moved code out of main, made web package

web.go

@@ -1,6 +1,34 @@
 package web
 
+import (
+	"net/http"
+	"path/filepath"
+
+	assetfs "github.com/elazarl/go-bindata-assetfs"
+)
+
 //go:generate go get github.com/jteeuwen/go-bindata/...
 //go:generate go get github.com/elazarl/go-bindata-assetfs/...
 //go:generate rm -f static.go
 //go:generate go-bindata -o static.go -pkg=web static/...
+
+func NewServer(sm *http.ServeMux, static string) {
+	var fs http.FileSystem
+	if p, d := filepath.Split(static); d == "static" {
+		static = p
+	}
+	fs = http.Dir(static)
+	if static == "" {
+		fs = &assetfs.AssetFS{
+			Asset:     Asset,
+			AssetDir:  AssetDir,
+			AssetInfo: AssetInfo,
+			Prefix:    "static",
+		}
+	}
+
+	sm.Handle(
+		"/",
+		http.FileServer(fs),
+	)
+}