package generators

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

type HobgoblinArrays struct {
	Nm1 []string `json:"nm1"`
	Nm2 []string `json:"nm2"`
	Nm3 []string `json:"nm3"`
	Nm4 []string `json:"nm4"`
	Nm5 []string `json:"nm5"`
	Nm6 []string `json:"nm6"`
	Nm7 []string `json:"nm7"`
	Nm8 []string `json:"nm8"`
}

func LoadHobgoblinArrays(path string) (HobgoblinArrays, error) {
	var arrays HobgoblinArrays
	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 HobgoblinName(arr *HobgoblinArrays, swearFilter func(string) bool) string {
	nTp := rand.Intn(5)
	rnd := rand.Intn(len(arr.Nm1))
	rnd2 := rand.Intn(len(arr.Nm2))
	rnd5 := rand.Intn(len(arr.Nm7))
	var nMs string
	if nTp == 0 {
		for arr.Nm1[rnd] == "" {
			rnd = rand.Intn(len(arr.Nm1))
		}
		nMs = arr.Nm1[rnd] + arr.Nm2[rnd2] + arr.Nm7[rnd5]
	} else {
		rnd3 := rand.Intn(len(arr.Nm3))
		rnd4 := rand.Intn(len(arr.Nm6))
		for arr.Nm3[rnd3] == arr.Nm1[rnd] || arr.Nm3[rnd3] == arr.Nm7[rnd5] {
			rnd3 = rand.Intn(len(arr.Nm3))
		}
		if nTp < 4 {
			nMs = arr.Nm1[rnd] + arr.Nm2[rnd2] + arr.Nm3[rnd3] + arr.Nm6[rnd4] + arr.Nm7[rnd5]
		} else {
			rnd6 := rand.Intn(len(arr.Nm5))
			rnd7 := rand.Intn(len(arr.Nm4))
			for arr.Nm3[rnd3] == arr.Nm5[rnd6] || arr.Nm5[rnd6] == arr.Nm7[rnd5] {
				rnd6 = rand.Intn(len(arr.Nm5))
			}
			nMs = arr.Nm1[rnd] + arr.Nm2[rnd2] + arr.Nm3[rnd3] + arr.Nm4[rnd7] + arr.Nm5[rnd6] + arr.Nm6[rnd4] + arr.Nm7[rnd5]
		}
	}
	if swearFilter == nil || !swearFilter(nMs) {
		return nMs
	}
	return ""
}

func GenerateHobgoblinNames(arr *HobgoblinArrays, swearFilter func(string) bool) []string {
	names := make([]string, 0, 10)
	for i := 0; i < 10; i++ {
		nMs := HobgoblinName(arr, swearFilter)
		for nMs == "" {
			nMs = HobgoblinName(arr, swearFilter)
		}
		if i > 4 {
			rnd := rand.Intn(len(arr.Nm8))
			nMs = nMs + " " + arr.Nm8[rnd]
		}
		names = append(names, nMs)
	}
	return names
}