Auto-update interface

home/control_update.go

@@ -244,6 +244,8 @@ func getUpdateInfo(jsonData []byte) (*updateInfo, error) {
 	if runtime.GOOS == "windows" {
 		binName = "AdGuardHome.exe"
 	}
+
+	// TODO: This is a mistake, work dir can be different
 	u.curBinName = filepath.Join(workDir, binName)
 	if !util.FileExists(u.curBinName) {
 		return nil, fmt.Errorf("executable file %s doesn't exist", u.curBinName)

update/check.go

@@ -0,0 +1,13 @@
+package update
+
+type VersionInfo struct {
+	NewVersion           string
+	Announcement         string
+	AnnouncementURL      string
+	SelfUpdateMinVersion string
+	CanAutoUpdate        bool
+}
+
+func (u *Updater) GetVersionResponse() (VersionInfo, error) {
+	return VersionInfo{}, nil
+}

update/updater.go

@@ -0,0 +1,31 @@
+package update
+
+import (
+	"os"
+	"path/filepath"
+)
+
+type Updater struct {
+	DisableUpdate bool
+
+	currentBinary string // current binary executable
+	workDir       string // updater work dir (where backup/upd dirs will be created)
+}
+
+// NewUpdater - creates a new instance of the Updater
+func NewUpdater(workDir string) *Updater {
+	return &Updater{
+		currentBinary: filepath.Base(os.Args[0]),
+		workDir:       workDir,
+	}
+}
+
+// DoUpdate - conducts the auto-update
+// 1. Downloads the update file
+// 2. Unpacks it and checks the contents
+// 3. Backups the current version and configuration
+// 4. Replaces the old files
+// 5. Restarts the service
+func (u *Updater) DoUpdate() error {
+	return nil
+}