Other: Read sync workers setting from vault

internal/vault/settings.go

@@ -201,3 +201,13 @@ func (vault *Vault) SetFirstStartGUI(firstStartGUI bool) error {
 		data.Settings.FirstStartGUI = firstStartGUI
 	})
 }
+
+// SyncWorkers returns the number of workers to use for syncing.
+func (vault *Vault) SyncWorkers() int {
+	return vault.get().Settings.SyncWorkers
+}
+
+// SyncBuffer returns the number of buffer workers to use for syncing.
+func (vault *Vault) SyncBuffer() int {
+	return vault.get().Settings.SyncBuffer
+}

internal/vault/settings_test.go

@@ -18,6 +18,7 @@
 package vault_test
 
 import (
+	"runtime"
 	"testing"
 
 	"github.com/Masterminds/semver/v3"
@@ -216,3 +217,11 @@ func TestVault_Settings_FirstStartGUI(t *testing.T) {
 	// Check the new first start value.
 	require.Equal(t, false, s.GetFirstStartGUI())
 }
+
+func TestVault_Settings_SyncWorkers(t *testing.T) {
+	// create a new test vault.
+	s := newVault(t)
+
+	require.Equal(t, runtime.NumCPU(), s.SyncWorkers())
+	require.Equal(t, runtime.NumCPU(), s.SyncBuffer())
+}

internal/vault/types.go

@@ -19,6 +19,7 @@ package vault
 
 import (
 	"math/rand"
+	"runtime"
 
 	"github.com/ProtonMail/gluon/imap"
 	"github.com/ProtonMail/proton-bridge/v2/internal/updater"
@@ -60,6 +61,9 @@ type Settings struct {
 	LastVersion   string
 	FirstStart    bool
 	FirstStartGUI bool
+
+	SyncWorkers int
+	SyncBuffer  int
 }
 
 func newDefaultSettings(gluonDir string) Settings {
@@ -83,6 +87,9 @@ func newDefaultSettings(gluonDir string) Settings {
 		LastVersion:   "0.0.0",
 		FirstStart:    true,
 		FirstStartGUI: true,
+
+		SyncWorkers: runtime.NumCPU(),
+		SyncBuffer:  runtime.NumCPU(),
 	}
 }