<#
.SYNOPSIS
	List crypto rates
.DESCRIPTION
	This PowerShell script queries the current crypto exchange rates from cryptocompare.com and lists it in USD/EUR/CNY/JPY.
.EXAMPLE
	PS> ./list-crypto-rates.ps1

	CRYPTOCURRENCY               US$                    €UR                    CN¥Y                    JPY
	--------------               ---                    ---                    ---                    ---
	1 Bitcoin (BTC) =            97309.81               94385.57               38800                  14798679.56
	...
.LINK
	https://github.com/fleschutz/PowerShell
.NOTES
	Author: Markus Fleschutz | License: CC0
#>

function ListCryptoRate { param([string]$Symbol, [string]$Name)
	$rates = (Invoke-WebRequest -URI "https://min-api.cryptocompare.com/data/price?fsym=$Symbol&tsyms=USD,EUR,CNY,JPY" -userAgent "curl" -useBasicParsing).Content | ConvertFrom-Json
	New-Object PSObject -property @{ 'CRYPTOCURRENCY' = "1 $Name ($Symbol) ="; 'US$' = "$($rates.USD)"; '€' = "$($rates.EUR)"; 'CN¥' = "$($rates.CNY)"; 'JP¥' = "$($rates.JPY)" }
}

function ListCryptoRates { 
	ListCryptoRate AVAX  "Avalanche"
	ListCryptoRate BNB   "Binance Coin"
	ListCryptoRate BTC   "Bitcoin"
	ListCryptoRate BCH   "Bitcoin Cash"
	ListCryptoRate BUSD  "Binance USD"
	ListCryptoRate ADA   "Cardano"
	ListCryptoRate LINK  "Chainlink"
	ListCryptoRate DOGE  "Dogecoin"
	ListCryptoRate GALA  "Gala"
	ListCryptoRate ETH   "Ethereum"
	ListCryptoRate LTC   "Litecoin"
	ListCryptoRate TRUMP "Official Trump"
	ListCryptoRate DOT   "Polkadot"
	ListCryptoRate MATIC "Polygon"
	ListCryptoRate SOL   "Solana"
	ListCryptoRate XLM   "Stellar"
	ListCryptoRate SUI   "Sui"
	ListCryptoRate LUNA  "Terra"
	ListCryptoRate USDT  "Tether"
	ListCryptoRate WBTC  "Wrapped Bitcoin"
	ListCryptoRate XRP   "XRP"
	ListCryptoRate UNI   "Uniswap"
	ListCryptoRate USDC  "USD Coin"
}

try {
	ListCryptoRates | Format-Table -property @{e='CRYPTOCURRENCY';width=28},'US$','€','CN¥','JP¥'
	Write-Host "(by https://www.cryptocompare.com • Crypto is volatile and unregulated • Capital at risk • Taxes may apply)"
	exit 0 # success
} catch {
	"⚠️ Error in line $($_.InvocationInfo.ScriptLineNumber): $($Error[0])"
	exit 1
}