package generators

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

type GoblinArrays 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"`
	Nm11 []string `json:"nm11"`
	Nm12 []string `json:"nm12"`
}

func LoadGoblinArrays(path string) (GoblinArrays, error) {
	var arrays GoblinArrays
	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 GoblinNameMas(arr *GoblinArrays, swearFilter func(string) bool) string {
	nTp := rand.Intn(3)
	rnd := rand.Intn(len(arr.Nm1))
	rnd2 := rand.Intn(len(arr.Nm2))
	rnd5 := rand.Intn(len(arr.Nm4))
	if nTp == 0 {
		for arr.Nm1[rnd] == "" {
			rnd = rand.Intn(len(arr.Nm1))
		}
		for arr.Nm4[rnd5] == "" {
			rnd5 = rand.Intn(len(arr.Nm4))
		}
		nMs := arr.Nm1[rnd] + arr.Nm2[rnd2] + arr.Nm4[rnd5]
		if swearFilter == nil || !swearFilter(nMs) {
			return nMs
		}
	} else {
		rnd3 := rand.Intn(len(arr.Nm3))
		rnd4 := rand.Intn(len(arr.Nm2))
		for arr.Nm3[rnd3] == arr.Nm1[rnd] || arr.Nm3[rnd3] == arr.Nm4[rnd5] {
			rnd3 = rand.Intn(len(arr.Nm3))
		}
		nMs := arr.Nm1[rnd] + arr.Nm2[rnd2] + arr.Nm3[rnd3] + arr.Nm2[rnd4] + arr.Nm4[rnd5]
		if swearFilter == nil || !swearFilter(nMs) {
			return nMs
		}
	}
	return ""
}

func GoblinNameFem(arr *GoblinArrays, swearFilter func(string) bool) string {
	nTp := rand.Intn(5)
	rnd := rand.Intn(len(arr.Nm5))
	rnd2 := rand.Intn(len(arr.Nm6))
	rnd5 := rand.Intn(len(arr.Nm9))
	if nTp == 0 {
		for arr.Nm5[rnd] == "" {
			rnd = rand.Intn(len(arr.Nm5))
		}
		for arr.Nm9[rnd5] == "" {
			rnd5 = rand.Intn(len(arr.Nm9))
		}
		nMs := arr.Nm5[rnd] + arr.Nm6[rnd2] + arr.Nm9[rnd5]
		if swearFilter == nil || !swearFilter(nMs) {
			return nMs
		}
	} else {
		rnd3 := rand.Intn(len(arr.Nm7))
		rnd4 := rand.Intn(len(arr.Nm6))
		for arr.Nm7[rnd3] == arr.Nm5[rnd] || arr.Nm7[rnd3] == arr.Nm9[rnd5] {
			rnd3 = rand.Intn(len(arr.Nm7))
		}
		if nTp < 4 {
			nMs := arr.Nm5[rnd] + arr.Nm6[rnd2] + arr.Nm7[rnd3] + arr.Nm6[rnd4] + arr.Nm9[rnd5]
			if swearFilter == nil || !swearFilter(nMs) {
				return nMs
			}
		} else {
			rnd6 := rand.Intn(len(arr.Nm8))
			rnd7 := rand.Intn(len(arr.Nm6))
			for arr.Nm7[rnd3] == arr.Nm8[rnd6] || arr.Nm8[rnd6] == arr.Nm9[rnd5] {
				rnd6 = rand.Intn(len(arr.Nm8))
			}
			nMs := arr.Nm5[rnd] + arr.Nm6[rnd2] + arr.Nm7[rnd3] + arr.Nm6[rnd4] + arr.Nm8[rnd6] + arr.Nm6[rnd7] + arr.Nm9[rnd5]
			if swearFilter == nil || !swearFilter(nMs) {
				return nMs
			}
		}
	}
	return ""
}

func GenerateGoblinNames(arr *GoblinArrays, gender string, swearFilter func(string) bool) []string {
	names := make([]string, 0, 10)
	for i := 0; i < 10; i++ {
		var nMs string
		if i < 5 {
			if gender == "female" {
				nMs = GoblinNameFem(arr, swearFilter)
				for nMs == "" {
					nMs = GoblinNameFem(arr, swearFilter)
				}
			} else {
				nMs = GoblinNameMas(arr, swearFilter)
				for nMs == "" {
					nMs = GoblinNameMas(arr, swearFilter)
				}
			}
		} else {
			nTp := rand.Intn(2)
			if nTp == 0 {
				rnd := rand.Intn(len(arr.Nm10))
				nMs = arr.Nm10[rnd]
			} else {
				rnd := rand.Intn(len(arr.Nm11))
				rnd2 := rand.Intn(len(arr.Nm12))
				if arr.Nm11[rnd][len(arr.Nm11[rnd])-1] == 'y' || arr.Nm11[rnd][len(arr.Nm11[rnd])-1] == 'e' {
					for arr.Nm12[rnd2][0] == 'a' || arr.Nm12[rnd2][0] == 'e' {
						rnd2 = rand.Intn(len(arr.Nm12))
					}
				}
				nMs = arr.Nm11[rnd] + arr.Nm12[rnd2]
			}
		}
		names = append(names, nMs)
	}
	return names
}