Public/Get-GW2Traits.ps1

<#
.SYNOPSIS
Retrieves trait information from the Guild Wars 2 API.
 
.DESCRIPTION
Calls the Guild Wars 2 API v2 /traits endpoint.
- If no parameters are provided, returns a list of all available trait IDs.
- If 'Ids' is provided, returns objects containing details for the specified traits.
- If 'All' is specified, returns all available traits.
 
.PARAMETER Ids
Optional. A list of trait IDs (integers) to retrieve.
Example: 1, 214
 
.PARAMETER All
Optional. If set, retrieves all traits.
 
.PARAMETER Lang
Optional. The language to return results in (en, es, de, fr, ko, zh).
 
.EXAMPLE
Get-GW2Traits
Returns a list of all trait IDs.
 
.EXAMPLE
Get-GW2Traits -Ids 214
Returns details for the specified trait.
 
.EXAMPLE
Get-GW2Traits -All
Returns details for all traits.
 
.NOTES
- Requires network access to api.guildwars2.com.
- This is a public endpoint and does not require an API key.
#>

function Get-GW2Traits {
    param (
        [Parameter(Mandatory = $false)]
        [int[]]$Ids,

        [Parameter(Mandatory = $false)]
        [switch]$All,

        [Parameter(Mandatory = $false)]
        [ValidateSet("en", "es", "de", "fr", "ko", "zh")]
        [string]$Lang
    )
    
    $url = "https://api.guildwars2.com/v2/traits"

    if ($All) {
        $url = $url + "?ids=all"
    }
    elseif ($Ids) {
        # Join IDs with commas for the query parameter
        $idString = $Ids -join ','
        $url = $url + "?ids=$idString"
    }

    if ($Lang) {
        if ($url.Contains("?")) {
            $url = $url + "&lang=$Lang"
        }
        else {
            $url = $url + "?lang=$Lang"
        }
    }

    $response = Invoke-RestMethod -Uri $url -Method Get
    
    return $response
}