fix cross compilation in goreleaser/drone

Necessary for go-autostart to work on windows. Tray will be enabled by
default for x86_64 windows/linux binaries.

autostart.go

@@ -0,0 +1,69 @@
+// +build tray
+
+package main
+
+import (
+	"log"
+	"os"
+	"path/filepath"
+
+	"github.com/emersion/go-autostart"
+	"github.com/getlantern/systray"
+)
+
+type Autostart struct {
+	as       *autostart.App
+	enabled  bool
+	menuitem *systray.MenuItem
+	clicked  chan bool
+}
+
+func NewAutostart(name, displayname, trayName, trayTooltip string) *Autostart {
+	a := &Autostart{
+		as: &autostart.App{
+			Name:        name,
+			DisplayName: displayname,
+		},
+		enabled: true,
+		clicked: make(chan bool),
+	}
+	a.menuitem = systray.AddMenuItemCheckbox(trayName, trayTooltip, a.as.IsEnabled())
+	command := os.Args
+	command[0], _ = filepath.Abs(command[0])
+	// Make sure to replace any relative paths with absolute ones
+	pathArgs := []string{"-d", "-data", "-c", "-config"}
+	for i := 1; i < len(command); i++ {
+		isPath := false
+		for _, p := range pathArgs {
+			if command[i-1] == p {
+				isPath = true
+				break
+			}
+		}
+		if isPath {
+			command[i], _ = filepath.Abs(command[i])
+		}
+	}
+	a.as.Exec = command
+	return a
+}
+
+func (a *Autostart) HandleCheck() {
+	for range a.menuitem.ClickedCh {
+		if !a.menuitem.Checked() {
+			if err := a.as.Enable(); err != nil {
+				log.Printf("Failed to enable autostart on login: %v", err)
+			} else {
+				a.menuitem.Check()
+				log.Printf("Enabled autostart")
+			}
+		} else {
+			if err := a.as.Disable(); err != nil {
+				log.Printf("Failed to disable autostart on login: %v", err)
+			} else {
+				a.menuitem.Uncheck()
+				log.Printf("Disabled autostart")
+			}
+		}
+	}
+}