Cleanup for readability

glist/glist.go

@@ -1,3 +1,4 @@
+// Package glist handles the list processing
 package glist
 
 import (
@@ -34,16 +35,17 @@ func NewGList(chatID int, items ...string) *GList {
 	return &g
 }
 
-var PersistReqC chan<- *GList
+var persistReqC chan<- *GList
 
 func startPersistenceGoR() {
 	reqs := make(chan *GList, 50)
-	PersistReqC = reqs
+	persistReqC = reqs
 	go func() {
-		lists := map[*GList]struct{}{}
 		for g := range reqs {
-			lists[g] = struct{}{}
-			time.Sleep(5 * time.Second)
+			lists := map[*GList]struct{}{
+				g: struct{}{},
+			}
+			time.Sleep(5 * time.Second) // Collect all persist requests for 5 seconds
 			for len(reqs) > 0 {
 				g := <-reqs
 				lists[g] = struct{}{}
@@ -51,7 +53,6 @@ func startPersistenceGoR() {
 			for g := range lists {
 				g.persist()
 			}
-			lists = make(map[*GList]struct{}, len(lists))
 		}
 	}()
 }
@@ -83,14 +84,14 @@ outer:
 		}
 		g.Items = append(g.Items, Entry{text, false})
 	}
-	PersistReqC <- g
+	persistReqC <- g
 }
 
 func (g *GList) Toggle(text string) {
 	for i, item := range g.Items {
 		if item.Text == text {
 			g.Items[i].Checked = !g.Items[i].Checked
-			PersistReqC <- g
+			persistReqC <- g
 			return
 		}
 	}
@@ -105,7 +106,7 @@ func (g *GList) ClearChecked() {
 		}
 	}
 	g.Items = remaining
-	PersistReqC <- g
+	persistReqC <- g
 }
 
 type button struct {

glist/glist_test.go

@@ -21,7 +21,7 @@ func TestGList(t *testing.T) {
 func TestSplit(t *testing.T) {
 	g := &GList{}
 	//This resets the channel, so test does not try to persist
-	PersistReqC = make(chan *GList, 50)
+	persistReqC = make(chan *GList, 50)
 	g.Add("foo")
 	g.Add("bar\nfoo\nblah")
 	g.Add("foo")

main.go

@@ -31,8 +31,8 @@ func main() {
 
 	port := func() int {
 		portStr := os.Getenv("CHKBOT_PORT")
-		port, err := strconv.Atoi(portStr)
-		if err == nil {
+
+		if port, err := strconv.Atoi(portStr); err == nil {
 			return port
 		}
 		return 28923
@@ -41,10 +41,10 @@ func main() {
 	dataPath := func() string {
 		dataPath := os.Getenv("CHKBOT_DATA_PATH")
 		if dataPath == "" {
-			dataPath = "."
+			return "."
 		}
-		err := os.MkdirAll(dataPath, 0755)
-		if err != nil {
+
+		if err := os.MkdirAll(dataPath, 0755); err != nil {
 			log.Panicf("Failed to create datapath, path: %s, err: %s", dataPath, err)
 		}
 		return dataPath
@@ -52,15 +52,16 @@ func main() {
 
 	glist.DataPath = dataPath
 
-	commit := "unknown"
-
+	commit := func() string {
 		if bi, ok := debug.ReadBuildInfo(); ok {
 			for _, s := range bi.Settings {
 				if s.Key == "vcs.revision" {
-				commit = s.Value[:8]
+					return s.Value[:8]
 				}
 			}
 		}
+		return "unknown"
+	}()
 
 	log.Printf("Grocery List bot (%s) starting with datapath:%s, port:%d\n", commit, dataPath, port)
 
@@ -70,11 +71,11 @@ func main() {
 	}
 	botPath := fmt.Sprintf("/bot%s", apiToken)
 	http.HandleFunc(botPath, func(w http.ResponseWriter, r *http.Request) {
-		_, err := w.Write([]byte("ok"))
-		if err != nil {
+		defer func() {
+			if _, err := w.Write([]byte("ok")); err != nil {
 				log.Println(err)
-			return
 			}
+		}()
 		body, err := io.ReadAll(r.Body)
 		if err != nil {
 			log.Println(err)