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package main
import (
"fmt"
"html/template"
"net/http"
"github.com/julienschmidt/httprouter"
)
var indexTemplate, packageTemplate *template.Template
func init() {
tmpls := template.Must(template.ParseGlob("templates/*.html"))
if indexTemplate = tmpls.Lookup("index.html"); indexTemplate == nil {
panic("Missing index.html template")
}
if packageTemplate = tmpls.Lookup("package.html"); packageTemplate == nil {
panic("Missing package.html template")
}
}
// CreateHandler creates a Sally http.Handler
func CreateHandler(config *Config) http.Handler {
router := httprouter.New()
router.RedirectTrailingSlash = false
router.GET("/", indexHandler{config: config}.Handle)
for name, pkg := range config.Packages {
handle := packageHandler{
pkgName: name,
pkg: pkg,
config: config,
}.Handle
router.GET(fmt.Sprintf("/%s", name), handle)
router.GET(fmt.Sprintf("/%s/*path", name), handle)
}
return router
}
type indexHandler struct {
config *Config
}
func (h indexHandler) Handle(w http.ResponseWriter, r *http.Request, _ httprouter.Params) {
if err := indexTemplate.Execute(w, h.config); err != nil {
http.Error(w, err.Error(), 500)
}
}
type packageHandler struct {
pkgName string
pkg Package
config *Config
}
func (h packageHandler) Handle(w http.ResponseWriter, r *http.Request, ps httprouter.Params) {
canonicalURL := fmt.Sprintf("%s/%s", h.config.URL, h.pkgName)
data := struct {
Repo string
CanonicalURL string
GodocURL string
}{
Repo: h.pkg.Repo,
CanonicalURL: canonicalURL,
GodocURL: fmt.Sprintf("https://godoc.org/%s%s", canonicalURL, ps.ByName("path")),
}
if err := packageTemplate.Execute(w, data); err != nil {
http.Error(w, err.Error(), 500)
}
}
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