102 lines
2.1 KiB
Go
102 lines
2.1 KiB
Go
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//go:build web
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package ext
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import (
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"crypto/md5"
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"demo-server/pkg/str"
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"embed"
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"fmt"
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"github.com/gin-gonic/gin"
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"github.com/vearutop/statigz"
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"go.uber.org/zap"
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"io"
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"io/fs"
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"net/http"
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"strings"
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)
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/*
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embed static web learn insp opensource license MIT
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see "github.com/v2rayA/v2rayA/server/router/index.go"
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*/
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func init() {
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initEngQueue = append(initEngQueue, initGUI)
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}
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// webRootFS 嵌入静态文件
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//
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//go:embed web
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var webRootFS embed.FS
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func initGUI(r *gin.Engine) {
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webFS, err := fs.Sub(webRootFS, "web")
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if err != nil {
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zap.S().Panic("init gui err, cause: ", err)
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}
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guiStaticResource(r, webFS)
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guiIndexHTML(r, webFS)
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}
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// html 缓存 HTML 页面
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func html(html []byte) func(ctx *gin.Context) {
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etag := fmt.Sprintf("W/%x", md5.Sum(html))
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h := str.B2S(html)
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return func(ctx *gin.Context) {
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if ctx.IsAborted() {
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return
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}
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ctx.Header("Content-Type", "text/html; charset=utf-8")
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ctx.Header("Cache-Control", "public, must-revalidate")
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ctx.Header("ETag", etag)
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if match := ctx.GetHeader("If-None-Match"); match != "" {
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if strings.Contains(match, etag) {
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ctx.Status(http.StatusNotModified)
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return
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}
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}
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ctx.String(http.StatusOK, h)
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}
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}
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func guiStaticResource(r *gin.Engine, sfs fs.FS) {
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const (
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assetsPrefix = "/assets"
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staticPrefix = "/static"
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stripPrefix = ""
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)
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staticResource := http.StripPrefix(stripPrefix, statigz.FileServer(sfs.(fs.ReadDirFS)))
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r.GET(assetsPrefix+"/*w", func(c *gin.Context) {
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staticResource.ServeHTTP(c.Writer, c.Request)
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})
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r.GET(staticPrefix+"/*w", func(c *gin.Context) {
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staticResource.ServeHTTP(c.Writer, c.Request)
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})
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r.GET("/favicon.ico", func(c *gin.Context) {
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staticResource.ServeHTTP(c.Writer, c.Request)
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})
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}
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func guiIndexHTML(r *gin.Engine, sfs fs.FS) {
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var indexHTML []byte
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{
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const indexFileName = "index.html"
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index, err := sfs.Open(indexFileName)
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if err != nil {
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zap.S().Panicf("open [%s] err! cause: %e", indexFileName, err)
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}
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indexHTML, err = io.ReadAll(index)
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if err != nil {
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zap.S().Panicf("read [%s] err! cause: %e", indexFileName, err)
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}
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}
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r.GET("/", html(indexHTML))
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r.NoRoute(html(indexHTML))
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}
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