alist/server/static.go

package server

import (
	"github.com/Xhofe/alist/conf"
	"github.com/Xhofe/alist/public"
	"github.com/gin-gonic/gin"
	log "github.com/sirupsen/logrus"
	"io/fs"
	"io/ioutil"
	"net/http"
	"strings"
)

func InitIndex() {
	var index fs.File
	var err error
	if !strings.Contains(conf.Conf.Assets, "/") {
		conf.Conf.Assets = conf.DefaultConfig().Assets
	}
	index, err = public.Public.Open("index.html")
	if err != nil {
		log.Fatal(err.Error())
	}
	data, _ := ioutil.ReadAll(index)
	cdnUrl := strings.ReplaceAll(conf.Conf.Assets, "$version", conf.WebTag)
	cdnUrl = strings.TrimRight(cdnUrl, "/")
	conf.RawIndexHtml = string(data)
	if strings.Contains(conf.RawIndexHtml, "CDN_URL") {
		conf.RawIndexHtml = strings.ReplaceAll(conf.RawIndexHtml, "/CDN_URL", cdnUrl)
		conf.RawIndexHtml = strings.ReplaceAll(conf.RawIndexHtml, "assets/", cdnUrl+"/assets/")
	}
}

func Static(r *gin.Engine) {
	//InitIndex()
	assets, err := fs.Sub(public.Public, "assets")
	if err != nil {
		log.Fatalf("can't find assets folder")
	}
	pub, err := fs.Sub(public.Public, "public")
	if err != nil {
		log.Fatalf("can't find public folder")
	}
	r.StaticFS("/assets/", http.FS(assets))
	r.StaticFS("/public/", http.FS(pub))
	r.NoRoute(func(c *gin.Context) {
		c.Header("Content-Type", "text/html")
		c.Status(200)
		if strings.HasPrefix(c.Request.URL.Path, "/@manage") {
			_, _ = c.Writer.WriteString(conf.ManageHtml)
		} else {
			_, _ = c.Writer.WriteString(conf.IndexHtml)
		}
		c.Writer.Flush()
		c.Writer.WriteHeaderNow()
	})
}