package generators

import (
	"encoding/json"
	"math/rand"
	"os"
	"time"
)

type ChangelingArrays struct {
	Nm1 []string `json:"nm1"`
	Nm2 []string `json:"nm2"`
	Nm3 []string `json:"nm3"`
}

func LoadChangelingArrays(path string) (*ChangelingArrays, error) {
	file, err := os.Open(path)
	if err != nil {
		return nil, err
	}
	defer file.Close()
	var arrays ChangelingArrays
	if err := json.NewDecoder(file).Decode(&arrays); err != nil {
		return nil, err
	}
	return &arrays, nil
}

func ChangelingNameMas(arr *ChangelingArrays, checkSwear func(string) bool) string {
	rand.Seed(time.Now().UnixNano())
	rnd := rand.Intn(len(arr.Nm1))
	rnd2 := rand.Intn(len(arr.Nm2))
	rnd3 := rand.Intn(len(arr.Nm3))
	for arr.Nm1[rnd] == arr.Nm3[rnd3] {
		rnd3 = rand.Intn(len(arr.Nm3))
	}
	nMs := arr.Nm1[rnd] + arr.Nm2[rnd2] + arr.Nm3[rnd3]
	if checkSwear != nil && checkSwear(nMs) {
		return ""
	}
	return nMs
}