PS-HueCycle

# PowerShell script to randomly set a bulb to a random color (from a pre-defined list) and random brightness.

function Hue-Command([string]$light, [string]$func, [string]$json)
{
    # Convert post data to UTF8.
    $post = [System.Text.Encoding]::UTF8.GetBytes($json)

    # Define location of Hue bridge, could just as easily be passed to the function via variable.
    $url = "http://192.168.1.114/api/58d35ff5cd80afcc09d4b77e70567590/lights/{0}/{1}" -f $light,$func

    # Build WebRequest. Make sure to set the type to PUT, the content to text/plain and the length just in case. May be able to get away without this but why bother.
    $http = [System.Net.WebRequest]::Create($url)
    $http.Method = "PUT"
    $http.ContentType = "text/plain"
    $http.ContentLength = $post.Length
    $http.ServicePoint.Expect100Continue = $false

    # Create, comit and close stream.
    $stream = $http.GetRequestStream()
    $stream.Write($post, 0, $post.Length)
    $stream.Close()

    # Capture response, if you don't care if it fails or not you could probably skip this, but...
    [System.Net.WebResponse] $response = $http.GetResponse();
    $rs = $response.GetResponseStream()
    $read = New-Object "System.IO.StreamReader" -ArgumentList $rs
    $result = $read.ReadToEnd()

    # Punt the WebRequest response.
    return $result
}

# Variable used for limit tracking.
[int]$cvar = 1

# Pre-Defined list of desired colors.
$color = @("[0.1855,0.0765]", "[0.5916,0.3764]", "[0.6473,0.3309]", "[0.4401,0.2215]", "[0.1855,0.0765]", "[0.6363,0.3352]")

# At 500 this will run for 83.33 minutes, set higher or lower accordingly, or change to while($cvar) to run indefinitely.
while($cvar -lt 500)
{
    $bri = Get-Random -Minimum 20 -Maximum 254
    # Set -Maximum one higher than the number of bulbs you have.
    $bulb = Get-Random -Minimum 1 -Maximum 4
    $shift = $color | Get-Random
    "Shift"+$shift
    # Whatever command you want to pass, put it here. Not limited to brightness or color.
    Hue-Command $bulb "state" "{`"bri`":$bri, `"xy`":$shift}"
    Start-Sleep -Seconds 10
    $cvar = $cvar+1
}