Initial commit

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

app/router/html.go

@@ -0,0 +1,34 @@
+package router
+
+import (
+	"html/template"
+	"io/fs"
+	"path/filepath"
+	"strings"
+	webtpl "videoweb/app/template"
+)
+
+func mustHTMLTemplate(funcMap template.FuncMap) *template.Template {
+	tmpl := template.New("").Funcs(funcMap)
+	err := fs.WalkDir(webtpl.FS, ".", func(path string, d fs.DirEntry, err error) error {
+		if err != nil || d.IsDir() {
+			return err
+		}
+		if !strings.HasSuffix(strings.ToLower(d.Name()), ".html") {
+			return nil
+		}
+		body, err := webtpl.FS.ReadFile(path)
+		if err != nil {
+			return err
+		}
+		_, err = tmpl.New(filepath.Base(path)).Parse(string(body))
+		return err
+	})
+	if err != nil {
+		panic(err)
+	}
+	if tmpl.Lookup("index.html") == nil {
+		panic("embedded html templates are empty")
+	}
+	return tmpl
+}