KMAWeatherJsonClient.cpp

/**The MIT License (MIT)

Copyright (c) 2016 by Seokjin Seo

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

See more at http://usemodj.com
*/

#include <ESP8266WiFi.h>
#include <WiFiClient.h>

#include "KMAWeatherJsonClient.h"

KMAWeatherJsonClient::KMAWeatherJsonClient(){
  
}

/* 
 *  www.data.go.kr
 *    OPEN API: (신)동네예보정보조회서비스
 * http://newsky2.kma.go.kr/service/SecndSrtpdFrcstInfoService2/ForecastSpaceData?ServiceKey=SERVICE_KEY&base_date=20151021&base_time=0230&nx=1&ny=1
 */

void KMAWeatherJsonClient::updateForecast(String serviceKey, String nx, String ny, String baseDate, String baseTime, int numOfRows) {
  isForecast = true;
  int pageNo = 1;
  String url = "/service/SecndSrtpdFrcstInfoService2/ForecastSpaceData?_type=json&ServiceKey="
  + serviceKey + "&base_date=" + baseDate + "&base_time=" + baseTime + "&nx=" + nx + "&ny=" + ny
  + "&numOfRows=" + String(numOfRows) + "&pageNo=";
  Serial.println(url);

  this->baseDate = baseDate;
  this->baseTime = baseTime;
  this->baseDateTime = MakeTime(baseDate, baseTime);
  do {
    doUpdate(url + String(pageNo));
    Serial.println(">>Page: " + String(pageNo) + " /TotalPages: " + String(GetTotalPages(numOfRows)));
    pageNo++;
  } while(pageNo <= GetTotalPages(numOfRows));
}

void KMAWeatherJsonClient::doUpdate(String url) {
  JsonStreamingParser parser;
  parser.setListener(this);
  
  WiFiClient client;
  const int httpPort = 80;
  if (!client.connect("newsky2.kma.go.kr", httpPort)) {
    Serial.println("KMA connection failed");
    return;
  }

  Serial.print("Requesting URL: ");
  Serial.println(url);

  // This will send the request to the server
  client.print(String("GET ") + url + " HTTP/1.1\r\n" +
               "Host: newsky2.kma.go.kr\r\n" +
               "Connection: close\r\n\r\n");
  while(!client.available()) {
    delay(1000);
  }

  int pos = 0;
  boolean isBody = false;
  char c;

  int size = 0;
  client.setNoDelay(false);
  while(client.connected()) {
    while((size = client.available()) > 0) {
      c = client.read();
      if (c == '{' || c == '[') {
        isBody = true;
      }
      if (isBody) {
        parser.parse(c);
      }
    }
  }
}

void KMAWeatherJsonClient::whitespace(char c) {
  Serial.println("whitespace");
}

void KMAWeatherJsonClient::startDocument() {
  Serial.println("start document");
}

void KMAWeatherJsonClient::key(String key) {
  currentKey = String(key);
}

void KMAWeatherJsonClient::value(String value) {
  if (currentKey == "resultMsg") {
    resultMsg = value;
  }
  if (currentKey == "category") {
    category = value;
  }
  if (currentKey == "fcstDate") {
    fcstDate = value;
  }
  if (currentKey == "fcstTime") {
    fcstTime = value;
  }
  if (currentKey == "fcstValue") {
    fcstValue = value;
  }
  if (currentKey == "totalCount") {
    totalCount = value.toInt();
  }
}

void KMAWeatherJsonClient::startArray() {
  Serial.println("Start Array...");
  isArray = true;
  currentParent = currentKey;
}

void KMAWeatherJsonClient::endArray() {
  isArray = false;
  
}


void KMAWeatherJsonClient::startObject() {
  Serial.println(">>Start Object ... parent: "+ currentParent);
  if(!isArray) currentParent = currentKey;
}

void KMAWeatherJsonClient::endObject() {
    Serial.println(category + ": " + fcstValue);
    
    Serial.println(">>currentParent: " + currentParent);
    if(String("item").equals(currentParent)){
      time_t fcstDateTime = MakeTime(fcstDate, fcstTime);
      time_t tomorrow = this->baseDateTime + SECS_PER_DAY;
      
      if(this->baseDate.equals(fcstDate)){ //Today
        if(String("POP").equals(category)){//강수확률
          fcstToday[IndexOfForcastSpace(fcstDate, fcstTime)].fcstTime = fcstTime;
          fcstToday[IndexOfForcastSpace(fcstDate, fcstTime)].pop = fcstValue.toInt();
        } else if(String("PTY").equals(category)){//강수형태
          fcstToday[IndexOfForcastSpace(fcstDate, fcstTime)].pty = fcstValue.toInt();
        } else if(String("REH").equals(category)){//습도
          fcstToday[IndexOfForcastSpace(fcstDate, fcstTime)].reh = fcstValue.toInt();
        } else if(String("SKY").equals(category)){//하늘상태
          fcstToday[IndexOfForcastSpace(fcstDate, fcstTime)].sky = fcstValue.toInt();
        } else if(String("TMN").equals(category)){//일초저기온
          tempMaxMin[0].tmn = fcstValue.toFloat();
          //Serial.println(">>TMN: " + String(tempMaxMin[0].tmn));
        } else if(String("TMX").equals(category)){//일최고기온
          tempMaxMin[0].tmx = fcstValue.toFloat();
        } else if(String("T3H").equals(category)){//3시간기온
           fcstToday[IndexOfForcastSpace(fcstDate, fcstTime)].t3h = fcstValue.toFloat();
        } 
  
      } else if( day(fcstDateTime) == day(tomorrow)){ //Tomorrow
        if(String("POP").equals(category)){//강수확률
          fcstTomorrow[IndexOfForcastSpace(fcstDate, fcstTime)].fcstTime = fcstTime;
          fcstTomorrow[IndexOfForcastSpace(fcstDate, fcstTime)].pop = fcstValue.toInt();
        } else if(String("PTY").equals(category)){//강수형태
          fcstTomorrow[IndexOfForcastSpace(fcstDate, fcstTime)].pty = fcstValue.toInt();
        } else if(String("REH").equals(category)){//습도
          fcstTomorrow[IndexOfForcastSpace(fcstDate, fcstTime)].reh = fcstValue.toInt();
        } else if(String("SKY").equals(category)){//하늘상태
          fcstTomorrow[IndexOfForcastSpace(fcstDate, fcstTime)].sky = fcstValue.toInt();
        } else if(String("TMN").equals(category)){//일초저기온
          tempMaxMin[1].tmn = fcstValue.toFloat();
        } else if(String("TMX").equals(category)){//일최고기온
          tempMaxMin[1].tmx = fcstValue.toFloat();
        } else if(String("T3H").equals(category)){//3시간기온
          fcstTomorrow[IndexOfForcastSpace(fcstDate, fcstTime)].t3h = fcstValue.toFloat();
        } 
       
      }
    }
          
    if(!isArray) currentParent = "";
}

void KMAWeatherJsonClient::endDocument() {

}

String KMAWeatherJsonClient::getMeteoconIcon(String iconText) {
  if (iconText == "chanceflurries") return "F";
  if (iconText == "chancerain") return "Q";
  if (iconText == "chancesleet") return "W";
  if (iconText == "chancesnow") return "V";
  if (iconText == "chancetstorms") return "O";
  if (iconText == "clear") return "B";
  if (iconText == "cloudy") return "Y";
  if (iconText == "flurries") return "F";
  if (iconText == "fog") return "M";
  if (iconText == "hazy") return "E";
  if (iconText == "mostlycloudy") return "Y";
  if (iconText == "mostlysunny") return "H";
  if (iconText == "partlycloudy") return "H";
  if (iconText == "partlysunny") return "J";
  if (iconText == "sleet") return "W";
  if (iconText == "rain") return "R";
  if (iconText == "snow") return "W";
  if (iconText == "sunny") return "B";
  if (iconText == "tstorms") return "0";

  if (iconText == "nt_chanceflurries") return "F";
  if (iconText == "nt_chancerain") return "7";
  if (iconText == "nt_chancesleet") return "#";
  if (iconText == "nt_chancesnow") return "#";
  if (iconText == "nt_chancetstorms") return "&";
  if (iconText == "nt_clear") return "2";
  if (iconText == "nt_cloudy") return "Y";
  if (iconText == "nt_flurries") return "9";
  if (iconText == "nt_fog") return "M";
  if (iconText == "nt_hazy") return "E";
  if (iconText == "nt_mostlycloudy") return "5";
  if (iconText == "nt_mostlysunny") return "3";
  if (iconText == "nt_partlycloudy") return "4";
  if (iconText == "nt_partlysunny") return "4";
  if (iconText == "nt_sleet") return "9";
  if (iconText == "nt_rain") return "8";
  if (iconText == "nt_snow") return "#";
  if (iconText == "nt_sunny") return "2";
  if (iconText == "nt_tstorms") return "&";

  return ")";
}

//sky:하늘상태(맑음:1, 구름조금:2, 구름많음:3, 흐림:4), pty:강수형태(없음:0, 비:1, 비/눈:2, 눈:3)
String KMAWeatherJsonClient::getWeatherIcon(int sky, int pty, int hour){
  String iconText;
  switch(sky){ //하늘상태
    case 1: //맑음
      iconText = "sunny";
      break;
    case 2: //구름조금
      iconText = "partlycloudy";
      break;
    case 3: //구름많음
      iconText = "mostlycloudy";
      break;
    case 4: {//흐림
      switch(pty){ //강수형태
        case 0: //없음
          iconText = "hazy";
          break;
        case 1: //비
          iconText = "rain";
          break;
        case 2: //비/눈(진눈깨비)
          iconText = "sleet";
          break;
        case 3: //눈
          iconText = "snow";
          break;
        default:
          iconText = ")"; //N/A
          break;
      }
    }
    break;
    default:
      iconText = ")"; //N/A
      break;
  }
  if(hour < 6 || hour >= 18) //before 6am or after 6 pm
    iconText = "nt_" + iconText;
  return getMeteoconIcon(iconText);
}

String KMAWeatherJsonClient::urlEncode(String str)
{
    String encodedString="";
    char c;
    char code0;
    char code1;
    char code2;
    for (int i =0; i < str.length(); i++){
      c=str.charAt(i);
      if (c == ' '){
        encodedString+= '+';
      } else if (isalnum(c)){
        encodedString+=c;
      } else{
        code1=(c & 0xf)+'0';
        if ((c & 0xf) >9){
            code1=(c & 0xf) - 10 + 'A';
        }
        c=(c>>4)&0xf;
        code0=c+'0';
        if (c > 9){
            code0=c - 10 + 'A';
        }
        code2='\0';
        encodedString+='%';
        encodedString+=code0;
        encodedString+=code1;
        //encodedString+=code2;
      }
      yield();
    }
    return encodedString;
    
}

String KMAWeatherJsonClient::urlDecode(String str)
{
    
    String encodedString="";
    char c;
    char code0;
    char code1;
    for (int i =0; i < str.length(); i++){
        c=str.charAt(i);
      if (c == '+'){
        encodedString+=' ';  
      }else if (c == '%') {
        i++;
        code0=str.charAt(i);
        i++;
        code1=str.charAt(i);
        c = (h2int(code0) << 4) | h2int(code1);
        encodedString+=c;
      } else{
        
        encodedString+=c;  
      }
      
      yield();
    }
    
   return encodedString;
}

unsigned char KMAWeatherJsonClient::h2int(char c)
{
    if (c >= '0' && c <='9'){
        return((unsigned char)c - '0');
    }
    if (c >= 'a' && c <='f'){
        return((unsigned char)c - 'a' + 10);
    }
    if (c >= 'A' && c <='F'){
        return((unsigned char)c - 'A' + 10);
    }
    return(0);
}