fun getInput(day: Int, year: Int = LocalDate.now().year, alternate: String = ""): String {
    val inputFile = File("src/main/kotlin/org/gristle/adventOfCode/y$year/d$day/input$alternate.txt")
    if (!inputFile.exists()) {
        if (alternate != "") throw IllegalArgumentException("Sample input specified but not provided!")
        inputFile.parentFile.mkdirs()
        val url = URL("https://adventofcode.com/$year/day/$day/input")
        val connection = url.openConnection() as HttpURLConnection
        connection.setRequestProperty("Cookie", "session=$SESSION")
        connection.setRequestProperty(
            "User-Agent",
            "github.com/nbanman/Play2022/blob/master/src/main/kotlin/org/gristle/adventOfCode/generate/Generate.kt by [email protected]"
        )
        try {
            connection.connect()
            check(connection.responseCode == 200) { "${connection.responseCode} ${connection.responseMessage}" }
            connection.inputStream.use { input ->
                inputFile.outputStream().use { output ->
                    input.copyTo(output)
                }
                inputFile.setReadOnly()
            }
        } finally {
            connection.disconnect()
        }
    }
    return inputFile.readText().stripCarriageReturns().trimEnd { it == '\n' }
}