public/Get-BricklinkConfiguration.ps1

<#
.SYNOPSIS
Retrieves the BrickLink configuration items from the configuration file.

.DESCRIPTION
The Get-BlBricklinkConfiguration function reads the BrickLink configuration items from the configuration.json file located in the module's root folder. It decrypts the encrypted configuration items and returns the configuration object.

.PARAMETER None
This function does not accept any parameters.

.EXAMPLE
$config = Get-BlBricklinkConfiguration

This example calls the Get-BlBricklinkConfiguration function to retrieve the BrickLink configuration items and stores them in the $config variable.

#>

function Get-BricklinkConfiguration {
    [CmdletBinding()]
    param
    ()

    $ErrorActionPreference = 'Stop'

    function decrypt([string]$TextToDecrypt) {
        $secure = ConvertTo-SecureString $TextToDecrypt
        $hook = New-Object system.Management.Automation.PSCredential("test", $secure)
        $plain = $hook.GetNetworkCredential().Password
        return $plain
    }

    $encryptedItems = @(
        'password'
        'api_consumer_key'
        'api_consumer_secret'
        'api_token'
        'api_token_secret'
    )

    $config = Get-Content -Path "$script:rootModuleFolderPath\configuration.json" | ConvertFrom-Json
    if ($config.api_consumer_key -match 'bricklink consumer secret') {
        throw "Your Bricklink API and store credentials could not be found. Have you ran Save-BricklinkConfigurationItem yet to save them?"
    }

    $config.PSObject.Properties | ForEach-Object {
        $val = $_.Value
        if ($_.Name -in $encryptedItems -and $_.Value) {
            $val = decrypt($_.Value)
        }
        $config.($_.Name) = $val
    }
    $config
}