functions/templating/New-PSMDDotNetProject.ps1

function New-PSMDDotNetProject
{
<#
    .SYNOPSIS
        Wrapper function around 'dotnet new'
     
    .DESCRIPTION
        This function is a wrapper around the dotnet.exe application with the parameter 'new'.
        It can be used to create projects from templates, as well as to administrate templates.
     
    .PARAMETER TemplateName
        The name of the template to create
     
    .PARAMETER List
        List the existing templates.
     
    .PARAMETER Help
        Ask for help / documentation.
        Particularly useful when dealing with project types that have a lot of options.
     
    .PARAMETER Force
        Overwrite existing files.
     
    .PARAMETER Name
        The name of the project to create
     
    .PARAMETER Output
        The folder in which to create it.
        Note: This folder will automatically be te root folder of the project.
        If this folder doesn't exist yet, it will be created.
        When used with -Force, it will automatically purge all contents.
     
    .PARAMETER Install
        Install the specified template from the VS marketplace.
     
    .PARAMETER Uninstall
        Uninstall an installed template.
     
    .PARAMETER Arguments
        Additional arguments to pass to the application.
        Generally used for parameters when creating a project from a template.
     
    .PARAMETER Confirm
        If this switch is enabled, you will be prompted for confirmation before executing any operations that change state.
     
    .PARAMETER WhatIf
        If this switch is enabled, no actions are performed but informational messages will be displayed that explain what would happen if the command were to run.
     
    .EXAMPLE
        PS C:\> dotnetnew -l
     
        Lists all installed templates.
     
    .EXAMPLE
        PS C:\> dotnetnew mvc foo F:\temp\projects\foo -au Windows --no-restore
     
        Creates a new MVC project named "foo" in folder "F:\Temp\projects\foo"
        - It will set authentication to windows
        - It will skip the automatic restore of the project on create
#>

    [CmdletBinding(SupportsShouldProcess = $true, DefaultParameterSetName = 'Create')]
    Param (
        [Parameter(Position = 0, Mandatory = $true, ParameterSetName = 'Create')]
        [Parameter(Position = 0, ParameterSetName = 'List')]
        [string]
        $TemplateName,
        
        [Parameter(ParameterSetName = 'List')]
        [Alias('l')]
        [switch]
        $List,
        
        [Alias('h')]
        [switch]
        $Help,
        
        [switch]
        $Force,
        
        [Parameter(Position = 1, ParameterSetName = 'Create')]
        [Alias('n')]
        [string]
        $Name,
        
        [Parameter(Position = 2, ParameterSetName = 'Create')]
        [Alias('o')]
        [string]
        $Output,
        
        [Parameter(Mandatory = $true, ParameterSetName = 'Install')]
        [Alias('i')]
        [string]
        $Install,
        
        [Parameter(Mandatory = $true, ParameterSetName = 'Uninstall')]
        [Alias('u')]
        [string]
        $Uninstall,
        
        [Parameter(ValueFromRemainingArguments = $true)]
        [Alias('a')]
        [string[]]
        $Arguments
    )
    
    begin
    {
        $parset = $PSCmdlet.ParameterSetName
        Write-PSFMessage -Level InternalComment -Message "Active parameterset: $parset" -Tag 'start'
        
        if (-not (Get-Command dotnet.exe))
        {
            throw "Could not find dotnet.exe! This should automatically be available on machines with Visual Studio installed."
        }
        
        $dotNetArgs = @()
        switch ($parset)
        {
            'Create'
            {
                if (Test-PSFParameterBinding -ParameterName TemplateName) { $dotNetArgs += $TemplateName }
                if ($Help) { $dotNetArgs += "-h" }
                if (Test-PSFParameterBinding -ParameterName Name)
                {
                    $dotNetArgs += "-n"
                    $dotNetArgs += $Name
                }
                if (Test-PSFParameterBinding -ParameterName Output)
                {
                    $dotNetArgs += "-o"
                    $dotNetArgs += $Output
                }
                if ($Force) { $dotNetArgs += "--Force" }
            }
            'List'
            {
                if (Test-PSFParameterBinding -ParameterName TemplateName) { $dotNetArgs += $TemplateName }
                $dotNetArgs += '-l'
                if ($Help) { $dotNetArgs += "-h" }
            }
            'Install'
            {
                $dotNetArgs += '-i'
                $dotNetArgs += $Install
                if ($Help) { $dotNetArgs += '-h'}
            }
            'Uninstall'
            {
                $dotNetArgs += '-u'
                $dotNetArgs += $Uninstall
                if ($Help) { $dotNetArgs += '-h' }
            }
        }
        
        foreach ($item in $Arguments)
        {
            $dotNetArgs += $item
        }
        Write-PSFMessage -Level Verbose -Message "Resolved arguments: $($dotNetArgs -join " ")" -Tag 'argument','start'
    }
    process
    {
        if ($PSCmdlet.ShouldProcess("dotnet", "Perform action: $parset"))
        {
            if ($parset -eq 'Create')
            {
                if ($Output)
                {
                    if ((Test-Path $Output) -and $Force) { $null = New-Item $Output -ItemType Directory -Force -ErrorAction Stop }
                    if (-not (Test-Path $Output)) { $null = New-Item $Output -ItemType Directory -Force -ErrorAction Stop }
                }
            }
            Write-PSFMessage -Level Verbose -Message "Executing with arguments: $($dotNetArgs -join " ")" -Tag 'argument', 'start'
            & dotnet.exe new $dotNetArgs
        }
    }
}

New-Alias -Name dotnetnew -Value New-PSMDDotNetProject -Option AllScope -Scope Global -ErrorAction Ignore