cache buster

src/boxes/box-db.go

@@ -57,13 +57,12 @@ func (box Box) persist() {
 		log.Fatal(err)
 	}
 
-	res, err := stmt.Exec(box.Id, box.Value)
+	_, err = stmt.Exec(box.Id, box.Value)
 	if err != nil {
 		log.Fatal(err)
 	}
 	stmt.Close()
 
-	log.Info(res.LastInsertId())
 }
 
 func getBox(id int) (Box, error) {

src/boxes/boxes.go

@@ -58,7 +58,6 @@ func handleWsError(err error, conn *websocket.Conn) {
 func broadcastMessage(message string) {
 	wsMutex.Lock()
 	defer wsMutex.Unlock()
-
 	for conn := range wsConnections {
 		err := websocket.Message.Send(conn, message)
 		handleWsError(err, conn)
@@ -66,6 +65,22 @@ func broadcastMessage(message string) {
 	}
 }
 
+func randomizeBoxes(count int) []Box {
+	boxes := make([]Box, count)
+	for i := 0; i < count; i++ {
+		index := random.Int() % 1000
+		box, err := getBox(index)
+		if err != nil {
+			log.Fatal(err)
+		}
+		box.Value = !box.Value
+		box.persist()
+		boxes[i] = box
+	}
+	return boxes
+
+}
+
 func handleMessage(msg string, ws *websocket.Conn) error {
 	if msg == "gol" {
 		matrix := make(map[string]Box)
@@ -77,7 +92,6 @@ func handleMessage(msg string, ws *websocket.Conn) error {
 				index++
 			}
 		}
-		log.Error(matrix)
 		nextGen := make([]Box, 0)
 		for id, item := range matrix {
 			nextItem := shouldBeAlive(matrix, id)
@@ -94,16 +108,17 @@ func handleMessage(msg string, ws *websocket.Conn) error {
 		}
 		broadcastMessage(nextMessage)
 
-	} else if msg == "random" {
-		index := random.Int() % 1000
-		box, err := getBox(index)
+	} else if strings.Contains(msg, "r:") {
+		count, err := strconv.Atoi(strings.Split(msg, ":")[1])
 		if err != nil {
-			log.Fatal(err)
+			log.Errorf("Failed to parse randomize count: %v", err)
+		}
+		boxes := randomizeBoxes(count)
+		message := ""
+		for _, box := range boxes {
+			message += box.serialize()
 		}
-		box.Value = !box.Value
-		box.persist()
 
-		message := box.serialize()
 		broadcastMessage(message)
 
 	} else if strings.Contains(msg, "b:") {

src/draw/draw.go

@@ -8,6 +8,8 @@ import (
 	"github.com/labstack/echo/v4"
 	"github.com/labstack/gommon/log"
 	"golang.org/x/net/websocket"
+
+	"knet.sk/src/util"
 )
 
 var (
@@ -86,9 +88,9 @@ func InitWs(c echo.Context) error {
 }
 
 type Data struct {
-	Template string
+	BuildNumber string
 }
 
 func Page(c echo.Context) error {
-	return c.Render(200, "index2", Data{Template: "draw"})
+	return c.Render(200, "index2", Data{BuildNumber: util.GetBuildNumber()})
 }

src/main.go

@@ -9,6 +9,7 @@ import (
 	"github.com/labstack/gommon/log"
 	"knet.sk/src/boxes"
 	"knet.sk/src/draw"
+	"knet.sk/src/util"
 )
 
 type Templates struct {
@@ -26,12 +27,14 @@ func NewTemplates() *Templates {
 }
 
 type Page struct {
-	Boxes []boxes.Box
+	Boxes       []boxes.Box
+	BuildNumber string
 }
 
 func newPage(boxes []boxes.Box) Page {
 	return Page{
-		Boxes: boxes,
+		Boxes:       boxes,
+		BuildNumber: util.GetBuildNumber(),
 	}
 }
 
@@ -41,6 +44,7 @@ var (
 
 func main() {
 	e.Renderer = NewTemplates()
+	// read the ./build_number file
 
 	e.Logger.SetLevel(log.DEBUG)
 	e.Use(middleware.Logger())

src/util/build-number.go

@@ -0,0 +1,20 @@
+package util
+
+import (
+	"fmt"
+	"os"
+)
+
+var buildNumber string
+
+func GetBuildNumber() string {
+	if buildNumber == "" {
+		b, err := os.ReadFile("build_number") // just pass the file name
+		if err != nil {
+			fmt.Print(err)
+		}
+		buildNumber = string(b)
+	}
+
+	return buildNumber
+}