modules/ModularAWSPowerShell/AWS.Tools.Common.Completers.psm1

# Auto-generated argument completers for parameters of SDK ConstantClass-derived type used in cmdlets.
# Do not modify this file; it may be overwritten during version upgrades.

$psMajorVersion = $PSVersionTable.PSVersion.Major
if ($psMajorVersion -eq 2) 
{ 
	Write-Verbose "Dynamic argument completion not supported in PowerShell version 2; skipping load."
	return 
}

# PowerShell's native Register-ArgumentCompleter cmdlet is available on v5.0 or higher. For lower
# version, we can use the version in the TabExpansion++ module if installed.
$registrationCmdletAvailable = ($psMajorVersion -ge 5) -Or !((Get-Command Register-ArgumentCompleter -ea Ignore) -eq $null)

# internal function to perform the registration using either cmdlet or manipulation
# of the options table
function _awsArgumentCompleterRegistration()
{
    param
    (
        [scriptblock]$scriptBlock,
        [hashtable]$param2CmdletsMap
    )

    if ($registrationCmdletAvailable)
    {
        foreach ($paramName in $param2CmdletsMap.Keys)
        {
             $args = @{
                "ScriptBlock" = $scriptBlock
                "Parameter" = $paramName
            }

            $cmdletNames = $param2CmdletsMap[$paramName]
            if ($cmdletNames -And $cmdletNames.Length -gt 0)
            {
                $args["Command"] = $cmdletNames
            }

            Register-ArgumentCompleter @args
        }
    }
    else
    {
        if (-not $global:options) { $global:options = @{ CustomArgumentCompleters = @{ }; NativeArgumentCompleters = @{ } } }

        foreach ($paramName in $param2CmdletsMap.Keys)
        {
            $cmdletNames = $param2CmdletsMap[$paramName]

            if ($cmdletNames -And $cmdletNames.Length -gt 0)
            {
                foreach ($cn in $cmdletNames)
                {
                    $fqn =  [string]::Concat($cn, ":", $paramName)
                    $global:options['CustomArgumentCompleters'][$fqn] = $scriptBlock
                }
            }
            else
            {
                $global:options['CustomArgumentCompleters'][$paramName] = $scriptBlock
            }
        }

        $function:tabexpansion2 = $function:tabexpansion2 -replace 'End\r\n{', 'End { if ($null -ne $options) { $options += $global:options} else {$options = $global:options}'
    }
}

# To allow for same-name parameters of different ConstantClass-derived types 
# each completer function checks on command name concatenated with parameter name.
# Additionally, the standard code pattern for completers is to pipe through 
# sort-object after filtering against $wordToComplete but we omit this as our members 
# are already sorted.



$AWS_RegionCompleter = {
	param ($commandName, $parameterName, $wordToComplete, $commandAst, $fakeBoundParameter)

	$regionHash = @{ }

    # Similar to Get-AWSRegion
	$regions = [Amazon.RegionEndpoint]::EnumerableAllRegions
	foreach ($r in $regions)
	{
		$regionHash.Add($r.SystemName, $r.DisplayName)
	}

	$regionHash.Keys |
	Sort-Object |
	Where-Object { $_ -like "$wordToComplete*" } |
	ForEach-Object {
		New-Object System.Management.Automation.CompletionResult $_, $_, 'ParameterValue', $regionHash[$_]
	}
}

_awsArgumentCompleterRegistration $AWS_RegionCompleter @{ "Region"=@() }

$AWS_ProfileNameCompleter = {
	param ($commandName, $parameterName, $wordToComplete, $commandAst, $fakeBoundParameter)

	# allow for new user with no profiles set up yet
	$profiles = Get-AWSCredentials -ListProfileDetail | select -expandproperty ProfileName
	if ($profiles)
	{
		$profiles |
		Sort-Object |
		Where-Object { $_ -like "$wordToComplete*" } |
		ForEach-Object {
			New-Object System.Management.Automation.CompletionResult $_, $_, 'ParameterValue', $_
		}
	}
}

_awsArgumentCompleterRegistration $AWS_ProfileNameCompleter @{ "ProfileName"=@() }