downloads API, UI

cmd/dkl-local-server/ui.go

@@ -0,0 +1,45 @@
+package main
+
+import (
+	"encoding/base32"
+	"io"
+	"io/fs"
+	"log"
+	"strings"
+
+	"github.com/cespare/xxhash"
+	dlshtml "novit.tech/direktil/local-server/html"
+)
+
+func computeUIHash() {
+	xxh := xxhash.New()
+
+	err := fs.WalkDir(dlshtml.FS, "ui", func(path string, entry fs.DirEntry, walkErr error) (err error) {
+		if walkErr != nil {
+			err = walkErr
+			return
+		}
+
+		if entry.IsDir() {
+			return
+		}
+
+		f, err := dlshtml.FS.Open(path)
+		if err != nil {
+			return
+		}
+		defer f.Close()
+
+		io.Copy(xxh, f)
+
+		return nil
+	})
+
+	if err != nil {
+		log.Fatal("failed to hash UI: ", err)
+	}
+
+	h := strings.ToLower(base32.HexEncoding.WithPadding(base32.NoPadding).EncodeToString(xxh.Sum(nil)))[:5]
+	log.Printf("UI hash: %s", h)
+	wPublicState.Change(func(v *PublicState) { v.UIHash = h })
+}