());

  int httpResponseCode = http.GET();
      
      if (httpResponseCode>0) {
        Serial.print("HTTP Response code: ");
        Serial.println(httpResponseCode);
        String payload = http.getString();
        Serial.println(payload);
        DynamicJsonDocument doc(1024);
        DeserializationError err = deserializeJson(doc, payload);

        if (err) {
          Serial.print(F("deserializeJson() failed with code "));
          Serial.println(err.f_str());


        }else{
          //2023-03-16T22:53:48+00:00

          const char* sunrise = doc["results"]["sunrise"];
          strptime(sunrise,"%Y-%m-%dT%H:%M:%S%z",&tsunrise);
          Serial.println(sunrise);
          Serial.println(tsunrise.tm_hour);

          const char* sunset = doc["results"]["sunset"];
          strptime(sunset,"%Y-%m-%dT%H:%M:%S%z",&tsunset);
          
          
          Serial.println(sunset);
          Serial.println(tsunset.tm_hour);
        }
      }
      else {
        Serial.print("Error code: ");
        Serial.println(httpResponseCode);
      }
      // Free resources
      http.end();
  printLocalTime();
}

void loop() {
  int i;
  
  // put your main code here, to run repeatedly:
  
  //delay(1500);
  //printLocalTime();
  // Now lets watch the time and see how long it takes for NTP to fix the clock
  
}