Mdbc

6.0.0

Scripts/Mdbc.ArgumentCompleters.ps1


<#
.Synopsis
    Argument completers for Mdbc commands.
 
.Description
    The script registers Mdbc completers for command parameters:
 
        Connect-Mdbc
            -DatabaseName ..
            -CollectionName ..
 
        Add-MdbcData
        New-MdbcData
        Export-MdbcData
            -Property .., ..
 
    Completers can be used with:
 
    * PowerShell v5 native Register-ArgumentCompleter
    Simply invoke Mdbc.ArgumentCompleters.ps1, e.g. in a profile.
 
    * TabExpansionPlusPlus https://github.com/lzybkr/TabExpansionPlusPlus
    Put Mdbc.ArgumentCompleters.ps1 to TabExpansionPlusPlus module directory in
    order to be loaded automatically. Or invoke it after importing the module,
    e.g. in a profile.
 
    * TabExpansion2.ps1 https://www.powershellgallery.com/packages/TabExpansion2
    Put Mdbc.ArgumentCompleters.ps1 to the path in order to be loaded on the
    first completion. Or invoke after TabExpansion2.ps1, e.g. in a profile.
#>

Register-ArgumentCompleter -CommandName Connect-Mdbc -ParameterName DatabaseName -ScriptBlock {
    param($commandName, $parameterName, $wordToComplete, $commandAst, $boundParameters)

    if (!($ConnectionString = $boundParameters['ConnectionString'])) { $ConnectionString = '.' }

    @(Connect-Mdbc $ConnectionString *) -like "$wordToComplete*" | .{process{
        New-Object System.Management.Automation.CompletionResult $_, $_, 'ParameterValue', $_
    }}
}

Register-ArgumentCompleter -CommandName Connect-Mdbc -ParameterName CollectionName -ScriptBlock {
    param($commandName, $parameterName, $wordToComplete, $commandAst, $boundParameters)

    if (!($ConnectionString = $boundParameters['ConnectionString'])) { $ConnectionString = '.' }
    if (!($DatabaseName = $boundParameters['DatabaseName'])) { $DatabaseName = 'test' }

    @(Connect-Mdbc $ConnectionString $DatabaseName *) -like "$wordToComplete*" | .{process{
        New-Object System.Management.Automation.CompletionResult $_, $_, 'ParameterValue', $_
    }}
}

Register-ArgumentCompleter -CommandName Add-MdbcData, New-MdbcData, Export-MdbcData -ParameterName Property -ScriptBlock {
    $private:commandName, $private:parameterName, $private:wordToComplete, $private:commandAst, $private:boundParameters = $args

    $private:data = $boundParameters['InputObject']
    if (!$data) {
        $private:ast = $commandAst.Parent
        if ($ast -isnot [System.Management.Automation.Language.PipelineAst] -or $ast.PipelineElements.Count -ne 2) {
            return
        }

        try {
            $data = & ([scriptblock]::Create($ast.PipelineElements[0]))
        }
        catch {
            return
        }
    }

    $keys = [System.Collections.Generic.HashSet[object]]@()
    $pattern = "$wordToComplete*"
    foreach($_ in $data) {
        if ($_ -is [System.Collections.IDictionary]) {
            foreach($_ in $_.Keys -like $pattern) { $null = $keys.Add($_) }
        }
        elseif ($_) {
            foreach($_ in $_.PSObject.Properties.Match($pattern)) { $null = $keys.Add($_.Name) }
        }
    }

    $keys | Sort-Object -CaseSensitive | .{process{
        New-Object System.Management.Automation.CompletionResult $_, $_, 'ParameterValue', $_
    }}
}