add find weather location by postcode

todo: add country

Signed-off-by: Thilo Graf <dbt@novatux.de>

include fix compile, to_string used from helpers

data/locale/deutsch.locale

@@ -1785,6 +1785,7 @@ menu.hint_volume_size Wählen Sie die Höhe der Lautstärkeanzeige
 menu.hint_weather_api_key Geben Sie den OpenWeather API Schlüssel ein. Eine leere Eingabe schaltet die Wetter-Unterstützung aus
 menu.hint_weather_enabled Schaltet die Wetter-Unterstützung (openweathermap.org) ein bzw. aus
 menu.hint_weather_location Wählen Sie eine Stadt in ihrer Nähe zur Anzeige der Wetterdaten aus
+menu.hint_weather_location_postcode Geben Sie ihre Postleitzahl zur Anzeige der Wetterdaten an
 menu.hint_webradio_setup Hier konfigurierte WebRadio-Kanäle finden Sie in der Kanalverwaltung.
 menu.hint_webradio_xml_auto Lädt automatisch alle WebRadio-Dateien aus %s/ und %s/
 menu.hint_webtv_setup Hier konfigurierte WebTV-Kanäle finden Sie in der Kanalverwaltung.
@@ -2884,6 +2885,7 @@ videomenu.zappingmode_hold Standbild
 weather.api_key Wetter API Schlüssel (OpenWeather)
 weather.enabled Wetter-Unterstützung
 weather.location Wetter-Standort
+weather.location_postcode Wetter-Standort per Postleitzahl
 webchannels.xml.add Hinzufügen
 webchannels.xml.del Entfernen
 webchannels.xml.enter Eintragen

data/locale/english.locale

@@ -1785,6 +1785,7 @@ menu.hint_volume_size Select volume indicator height
 menu.hint_weather_api_key Type your OpenWeather API key. An empty input disables Weather support
 menu.hint_weather_enabled Enable or disable Weather support (openweathermap.org)
 menu.hint_weather_location Select your weather location
+menu.hint_weather_location_postcode Select your weather location by postcode
 menu.hint_webradio_setup WebRadio channels configured here will be available in the standard channel lists.
 menu.hint_webradio_xml_auto Auto-load all existing WebRadio files from %s/ and %s/
 menu.hint_webtv_setup WebTV channels configured here will be available in the standard channel lists.
@@ -2884,6 +2885,7 @@ videomenu.zappingmode_hold Hold screen
 weather.api_key Weather API key (OpenWeather)
 weather.enabled Weather support
 weather.location Weather location
+weather.location_postcode Weather location by postcode
 webchannels.xml.add Add
 webchannels.xml.del Remove
 webchannels.xml.enter Enter

src/gui/weather.cpp

@@ -181,6 +181,45 @@ bool CWeather::GetWeatherDetails()
 	return false;
 }
 
+bool CWeather::FindCoords(int postcode, std::string country, int pc_len)
+{
+	std::string pcode = to_string(postcode);
+	unsigned int number_of_zeros = pc_len - pcode.length();
+	pcode.insert(0, number_of_zeros, '0');
+	std::string data = "http://api.openweathermap.org/geo/1.0/zip?zip=" + pcode + "," + country + "&appid=" + key;
+	JSONCPP_STRING answer;
+	JSONCPP_STRING formattedErrors;
+	Json::CharReaderBuilder builder;
+	Json::CharReader *reader = builder.newCharReader();
+	Json::Value DataValues;
+	answer.clear();
+
+	if (!getUrl(data, answer))
+	{
+		delete reader;
+		return false;
+	}
+
+	bool parsedSuccess = reader->parse(answer.c_str(), answer.c_str() + answer.size(), &DataValues, &formattedErrors);
+	delete reader;
+
+	if (!parsedSuccess)
+	{
+		printf("Failed to parse JSON\n");
+		printf("%s\n", formattedErrors.c_str());
+		return false;
+	}
+
+	if (DataValues["message"].asString() == "not found")
+		return false;
+
+	float lat = DataValues["lat"].asFloat();
+	float lon = DataValues["lon"].asFloat();
+	g_settings.weather_city = DataValues["name"].asString();
+	g_settings.weather_location = to_string(lat) + "," + to_string(lon);
+	return true;
+}
+
 void CWeather::show(int x, int y)
 {
 	checkUpdate();

src/gui/weather.h

@@ -90,6 +90,7 @@ class CWeather
 		~CWeather();
 		bool checkUpdate(bool forceUpdate = false);
 		void setCoords(std::string new_coords, std::string new_city = "Unknown");
+		bool FindCoords(int postcode, std::string country = "DE", int pc_len = 5);
 
 		// globals
 		std::string getCity()

src/gui/weather_setup.cpp

@@ -63,6 +63,10 @@ int CWeatherSetup::exec(CMenuTarget *parent, const std::string &actionKey)
 	{
 		return showSelectWeatherLocation();
 	}
+	else if (actionKey == "find_location")
+	{
+		return findLocation();
+	}
 
 	res = showWeatherSetup();
 
@@ -90,6 +94,10 @@ int CWeatherSetup::showWeatherSetup()
 	mf_wl->setHint(NEUTRINO_ICON_HINT_SETTINGS, LOCALE_MENU_HINT_WEATHER_LOCATION);
 	ms_oservices->addItem(mf_wl);
 
+	CMenuForwarder *mf_zip = new CMenuForwarder(LOCALE_WEATHER_LOCATION_POSTCODE, g_settings.weather_enabled, NULL, this, "find_location");
+	mf_zip->setHint(NEUTRINO_ICON_HINT_SETTINGS, LOCALE_MENU_HINT_WEATHER_LOCATION_POSTCODE);
+	ms_oservices->addItem(mf_zip);
+
 	int res = ms_oservices->exec(NULL, "");
 	selected = ms_oservices->getSelected();
 	delete ms_oservices;
@@ -146,6 +154,22 @@ int CWeatherSetup::showSelectWeatherLocation()
 	return res;
 }
 
+int CWeatherSetup::findLocation()
+{
+	int ret = menu_return::RETURN_REPAINT;
+	int postcode = 10178;
+	CIntInput zipcode(LOCALE_WEATHER_LOCATION_POSTCODE, &postcode, (unsigned int)5);
+	ret = zipcode.exec(NULL, "");
+	zipcode.hide();
+
+	if (CWeather::getInstance()->FindCoords(postcode))
+	{
+		CWeather::getInstance()->setCoords(g_settings.weather_location, g_settings.weather_city);
+	}
+
+	return ret;
+}
+
 bool CWeatherSetup::changeNotify(const neutrino_locale_t OptionName, void */*data*/)
 {
 	int ret = menu_return::RETURN_NONE;

src/gui/weather_setup.h

@@ -44,6 +44,7 @@ class CWeatherSetup : public CMenuTarget, CChangeObserver
 
 		int showWeatherSetup();
 		int showSelectWeatherLocation();
+		int findLocation();
 		void loadLocations(std::string filename);
 
 	public:

src/system/locals.h

@@ -1812,6 +1812,7 @@ typedef enum
 	LOCALE_MENU_HINT_WEATHER_API_KEY,
 	LOCALE_MENU_HINT_WEATHER_ENABLED,
 	LOCALE_MENU_HINT_WEATHER_LOCATION,
+	LOCALE_MENU_HINT_WEATHER_LOCATION_POSTCODE,
 	LOCALE_MENU_HINT_WEBRADIO_SETUP,
 	LOCALE_MENU_HINT_WEBRADIO_XML_AUTO,
 	LOCALE_MENU_HINT_WEBTV_SETUP,
@@ -2911,6 +2912,7 @@ typedef enum
 	LOCALE_WEATHER_API_KEY,
 	LOCALE_WEATHER_ENABLED,
 	LOCALE_WEATHER_LOCATION,
+	LOCALE_WEATHER_LOCATION_POSTCODE,
 	LOCALE_WEBCHANNELS_XML_ADD,
 	LOCALE_WEBCHANNELS_XML_DEL,
 	LOCALE_WEBCHANNELS_XML_ENTER,

src/system/locals_intern.h

@@ -1812,6 +1812,7 @@ const char * locale_real_names[] =
 	"menu.hint_weather_api_key",
 	"menu.hint_weather_enabled",
 	"menu.hint_weather_location",
+	"menu.hint_weather_location_postcode",
 	"menu.hint_webradio_setup",
 	"menu.hint_webradio_xml_auto",
 	"menu.hint_webtv_setup",
@@ -2911,6 +2912,7 @@ const char * locale_real_names[] =
 	"weather.api_key",
 	"weather.enabled",
 	"weather.location",
+	"weather.location_postcode",
 	"webchannels.xml.add",
 	"webchannels.xml.del",
 	"webchannels.xml.enter",