Fixes config writer publishing invalid Icinga plain config

Author: LordHepipud

doc/100-General/10-Changelog.md

@@ -7,6 +7,14 @@ documentation before upgrading to a new release.
 
 Released closed milestones can be found on [GitHub](https://github.com/Icinga/icinga-powershell-framework/milestones?state=closed).
 
+## 1.11.1 (tbd)
+
+[Issues and PRs](https://github.com/Icinga/icinga-powershell-framework/milestone/29)
+
+### Bugfixes
+
+* [#659](https://github.com/Icinga/icinga-powershell-framework/pull/659) Fixes configuration writer which publishes invalid Icinga plain configuration files
+
 ## 1.11.0 (2023-08-01)
 
 [Issues and PRs](https://github.com/Icinga/icinga-powershell-framework/milestone/26)

lib/core/tools/Get-IcingaCheckCommandConfig.psm1

@@ -666,7 +666,11 @@ function Write-IcingaPlainConfigurationFiles()
                         $AddNewLine    = $FALSE;
                     }
                     [string]$Value = $CheckCommand.vars[$var];
-                    $IcingaConfig += [string]::Format('    vars.{0} = {1}{2}', $var, $Value.ToLower(), (New-IcingaNewLine));
+                    if ($CheckCommand.vars[$var] -Is [bool]) {
+                        $IcingaConfig += [string]::Format('    vars.{0} = {1}{2}', $var, $Value.ToLower(), (New-IcingaNewLine));
+                    } else {
+                        $IcingaConfig += [string]::Format('    vars.{0} = "{1}"{2}', $var, $Value.ToLower(), (New-IcingaNewLine));
+                    }
                 }
             }
         } else {