functions/Get-WUGProduct.ps1

<#
.SYNOPSIS
Retrieves product/system metadata from WhatsUp Gold.
 
.DESCRIPTION
Get-WUGProduct queries multiple WhatsUp Gold REST API product endpoints and returns a single object
containing installationId, timezone, version, and whoAmI details.
 
Covered endpoints:
  - /api/v1/product/api [GET]
  - /api/v1/product/installationId [GET]
  - /api/v1/product/timezone [GET]
  - /api/v1/product/version [GET]
  - /api/v1/product/whoAmI [GET]
 
.OUTPUTS
PSCustomObject
 
.EXAMPLE
Get-WUGProduct
 
.NOTES
Author: Jason Alberino (jason@wug.ninja)
Updated: 2026-03-06
#>

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

    begin {
        Write-Debug "Function: Get-WUGProduct -- Starting"

        if (-not $global:WhatsUpServerBaseURI) {
            Write-Error "WhatsUpServerBaseURI is not set. Please run Connect-WUGServer to establish a connection."
            return
        }

        if (-not $global:WUGBearerHeaders) {
            Write-Error -Message "Authorization header not set. Please run Connect-WUGServer first."
            try { Connect-WUGServer } catch { }
        }

        if (-not (Get-Command -Name Get-WUGAPIResponse -ErrorAction SilentlyContinue)) {
            Write-Error "Get-WUGAPIResponse was not found. Ensure the module is imported and/or functions are loaded."
            return
        }

        $baseUri = "$($global:WhatsUpServerBaseURI)/api/v1/product"
        Write-Debug "Base URI: $baseUri"

        $endpoints = [ordered]@{
            api            = "$baseUri/api"
            installationId = "$baseUri/installationId"
            timezone       = "$baseUri/timezone"
            version        = "$baseUri/version"
            whoAmI         = "$baseUri/whoAmI"
        }
    }

    process { }

    end {
        Write-Debug "Function: Get-WUGProduct -- Executing endpoint calls"

        $result = [ordered]@{}
        $errors = @()

        foreach ($key in $endpoints.Keys) {
            $uri = $endpoints[$key]
            Write-Debug "Calling endpoint '$key' => $uri"

            try {
                $resp = Get-WUGAPIResponse -Uri $uri -Method "GET"
                $result[$key] = $resp.data
                Write-Debug "Success '$key'"
            }
            catch {
                $msg = $_.Exception.Message
                Write-Debug "Failure '$key': $msg"

                $errors += [pscustomobject]@{
                    endpoint = $key
                    uri      = $uri
                    error    = $msg
                }

                $result[$key] = $null
            }
        }

        # ---- timezone: output only a friendly display name + ID ----
        $tzRaw = $result.timezone
        $tzId = $null
        $tzDisplayName = $null

        if ($tzRaw -is [string] -and $tzRaw.Contains(';')) {
            # <Id>;<BaseOffsetMinutes>;<DisplayName>;...
            $parts = $tzRaw.Split(';')
            if ($parts.Count -ge 3) {
                $tzId = $parts[0]
                $tzDisplayName = $parts[2]
            }
        }
        elseif ($tzRaw -is [string]) {
            $tzId = $tzRaw
        }

        # ---- version: flatten to a single string ----
        $versionRaw = $result.version
        $versionText = $null

        if ($null -eq $versionRaw) {
            $versionText = $null
        }
        elseif ($versionRaw -is [string]) {
            $versionText = $versionRaw
        }
        elseif ($versionRaw.PSObject.Properties.Name -contains 'values') {
            $vals = $versionRaw.values

            if ($vals -is [System.Collections.IEnumerable] -and -not ($vals -is [string])) {
                $lines = foreach ($v in $vals) {
                    if ($null -eq $v) { continue }

                    if ($v -is [string]) { $v; continue }

                    if ($v.PSObject.Properties.Name -contains 'name' -and $v.PSObject.Properties.Name -contains 'value') {
                        "{0}: {1}" -f $v.name, $v.value
                        continue
                    }

                    if ($v.PSObject.Properties.Name -contains 'key' -and $v.PSObject.Properties.Name -contains 'value') {
                        "{0}: {1}" -f $v.key, $v.value
                        continue
                    }

                    ($v | ConvertTo-Json -Depth 10 -Compress)
                }

                $lines = @($lines) | Where-Object { $_ -and $_.ToString().Trim() -ne "" }
                if ($lines.Count -gt 0) {
                    $versionText = ($lines -join "`n")
                }
            }
            else {
                $versionText = ($vals | Out-String).Trim()
            }
        }
        else {
            $versionText = ($versionRaw | ConvertTo-Json -Depth 10 -Compress)
        }

        $outObj = [pscustomobject]@{
            apiVersion     = $result.api

            installationId = $result.installationId

            timezone       = $tzDisplayName
            timezoneId     = $tzId

            version        = $versionText

            whoAmI         = $result.whoAmI
            errors         = $errors
        }

        Write-Debug ("Function: Get-WUGProduct -- Completed. ErrorCount={0}" -f $errors.Count)
        return $outObj
    }
}
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