A small Kotlin file to generate a passphrase

passphrase.kt

package com.velogica.passwords

import org.apache.http.client.fluent.Request
import java.util.*

/**
 * Take a list of words, extract three at random, do some switcheraoos to the last word
 */
class PasswordGenerator {

    val wordsFileRaw = "https://enter_your_url_to_words/funny_words.txt"

    fun getWords(): List<String> {

        val response = Request.Get(wordsFileRaw).execute().returnContent()
        return response.asString().split('\n')
    }

    companion object {

        @JvmStatic
        fun main(args: Array<String>) {

            val passwordGenerator = PasswordGenerator()
            val passwordList  = passwordGenerator.getWords().pick(3)
            val mutableList = passwordList.toMutableList()
            mutableList[passwordList.lastIndex] = passwordize(passwordList.last())
            println(mutableList.joinToString(" "))
        }

    }

}

fun <T> List<T>.pick(num: Int): List<T> {
    Collections.shuffle(this)
    return this.subList(0, num)
}

fun passwordize(source : String) : String {

    val map = mapOf("o" to "0", "i" to "1", "e" to "3", "a" to "8")
    var resultString = source.capitalize()
    for ((a,b) in map) {
        resultString = resultString.replaceFirst(a, b)
    }
    return resultString
}

<dependencies>
        <dependency>
            <groupId>org.apache.httpcomponents</groupId>
            <artifactId>httpclient</artifactId>
            <version>4.5.2</version>
        </dependency>
        <dependency>
            <groupId>org.apache.httpcomponents</groupId>
            <artifactId>fluent-hc</artifactId>
            <version>4.5.2</version>
        </dependency>
    </dependencies>