edge/pkg/http/html5_fileserver.go

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package http
import (
"net/http"
"os"
"path"
"strings"
"github.com/pkg/errors"
"gitlab.com/wpetit/goweb/logger"
)
func HTML5Fileserver(fs http.FileSystem) http.Handler {
handler := http.FileServer(fs)
fn := func(w http.ResponseWriter, r *http.Request) {
urlPath := r.URL.Path
if !strings.HasPrefix(urlPath, "/") {
urlPath = "/" + urlPath
r.URL.Path = urlPath
}
urlPath = path.Clean(urlPath)
file, err := fs.Open(urlPath)
if err != nil {
if errors.Is(err, os.ErrNotExist) {
r.URL.Path = "/"
handler.ServeHTTP(w, r)
return
}
logger.Error(r.Context(), "could not open bundle file", logger.CapturedE(err))
http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)
return
}
defer func() {
if err := file.Close(); err != nil {
logger.Error(r.Context(), "could not close file", logger.CapturedE(err))
http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)
return
}
}()
handler.ServeHTTP(w, r)
}
return http.HandlerFunc(fn)
}