package generators

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

type TritonArrays 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"`
	Nm13 []string `json:"nm13"`
}

func LoadTritonArrays(path string) (TritonArrays, error) {
	var arr TritonArrays
	file, err := os.Open(path)
	if err != nil {
		return arr, err
	}
	defer file.Close()
	decoder := json.NewDecoder(file)
	if err := decoder.Decode(&arr); err != nil {
		return arr, err
	}
	return arr, nil
}

func tritonSurname(a TritonArrays, r *rand.Rand) string {
	for {
		rnd := r.Intn(len(a.Nm9))
		rnd2 := r.Intn(len(a.Nm10))
		rnd3 := r.Intn(len(a.Nm11))
		rnd4 := r.Intn(len(a.Nm12))
		rnd5 := r.Intn(len(a.Nm13))
		if a.Nm11[rnd3] != a.Nm9[rnd] && a.Nm11[rnd3] != a.Nm13[rnd5] {
			return a.Nm9[rnd] + a.Nm10[rnd2] + a.Nm11[rnd3] + a.Nm12[rnd4] + a.Nm13[rnd5] + "ath"
		}
	}
}

func tritonNameFem(a TritonArrays, r *rand.Rand, i int) string {
	for {
		rnd := r.Intn(len(a.Nm4))
		rnd2 := r.Intn(len(a.Nm5))
		rnd3 := r.Intn(len(a.Nm6))
		rnd4 := r.Intn(len(a.Nm8))
		if a.Nm6[rnd3] != a.Nm4[rnd] {
			if i < 5 {
				return a.Nm4[rnd] + a.Nm5[rnd2] + a.Nm6[rnd3] + a.Nm8[rnd4] + "n"
			} else {
				rnd5 := r.Intn(len(a.Nm5))
				rnd6 := r.Intn(len(a.Nm7))
				if a.Nm7[rnd6] != a.Nm6[rnd3] {
					return a.Nm4[rnd] + a.Nm5[rnd2] + a.Nm6[rnd3] + a.Nm5[rnd5] + a.Nm7[rnd6] + a.Nm8[rnd4] + "n"
				}
			}
		}
	}
}

func tritonNameMas(a TritonArrays, r *rand.Rand) string {
	for {
		rnd := r.Intn(len(a.Nm1))
		rnd2 := r.Intn(len(a.Nm2))
		rnd3 := r.Intn(len(a.Nm3))
		if a.Nm1[rnd] != a.Nm3[rnd3] {
			return a.Nm1[rnd] + a.Nm2[rnd2] + a.Nm3[rnd3] + a.Nm2[rnd2] + "s"
		}
	}
}

func GenerateTritonNames(arr *TritonArrays, gender string, swearFilter func(string) bool) []string {
	names := make([]string, 0, 10)
	r := rand.New(rand.NewSource(time.Now().UnixNano()))
	for i := 0; i < 10; i++ {
		surname := tritonSurname(*arr, r)
		var name string
		if gender == "female" {
			name = tritonNameFem(*arr, r, i) + " " + surname
		} else {
			name = tritonNameMas(*arr, r) + " " + surname
		}
		for name == "" || swearFilter(name) {
			surname = tritonSurname(*arr, r)
			if gender == "female" {
				name = tritonNameFem(*arr, r, i) + " " + surname
			} else {
				name = tritonNameMas(*arr, r) + " " + surname
			}
		}
		names = append(names, name)
	}
	return names
}