import { that } from "./global"

const secureRandom = new java.security.SecureRandom()

that.crypto = {
    getRandomValues(array: Int8Array | Uint8Array | Int16Array | Uint16Array | Int32Array | Uint32Array) {
        for (let i = 0; i < array.length; i++) {
            switch (array.constructor.name) {
                case "Int8Array":
                    array[i] = secureRandom.nextInt(256) - 128
                    break
                case "Uint8Array":
                    array[i] = secureRandom.nextInt(256)
                    break
                case "Int16Array":
                    array[i] = secureRandom.nextInt(Math.pow(2, 16)) - Math.pow(2, 15)
                    break
                case "Uint16Array":
                    array[i] = secureRandom.nextInt(Math.pow(2, 16))
                    break
                case "Int32Array":
                    array[i] = secureRandom.nextLong() % Math.pow(2, 32) - Math.pow(2, 31)
                    break
                case "Uint32Array":
                    array[i] = secureRandom.nextLong() % Math.pow(2, 32)
                    break
                default:
                    array[i] = secureRandom.nextInt(256)
            }
        }
        return array
    }
}