package generators

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

type GenasiArrays struct {
	Nm1 []string `json:"nm1"`
	Nm2 []string `json:"nm2"`
	Nm3 []string `json:"nm3"`
	Nm4 []string `json:"nm4"`
}

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

func GenerateGenasiNames(arr GenasiArrays, swearFilter func(string) bool) []string {
	// Copy slices to avoid mutating the original arrays
	nm1 := append([]string{}, arr.Nm1...)
	nm2 := append([]string{}, arr.Nm2...)
	nm3 := append([]string{}, arr.Nm3...)
	nm4 := append([]string{}, arr.Nm4...)
	var names []string
	for i := 0; i < 12; i++ {
		var n string
		if i < 3 {
			if len(nm1) == 0 {
				continue
			}
			rnd := rand.Intn(len(nm1))
			n = nm1[rnd]
			nm1 = append(nm1[:rnd], nm1[rnd+1:]...)
		} else if i < 6 {
			if len(nm2) == 0 {
				continue
			}
			rnd := rand.Intn(len(nm2))
			n = nm2[rnd]
			nm2 = append(nm2[:rnd], nm2[rnd+1:]...)
		} else if i < 9 {
			if len(nm3) == 0 {
				continue
			}
			rnd := rand.Intn(len(nm3))
			n = nm3[rnd]
			nm3 = append(nm3[:rnd], nm3[rnd+1:]...)
		} else {
			if len(nm4) == 0 {
				continue
			}
			rnd := rand.Intn(len(nm4))
			n = nm4[rnd]
			nm4 = append(nm4[:rnd], nm4[rnd+1:]...)
		}
		if swearFilter != nil && swearFilter(n) {
			continue
		}
		names = append(names, n)
	}
	return names
}