sentinel example.ps1

function Invoke-SentinelWebRequest {
    [CmdletBinding()]
    param (
        [Parameter()]
        [String]
        $Server,
        [Parameter()]
        [String]
        $APIToken,
        [Parameter()]
        [String]
        $Target
    )
    $global:Headers = @{
        'Authorization' = "ApiToken $APIToken"
        'Content-Type'  = 'application/json'
    }
    $BaseURL = "$Server/web/api/v2.1/"
    if (-not($BaseURL.endsWith('/'))) {
        $BaseURL += '/'
    }
    if (-not([string]::IsNullOrEmpty($target))) {
        $URL = "$BaseURL$Target"
    } else {
        $URL = $BaseURL
    }
    $Response = Invoke-WebRequest -Uri $URL -Method 'GET' -Headers $global:Headers
    if ($response.headers['statuscode'] -ne 200) {
        Write-Output "ERROR: Could not get proper response. $($Response.Headers['StatusCode'])"
    }

    $Response = $Response.Content | ConvertFrom-Json
    return $response
}
function Get-InstallerFiles {
    [CmdletBinding()]
    param (
        [Parameter()]
        [string]
        $FolderPath = 'C:\Windows\Temp',
        [Parameter()]
        [string]
        $SiteToken,
        [Parameter()]
        [string]
        $APIToken,
        [Parameter()]
        [String]
        $Server
    )
    $Target = 'update/agent/packages?platformTypes=windows&status=ga&fileExtension=.msi&sortOrder=desc&limit=2'
    $Response = Invoke-SentinelWebRequest -APIToken "$APIToken" -Target "$Target" -Server "$Server"
    $Response = $Response.data | Where-Object { $_.osarch -eq '64 bit' }
    $Information = @{
        FileName     = $Response.FileName
        DownloadSize = $Response.FileSize
        Version      = "$($Response.MajorVersion) $($Response.MinorVersion)"
        Sha1         = $REsponse.Sha1
        DownloadURL  = $Response.Link
    }

    if ([string]::IsNullOrEmpty($Information)) {
        Write-Output 'ERROR: Failed to retrieve a response for the Agent'
        exit 1
    }
    $Filename = $Information.FileName
    $FilePath = Join-Path -Path "$FolderPath" "$fileName"
    if (Test-Path -Path "$FilePath") {
        $FileHash = (Get-FileHash -Path "$filePath" -Algorithm SHA1).hash
        if ($FileHash -eq $Information.Sha1) {
            return $filepath
        }
    } else {
        Invoke-WebRequest -Uri "$($Information.DownloadURL)" -OutFile "$FilePath" -UseBasicParsing -Headers $global:headers
        if (Test-Path -Path "$FilePath") {
            $FileHash = (Get-FileHash -Path "$filePath" -Algorithm SHA1).hash
            if ($FileHash -eq $Information.Sha1) {
                return $filepath
            }
        }
    }
    return $False
}