dataFetcher.cpp

#include <iostream>
#include "dataFetcher.h"
#include "helper.h"
#include <json.hpp>
using json = nlohmann::json;

LocationDetails DataFetcher::GetLocationDetailsFromAreaName(const std::string& areaName, const WeatherProvider& provider)
{
	std::string queryString{"q={area}&limit=1&appid={apiKey}"};
	std::string url{"geo/1.0/direct"}; //Do not add ?
	url = provider.url_ + url;
	Helper::findAndReplaceAll(queryString, "{area}", areaName);
	Helper::findAndReplaceAll(queryString, "{apiKey}", provider.apiKey_);
	
	std::string result = Helper::GetRequest(queryString, url);
	//std::cout << result;
	auto j = json::parse(result);
    if (j.size() == 0)
    {
        throw std::runtime_error("Location not found!");
    }
	LocationDetails loc;
	loc.lat_ = j[0]["lat"];
	loc.lng_ = j[0]["lon"];
   
	loc.locationName_ = areaName;
	return loc;
}

WeatherInfo DataFetcher::GetWeatherFromLatLng(const LocationDetails& loc, const WeatherProvider& provider)
{ 
	//https://api.openweathermap.org/data/2.5/weather?lat={lat}&lon={lon}&appid={API key}
	std::string queryString{ "lat={lat}&lon={lon}&appid={API key}&units=metric" };
	std::string url{ "data/2.5/weather" }; //Do not add ?
	url = provider.url_ + url;
	Helper::findAndReplaceAll(queryString, "{lat}", std::to_string(loc.lat_));
	Helper::findAndReplaceAll(queryString, "{lon}", std::to_string(loc.lng_));
	Helper::findAndReplaceAll(queryString, "{API key}", provider.apiKey_);

	std::string result = Helper::GetRequest(queryString, url);
	//std::cout << result;
	auto j = json::parse(result);
	WeatherInfo info;
	info.temp_ = j["main"]["temp"];
	return info;
}