package main
import (
"fmt"
"html/template"
"log"
"net/http"
"regexp"
)
var (
tmplHome, tmplView, tmplUser, tmplBomView *template.Template
)
func baseHandler(w http.ResponseWriter, r *http.Request) {
var err error
log.Printf("serving %s\n", r.URL.Path)
bomUrlPattern := regexp.MustCompile("^/([a-zA-Z][a-zA-Z0-9_]*)/([a-zA-Z][a-zA-Z0-9_]*)(/.*)$")
userUrlPattern := regexp.MustCompile("^/([a-zA-Z][a-zA-Z0-9_]*)/$")
switch {
case r.URL.Path == "/":
err = homeController(w, r)
case bomUrlPattern.MatchString(r.URL.Path):
match := bomUrlPattern.FindStringSubmatch(r.URL.Path)
err = bomController(w, r, match[1], match[2], match[3])
case userUrlPattern.MatchString(r.URL.Path):
match := userUrlPattern.FindStringSubmatch(r.URL.Path)
err = userController(w, r, match[1], "")
default:
// 404
log.Println("warning: 404")
http.NotFound(w, r)
return
}
if err != nil {
// this could cause multiple responses?
http.Error(w, "Internal error (check logs)", 500)
log.Println("error, 500: " + err.Error())
}
}
func homeController(w http.ResponseWriter, r *http.Request) (err error) {
context := make(map[string]interface{})
context["BomList"], err = bomstore.ListBoms("")
if err != nil {
return
}
err = tmplHome.Execute(w, context)
return
}
func userController(w http.ResponseWriter, r *http.Request, user, extra string) (err error) {
if !isShortName(user) {
http.Error(w, "invalid username: "+user, 400)
return
}
var email string
email, err = auth.GetEmail(user)
if err != nil {
// no such user
http.NotFound(w, r)
return
}
context := make(map[string]interface{})
context["BomList"], err = bomstore.ListBoms(ShortName(user))
context["Email"] = email
context["UserName"] = user
if err != nil {
return
}
err = tmplUser.Execute(w, context)
return
}
func bomController(w http.ResponseWriter, r *http.Request, user, name, extra string) (err error) {
if !isShortName(user) {
http.Error(w, "invalid username: "+user, 400)
return
}
if !isShortName(name) {
http.Error(w, "invalid bom name: "+name, 400)
return
}
context := make(map[string]interface{})
context["BomMeta"], context["Bom"], err = bomstore.GetHead(ShortName(user), ShortName(name))
if err != nil {
return
}
err = tmplBomView.Execute(w, context)
return
}
func serveCmd() {
var err error
// load and parse templates
baseTmplPath := *templatePath + "/base.html"
tmplHome = template.Must(template.ParseFiles(*templatePath+"/home.html", baseTmplPath))
tmplUser = template.Must(template.ParseFiles(*templatePath+"/user.html", baseTmplPath))
tmplBomView = template.Must(template.ParseFiles(*templatePath+"/bom_view.html", baseTmplPath))
if err != nil {
log.Fatal(err)
}
openBomStore()
openAuthStore()
// serve template static assets (images, CSS, JS)
http.Handle("/static/", http.FileServer(http.Dir(*templatePath+"/")))
http.Handle("/favicon.ico", http.FileServer(http.Dir(*templatePath+"/static/")))
// fall through to default handler
http.HandleFunc("/", baseHandler)
listenString := fmt.Sprintf("%s:%d", *listenHost, *listenPort)
http.ListenAndServe(listenString, nil)
fmt.Println("Serving at " + listenString)
}