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#include "networkforecastsource.h"
#include "yahooweatherresponse.h"
#include "xoapweatherresponse.h"
#include <QUrl>
#include <QNetworkRequest>
#include <QNetworkReply>
#include <QDebug>
#include <QBuffer>
#include <QDomDocument>
#include <QDateTime>
#include <QTime>
#define CITY_NAME_HOST "xoap.weather.com"
#define CITY_NAME_TO_LOCATION_ID_URL "http://" CITY_NAME_HOST "/search/search"
#define CITY_NAME_TO_LOCATION_ID_PARAM "where"
#define FORECAST_HOST "weather.yahooapis.com"
#define FORECAST_URL "http://" FORECAST_HOST "/forecastrss"
#define FORECAST_LOCATION_PARAM "p"
#define FORECAST_UNIT_PARAM "u"
#define FORECAST_CELSIUS_UNIT "c"
#define YWEATHER_NS_URI "http://xml.weather.yahoo.com/ns/rss/1.0"
#define YWEATHER_NS_NAME "yweather"
static int getId()
{
static int id(0);
return ++id;
}
// LocationRequestManager
LocationRequestManager::LocationRequestManager(QObject *parent)
: QObject(parent)
{
connect(&m_network, SIGNAL(finished(QNetworkReply*)),
this, SLOT(receiveResponse(QNetworkReply*)));
}
int LocationRequestManager::addRequest(const QString &query)
{
if (m_requests.contains(query))
return m_requests[query];
QUrl url(CITY_NAME_TO_LOCATION_ID_URL);
url.addQueryItem(CITY_NAME_TO_LOCATION_ID_PARAM, query);
m_network.get(QNetworkRequest(url));
int result = getId();
m_requests[query] = result;
return result;
}
QString LocationRequestManager::readResponse(const QString &query, QNetworkReply *reply)
{
if (reply->error() != QNetworkReply::NoError) {
qWarning() << "location id query error: " << query;
return QString();
}
QDomDocument doc;
if (!doc.setContent(reply)) {
qWarning() << "location id parse error: " << query;
return QString();
}
XoapWeatherResponse reader;
reader.read(doc.documentElement());
if (reader.items().count() == 0) {
qWarning() << "empty location id response: " << query;
return QString();
}
return reader.items()[0].id();
}
void LocationRequestManager::receiveResponse(QNetworkReply *reply)
{
const QString query = reply->request().url().queryItemValue(CITY_NAME_TO_LOCATION_ID_PARAM);
if (query.isNull() || !m_requests.contains(query)) {
qWarning() << "Unexpected location id query response. (query = " << query << ")";
return;
}
const int reqId = m_requests[query];
m_requests.remove(query);
QString locId = readResponse(query, reply);
if (locId.isEmpty())
emit locationIdQueryError(reqId, query);
else
emit newLocationId(reqId, locId);
}
// ForecastRequestmanager
ForecastRequestmanager::ForecastRequestmanager(QObject *parent)
: QObject(parent)
{
connect(&m_network, SIGNAL(finished(QNetworkReply*)),
this, SLOT(receiveResponse(QNetworkReply*)));
}
int ForecastRequestmanager::addRequest(const QString &locId)
{
if (m_requests.contains(locId))
return m_requests[locId][0];
int result = getId();
doAddRequest(result, locId);
return result;
}
void ForecastRequestmanager::addRequest(int reqId, const QString &locId)
{
if (m_requests.contains(locId)) {
m_requests[locId].append(reqId);
return;
}
doAddRequest(reqId, locId);
}
void ForecastRequestmanager::doAddRequest(int reqId, const QString &locId)
{
QUrl url(FORECAST_URL);
url.addQueryItem(FORECAST_LOCATION_PARAM, locId);
url.addQueryItem(FORECAST_UNIT_PARAM, FORECAST_CELSIUS_UNIT);
m_network.get(QNetworkRequest (url));
QList<int> list;
list.append(reqId);
m_requests[locId] = list;
}
YahooWeatherResponse *ForecastRequestmanager::readResponse(const QString &locId,
QNetworkReply *reply)
{
if (reply->error() != QNetworkReply::NoError) {
qWarning() << "forecast query error: " << locId;
return 0;
}
QDomDocument doc;
if (!doc.setContent(reply)) {
qWarning() << "forecast parse error: " << locId;
return 0;
}
bool ok = doc.documentElement().childNodes().count() > 0
&& doc.documentElement().childNodes().at(0).isElement();
if (ok) {
QDomElement element = doc.documentElement().childNodes().at(0).toElement();
ok = element.elementsByTagName("lastBuildDate").count() == 1;
}
if (!ok) {
qWarning() << "invalid forecast response: " << locId;
return 0;
}
return new YahooWeatherResponse(locId, doc.documentElement());
}
void ForecastRequestmanager::receiveResponse(QNetworkReply *reply)
{
const QString locId = reply->request().url().queryItemValue(FORECAST_LOCATION_PARAM);
if (locId.isNull() || !m_requests.contains(locId)) {
qWarning() << "Unexpected forecast query response. (locId = " << locId << ")";
return;
}
const QList<int> list = m_requests[locId];
m_requests.remove(locId);
YahooWeatherResponse *result = readResponse(locId, reply);
if (result)
foreach (int reqId, list) {
emit newForecastResponse(reqId, result);
}
else
foreach (int reqId, list)
emit forecastResponseError(reqId);
}
// NetworkForecastSource
NetworkForecastSource::NetworkForecastSource(QObject *parent)
: ForecastSource(parent)
{
connect(&m_locationManager, SIGNAL(newLocationId(int, QString)),
&m_forecastManager, SLOT(addRequest(int, QString)));
connect(&m_locationManager, SIGNAL(locationIdQueryError(int, QString)),
&m_forecastManager, SLOT(addRequest(int, QString)));
connect(&m_forecastManager, SIGNAL(forecastResponseError(int)),
this, SLOT(forecastResponseError(int)));
connect(&m_forecastManager, SIGNAL(newForecastResponse(int, YahooWeatherResponse*)),
this, SLOT(newForecastResponse(int, YahooWeatherResponse*)));
}
NetworkForecastSource::~NetworkForecastSource()
{
}
int NetworkForecastSource::getForecast(const QString &key, bool locationId)
{
if (locationId)
return m_forecastManager.addRequest(key);
else
return m_locationManager.addRequest(key);
}
void NetworkForecastSource::newForecastResponse(int reqId, YahooWeatherResponse *forecast)
{
forecast->print();
emit forecastReceived(reqId, ForecastData(forecast));
}
void NetworkForecastSource::forecastResponseError(int reqId)
{
emit forecastReceived(reqId, ForecastData(0));
}
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