package hello

import (
    "appengine"
    "appengine/user"
    "http"
    "template"
)


var baseTemplate = template.MustParseFile("base.html", nil)

func init() {
    http.HandleFunc("/", handler)
}

func handler(w http.ResponseWriter, r *http.Request) {
    c := appengine.NewContext(r)
    u := user.Current(c)

    if u == nil {
        url, err := user.LoginURL(c, r.URL.String())
        if err != nil {
            http.Error(w, err.String(), http.StatusInternalServerError)
            return
        }
        w.Header().Set("Location", url)
        w.WriteHeader(http.StatusFound)
        return
    }

    baseTemplate.Execute(w, u)
}