package generators

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

type HarengonArrays 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"`
	Nm9  []string `json:"nm9"`
	Nm10 []string `json:"nm10"`
}

func LoadHarengonArrays(path string) (HarengonArrays, error) {
	var arrays HarengonArrays
	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 HarengonNameFemT(arr *HarengonArrays, swearFilter func(string) bool) string {
	rnd := rand.Intn(len(arr.Nm3))
	rnd2 := rand.Intn(len(arr.Nm4))
	nMs := arr.Nm3[rnd] + arr.Nm4[rnd2]
	if swearFilter == nil || !swearFilter(nMs) {
		return nMs
	}
	return ""
}

func HarengonNameMasT(arr *HarengonArrays, swearFilter func(string) bool) string {
	rnd := rand.Intn(len(arr.Nm1))
	rnd2 := rand.Intn(len(arr.Nm2))
	nMs := arr.Nm1[rnd] + arr.Nm2[rnd2]
	if swearFilter == nil || !swearFilter(nMs) {
		return nMs
	}
	return ""
}

func GenerateHarengonNames(arr *HarengonArrays, gender string, swearFilter func(string) bool) []string {
	names := make([]string, 0, 10)
	for i := 0; i < 10; i++ {
		var nMs string
		if gender == "female" {
			if i < 6 {
				nMs = HarengonNameFem(arr, swearFilter)
				for nMs == "" {
					nMs = HarengonNameFem(arr, swearFilter)
				}
			} else {
				nMs = HarengonNameFemT(arr, swearFilter)
				for nMs == "" {
					nMs = HarengonNameFemT(arr, swearFilter)
				}
			}
		} else {
			if i < 6 {
				nMs = HarengonNameFem(arr, swearFilter)
				for nMs == "" {
					nMs = HarengonNameFem(arr, swearFilter)
				}
			} else {
				nMs = HarengonNameMasT(arr, swearFilter)
				for nMs == "" {
					nMs = HarengonNameMasT(arr, swearFilter)
				}
			}
		}
		names = append(names, nMs)
	}
	return names
}

func HarengonNameFem(arr *HarengonArrays, swearFilter func(string) bool) string {
	nTp := rand.Intn(3)
	rnd := rand.Intn(len(arr.Nm5))
	rnd2 := rand.Intn(len(arr.Nm6))
	rnd3 := rand.Intn(len(arr.Nm7))
	rnd4 := rand.Intn(len(arr.Nm8))
	rnd5 := rand.Intn(len(arr.Nm10))
	for arr.Nm7[rnd3] == arr.Nm5[rnd] && arr.Nm10[rnd5] != "" {
		rnd3 = rand.Intn(len(arr.Nm7))
	}
	var nMs string
	if nTp < 2 {
		nMs = arr.Nm5[rnd] + arr.Nm6[rnd2] + arr.Nm7[rnd3] + arr.Nm8[rnd4] + arr.Nm10[rnd5]
	} else {
		nTp = rand.Intn(2)
		rnd6 := rand.Intn(len(arr.Nm8))
		rnd7 := rand.Intn(len(arr.Nm9))
		if nTp == 0 {
			nMs = arr.Nm5[rnd] + arr.Nm6[rnd2] + arr.Nm7[rnd3] + arr.Nm8[rnd4] + arr.Nm9[rnd7] + arr.Nm8[rnd6] + arr.Nm10[rnd5]
		} else {
			nMs = arr.Nm5[rnd] + arr.Nm6[rnd2] + arr.Nm9[rnd7] + arr.Nm8[rnd6] + arr.Nm7[rnd3] + arr.Nm8[rnd4] + arr.Nm10[rnd5]
		}
	}
	if swearFilter == nil || !swearFilter(nMs) {
		return nMs
	}
	return ""
}