Added first draft to create new CheckCommands over CLI

lib/core/tools/New-IcingaCheckCommand.psm1

@@ -0,0 +1,93 @@
+function New-IcingaCheckCommand()
+{
+    param(
+        [string]$Name = '',
+        [array]$Arguments    = @(
+            'Warning',
+            'Critical',
+            '[switch]NoPerfData',
+            'Verbose'
+        ),
+        [array]$ImportLib    = @()
+    );
+
+    if ([string]::IsNullOrEmpty($Name) -eq $TRUE) {
+        throw 'Please specify a command name';
+    }
+
+    if ($Name -match 'Invoke' -or $Name -match 'IcingaCheck') {
+        throw 'Please specify a command name only without PowerShell Cmdlet naming';
+    }
+
+    [string]$CommandName = [string]::Format(
+        'Invoke-IcingaCheck{0}',
+        (Get-Culture).TextInfo.ToTitleCase($Name.ToLower())
+    );
+
+    [string]$CommandFile = [string]::Format(
+        '{0}.psm1',
+        $CommandName
+    );
+
+    [string]$ScriptFile = Join-Path -Path (Get-IcingaPluginDir) -ChildPath $CommandFile;
+
+    if ((Test-Path $ScriptFile) -eq $TRUE) {
+        throw 'This Check-Command does already exist.';
+    }
+
+    Add-Content -Path $ScriptFile -Value 'Import-IcingaLib icinga\plugin;';
+
+    foreach ($Library in $ImportLib) {
+        Add-Content -Path $ScriptFile -Value "Import-IcingaLib $Library;";
+    }
+
+    Add-Content -Path $ScriptFile -Value '';
+    Add-Content -Path $ScriptFile -Value "function $CommandName()";
+    Add-Content -Path $ScriptFile -Value "{";
+
+    if ($Arguments.Count -ne 0) {
+        Add-Content -Path $ScriptFile -Value "    param(";
+        [int]$index = $Arguments.Count - 1;
+        foreach ($argument in $Arguments) {
+
+            if ($argument.Contains('$') -eq $FALSE) {
+                if ($argument.Contains(']') -eq $TRUE) {
+                    $splittedArguments = $argument.Split(']');
+                    $argument = [string]::Format('{0}]${1}', $splittedArguments[0], $splittedArguments[1]);
+                } else {
+                    $argument = [string]::Format('${0}', $argument);
+                }
+            }
+
+            if ($index -ne 0) {
+                [string]$content = [string]::Format('{0},', $argument);
+            } else {
+                [string]$content = [string]::Format('{0}', $argument);
+            }
+            Add-Content -Path $ScriptFile -Value "        $content";
+
+            $index -= 1;
+        }
+        Add-Content -Path $ScriptFile -Value "    );";
+    }
+
+    Add-Content -Path $ScriptFile -Value "";
+    Add-Content -Path $ScriptFile -Value "}";
+
+    Write-Host ([string]::Format('The Check-Command "{0}" was successfully added.', $CommandName));
+
+    # Try to open the default Editor for the new Cmdlet
+    $DefaultEditor = (Get-ItemProperty -Path 'HKCU:\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.psm1\OpenWithList' -Name a).a;
+    #$DefaultEditor = $DefaultEditor.Replace('.exe', '');
+
+    Write-Host ([string]::IsNullOrEmpty($DefaultEditor));
+    Write-Host ((Get-Command $DefaultEditor -ErrorAction SilentlyContinue));
+    Write-Host ((Test-Path $DefaultEditor));
+
+    if ([string]::IsNullOrEmpty($DefaultEditor) -eq $FALSE -And ((Get-Command $DefaultEditor -ErrorAction SilentlyContinue) -eq $null) -And ((Test-Path $DefaultEditor) -eq $FALSE)) {
+        Write-Host 'No default editor for .psm1 files found. Specify a default editor to automaticly open the newly generated check plugin.';
+        return;
+    }
+
+    & $DefaultEditor "$ScriptFile";
+}