package generators

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

type VedalkenArrays 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 LoadVedalkenArrays(path string) (VedalkenArrays, error) {
	var arr VedalkenArrays
	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 vedalkenNameMas(a VedalkenArrays, r *rand.Rand) string {
	nTp := r.Intn(3)
	rnd := r.Intn(len(a.Nm1))
	rnd2 := r.Intn(len(a.Nm2))
	rnd3 := r.Intn(len(a.Nm3))
	rnd4 := r.Intn(len(a.Nm2))
	rnd5 := r.Intn(len(a.Nm5))
	if nTp < 2 {
		for a.Nm1[rnd] == a.Nm3[rnd3] || a.Nm3[rnd3] == a.Nm5[rnd5] {
			rnd3 = r.Intn(len(a.Nm3))
		}
		return a.Nm1[rnd] + a.Nm2[rnd2] + a.Nm3[rnd3] + a.Nm2[rnd4] + a.Nm5[rnd5]
	} else {
		rnd6 := r.Intn(len(a.Nm2))
		rnd7 := r.Intn(len(a.Nm4))
		for a.Nm4[rnd7] == a.Nm3[rnd3] || a.Nm4[rnd7] == a.Nm5[rnd5] {
			rnd7 = r.Intn(len(a.Nm4))
		}
		return a.Nm1[rnd] + a.Nm2[rnd2] + a.Nm3[rnd3] + a.Nm2[rnd4] + a.Nm4[rnd7] + a.Nm2[rnd6] + a.Nm5[rnd5]
	}
}

func vedalkenNameFem(a VedalkenArrays, r *rand.Rand) string {
	nTp := r.Intn(3)
	rnd := r.Intn(len(a.Nm6))
	rnd2 := r.Intn(len(a.Nm7))
	rnd3 := r.Intn(len(a.Nm8))
	rnd4 := r.Intn(len(a.Nm11))
	rnd5 := r.Intn(len(a.Nm12))
	if rnd2 < 4 {
		for rnd4 < 3 {
			rnd4 = r.Intn(len(a.Nm11))
		}
	}
	if nTp < 2 {
		for a.Nm6[rnd] == a.Nm8[rnd3] || a.Nm8[rnd3] == a.Nm12[rnd5] {
			rnd3 = r.Intn(len(a.Nm8))
		}
		return a.Nm6[rnd] + a.Nm7[rnd2] + a.Nm8[rnd3] + a.Nm11[rnd4] + a.Nm12[rnd5]
	} else {
		rnd6 := r.Intn(len(a.Nm9))
		rnd7 := r.Intn(len(a.Nm10))
		for a.Nm10[rnd7] == a.Nm8[rnd3] || a.Nm10[rnd7] == a.Nm12[rnd5] {
			rnd7 = r.Intn(len(a.Nm10))
		}
		return a.Nm6[rnd] + a.Nm7[rnd2] + a.Nm8[rnd3] + a.Nm9[rnd6] + a.Nm10[rnd7] + a.Nm11[rnd4] + a.Nm12[rnd5]
	}
}

func GenerateVedalkenNames(arr *VedalkenArrays, 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++ {
		var n string
		if gender == "female" {
			n = vedalkenNameFem(*arr, r)
		} else {
			n = vedalkenNameMas(*arr, r)
		}
		for n == "" || swearFilter(n) {
			if gender == "female" {
				n = vedalkenNameFem(*arr, r)
			} else {
				n = vedalkenNameMas(*arr, r)
			}
		}
		names = append(names, n)
	}
	return names
}