.pragma library
/*
 * Copyright (C) 2013 Canonical Ltd
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 3 as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 * Authored by: Raúl Yeguas <neokore@gmail.com>
 *              Martin Borho <martin@borho.net>
 *              Andrew Starr-Bochicchio <a.starr.b@gmail.com>
 */

/**
*  Version of the response data format.
*  Increase this number to force a refresh.
*/
var RESPONSE_DATA_VERSION = 20200101;

/**
* Helper functions
*/
function debug(obj) {
    print(JSON.stringify(obj))
}
//
function calcWindDir(degrees) {
    var direction =  "?";
    if(degrees >=0 && degrees <= 30){
        direction = "N";
    } else if(degrees >30 && degrees <= 60){
        direction = "NE";
    } else if(degrees >60 && degrees <= 120){
        direction = "E";
    } else if(degrees >120 && degrees <= 150){
        direction = "SE";
    } else if(degrees >150 && degrees <= 210){
        direction = "S";
    } else if(degrees >210 && degrees <= 240){
        direction = "SW";
    } else if(degrees >240 && degrees <= 300){
        direction = "W";
    } else if(degrees >300 && degrees <= 330){
        direction = "NW";
    } else if(degrees >330 && degrees <= 360){
        direction = "N";
    }
    return direction;
}

//
function getLocationTime(tstamp) {
    var locTime = new Date(tstamp);
    return {
        year: locTime.getUTCFullYear(),
        month: locTime.getUTCMonth(),
        date: locTime.getUTCDate(),
        hours: locTime.getUTCHours(),
        minutes: locTime.getUTCMinutes()
    }
}
// Serialize a JavaScript object to URL parameters
// E.g. {param1: value1, param2: value2} to "param1=value&param2=value"
// TODO: it'd be nice to make it work with either passing a single object
// or several at once
function parameterize(obj) {
  var str = [];
  for(var param in obj) {
     str.push(encodeURIComponent(param) + "=" + encodeURIComponent(obj[param]));
  }
  return str.join("&");
}


// Remove just the API key
function trimAPIKey(data) {
    if (data !== undefined) {
      var owm = data.indexOf("APPID=");
      var twc = data.indexOf("apiKey=");

      // Key length is 32 char for both APIs
      var keySize = 32;

      if (owm > -1) {
          var replace = data.substr(owm+6, keySize);
          data = data.replace(replace,"")
      } else if (twc > -1) {
          var replace = data.substr(twc+7, keySize);
          data = data.replace(replace,"")
      }
    }

    return data;
}

var GeoipApi = (function() {
    var _baseUrl = "http://geoip.ubuntu.com/lookup";
    return {
        getLatLong: function(params, apiCaller, onSuccess, onError) {
            var request = { type: "geolookup",url: _baseUrl},
                resultHandler = (function(request, xmlDoc) {
                    var coords = {},
                        childNodes = xmlDoc.childNodes;
                    for(var i=0;i<childNodes.length;i++) {
                        if(childNodes[i].nodeName === "Latitude") {
                            coords.lat = childNodes[i].firstChild.nodeValue;
                        } else if(childNodes[i].nodeName === "Longitude") {
                            coords.lon = childNodes[i].firstChild.nodeValue;
                        }
                    }
                    onSuccess(coords);
                }),
                retryHandler = (function(err) {
                    console.log("geolookup retry of "+err.request.url);
                    apiCaller(request, resultHandler, onError);
                });
            apiCaller(request, resultHandler, retryHandler);
        }
    }
})();

var GeonamesApi = (function() {
    /**
      provides neccessary methods for requesting and preparing data from Geonames.org
    */
    var _baseUrl = "http://api.geonames.org/";
    var _username = "uweatherdev"
    var _addParams = "&maxRows=25&featureClass=P"
    //
    function _buildSearchResult(request, data) {
        var searchResult = { locations: [], request: request };
        if(data.geonames) {
            data.geonames.forEach(function(r) {
               searchResult.locations.push({
                    name: r.name,
                    coord: {lat: r.lat, lon: r.lng},
                    country: r.countryCode,
                    countryName: r.countryName,
                    timezone: r.timezone,
                    adminName1: r.adminName1,
                    adminName2: r.adminName2,
                    adminName3: r.adminName3,
                    services: {
                        "geonames": r.geonameId
                    }
                });
            })
        }
        return searchResult;
    }
    //
    return {
        //
        search: function(mode, params, apiCaller, onSuccess, onError) {
            var request,
                retryHandler = (function(err) {
                        console.log("search retry of "+err.request.url);
                        apiCaller(request, searchResponseHandler, onError);
                }),
                searchResponseHandler = function(request, data) {
                    onSuccess(_buildSearchResult(request, data));
                };
            if(mode === "point") {
                request = { type: "search",
                            url: _baseUrl+ "findNearbyPlaceNameJSON?style=full&username="+encodeURIComponent(_username)
                            +"&lat="+encodeURIComponent(params.coords.lat)+"&lng="+encodeURIComponent(params.coords.lon)
                            +"&lang="+encodeURIComponent(params.lang)
                            +_addParams}
            } else {
                request = { type: "search",
                            url: _baseUrl+ "searchJSON?style=full&username="+encodeURIComponent(_username)
                                    +"&name_startsWith="+encodeURIComponent(params.name)
                                    +"&lang="+encodeURIComponent(params.lang)
                                    +_addParams}
            }
            apiCaller(request, searchResponseHandler, retryHandler);
        }
    }

})();

var OpenWeatherMapApi = (function() {
    /**
      provides neccessary methods for requesting and preparing data from OpenWeatherMap.org
    */
    var _baseUrl = "http://api.openweathermap.org/data/2.5/";
    //
    var _serviceName = "openweathermap";
    //
    //see: https://openweathermap.org/weather-conditions
    var _icon_map = {
        "01d": "sun",         //DarkSky clear-day
        "01n": "moon",        //DarkSky clear-night
        "02d": "few_cloud_sun",   //DarkSky partly-cloudy-day
        "02n": "few_cloud_moon",  //DarkSky partly-cloudy-night
        "03d": "scattered_cloud",   //DarkSky partly-cloudy-day
        "03n": "scattered_cloud",  //DarkSky partly-cloudy-night
        "04d": "cloud",       //DarkSky cloudy
        "04n": "cloud",       //DarkSky cloudy
        "09d": "showers",    //DarkSky rain
        "09n": "showers",    //DarkSky rain
        "10d": "rain",        //DarkSky rain
        "10n": "rain",        //DarkSky rain
        "11d": "thunder",
        "11n": "thunder",
        "13d": "snow",  //DarkSky snow
        "13n": "snow",  //DarkSky snow
        "50d": "fog",          //DarkSky fog
        "50n": "fog"           //DarkSky fog
    }

    //DarkSky sleet
    //DarkSky wind  weather-chance-of-wind

    // used for current data
    // no rain data provided for current weather
    function _buildDataPoint(date, data) {
        var result = {
            timestamp: data.dt,
            date: date,
            metric: {
                temp: data.main.temp,
                feels_like: data.main.feels_like,
                windSpeed: data.wind.speed,
            },
            humidity: data.main.humidity,
            pressure: data.main.pressure,
            windDeg: data.wind.deg,
            windDir: calcWindDir(data.wind.deg),
            icon: _icon_map[data.weather[0].icon],
            condition: data.weather[0].description
        };
        if(data.id !== undefined) {
            result["service"] = _serviceName;
            result["service_id"] =  data.id;
        }
        return result;
    }
    // used for hourly data
    function _buildHourlyFormat(date, data) {
        var result = {
            timestamp: data.dt,
            date: date,
            metric: {
                temp: data.main.temp,
                // feels_like: data.main.feels_like,
                // windSpeed: calcKmh(data.wind.speed),
                rain: data.rain !== undefined ? data.rain["3h"] : 0, //undefined eqals to no rain/no snow expected
                snow: data.snow !== undefined ? data.snow["3h"] : 0
            },
            // humidity: data.main.humidity,
            // pressure: data.main.pressure,
            // windDeg: data.wind.deg,
            // windDir: calcWindDir(data.wind.deg),
            icon: _icon_map[data.weather[0].icon],
            condition: data.weather[0].description
        };
        if(data.id !== undefined) {
            result["service"] = _serviceName;
            result["service_id"] =  data.id;
        }
        return result;
    }
    // used for daily forecast data
    function _buildDayFormat(date, data) {
        var result = {
            date: date,
            timestamp: data.dt,
            metric: {
                tempMin: data.temp.min,
                tempMax: data.temp.max,
                windSpeed: data.speed,
            },
            //undefined eqals to no rain/no snow expected
            rain: data.rain !== undefined ? data.rain : 0,
            snow: data.snow !== undefined ? data.snow : 0,
            pressure: data.pressure,
            humidity: data.humidity,
            icon: _icon_map[data.weather[0].icon],
            condition: data.weather[0].description,
            windDeg: data.deg,
            windDir: calcWindDir(data.deg),
            hourly: []
        }
        return result;
    }
    //
    function formatResult(data, location) {
        var tmpResult = {},
            result = [],
            day=null,
            offset=(location.timezone && location.timezone.gmtOffset) ? location.timezone.gmtOffset*60*60*1000: 0,
            localNow = getLocationTime(new Date().getTime()+offset),
            todayDate;
        print("["+location.name+"] "+JSON.stringify(localNow))
        // add openweathermap id for faster responses
        if(location.services && !location.services[_serviceName] && data["current"].id) {
            location.services[_serviceName] = data["current"].id
        }
        //
        data["daily"]["list"].forEach(function(dayData) {
            var date = getLocationTime(((dayData.dt*1000)-1000)+offset), // minus 1 sec to handle +/-12 TZ
                day = date.year+"-"+date.month+"-"+date.date;
            if(!todayDate) {
                if(localNow.year+"-"+localNow.month+"-"+localNow.date > day) {
                    // skip "yesterday"
                    return;
                }
                todayDate = date;
            }
            tmpResult[day] = _buildDayFormat(date, dayData);
        })
        //
        var today = todayDate.year+"-"+todayDate.month+"-"+todayDate.date
        tmpResult[today]["current"] = _buildDataPoint(todayDate, data["current"]);
        if(data["forecast"] !== undefined) {
            data["forecast"]["list"].forEach(function(hourData) {
                var dateData = getLocationTime((hourData.dt*1000)+offset),
                    day = dateData.year+"-"+dateData.month+"-"+dateData.date;
                if(tmpResult[day]) {
                    tmpResult[day]["hourly"].push(_buildHourlyFormat(dateData, hourData));
                }
            })
        }
        //
        for(var d in tmpResult) {
            result.push(tmpResult[d]);
        }
        return result;
    }
    //
    function _getUrls(params) {
        var urls = {
                current: "",
                daily: "",
                forecast: ""
            },
            latLongParams = "&lat="+encodeURIComponent(params.location.coord.lat)
                + "&lon="+encodeURIComponent(params.location.coord.lon);
        if(params.location.services && params.location.services[_serviceName]) {
            urls.current = _baseUrl + "weather?units="+params.units+"&id="+params.location.services[_serviceName]+"&lang="+Qt.locale().name.split("_")[0];
            urls.daily = _baseUrl + "forecast/daily?id="+params.location.services[_serviceName]+"&cnt=10&units="+params.units+"&lang="+Qt.locale().name.split("_")[0];
            urls.forecast = _baseUrl + "forecast?id="+params.location.services[_serviceName]+"&units="+params.units+"&lang="+Qt.locale().name.split("_")[0];

        } else if (params.location.coord) {
            urls.current = _baseUrl + "weather?units="+params.units+latLongParams+"&lang="+Qt.locale().name.split("_")[0];
            urls.daily = _baseUrl+"forecast/daily?cnt=10&units="+params.units+latLongParams+"&lang="+Qt.locale().name.split("_")[0];
            urls.forecast = _baseUrl+"forecast?units="+params.units+latLongParams+"&lang="+Qt.locale().name.split("_")[0];
        }
        urls.current += "&APPID="+params.owm_api_key;
        urls.daily += "&APPID="+params.owm_api_key;
        urls.forecast += "&APPID="+params.owm_api_key;

        return urls;
    }
    //
    return {
        //
        getData: function(params, apiCaller, onSuccess, onError) {
            var urls = _getUrls(params),
                handlerMap = {
                current: { type: "current",url: urls.current},
                daily: { type: "daily",url: urls.daily},
                forecast: { type: "forecast", url: urls.forecast}},
            response = {
                location: params.location,
                db: (params.db) ? params.db : null,
                format: RESPONSE_DATA_VERSION
            },
            respData = {},
            addDataToResponse = (function(request, data) {
                var formattedResult;
                respData[request.type] = data;
                if(respData["current"] !== undefined
                        && respData["forecast"] !== undefined
                            && respData["daily"] !== undefined) {
                    response["data"] = formatResult(respData, params.location)
                    onSuccess(response);
                }
            }),
            onErrorHandler = (function(err) {
                onError(err);
            }),
            retryHandler = (function(err) {
                console.log("retry of "+trimAPIKey(err.request.url));
                var retryFunc = handlerMap[err.request.type];
                apiCaller(retryFunc, addDataToResponse, onErrorHandler);
            });
            //
            apiCaller(handlerMap.current, addDataToResponse, retryHandler);
            apiCaller(handlerMap.forecast, addDataToResponse, retryHandler);
            apiCaller(handlerMap.daily, addDataToResponse, retryHandler);
        }
    }

})();

// var WeatherChannelApi = (function() {
//     /**
//       provides neccessary methods for requesting and preparing data from OpenWeatherMap.org
//     */
//     var _baseUrl = "https://api.weather.com/";
//     //
//     var _serviceName = "weatherchannel";
//     //
//     // see http://s.imwx.com/v.20131006.223722/img/wxicon/72/([0-9]+).png
//     var _iconMap = {
//         "0": "thunder", // ??
//         "1": "thunder", // ??
//         "2": "thunder", // ??
//         "3": "thunder", // ??
//         "4": "thunder", //T-Storms
//         "5": "snow_rain", //Rain / Snow
//         "6": "snow_rain", // ??
//         "7": "snow_rain", //Wintry Mix
//         "8": "scattered", //Freezing Drizzle
//         "9": "scattered", //Drizzle
//         "10": "rain", // ??
//         "11": "rain", //Showers
//         "12": "rain", //Rain
//         "13": "snow_shower", // ??
//         "14": "snow_shower", //Snow shower/Light snow
//         "15": "snow_shower", //
//         "16": "snow_shower", //Snow
//         "17": "thunder", // Hail??
//         "18": "snow_rain", // Rain / Snow ??
//         "19": "fog", //Fog ??
//         "20": "fog", //Fog
//         "21": "fog", //Haze
//         "22": "fog", // ??
//         "23": "fog", // Wind ??
//         "24": "overcast", //Partly Cloudy / Wind
//         "25": "overcast", // ??
//         "26": "overcast",//Cloudy
//         "27": "cloud_moon",//Mostly Cloudy
//         "28": "cloud_sun", //Mostly Cloudy
//         "29": "cloud_moon", //Partly Cloudy
//         "30": "cloud_sun", //Partly Cloudy
//         "31": "moon", //Clear
//         "32": "sun", //Sunny
//         "33": "cloud_moon", //Mostly Clear
//         "34": "cloud_sun", //Mostly Sunny
//         "35": "snow_rain", // ??
//         "36": "sun", //Sunny
//         "37": "thunder", //Isolated T-Storms
//         "38": "thunder", //Scattered T-Storms
//         "39": "scattered", //Scattered Showers
//         "40": "rain", // ??
//         "41": "snow", //Scattered Snow Showers
//         "42": "snow_shower", // ??
//         "43": "snow_shower", // ??
//         "44": "fog", // ??
//         "45": "scattered", // ??
//         "46": "snow_shower", //Snow Showers Early
//         "47": "thunder" //Isolated T-Storms
//     };
//     //
//     function _buildDataPoint(date, dataObj) {
//         var partData = dataObj["metric"] || dataObj;
//         var data = dataObj["observation"] || dataObj,
//             result = {
//                 timestamp: data.fcst_valid,
//                 date: date,
//                 metric: {
//                     temp: partData.temp,
//                     tempFeels: partData.feels_like,
//                     windSpeed: partData.wspd
//                 },
//                 imperial: {
//                     temp: calcFahrenheit(partData.temp),
//                     tempFeels: calcFahrenheit(partData.feels_like),
//                     windSpeed: convertKmhToMph(partData.wspd)
//                 },
//                 precipType: (data.precip_type !== undefined) ? data.precip_type : null,
//                 propPrecip: (data.pop !== undefined) ? data.pop : null,
//                 humidity: partData.rh,
//                 pressure: partData.mslp,
//                 windDeg: data.wdir,
//                 windDir: data.wdir_cardinal,
//                 icon: _iconMap[data.icon_code],
//                 condition: data.phrase_32char,
//                 uv: data.uv_index
//         };
//
//         if (_iconMap[data.icon_code] === undefined) {
//             print("ICON MISSING POINT: " + data.icon_code + " " + result.condition)
//         }
//
//         return result;
//     }
//     //
//     function _buildDayFormat(date, data, now) {
//         var partData = (now > data.fcst_valid || data.day === undefined) ? data.night : data.day,
//             result = {
//             date: date,
//             timestamp: data.fcst_valid,
//             metric: {
//                 tempMin: data.min_temp,
//                 tempMax: data.max_temp !== null ? data.max_temp : undefined,
//                 windSpeed: partData.wspd
//             },
//             imperial: {
//                 tempMin: calcFahrenheit(data.min_temp),
//                 tempMax: data.max_temp !== null && data.max_temp !== undefined ? calcFahrenheit(data.max_temp) : undefined,
//                 windSpeed: convertKmhToMph(partData.wspd)
//             },
//             precipType: partData.precip_type,
//             propPrecip: partData.pop,
//             pressure: null,
//             humidity: partData.rh,
//             icon: _iconMap[partData.icon_code],
//             condition: partData.phrase_32char,
//             windDeg: partData.wdir,
//             windDir: partData.wdir_cardinal,
//             uv: partData.uv_index,
//             hourly: []
//         }
//
//         if (_iconMap[partData.icon_code] === undefined) {
//             print("ICON MISSING  DAY: " + partData.icon_code + " " + result.condition)
//         }
//
//         return result;
//     }
//     //
//     function formatResult(combinedData, location) {
//         var tmpResult = {}, result = [],
//             day=null, todayDate,
//             offset=(location.timezone && location.timezone.gmtOffset) ? location.timezone.gmtOffset*60*60*1000: 0,
//             now = new Date().getTime(),
//             nowMs = parseInt(now/1000),
//             localNow = getLocationTime(now+offset),
//             data = {
//                 "location": combinedData["current"]["metadata"],
//                 "daily": combinedData["daily"]["forecasts"],
//                 "forecast": combinedData["forecast"]["forecasts"],
//                 "current": combinedData["current"]["observation"],
//             };
//         print("["+location.name+"] "+JSON.stringify(localNow));
//         // add openweathermap id for faster responses
//         if(location.services && !location.services[_serviceName] && data["location"].key) {
//             location.services[_serviceName] = data["location"].key
//         }
//         // only 5 days of forecast for TWC
//         for(var x=0; x<5; x++) {
//             var dayData = data["daily"][x],
//                 date = getLocationTime(((dayData.fcst_valid * 1000) - 1000) + offset);  // minus 1 sec to handle +/-12 TZ
//
//             // Sun{rise,set} is in ISOString format so use getTime() to convert
//             var sunrise = new Date(dayData.sunrise).getTime(),
//                 sunset = new Date(dayData.sunset).getTime();
//             day = date.year+"-"+date.month+"-"+date.date;
//
//             if (!todayDate) {
//                 if (localNow.year + "-" + localNow.month + "-" + localNow.date > day) {
//                     // skip "yesterday"
//                     continue;
//                 }
//
//                 todayDate = date;
//             }
//
//             tmpResult[day] = _buildDayFormat(date, dayData, nowMs);
//
//             var timezoneOffset = new Date().getTimezoneOffset();
//             var timesOffset = (location.timezone && location.timezone.dstOffset !== undefined) ? (location.timezone.dstOffset*60 + timezoneOffset)*60*1000: 0
//
//             sunrise = new Date(sunrise + timesOffset);
//             sunset = new Date(sunset + timesOffset);
//
//             var options = { timeZone: location.timezone.timeZoneId, timeZoneName: 'long' };
//             tmpResult[day].sunrise = sunrise.toLocaleTimeString(Qt.locale().name, options);
//             tmpResult[day].sunset = sunset.toLocaleTimeString(Qt.locale().name, options);
//         }
//         //
//         if(data["forecast"] !== undefined) {
//             data["forecast"].forEach(function(hourData) {
//                 var dateData = getLocationTime((hourData.fcst_valid * 1000) + offset),
//                     day = dateData.year+"-"+dateData.month+"-"+dateData.date;
//
//                 if(tmpResult[day]) {
//                     tmpResult[day]["hourly"].push(_buildDataPoint(dateData, hourData));
//                 }
//             })
//         }
//         //
//         if(data["current"]) {
//             var today = todayDate.year+"-"+todayDate.month+"-"+todayDate.date;
//             tmpResult[today]["current"] = _buildDataPoint(todayDate, data["current"]);
//             // if the icon is missing, use the first from the hourly forecast
//             if(!tmpResult[today]["current"].icon && tmpResult[today]["hourly"] && tmpResult[today]["hourly"].length > 0) {
//                 tmpResult[today]["current"].icon = tmpResult[today]["hourly"][0].icon;
//             }
//             // if condition text is missing, use the condition from the first hourly forecast
//             if((tmpResult[today]["current"].condition === "-" || tmpResult[today]["current"].condition === undefined)
//                 && (tmpResult[today]["hourly"] && tmpResult[today]["hourly"].length > 0)) {
//                     tmpResult[today]["current"].condition = tmpResult[today]["hourly"][0].condition;
//             }
//         }
//         //
//         for(var d in tmpResult) {
//             result.push(tmpResult[d]);
//         }
//         return result;
//     }
//     //
//     function _getUrls(params) {
//         var baseParams = {
//             units: (params.units === "metric") ? "m" : "e",
//             language: Qt.locale().name.replace("_","-"),
//             apiKey: params.twc_api_key,
//         };
//         var commands = {
//             "geocode": "v1/geocode/",
//         };
//         var urls = {
//             current: "",
//             daily: "",
//             hourly: "",
//         };
//
//         // FIXME: only use coords for now and not location codes (UKXX0085)
//         if (params.location.coord) {
//             var coord = {
//                 lat: params.location.coord.lat,
//                 lng: params.location.coord.lon
//             };
//
//             urls.current = _baseUrl + commands["geocode"] +
//                     coord.lat + "/" + coord.lng +
//                     "/observations/current.json?" +
//                     parameterize(baseParams);
//             urls.daily = _baseUrl + commands["geocode"] +
//                     coord.lat + "/" + coord.lng +
//                     "/forecast/daily/5day.json?" +
//                     parameterize(baseParams);
//             urls.hourly = _baseUrl + commands["geocode"] +
//                     coord.lat + "/" + coord.lng +
//                     "/forecast/hourly/48hour.json?" +
//                     parameterize(baseParams);
//         }
//
//         return urls;
//     }
//     //
//     return {
//         getData: function(params, apiCaller, onSuccess, onError) {
//             var urls = _getUrls(params),
//                 handlerMap = {
//                 current: {
//                     type: "current",
//                     url: urls.current
//                 },
//                 daily: {
//                     type: "daily",
//                     url: urls.daily
//                 },
//                 forecast: {
//                     type: "forecast",
//                     url: urls.hourly
//                 }
//             },
//             response = {
//                 location: params.location,
//                 db: (params.db) ? params.db : null,
//                 format: RESPONSE_DATA_VERSION
//             },
//             respData = {},
//             addDataToResponse = (function(request, data) {
//                 var formattedResult;
//                 respData[request.type] = data;
//
//                 if (respData["current"] !== undefined &&
//                         respData["forecast"] !== undefined &&
//                             respData["daily"] !== undefined) {
//
//                     response["data"] = formatResult(respData, params.location);
//                     onSuccess(response);
//                 }
//             }),
//             onErrorHandler = (function(err) {
//                 onError(err);
//             }),
//             retryHandler = (function(err) {
//                 console.log("retry of " + trimAPIKey(err.request.url));
//                 var retryFunc = handlerMap[err.request.type];
//
//                 apiCaller(retryFunc, addDataToResponse, onErrorHandler);
//             });
//
//             apiCaller(handlerMap.current, addDataToResponse, retryHandler);
//             apiCaller(handlerMap.forecast, addDataToResponse, retryHandler);
//             apiCaller(handlerMap.daily, addDataToResponse, retryHandler);
//         }
//     }
// })();

var WeatherApi = (function(_services) {
    /**
      proxy for requesting weather apis, the passed _services are providing the respective api endpoints
      and formatters to build a uniform response object
    */
    function _getService(name) {
        if(_services[name] !== undefined) {
            return _services[name];
        }
        return _services["openweathermap"];
    }
    //
    function _sendRequest(request, onSuccess, onError) {
        var xmlHttp = new XMLHttpRequest();
        if (xmlHttp) {
            // console.log("Sent request URL: " + trimAPIKey(request.url));
            xmlHttp.open('GET', request.url, true);
            xmlHttp.onreadystatechange = function () {
                try {
                    if (xmlHttp.readyState == 4) {
                        if(xmlHttp.status === 200) {
                            if(xmlHttp.responseXML) {
                                onSuccess(request, xmlHttp.responseXML.documentElement);
                            } else {
                                var json = JSON.parse(xmlHttp.responseText);
                                onSuccess(request,json);
                            }
                        } else {
                            onError({
                                msg: "wrong response http code, got "+xmlHttp.status,
                                request: request
                            });
                        }
                    }
                } catch (e) {
                    print("Exception: "+e)
                    onError({msg: "wrong response data format", request: request});
                }
            };
            xmlHttp.send(null);
        }
    }
    //
    return  {
        //
        geoLookup: function(params, onSuccess, onError) {
            var service = _getService('geoip'),
                geoNameService = _getService('geonames'),
                lookupHandler = function(data) {
                    print("Geolookup: "+JSON.stringify(data))
                    geoNameService.search("point", {coords:data}, _sendRequest, onSuccess, onError);
                };
            service.getLatLong(params, _sendRequest, lookupHandler, onError)
        },
        //
        search: function(mode, params, onSuccess, onError) {
            var service = _getService('geonames');
            service.search(mode, params, _sendRequest, onSuccess, onError);
        },
        //
        getLocationData: function(params, onSuccess, onError) {
            var service = _getService(params.service);
            service.getData(params, _sendRequest, onSuccess, onError);
        },
    }
})({
    "openweathermap": OpenWeatherMapApi,
    // "weatherchannel": OpenWeatherMapApi, // TODO: Remove this temporary fix
    //"weatherchannel": WeatherChannelApi,
    "geonames": GeonamesApi,
    "geoip": GeoipApi
});

var sendRequest = function(message, responseCallback) {
    // handles the response data
    var finished = function(result) {
        // print result to get data for test json files
        // print(JSON.stringify(result));
        //WorkerScript.sendMessage({
        responseCallback({
            action: message.action,
            result: result
        })
    }
    // handles errors
    var onError = function(err) {
        console.log(JSON.stringify(err, null, true));
        //WorkerScript.sendMessage({ 'error': err})
        responseCallback({ 'error': err})
    }
    // keep order of locations, sort results
    var sortDataResults = function(locA, locB) {
        return locA.db.id - locB.db.id;
    }
    // perform the api calls
    if(message.action === "searchByName") {
        WeatherApi.search("name", message.params, finished, onError);
    } else if(message.action === "searchByPoint"
              || message.action === "searchByUrl") {
        WeatherApi.search("point", message.params, finished, onError);
    } else if(message.action === "getGeoIp") {
        WeatherApi.geoLookup(message.params, finished, onError);
    } else if(message.action === "updateData") {
        var locLength = message.params.locations.length,
            locUpdated = 0,
            result = [],
            now = new Date().getTime();
        if(locLength > 0) {
            message.params.locations.forEach(function(loc) {
                var updatedHnd = function (newData, cached) {
                        locUpdated += 1;
                        if(cached === true) {
                            newData["save"] = false;
                        } else {
                            newData["save"] = true;
                            newData["updated"] =  new Date().getTime();
                        }
                        result.push(newData);
                        if(locUpdated === locLength) {
                            result.sort(sortDataResults);
                            finished(result);
                        }
                    },
                    params = {
                        location:loc.location,
                        db: loc.db,
                        units: 'metric',
                        service: message.params.service,
                        twc_api_key: message.params.twc_api_key,
                        owm_api_key: message.params.owm_api_key,
                        interval: message.params.interval
                    },
                    secsFromLastFetch = (now-loc.updated)/1000;
                if( message.params.force===true || loc.format !== RESPONSE_DATA_VERSION || secsFromLastFetch > params.interval){
                    // data older than 30min, location is new or data format is deprecated
                    WeatherApi.getLocationData(params, updatedHnd, onError);
                } else {
                    // console.log("["+loc.location.name+"] returning cached data, time from last fetch: "+secsFromLastFetch)
                    updatedHnd(loc, true);
                }
            })
        } else {
            finished(result);
        }
    }
}
