Move all the code to a lib folder

lib/database/news.go

@@ -0,0 +1,49 @@
+package database
+
+import (
+	log "github.com/cihub/seelog"
+
+	"time"
+
+	"gopkg.in/mgo.v2"
+	"gopkg.in/mgo.v2/bson"
+)
+
+const (
+	news_coll = "news"
+)
+
+type News struct {
+	Date time.Time
+	Text string
+}
+
+func indexNews(coll *mgo.Collection) {
+	idx := mgo.Index{
+		Key:        []string{"-date"},
+		Background: true,
+	}
+	err := coll.EnsureIndex(idx)
+	if err != nil {
+		log.Error("Error indexing news: ", err)
+	}
+}
+
+func addNews(coll *mgo.Collection, text string) error {
+	var news News
+	news.Text = text
+	news.Date = time.Now()
+	return coll.Insert(news)
+}
+
+func getNews(coll *mgo.Collection, num int, days int) (news []News, err error) {
+	query := bson.M{}
+	if days != 0 {
+		duration := time.Duration(-24*days) * time.Hour
+		date := time.Now().Add(duration)
+		query = bson.M{"date": bson.M{"$gt": date}}
+	}
+	q := coll.Find(query).Sort("-date").Limit(num)
+	err = q.All(&news)
+	return
+}