From 7a496752f32edc147576939d89926f42466e94d5 Mon Sep 17 00:00:00 2001
From: albertony <12441419+albertony@users.noreply.github.com>
Date: Sun, 24 Jan 2021 12:28:39 +0100
Subject: [PATCH] fs: add support for flag --no-console on windows to hide the
 console window

---
 cmd/cmd.go                           |  5 +++++
 fs/config.go                         |  1 +
 fs/config/configflags/configflags.go |  1 +
 lib/terminal/hidden_other.go         |  7 +++++++
 lib/terminal/hidden_windows.go       | 19 +++++++++++++++++++
 5 files changed, 33 insertions(+)
 create mode 100644 lib/terminal/hidden_other.go
 create mode 100644 lib/terminal/hidden_windows.go

diff --git a/cmd/cmd.go b/cmd/cmd.go
index 7a93f159e..9ce1acd15 100644
--- a/cmd/cmd.go
+++ b/cmd/cmd.go
@@ -382,6 +382,11 @@ func initConfig() {
 	// Finish parsing any command line flags
 	configflags.SetFlags(ci)
 
+	// Hide console window
+	if ci.NoConsole {
+		terminal.HideConsole()
+	}
+
 	// Load filters
 	err := filterflags.Reload(ctx)
 	if err != nil {
diff --git a/fs/config.go b/fs/config.go
index 356479731..f913de579 100644
--- a/fs/config.go
+++ b/fs/config.go
@@ -121,6 +121,7 @@ type ConfigInfo struct {
 	DownloadHeaders        []*HTTPOption
 	Headers                []*HTTPOption
 	RefreshTimes           bool
+	NoConsole              bool
 }
 
 // NewConfig creates a new config with everything set to the default
diff --git a/fs/config/configflags/configflags.go b/fs/config/configflags/configflags.go
index e5fc527bf..2cdbbe3d7 100644
--- a/fs/config/configflags/configflags.go
+++ b/fs/config/configflags/configflags.go
@@ -124,6 +124,7 @@ func AddFlags(ci *fs.ConfigInfo, flagSet *pflag.FlagSet) {
 	flags.StringArrayVarP(flagSet, &downloadHeaders, "header-download", "", nil, "Set HTTP header for download transactions")
 	flags.StringArrayVarP(flagSet, &headers, "header", "", nil, "Set HTTP header for all transactions")
 	flags.BoolVarP(flagSet, &ci.RefreshTimes, "refresh-times", "", ci.RefreshTimes, "Refresh the modtime of remote files.")
+	flags.BoolVarP(flagSet, &ci.NoConsole, "no-console", "", ci.NoConsole, "Hide console window. Supported on Windows only.")
 }
 
 // ParseHeaders converts the strings passed in via the header flags into HTTPOptions
diff --git a/lib/terminal/hidden_other.go b/lib/terminal/hidden_other.go
new file mode 100644
index 000000000..2a15b21b1
--- /dev/null
+++ b/lib/terminal/hidden_other.go
@@ -0,0 +1,7 @@
+// +build !windows
+
+package terminal
+
+// HideConsole is only supported on windows
+func HideConsole() {
+}
diff --git a/lib/terminal/hidden_windows.go b/lib/terminal/hidden_windows.go
new file mode 100644
index 000000000..0745e87ed
--- /dev/null
+++ b/lib/terminal/hidden_windows.go
@@ -0,0 +1,19 @@
+// +build windows
+
+package terminal
+
+import (
+	"syscall"
+)
+
+// HideConsole hides the console window and activates another window
+func HideConsole() {
+	getConsoleWindow := syscall.NewLazyDLL("kernel32.dll").NewProc("GetConsoleWindow")
+	showWindow := syscall.NewLazyDLL("user32.dll").NewProc("ShowWindow")
+	if getConsoleWindow.Find() == nil && showWindow.Find() == nil {
+		hwnd, _, _ := getConsoleWindow.Call()
+		if hwnd != 0 {
+			showWindow.Call(hwnd, 0)
+		}
+	}
+}