Functions for powershell.config.json

PowerShellConfig.psm1

#requires -Modules Metadata
function Get-PowerShellConfig {
    <#
        .SYNOPSIS
            Get the PowerShell.config.json as a hashtable
        .EXAMPLE
            Get-PowerShellConfig

            Returns the user's PowerShell Config (usually just what experiments you've enabled)
        .EXAMPLE
            Get-PowerShellConfig -Scope Machine

            Returns the Machine (or AllUsers) PowerShell Config
    #>
    [CmdletBinding()]
    param(
        # Which config file to read
        [ValidateSet("User","Machine","CurrentUser","LocalMachine")]
        $Scope = "User"
    )
    $Path = if ($Scope -match "User") {
        Join-Path (Split-Path $Profile) powershell.config.json
    } else {
        Join-Path $PSHOME powershell.config.json
    }
    Write-Information $Path

    if (Test-Path $path) {
        Get-Content $path | ConvertFrom-Json -AsHashtable
    } else {
        @{}
    }
}

function Set-PowerShellConfig {
    <#
        .SYNOPSIS
            Set values in the PowerShell.config.json (must be elevated to set -Scope Machine)
        .EXAMPLE
            Set-PowerShellConfig -PSModulePath (Convert-Path $Env:LOCALAPPDATA\PowerShell\Modules)

            Change the Documents\PowerShell\Modules entry in your PSModulePath to be AppData\Local\PowerShell\Modules instead. Note this only changes the PSModulePath that PowerShell calculates, not your environment variables, nor anything your Profile adds.
    #>
    [CmdletBinding()]
    param(
        # Which config file to set
        [ValidateSet("User","Machine","CurrentUser","LocalMachine")]
        $Scope = "User",

        [Parameter(Position=0, ValueFromPipeline)]
        [hashtable]$InputObject = @{},

        [ValidateScript({if (!(Test-Path -PathType Container $_)) {
            throw "PSModulePath must be a folder!"
        } $true })]
        [string]$PSModulePath
    )
    # Strip common parameters if they're on here, so we can pass through everything else
    $CommonParameters = @("Scope", "InputObject") +
                        [System.Management.Automation.Cmdlet]::CommonParameters +
                        [System.Management.Automation.Cmdlet]::OptionalCommonParameters

    foreach ($name in @($PSBoundParameters.Keys.Where{ $_ -in $CommonParameters })) {
        $null = $PSBoundParameters.Remove($name)
    }
    
    $Config = Get-PowerShellConfig $Scope -Iv Path
    | Update-Object $InputObject
    | Update-Object $PSBoundParameters

    if ($DebugPreference -eq "Continue") {
        Write-Debug "Set '$Path' content to:`n$($Config | ConvertTo-Json)"
    }
    $Config | ConvertTo-Json | Set-Content $Path
}