package generators

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

type OrcArrays 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"`
}

func LoadOrcArrays(path string) (OrcArrays, error) {
	var arrays OrcArrays
	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 OrcNameFem(arr *OrcArrays, i int, swearFilter func(string) bool) string {
	rnd := rand.Intn(len(arr.Nm5))
	rnd2 := rand.Intn(len(arr.Nm6))
	rnd3 := rand.Intn(len(arr.Nm8))
	var nFm string
	if i < 4 {
		for rnd < 4 {
			rnd = rand.Intn(len(arr.Nm5))
		}
		for rnd3 < 5 || arr.Nm8[rnd3] == arr.Nm5[rnd] {
			rnd3 = rand.Intn(len(arr.Nm8))
		}
		nFm = arr.Nm5[rnd] + arr.Nm6[rnd2] + arr.Nm8[rnd3]
	} else {
		rnd4 := rand.Intn(len(arr.Nm7))
		rnd5 := rand.Intn(len(arr.Nm6))
		for arr.Nm7[rnd4] == arr.Nm8[rnd3] {
			rnd4 = rand.Intn(len(arr.Nm7))
		}
		nFm = arr.Nm5[rnd] + arr.Nm6[rnd2] + arr.Nm7[rnd4] + arr.Nm6[rnd5] + arr.Nm8[rnd3]
	}
	if swearFilter != nil && swearFilter(nFm) {
		return ""
	}
	return nFm
}

func OrcNameMas(arr *OrcArrays, i int, swearFilter func(string) bool) string {
	rnd := rand.Intn(len(arr.Nm1))
	rnd2 := rand.Intn(len(arr.Nm2))
	rnd3 := rand.Intn(len(arr.Nm4))
	var nMs string
	if i < 4 {
		for rnd < 3 || arr.Nm1[rnd] == arr.Nm4[rnd3] {
			rnd = rand.Intn(len(arr.Nm1))
		}
		nMs = arr.Nm1[rnd] + arr.Nm2[rnd2] + arr.Nm4[rnd3]
	} else {
		rnd4 := rand.Intn(len(arr.Nm3))
		rnd5 := rand.Intn(len(arr.Nm2))
		for arr.Nm3[rnd4] == arr.Nm1[rnd] || arr.Nm3[rnd4] == arr.Nm4[rnd3] {
			rnd4 = rand.Intn(len(arr.Nm3))
		}
		nMs = arr.Nm1[rnd] + arr.Nm2[rnd2] + arr.Nm3[rnd4] + arr.Nm2[rnd5] + arr.Nm4[rnd3]
	}
	if swearFilter != nil && swearFilter(nMs) {
		return ""
	}
	return nMs
}

func OrcSurname(arr *OrcArrays) string {
	rSr := rand.Intn(2)
	if rSr == 0 {
		return "The " + arr.Nm9[rand.Intn(len(arr.Nm9))]
	}
	return arr.Nm10[rand.Intn(len(arr.Nm10))] + " " + arr.Nm11[rand.Intn(len(arr.Nm11))]
}

func GenerateOrcNames(arr *OrcArrays, gender string, swearFilter func(string) bool) []string {
	names := make([]string, 0, 10)
	for i := 0; i < 10; i++ {
		var n string
		if gender == "female" {
			n = OrcNameFem(arr, i, swearFilter)
			for n == "" {
				n = OrcNameFem(arr, i, swearFilter)
			}
		} else {
			n = OrcNameMas(arr, i, swearFilter)
			for n == "" {
				n = OrcNameMas(arr, i, swearFilter)
			}
		}
		n = n + " " + OrcSurname(arr)
		names = append(names, n)
	}
	return names
}