feat: Add static file to output bin

Now the final binary has a standalone web server including necessary
static file.

1 files changed, 18 insertions, 0 deletions

diff --git a/pkg/ext/fileserver.go b/pkg/ext/fileserver.go
new file mode 100644
index 0000000..fdea08e
--- /dev/null
+++ b/pkg/ext/fileserver.go
@@ -0,0 +1,18 @@
+package ext
+
+import (
+	"io/fs"
+
+	"github.com/valyala/fasthttp"
+)
+
+type FileSystem interface {
+	Open(name string) (fs.File, error)
+}
+
+func FileServer(rootFS FileSystem, rootPath string) fasthttp.RequestHandler {
+	return func(r *fasthttp.RequestCtx) {
+		path := r.UserValue("filepath").(string)
+		r.SendFile(rootPath + path)
+	}
+}