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web.go
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web.go
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package server
import (
"fmt"
"io/fs"
"mime"
"net/http"
"strings"
"alox.sh"
"alox.sh/webpage"
)
type WebHandler func(*Web, http.ResponseWriter, *http.Request)
type Web struct {
*Server
// https://hackandsla.sh/posts/2021-11-06-serve-spa-from-go/
// use http.FileSystem instead?
FS map[string]fs.FS
Webpages map[string]*webpage.Webpage
}
func NewWeb(handler WebHandler) (web *Web) {
web = &Web{
Server: NewServer(),
FS: map[string]fs.FS{},
Webpages: map[string]*webpage.Webpage{},
}
return web.setHandler(handler)
}
func (web *Web) setHandler(handler WebHandler) *Web {
web.Server.setHandler(func(_ alox.Server, responseWriter http.ResponseWriter, request *http.Request) {
handler(web, responseWriter, request)
})
return web
}
func (web *Web) Webpage(key string) *webpage.Webpage {
if web.Webpages[key] != nil {
webpage, _ := web.Webpages[key].Clone()
return webpage
}
return nil
}
func (web *Web) SetWebpage(key string, webpage *webpage.Webpage) *Web {
web.Webpages[key] = webpage
return web
}
func (web *Web) WriteFile(responseWriter http.ResponseWriter, request *http.Request, key, name string) (err error) {
var buffer []byte
buffer, err = fs.ReadFile(web.FS[key], strings.TrimPrefix(name, "/"))
if err != nil {
return
}
// http.ServeContent(responseWriter, request, fileStat.Name(), fileStat.ModTime(), bytes.NewReader(buffer))
nameByDot := strings.Split(name, ".")
contentType := mime.TypeByExtension("." + nameByDot[len(nameByDot)-1])
if contentType == "" {
contentType = http.DetectContentType(buffer)
}
header := responseWriter.Header()
header.Set("Content-Length", fmt.Sprintf("%d", len(buffer)))
header.Set("Content-Type", contentType)
responseWriter.WriteHeader(http.StatusOK)
if request.Method != "HEAD" {
_, err = responseWriter.Write(buffer)
}
return
}