1 files changed, 81 insertions, 0 deletions
diff --git a/yr_no.go b/yr_no.go
new file mode 100644
index 0000000..269ff62
--- /dev/null
+++ b/yr_no.go
@@ -0,0 +1,81 @@
+package main
+
+import (
+	"encoding/xml"
+	"fmt"
+	"net/http"
+	"time"
+)
+
+func toTime(s string) time.Time {
+	t, _ := time.Parse("2006-01-02T15:04:05", s)
+	return t
+}
+
+type Weather struct {
+	Temp   Temperature `xml:"temperature"`
+	Symbol struct {
+		Number int `xml:"number,attr"`
+	} `xml:"symbol"`
+	From string `xml:"from,attr"`
+	URL  string
+	Icon string
+}
+
+func (w *Weather) prepIcon(sun Sun) {
+	rise := toTime(sun.Rise)
+	set := toTime(sun.Set)
+	t := toTime(w.From)
+
+	night := t.Before(rise) || t.After(set)
+	format := "http://symbol.yr.no/grafikk/sym/b100/%02d"
+	switch w.Symbol.Number {
+	case 1, 2, 3, 5, 6, 7, 8, 20, 21:
+		if night {
+			format += "n.50"
+		} else {
+			format += "d"
+		}
+	}
+	format += ".png"
+
+	w.Icon = fmt.Sprintf(format, w.Symbol.Number)
+}
+
+type Temperature struct {
+	Value int    `xml:"value,attr"`
+	Unit  string `xml:"unit,attr"`
+}
+
+type Sun struct {
+	Rise string `xml:"rise,attr"`
+	Set  string `xml:"set,attr"`
+}
+
+type weatherdata struct {
+	Sun      Sun        `xml:"sun"`
+	Forecast []*Weather `xml:"forecast>tabular>time"`
+}
+
+const place = "Germany/Schleswig-Holstein/Lübeck"
+
+func CurrentWeather() (Weather, Sun, error) {
+	url := "http://www.yr.no/place/" + place + "/forecast_hour_by_hour.xml"
+	resp, err := http.Get(url)
+	if err != nil {
+		return Weather{}, Sun{}, err
+	}
+	defer resp.Body.Close()
+
+	var wd weatherdata
+	dec := xml.NewDecoder(resp.Body)
+	if err := dec.Decode(&wd); err != nil {
+		return Weather{}, Sun{}, err
+	}
+
+	w := wd.Forecast[0]
+	w.URL = "http://www.yr.no/place/" + place
+	w.prepIcon(wd.Sun)
+
+	return *w, wd.Sun, nil
+}