PowerShell Script for notifying when a given crypto-currency's price is under a given threshold.

checkCryptoCurrency.ps1

param(
    $confPath = "./conf.txt"
)

while (1)
{

    $props = convertfrom-stringdata (get-content -path $confPath -raw)
    
    $period = [convert]::ToInt32($props.'app.interval', 10)
    
    $threshold = [convert]::ToInt32($props.'app.min', 10)

    $cryptoCurrency = $props.'app.cryptoCurrency'

    $currency = $props.'app.currency'

    $url = "https://api.coinbase.com/v2/exchange-rates?currency=$cryptoCurrency"
    $ethInfo = (New-Object System.Net.WebClient).DownloadString("$url") | ConvertFrom-Json
    $cryptoPriceInPounds = [decimal]$ethInfo.data.rates.$currency

    if ($cryptoPriceInPounds -lt $threshold) {
        [system.Reflection.Assembly]::LoadWithPartialName('System.Windows.Forms') | Out-Null

        $objNotifyIcon = New-Object System.Windows.Forms.NotifyIcon 

        $objNotifyIcon.Icon = "C:\tools\Scripts\edit_16x16.ico"

        $objNotifyIcon.BalloonTipIcon = "Info" 
        $objNotifyIcon.BalloonTipText = "Price: " + $cryptoPriceInPounds + " " + $currency
        $objNotifyIcon.BalloonTipTitle = "Buying " + $cryptoCurrency + "?"
 
        $objNotifyIcon.Visible = $True 
        $objNotifyIcon.ShowBalloonTip(1000)
    }
    sleep -sec $period
}

conf.txt

app.cryptoCurrency=ETH
app.currency=GBP
app.min=150
app.interval=10