package main

import (
	"bytes"
	"crypto/rand"
	"embed"
	"flag"
	"fmt"
	"math/big"
	"strings"

	"github.com/atotto/clipboard"
)

var (
	//go:embed resources
	res embed.FS
	// embed the resources/nouns.txt & resources/verbs.txt files as arrays of strings split by newlines
	nouns []string
	verbs []string
)

var count int
var copy bool

func init() {
	nounsContents, _ := res.ReadFile("resources/nouns.txt")
	nouns = strings.Split(string(nounsContents), "\n")

	verbsContents, _ := res.ReadFile("resources/verbs.txt")
	verbs = strings.Split(string(verbsContents), "\n")

	flag.IntVar(&count, "n", 5, "number of nouns and verbs to print")
	flag.BoolVar(&copy, "c", false, "copies the output to the clipboard")
}

func main() {
	flag.Parse()
	var output bytes.Buffer

	for i := 0; i < count; i++ {
		if i > 0 {
			output.WriteString("\n")
		}
		randomNounIdx, _ := rand.Int(rand.Reader, big.NewInt(int64(len((nouns)))))
		randomVerbIdx, _ := rand.Int(rand.Reader, big.NewInt(int64(len((verbs)))))
		var username = fmt.Sprintf("%s-%s", verbs[randomVerbIdx.Int64()], nouns[randomNounIdx.Int64()])
		output.WriteString(username)
	}

	if copy {
		clipboard.WriteAll(output.String())
	}

	fmt.Println(output.String())
}