PowerShell Demo

demo.psm1

# Save this file and import it using the command `Imort-Module '<path to file'`


$Script:Demo = @(
@'
$PSVersionTable
'@

@'
Get-Command *AzAccount*
'@

@'
Get-Command -Module Bicep
'@

@'
Get-Help ConvertTo-Json
'@

@'
Get-Help ConvertTo-Json -Full
'@

@'
Get-Help ConvertTo-Json -Parameter Depth
'@

@'
Update-Help -UICulture en-US
'@

@'
Push-Location 'C:\Windows'
'@

@'
Push-Location 'C:\Users'
'@

@'
Pop-Location
'@

@'
Get-ChildItem -File | Get-Member
'@

@'
Get-ChildItem -File
| Where-Object Length -gt 1MB
| Sort-Object -Property Length -Descending 
'@

@'
Get-ChildItem -File
| Where-Object Length -gt 1MB
| Sort-Object -Property Length -Descending 
| Select-Object -Property BaseName, Extension, Length
'@

@'
Invoke-RestMethod -Method GET -Uri 'https://swapi.py4e.com/api/people/'
'@

@'
Invoke-RestMethod -Method GET -Uri 'https://swapi.py4e.com/api/people/'
| Select-Object -Property results
'@

@'
Invoke-RestMethod -Method GET -Uri 'https://swapi.py4e.com/api/people/'
| Select-Object -ExpandProperty results
'@

@'
Invoke-RestMethod -Method GET -Uri 'https://swapi.py4e.com/api/people/'
| Select-Object -ExpandProperty results
| Select-Object -Property Name, Height, Mass
'@

@'
az account show
'@

@'
az account show | ConvertFrom-Json
'@

@'
[System.DateTime]::Now
'@

@'
[System.IO.Path]::Combine('one','two','three','four','five')
'@

@'
[System.Collections.ArrayList]::New
'@

@'
$List = [System.Collections.ArrayList]::New()
$List.Add('one')
$List
'@

@'
$List = [System.Collections.ArrayList]::New()
$null = $List.Add('one')
$List
'@

@'
using namespace System.Collections
$List = [ArrayList]::New()
$null = $List.Add('one')
$List
'@

@'
$name = 'Simon'
'@

@'
"My name is $name"
'@

@'
"It's $names turn"
'@

@'
"It's ${name}s turn"
'@

@'
"The time is $(Get-Date -Format 'HH:mm')"
'@

@'
help about_comparison_operators
'@

@'
'name' -contains 'n'
'@

@'
1,2,3 -contains 2
'@

@'
$true -eq 'true'
'@

@'
$true -eq 'false'
'@

@'
$array = @(1,2,3)
'@

@'
$hashtable = @{
    MyKey = 'MyValue'
}
'@

@'
[pscustomobject]$hashtable
'@

)

function randompause 
{
    $pause = Get-Random -Minimum 10 -Maximum 20
    Start-Sleep -Milliseconds $pause
}




















function Get-DemoIndex 
{
    [int][System.Environment]::GetEnvironmentVariable(
        'DEMO_GLOBALINDEX'
    ) ?? 0
}























function Set-Index ([int]$index = 0) 
{
    [System.Environment]::SetEnvironmentVariable(
        'DEMO_GLOBALINDEX', 
        $index
    )
}



















function Set-Demo
{
    param([string[]]$Demo)
    $Script:Demo = $Demo
    Set-Index
}



















function Get-Demo {
    [CmdletBinding()]
    [Alias('d')]
    param (
        [Parameter(Mandatory=$false)]
        [int]$index
    )
    Clear-Host
    if ($PSBoundParameters.ContainsKey('index')) {
        $CurrentIndex = $index
    }
    else {
        $CurrentIndex = Get-DemoIndex
    }
    
    if ($Script:Demo.Length -ge $CurrentIndex) {
        $Script:Demo[$CurrentIndex] | Set-Clipboard
    }
    else {
        Set-Clipboard -Value ''
    }
    Set-Index ($CurrentIndex + 1)
}



















function Reset-Demo {
    [Alias('r')]
    param(
        [int]$index = 0
    )
    Set-Index $index
    Clear-Host
}













try {
    $setPSReadLineKeyHandlerSplat = @{
        Chord = 'ctrl+d'
        BriefDescription = 'InsertDemoCode'
        Description = "Insert code from clipboard for demo purpose"
        ScriptBlock = {
            param($key, $arg)
            $CurrentIndex = Get-DemoIndex
            Set-Index ($CurrentIndex + 1)
            [string[]]$Commands = $Script:Demo[$CurrentIndex] -split [System.Environment]::NewLine
            for ($i = 0; $i -lt $Commands.Count-1; $i++) {
                for ($j = 0; $j -lt $Commands[$i].Length; $j++) {
                    [Microsoft.PowerShell.PSConsoleReadLine]::Insert($Commands[$i][$j])
                    randompause
                }
                # [Microsoft.PowerShell.PSConsoleReadLine]::Insert($Commands[$i])
                [Microsoft.PowerShell.PSConsoleReadLine]::AddLine()
            }
            for ($j = 0; $j -lt $Commands[$i].Length; $j++) {
                [Microsoft.PowerShell.PSConsoleReadLine]::Insert($Commands[-1][$j])
                randompause
            }
            # [Microsoft.PowerShell.PSConsoleReadLine]::Insert($Commands[-1])
        }
    }
    Set-PSReadLineKeyHandler @setPSReadLineKeyHandlerSplat
} catch {}

Set-Index 0
# Export-ModuleMember -Function 'Get-Demo', 'Set-Demo', 'Reset-Demo', 'Get-DemoIndex' -Alias 'd', 'r'