Linux app: set single-user token

.vscode/launch.json

@@ -20,6 +20,14 @@
         "program": "${workspaceFolder}/win",
         "cwd": "${workspaceFolder}/win/temp",
         },
+        {
+            "name": "Go: Launch Linux App",
+            "type": "go",
+            "request": "launch",
+            "mode": "debug",
+            "program": "${workspaceFolder}/linux",
+            "cwd": "${workspaceFolder}/linux/dist/focalboard-app",
+        },
         {
             "name": "Go: Test Current File",
             "type": "go",

linux/go.mod

@@ -2,4 +2,7 @@ module github.com/mattermost/focalboard/linux
 
 go 1.15
 
-require github.com/webview/webview v0.0.0-20200724072439-e0c01595b361
+require (
+	github.com/google/uuid v1.2.0
+	github.com/webview/webview v0.0.0-20200724072439-e0c01595b361
+)

linux/go.sum

@@ -1,2 +1,4 @@
+github.com/google/uuid v1.2.0 h1:qJYtXnJRWmpe7m/3XlyhrsLrEURqHRM2kxzoxXqyUDs=
+github.com/google/uuid v1.2.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
 github.com/webview/webview v0.0.0-20200724072439-e0c01595b361 h1:e0+/fQY5l9NdCwPsEg9S8AgE5lFhZ/6UX+b2KkpIBFg=
 github.com/webview/webview v0.0.0-20200724072439-e0c01595b361/go.mod h1:rpXAuuHgyEJb6kXcXldlkOjU6y4x+YcASKKXJNUhh0Y=

linux/main.go

@@ -2,16 +2,20 @@ package main
 
 import (
 	"context"
+	"fmt"
 	"log"
 	"os"
 	"os/exec"
 	"strconv"
 
+	"github.com/google/uuid"
 	"github.com/webview/webview"
 )
 
+var sessionToken string = "su-" + uuid.New().String()
+
 func runServer(ctx context.Context) {
-	cmd := exec.CommandContext(ctx, "./focalboard-server", "--monitorpid", strconv.FormatInt(int64(os.Getpid()), 10), "--single-user")
+	cmd := exec.CommandContext(ctx, "./focalboard-server", "--monitorpid", strconv.FormatInt(int64(os.Getpid()), 10), "-single-user", sessionToken)
 	cmd.Stdout = os.Stdout
 	err := cmd.Run()
 	if err != nil {
@@ -29,6 +33,10 @@ func main() {
 
 	w.SetTitle("Focalboard")
 	w.SetSize(1024, 768, webview.HintNone)
+
+	script := fmt.Sprintf("localStorage.setItem('sessionId', '%s');", sessionToken)
+	w.Init(script)
+
 	w.Navigate("http://localhost:8088")
 	w.Run()
 	cancel()