package generators

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

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

func LoadKoboldArrays(path string) (KoboldArrays, error) {
	var arrays KoboldArrays
	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 KoboldNameMas(arr *KoboldArrays, i int, swearFilter func(string) bool) string {
	rnd := rand.Intn(len(arr.Nm1))
	rnd2 := rand.Intn(len(arr.Nm2))
	rnd4 := rand.Intn(len(arr.Nm4))
	var nMs string
	if i < 4 {
		for rnd < 4 {
			rnd = rand.Intn(len(arr.Nm1))
		}
		for rnd4 < 5 || arr.Nm4[rnd4] == arr.Nm1[rnd] {
			rnd4 = rand.Intn(len(arr.Nm4))
		}
		nMs = arr.Nm1[rnd] + arr.Nm2[rnd2] + arr.Nm4[rnd4]
	} else {
		rnd3 := rand.Intn(len(arr.Nm3))
		rnd5 := rand.Intn(len(arr.Nm2))
		if rnd < 4 {
			for rnd4 < 5 {
				rnd4 = rand.Intn(len(arr.Nm4))
			}
		}
		for arr.Nm3[rnd3] == arr.Nm1[rnd] || arr.Nm3[rnd3] == arr.Nm4[rnd4] {
			rnd3 = rand.Intn(len(arr.Nm3))
		}
		nMs = arr.Nm1[rnd] + arr.Nm2[rnd2] + arr.Nm3[rnd3] + arr.Nm2[rnd5] + arr.Nm4[rnd2]
	}
	if swearFilter == nil || !swearFilter(nMs) {
		return nMs
	}
	return ""
}

func GenerateKoboldNames(arr *KoboldArrays, swearFilter func(string) bool) []string {
	names := make([]string, 0, 10)
	for i := 0; i < 10; i++ {
		nMs := KoboldNameMas(arr, i, swearFilter)
		for nMs == "" {
			nMs = KoboldNameMas(arr, i, swearFilter)
		}
		names = append(names, nMs)
	}
	return names
}