Fix minor autosave race condition

internal/action/command.go

@@ -406,9 +406,10 @@ func SetGlobalOptionNative(option string, nativeValue interface{}) error {
 		}
 	} else if option == "autosave" {
 		if nativeValue.(float64) > 0 {
+			config.SetAutoTime(int(nativeValue.(float64)))
 			config.StartAutoSave()
 		} else {
-			config.StopAutoSave()
+			config.SetAutoTime(0)
 		}
 	} else {
 		for _, pl := range config.Plugins {

internal/config/autosave.go

@@ -1,30 +1,45 @@
 package config
 
 import (
-	"log"
+	"sync"
 	"time"
 )
 
 var Autosave chan bool
+var autotime int
+
+// lock for autosave
+var autolock sync.Mutex
 
 func init() {
 	Autosave = make(chan bool)
 }
 
+func SetAutoTime(a int) {
+	autolock.Lock()
+	autotime = a
+	autolock.Unlock()
+}
+
+func GetAutoTime() int {
+	autolock.Lock()
+	a := autotime
+	autolock.Unlock()
+	return a
+}
+
 func StartAutoSave() {
 	go func() {
 		for {
-			autotime := time.Duration(GlobalSettings["autosave"].(float64))
 			if autotime < 1 {
 				break
 			}
-			time.Sleep(autotime * time.Second)
-			log.Println("Autosave")
+			time.Sleep(time.Duration(autotime) * time.Second)
+			// it's possible autotime was changed while sleeping
+			if autotime < 1 {
+				break
+			}
 			Autosave <- true
 		}
 	}()
 }
-
-func StopAutoSave() {
-	GlobalSettings["autosave"] = float64(0)
-}