1 files changed, 63 insertions, 0 deletions
diff --git a/Start-Activity.ps1 b/Start-Activity.ps1
new file mode 100644
index 0000000..e4a981e
--- /dev/null
+++ b/Start-Activity.ps1
@@ -0,0 +1,63 @@
+Add-Type -AssemblyName System.Windows.Forms
+
+Add-Type @"
+using System;
+using System.Runtime.InteropServices;
+public static class IdleTime {
+    [StructLayout(LayoutKind.Sequential)]
+    public struct LASTINPUTINFO {
+        public uint cbSize;
+        public uint dwTime;
+    }
+
+    [DllImport("user32.dll")]
+    public static extern bool GetLastInputInfo(ref LASTINPUTINFO plii);
+
+    public static uint GetIdleTime() {
+        LASTINPUTINFO lii = new LASTINPUTINFO();
+        lii.cbSize = (uint)System.Runtime.InteropServices.Marshal.SizeOf(typeof(LASTINPUTINFO));
+        GetLastInputInfo(ref lii);
+        return ((uint)Environment.TickCount - lii.dwTime) / 1000; // seconds
+    }
+}
+"@
+
+function Start-Activity {
+    [CmdletBinding(DefaultParameterSetName="Activity")]
+    param(
+        [Parameter(Mandatory=$true, ParameterSetName="Activity")]
+        [double]$Hours,
+
+        [Parameter(Mandatory=$true, ParameterSetName="Activity")]
+        [double]$IntervalSeconds,
+
+        [Parameter(Mandatory=$true, ParameterSetName="TestIdle", HelpMessage="Prints idle time continuously.")]
+        [switch]$TestIdle
+    )
+
+    if ($PSCmdlet.ParameterSetName -eq "TestIdle") {
+        Write-Host "Idle monitoring started. Press Ctrl+C to stop."
+        while ($true) {
+            $idleSec = [IdleTime]::GetIdleTime()
+            Write-Host ("Idle time: {0} seconds" -f $idleSec) -NoNewline
+            Write-Host "`r" -NoNewline
+            Start-Sleep -Seconds 1
+        }
+    }
+    else {
+        Write-Host "Activity started"
+        $endTime = (Get-Date).AddHours($Hours)
+
+        while ((Get-Date) -lt $endTime) {
+            [System.Windows.Forms.SendKeys]::SendWait("+")
+            Start-Sleep -Milliseconds 100
+            Start-Sleep -Seconds $IntervalSeconds
+
+            $remaining = $endTime - (Get-Date)
+            Write-Host ("Time left: {0:hh\:mm\:ss}" -f $remaining) -NoNewline
+            Write-Host "`r" -NoNewline
+        }
+
+        Write-Host "`nActivity finished"
+    }
+}