function Get-GpfsPool {
    [CmdletBinding(DefaultParameterSetName = 'All')]
    param(
        [Parameter(Mandatory, Position = 0)]
        [string]$FilesystemName,

        [Parameter(Mandatory, ParameterSetName = 'ByName', Position = 1)]
        [string]$PoolName
    )

    if ($PSCmdlet.ParameterSetName -eq 'ByName') {
        Invoke-GpfsApiRequest -Method GET -Endpoint "filesystems/$FilesystemName/pools/$PoolName"
    }
    else {
        Invoke-GpfsApiRequest -Method GET -Endpoint "filesystems/$FilesystemName/pools"
    }
}

function New-GpfsPool {
    [CmdletBinding(SupportsShouldProcess)]
    param(
        [Parameter(Mandatory, Position = 0)]
        [string]$FilesystemName,

        [Parameter(Mandatory)]
        [hashtable]$Settings
    )

    if ($PSCmdlet.ShouldProcess($FilesystemName, 'Create pool')) {
        Invoke-GpfsApiRequest -Method POST -Endpoint "filesystems/$FilesystemName/pools" -Body $Settings
    }
}

function Set-GpfsPool {
    [CmdletBinding(SupportsShouldProcess)]
    param(
        [Parameter(Mandatory, Position = 0)]
        [string]$FilesystemName,

        [Parameter(Mandatory, Position = 1)]
        [string]$PoolName,

        [Parameter(Mandatory)]
        [hashtable]$Settings
    )

    if ($PSCmdlet.ShouldProcess($PoolName, 'Update pool')) {
        Invoke-GpfsApiRequest -Method PUT -Endpoint "filesystems/$FilesystemName/pools/$PoolName" -Body $Settings
    }
}

function Remove-GpfsPool {
    [CmdletBinding(SupportsShouldProcess, ConfirmImpact = 'High')]
    param(
        [Parameter(Mandatory, Position = 0)]
        [string]$FilesystemName,

        [Parameter(Mandatory, Position = 1)]
        [string]$PoolName
    )

    if ($PSCmdlet.ShouldProcess($PoolName, 'Remove pool')) {
        Invoke-GpfsApiRequest -Method DELETE -Endpoint "filesystems/$FilesystemName/pools/$PoolName"
    }
}