Private/Resolve-Expiry.ps1
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function Resolve-Expiry { <# .SYNOPSIS Resolve a string into a number of milliseconds from now. .DESCRIPTION Edge accepts expiry in terms of milliseconds-from-now. This function resolves strings like '120d' and '2016-12-10' into the correct number of milliseconds. Or, if you pass a bare number, it will interpret it as seconds, and return the equivalent milliseconds value. .PARAMETER Value The string to convert. .EXAMPLE Resolve-Expiry 120d #> [cmdletbinding()] PARAM( [Parameter(Mandatory=$True)][string]$Value ) $result = -1 $regex1 = New-Object System.Text.RegularExpressions.Regex ('^([1-9][0-9]*)([smhdwy])$') $regex2 = New-Object System.Text.RegularExpressions.Regex ('^([1-9][0-9]*)$') $match = $regex1.Match($Value) if ($match.Success) { $multipliers = @{ s = 1 m = 60 h = 60 * 60 d = 60 * 60 * 24 w = 60 * 60 * 24 * 7 y = 60 * 60 * 24 * 365 } $result = ($match.Groups[1].Value -as [int]) * ($multipliers[ $match.Groups[2].Value ]) * 1000 } elseif ($Value -match $regex2) { ## just a bare number - evaluate it as seconds $result = ($Value -as [int]) * 1000; } else { # variable to hold parsed date [datetime] $parsedDate = New-Object DateTime $possibleFormats = @( 'yyyy-MM-dd', 'dd-MM-yyyy') foreach ($format in $possibleFormats) { if ($result -lt 0) { if([DateTime]::TryParseExact($Value, $format, [System.Globalization.CultureInfo]::InvariantCulture, [System.Globalization.DateTimeStyles]::None, [ref] $parsedDate)) { $result = ($parsedDate - [DateTime]::Today).TotalMilliseconds } } } } $result } |