优化结构

app/system/internal/biz/permission.go

@@ -0,0 +1,18 @@
+package biz
+
+import "context"
+
+type PermissionRepo interface {
+	Buttons(context.Context, uint) ([]*MenuButton, error)
+	SetAuthorityButtons(context.Context, uint, map[uint][]uint) error
+	AuthorityButtonIDs(context.Context, uint) ([]uint, error)
+	SelectedButtons(context.Context, uint, uint) ([]uint, error)
+	SetSelectedButtons(context.Context, uint, uint, []uint) error
+	CanRemoveButton(context.Context, string) (bool, error)
+}
+
+type PermissionUsecase struct{ PermissionRepo }
+
+func NewPermissionUsecase(repo PermissionRepo) *PermissionUsecase {
+	return &PermissionUsecase{PermissionRepo: repo}
+}