Files
probo/pkg/server/web/web.go
Bryan Frimin 839d842fd1 Cache static assets
Signed-off-by: Bryan Frimin <bryan@getprobo.com>
2025-04-24 17:57:59 -07:00

97 lines
2.4 KiB
Go

// Copyright (c) 2025 Probo Inc <hello@getprobo.com>.
//
// Permission to use, copy, modify, and/or distribute this software for any
// purpose with or without fee is hereby granted, provided that the above
// copyright notice and this permission notice appear in all copies.
//
// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
// REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
// AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
// INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
// LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
// OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
// PERFORMANCE OF THIS SOFTWARE.
package web
import (
"io/fs"
"net/http"
"strings"
"time"
"github.com/getprobo/probo/apps/console"
)
type Server struct {
spaFS http.FileSystem
indexContent []byte
}
func NewServer() (*Server, error) {
subFS, err := fs.Sub(console.StaticFiles, "dist")
if err != nil {
return nil, err
}
indexFile, err := subFS.Open("index.html")
if err != nil {
return nil, err
}
defer indexFile.Close()
stat, err := indexFile.Stat()
if err != nil {
return nil, err
}
indexContent := make([]byte, stat.Size())
_, err = indexFile.Read(indexContent)
if err != nil {
return nil, err
}
return &Server{
spaFS: http.FS(subFS),
indexContent: indexContent,
}, nil
}
func (s *Server) ServeSPA(w http.ResponseWriter, r *http.Request) {
path := r.URL.Path
f, err := s.spaFS.Open(path)
if err == nil {
defer f.Close()
if isStaticFile(path) {
w.Header().Set("Cache-Control", "public, max-age=31536000")
w.Header().Set("Expires", time.Now().Add(365*24*time.Hour).Format(time.RFC1123))
}
http.FileServer(s.spaFS).ServeHTTP(w, r)
return
}
w.Header().Set("Cache-Control", "no-cache, no-store, must-revalidate")
w.Header().Set("Pragma", "no-cache")
w.Header().Set("Expires", "0")
w.Header().Set("Content-Type", "text/html; charset=utf-8")
w.WriteHeader(http.StatusOK)
w.Write(s.indexContent)
}
func isStaticFile(path string) bool {
extensions := []string{".js", ".css", ".png", ".jpg", ".jpeg", ".gif", ".svg", ".ico", ".woff", ".woff2", ".ttf", ".eot"}
for _, ext := range extensions {
if strings.HasSuffix(path, ext) {
return true
}
}
return false
}
func (s *Server) ServeHTTP(w http.ResponseWriter, r *http.Request) {
s.ServeSPA(w, r)
}