fix: size 0 bug

fix: huge index can't sort _id, back use scroll_id
refac: some files arch

internal/opt/opt.go

@@ -0,0 +1,23 @@
+package opt
+
+type args struct {
+	Version   bool
+	Input     string
+	Output    string
+	Limit     int
+	Max       int
+	Type      string
+	Timeout   int
+	Source    string
+	Sort      string
+	Query     string
+	QueryFile string
+}
+
+type config struct {
+	Debug bool `json:"-"`
+	Dev   bool `json:"-"`
+	Args  args `json:"-"`
+}
+
+var Cfg = &config{}

internal/opt/var.go

@@ -2,10 +2,11 @@ package opt
 
 const (
 	ScrollDurationSeconds = 10 * 60
+	DefaultSize           = 100
 )
 
 var (
-	Debug   bool
+	Version = "vx.x.x"
 	Timeout int
 
 	BuffSize    = 5 * 1024 * 1024   // 5M

internal/opt/version.go

@@ -1,3 +0,0 @@
-package opt
-
-const Version = "v0.2.1"