feat: 更新嵌入式文件系统逻辑，支持路径清理和静态资源请求处理，增强前端主题切换能力

atsf_server/common/embed-file-system.go

@@ -1,32 +1,39 @@
-package common
-
-import (
-	"embed"
-	"github.com/gin-contrib/static"
-	"io/fs"
-	"net/http"
-)
-
-// Credit: https://github.com/gin-contrib/static/issues/19
-
-type embedFileSystem struct {
-	http.FileSystem
-}
-
-func (e embedFileSystem) Exists(prefix string, path string) bool {
-	_, err := e.Open(path)
-	if err != nil {
-		return false
-	}
-	return true
-}
-
-func EmbedFolder(fsEmbed embed.FS, targetPath string) static.ServeFileSystem {
-	efs, err := fs.Sub(fsEmbed, targetPath)
-	if err != nil {
-		panic(err)
-	}
-	return embedFileSystem{
-		FileSystem: http.FS(efs),
-	}
-}
+package common
+
+import (
+	"embed"
+	"github.com/gin-contrib/static"
+	"io/fs"
+	"net/http"
+	"strings"
+)
+
+// Credit: https://github.com/gin-contrib/static/issues/19
+
+type embedFileSystem struct {
+	http.FileSystem
+}
+
+func (e embedFileSystem) Exists(prefix string, path string) bool {
+	cleanPath := strings.TrimPrefix(path, prefix)
+	cleanPath = strings.TrimPrefix(cleanPath, "/")
+	if cleanPath == "" {
+		return false
+	}
+
+	_, err := e.Open(cleanPath)
+	if err != nil {
+		return false
+	}
+	return true
+}
+
+func EmbedFolder(fsEmbed embed.FS, targetPath string) static.ServeFileSystem {
+	efs, err := fs.Sub(fsEmbed, targetPath)
+	if err != nil {
+		panic(err)
+	}
+	return embedFileSystem{
+		FileSystem: http.FS(efs),
+	}
+}