refractor(build): move prepare tasks to the prepare sub package.

pkg/prebuild/prepare/synchronise.go

@@ -0,0 +1,40 @@
+// apparmor.d - Full set of apparmor profiles
+// Copyright (C) 2021-2024 Alexandre Pujol <alexandre@pujol.io>
+// SPDX-License-Identifier: GPL-2.0-only
+
+package prepare
+
+import (
+	"github.com/arduino/go-paths-helper"
+	"github.com/roddhjav/apparmor.d/pkg/prebuild/cfg"
+	"github.com/roddhjav/apparmor.d/pkg/util"
+)
+
+type Synchronise struct {
+	cfg.Base
+}
+
+func init() {
+	RegisterTask(&Synchronise{
+		Base: cfg.Base{
+			Keyword: "synchronise",
+			Msg:     "Initialize a new clean apparmor.d build directory",
+		},
+	})
+}
+
+func (p Synchronise) Apply() ([]string, error) {
+	res := []string{}
+	dirs := paths.PathList{cfg.RootApparmord, cfg.Root.Join("root"), cfg.Root.Join("systemd")}
+	for _, dir := range dirs {
+		if err := dir.RemoveAll(); err != nil {
+			return res, err
+		}
+	}
+	for _, name := range []string{"apparmor.d", "root"} {
+		if err := util.CopyTo(paths.New(name), cfg.Root.Join(name)); err != nil {
+			return res, err
+		}
+	}
+	return res, nil
+}