Public/Get-GW2StorySeasons.ps1

<#
    .SYNOPSIS
        Retrieves story seasons from the Guild Wars 2 API.
 
    .DESCRIPTION
        The Get-GW2StorySeasons cmdlet retrieves information about the story seasons in the Story Journal from the Guild Wars 2 API.
 
    .PARAMETER Ids
        The ID(s) of the seasons to retrieve. Can be a single ID, an array of IDs, or "all".
 
    .PARAMETER Page
        The page number to retrieve.
 
    .PARAMETER PageSize
        The number of results per page.
 
    .PARAMETER Lang
        The language to return localized text in. Defaults to "en".
        Valid values: "en", "es", "de", "fr", "zh".
 
    .EXAMPLE
        Get-GW2StorySeasons -Ids "215AAA0F-CD37-4F66-8BC0-3614B743B8A5"
        Retrieves information for the specified season ID.
 
    .EXAMPLE
        Get-GW2StorySeasons -Ids "all"
        Retrieves information for all story seasons.
 
    .NOTES
        API Endpoint: /v2/stories/seasons
    #>

function Get-GW2StorySeasons {
    [CmdletBinding()]
    param (
        [Parameter(Mandatory = $false)]
        [string[]]$Ids,

        [Parameter(Mandatory = $false)]
        [int]$Page,

        [Parameter(Mandatory = $false)]
        [int]$PageSize,

        [Parameter(Mandatory = $false)]
        [ValidateSet("en", "es", "de", "fr", "zh")]
        [string]$Lang
    )

    $Uri = "https://api.guildwars2.com/v2/stories/seasons"
    
    if ($Ids) {
        $Uri += "?ids=" + ($Ids -join ",")
    }

    if ($Page) {
        $Uri += "&page=$Page"
    }

    if ($PageSize) {
        $Uri += "&page_size=$PageSize"
    }

    if ($Lang) {
        $Uri += "&lang=$Lang"
    }

    try {
        Invoke-RestMethod -Uri $Uri -Method Get
    }
    catch {
        Write-Error "Failed to retrieve story seasons: $_"
    }
}