chore: add Google Analytics event for record app startup

.github/workflows/release-linux.yaml

@@ -63,7 +63,10 @@ jobs:
 
       - name: Build wails app for Linux
         shell: bash
-        run: CGO_ENABLED=1 wails build -platform ${{ matrix.platform }} -ldflags "-X main.version=${{ github.event.release.tag_name }}" -o tiny-rdm
+        run: |
+          CGO_ENABLED=1 wails build -platform ${{ matrix.platform }} \
+          -ldflags "-X main.version=${{ github.event.release.tag_name }} -X main.gaMeasurementID=${{ secrets.GA_MEASUREMENT_ID }} -X main.gaSecretKey=${{ secrets.LINUX_GA_SECRET }}" \
+          -o tiny-rdm
 
       - name: Setup control template
         shell: bash

.github/workflows/release-macos.yaml

@@ -69,7 +69,9 @@ jobs:
 
       - name: Build wails app for macOS
         shell: bash
-        run: CGO_ENABLED=1 wails build -platform ${{ matrix.platform }} -ldflags "-X main.version=${{ github.event.release.tag_name }}"
+        run: |
+          CGO_ENABLED=1 wails build -platform ${{ matrix.platform }} \
+          -ldflags "-X main.version=${{ github.event.release.tag_name }} -X main.gaMeasurementID=${{ secrets.GA_MEASUREMENT_ID }} -X main.gaSecretKey=${{ secrets.MAC_GA_SECRET }}"
 
       #      - name: Notarise macOS app + create dmg
       #        shell: bash

.github/workflows/release-windows.yaml

@@ -62,7 +62,10 @@ jobs:
 
       - name: Build Windows portable app
         shell: bash
-        run: CGO_ENABLED=1 wails build -clean -platform ${{ matrix.platform }} -upx -webview2 embed -ldflags "-X main.version=${{ github.event.release.tag_name }}"
+        run: |
+          CGO_ENABLED=1 wails build -clean -platform ${{ matrix.platform }} \
+          -upx -webview2 embed \
+          -ldflags "-X main.version=${{ github.event.release.tag_name }} -X main.gaMeasurementID=${{ secrets.GA_MEASUREMENT_ID }} -X main.gaSecretKey=${{ secrets.WINDOWS_GA_SECRET }}"
 
       - name: Compress portable binary
         working-directory: ./build/bin

backend/services/ga_service.go

@@ -0,0 +1,110 @@
+package services
+
+import (
+	"bytes"
+	"encoding/json"
+	"github.com/google/uuid"
+	"net/http"
+	"runtime"
+	"strings"
+	"sync"
+	"tinyrdm/backend/storage"
+)
+
+// google analytics service
+type gaService struct {
+	measurementID string
+	secretKey     string
+	clientID      string
+}
+
+type GaDataItem struct {
+	ClientID string        `json:"client_id"`
+	Events   []GaEventItem `json:"events"`
+}
+
+type GaEventItem struct {
+	Name   string         `json:"name"`
+	Params map[string]any `json:"params"`
+}
+
+var ga *gaService
+var onceGA sync.Once
+
+func GA() *gaService {
+	if ga == nil {
+		onceGA.Do(func() {
+			// get or create an unique user id
+			st := storage.NewLocalStore("device.txt")
+			uidByte, err := st.Load()
+			if err != nil {
+				uidByte = []byte(strings.ReplaceAll(uuid.NewString(), "-", ""))
+				st.Store(uidByte)
+			}
+
+			ga = &gaService{
+				clientID: string(uidByte),
+			}
+		})
+	}
+	return ga
+}
+
+func (a *gaService) SetSecretKey(measurementID, secretKey string) {
+	a.measurementID = measurementID
+	a.secretKey = secretKey
+}
+
+func (a *gaService) isValid() bool {
+	return len(a.measurementID) > 0 && len(a.secretKey) > 0
+}
+
+func (a *gaService) sendEvent(events ...GaEventItem) error {
+	body, err := json.Marshal(GaDataItem{
+		ClientID: a.clientID,
+		Events:   events,
+	})
+	if err != nil {
+		return err
+	}
+
+	//url := "https://www.google-analytics.com/debug/mp/collect"
+	url := "https://www.google-analytics.com/mp/collect"
+	req, err := http.NewRequest("POST", url, bytes.NewBuffer(body))
+	if err != nil {
+		return err
+	}
+
+	q := req.URL.Query()
+	q.Add("measurement_id", a.measurementID)
+	q.Add("api_secret", a.secretKey)
+	req.URL.RawQuery = q.Encode()
+
+	response, err := http.DefaultClient.Do(req)
+	if err != nil {
+		return err
+	}
+	defer response.Body.Close()
+
+	//if dump, err := httputil.DumpResponse(response, true); err == nil {
+	//	log.Println(string(dump))
+	//}
+
+	return nil
+}
+
+// Startup sends application startup event
+func (a *gaService) Startup(version string) {
+	if !a.isValid() {
+		return
+	}
+
+	go a.sendEvent(GaEventItem{
+		Name: "startup",
+		Params: map[string]any{
+			"os":      runtime.GOOS,
+			"arch":    runtime.GOARCH,
+			"version": version,
+		},
+	})
+}

backend/services/storage_service.go

@@ -1,18 +0,0 @@
-package services
-
-import "sync"
-
-type storageService struct {
-}
-
-var storage *storageService
-var onceStorage sync.Once
-
-func Storage() *storageService {
-	if storage == nil {
-		onceStorage.Do(func() {
-			storage = &storageService{}
-		})
-	}
-	return storage
-}

go.mod

@@ -5,6 +5,7 @@ go 1.21
 require (
 	github.com/adrg/sysfont v0.1.2
 	github.com/andybalholm/brotli v1.0.5
+	github.com/google/uuid v1.3.1
 	github.com/redis/go-redis/v9 v9.2.1
 	github.com/vrischmann/userdir v0.0.0-20151206171402-20f291cebd68
 	github.com/wailsapp/wails/v2 v2.6.0
@@ -19,7 +20,6 @@ require (
 	github.com/cespare/xxhash/v2 v2.2.0 // indirect
 	github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f // indirect
 	github.com/go-ole/go-ole v1.3.0 // indirect
-	github.com/google/uuid v1.3.1 // indirect
 	github.com/jchv/go-winloader v0.0.0-20210711035445-715c2860da7e // indirect
 	github.com/labstack/echo/v4 v4.11.1 // indirect
 	github.com/labstack/gommon v0.4.0 // indirect

main.go

@@ -22,6 +22,7 @@ var assets embed.FS
 var icon []byte
 
 var version = "0.0.0"
+var gaMeasurementID, gaSecretKey string
 
 func main() {
 	// Create an instance of the app structure
@@ -55,6 +56,9 @@ func main() {
 		OnStartup: func(ctx context.Context) {
 			sysSvc.Start(ctx)
 			connSvc.Start(ctx)
+
+			services.GA().SetSecretKey(gaMeasurementID, gaSecretKey)
+			services.GA().Startup(version)
 		},
 		OnShutdown: func(ctx context.Context) {
 			connSvc.Stop(ctx)