$AllProtocols = [System.Net.SecurityProtocolType]'Ssl3,Tls,Tls11,Tls12'
[System.Net.ServicePointManager]::SecurityProtocol = $AllProtocols

# Ignore SSL errors
#[System.Net.ServicePointManager]::ServerCertificateValidationCallback = { $true }

# Config
$baseurl = "https://asdf.asdf.com"
$username = "user"
$password = "pass"
$session = New-Object Microsoft.PowerShell.Commands.WebRequestSession
$useragent = [Microsoft.PowerShell.Commands.PSUserAgent]::Chrome

$onlinecount=0
$offlinecount=0

# Login to UniFi Controller
$postparams = ConvertTo-Json -InputObject @{username=$username;password=$password}
$result = Invoke-WebRequest -Uri "$($baseurl)/api/login" -ContentType "application/json" -Method POST -Body $postparams -SessionVariable session -UserAgent $useragent -UseBasicParsing
if( (ConvertFrom-Json -InputObject $result.Content).meta.rc -ne "ok" ) {
    Throw "Unable to login to UniFi Controller. $($result.RawContent)"
}

# Get list of all sites
$result = Invoke-WebRequest -Uri "$($baseurl)/api/self/sites" -Method GET -WebSession $session -UserAgent $useragent -UseBasicParsing
$sites = (ConvertFrom-Json -InputObject $result.Content).Data

foreach ($site in $sites) {
    # Query for status of all devices in the default site

    $result2 = Invoke-WebRequest -Uri "$($baseurl)/api/s/$($site.name)/stat/device" -Method POST -Body "" -WebSession $session -UserAgent $useragent -UseBasicParsing
    $status = (ConvertFrom-Json -InputObject $result2.Content)
    if( $status.meta.rc -ne "ok" ) {
        Throw "Unable to retrieve UniFi device status. $($result2.RawContent)"
    }

    Write-Host $site.desc

    # Loop through each device and output it's status
    ForEach ( $ap in $status.data ) {
        # Formatting for NAME
        if( [string]::IsNullOrEmpty($ap.name) ) {
            $apname = "(no name)"
        } else {
            $apname = $ap.name
        }

        # Formatting for Model
        $apmodel = "$($ap.type) $($ap.model)"
        # Format the status line
        $statusline = "$($apmodel.PadRight(10)) - $($ap.ip.PadRight(15)) ($($ap.mac.PadRight(17))) - v$($ap.version.PadRight(15)) - $($apname)"

        If( $ap.uptime -gt 0 ) {
            # Device is online
            Write-Host "ONLINE: $statusline"
        } Else {
            # Device is offline
            Write-Warning "OFFLINE: $statusline"
        }
    }
    Write-Host
}