PSCalendar.psm1

#functions based on code from Lee Holmes
# http://www.leeholmes.com/blog/2008/12/03/showing-calendars-in-your-oof-messages/

#dot source the calendar functions
Get-Childitem $PSScriptRoot\functions\*.ps1 -Exclude dev.ps1 |
Foreach-Object {
    . $_.Fullname
}

#define a hashtable of ANSI escapes to use in the calendar
if ($IsCoreCLR) {
    $esc = "`e"
} else {
    $esc = [Char]27
}

$PSCalendarConfiguration = @{
    Title     = "$esc[38;5;3m"
    DayOfWeek = "$esc[1;4;36m"
    Today     = "$esc[91m"
    Highlight = "$esc[92m"
}

#define an auto completer for the Month parameter
Register-ArgumentCompleter -CommandName Get-Calendar, Show-Calendar,Get-NCalendar -ParameterName Month -ScriptBlock {
    param($commandName, $parameterName, $wordToComplete, $commandAst, $fakeBoundParameter)

    #get month names, filtering out blanks
    [system.globalization.cultureinfo]::CurrentCulture.dateTimeFormat.monthnames | Where-Object { $_ -match "\w+" -and $_ -match "$WordToComplete" } |
    ForEach-Object {
        [System.Management.Automation.CompletionResult]::new($_.Trim(), $_.Trim(), 'ParameterValue', $_)
    }
}

#define an auto completer for the Year parameter
Register-ArgumentCompleter -CommandName Get-Calendar, Show-Calendar,Get-NCalendar -ParameterName Year -ScriptBlock {
    param($commandName, $parameterName, $wordToComplete, $commandAst, $fakeBoundParameter)

    $first = (Get-Date).Year
    $last = (Get-Date).AddYears(5).Year
    $first..$last |
        ForEach-Object {
            [System.Management.Automation.CompletionResult]::new($_, $_, 'ParameterValue', $_)
        }
}

#Export appropriate module members based on whether the user is running Windows or not.
If ($IsWindows -OR ($PSEdition -eq 'Desktop')) {
    Export-ModuleMember -Function 'Show-PSCalendarHelp','Get-Calendar',
    'Show-Calendar', 'Show-GuiCalendar', 'Get-PSCalendarConfiguration',
    'Set-PSCalendarConfiguration','Get-NCalendar','Get-MonthName' -Alias 'cal', 'scal', 'gcal', 'ncal'

    #define an autocompleter for background color
    Register-ArgumentCompleter -CommandName Show-GuiCalendar -ParameterName BackgroundColor -ScriptBlock {
        param($commandName, $parameterName, $wordToComplete, $commandAst, $fakeBoundParameter)

        Try {
            Add-Type -AssemblyName PresentationFramework -ErrorAction Stop
            Add-Type -AssemblyName PresentationCore -ErrorAction Stop

            [System.Windows.Media.Brushes].GetProperties().Name |
            ForEach-Object {
                [System.Management.Automation.CompletionResult]::new($_, $_, 'ParameterValue', $_)
            }
        }
        Catch {
            #if assemblies can't be loaded don't do anything
        }
    }
}
else {
    Export-ModuleMember -Function 'Show-PSCalendarHelp', 'Get-Calendar',
    'Show-Calendar', 'Get-PSCalendarConfiguration',
    'Set-PSCalendarConfiguration','Get-MonthName' -Alias scal
}

#use this version in verbose output to reflect module version
$modver = (Test-ModuleManifest $PSScriptroot\PSCalendar.psd1).Version