Initialize Clash Web source and deployment documentation

web/assets.go

@@ -0,0 +1,36 @@
+package web
+
+import (
+	"embed"
+	"io/fs"
+	"net/http"
+	"strings"
+)
+
+//go:embed all:dist
+var assets embed.FS
+
+func Handler() http.Handler {
+	root, _ := fs.Sub(assets, "dist")
+	files := http.FileServer(http.FS(root))
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		path := strings.TrimPrefix(r.URL.Path, "/")
+		if path == "" {
+			path = "index.html"
+		}
+		if _, err := fs.Stat(root, path); err != nil {
+			if strings.Contains(path, ".") {
+				http.NotFound(w, r)
+				return
+			}
+			r = r.Clone(r.Context())
+			r.URL.Path = "/"
+		}
+		if strings.HasPrefix(path, "assets/") {
+			w.Header().Set("Cache-Control", "public, max-age=31536000, immutable")
+		} else {
+			w.Header().Set("Cache-Control", "no-cache")
+		}
+		files.ServeHTTP(w, r)
+	})
+}