package generators

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

type CentaurData struct {
	Male 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"`
	} `json:"male"`
	Female struct {
		Nm8  []string `json:"nm8"`
		Nm9  []string `json:"nm9"`
		Nm10 []string `json:"nm10"`
		Nm11 []string `json:"nm11"`
		Nm12 []string `json:"nm12"`
		Nm13 []string `json:"nm13"`
		Nm14 []string `json:"nm14"`
	} `json:"female"`
	Surname1 []string `json:"surname1"`
	Surname2 []string `json:"surname2"`
}

var centaurData CentaurData

func LoadCentaurData(path string) error {
	file, err := os.Open(path)
	if err != nil {
		return err
	}
	defer file.Close()
	return json.NewDecoder(file).Decode(&centaurData)
}

func GenerateCentaurName(gender string) string {
	rand.Seed(time.Now().UnixNano())
	var nMs string
	if gender == "female" {
		nMs = generateCentaurFemaleName()
	} else {
		nMs = generateCentaurMaleName()
	}
	sur1 := centaurData.Surname1[rand.Intn(len(centaurData.Surname1))]
	sur2 := centaurData.Surname2[rand.Intn(len(centaurData.Surname2))]
	return nMs + " " + sur1 + sur2
}

func generateCentaurMaleName() string {
	m := centaurData.Male
	nTp := rand.Intn(5)
	rnd := rand.Intn(len(m.Nm1))
	rnd2 := rand.Intn(len(m.Nm2))
	rnd5 := rand.Intn(len(m.Nm7))
	if nTp == 0 {
		for m.Nm1[rnd] == "" {
			rnd = rand.Intn(len(m.Nm1))
		}
		for m.Nm7[rnd5] == "" {
			rnd5 = rand.Intn(len(m.Nm7))
		}
		return m.Nm1[rnd] + m.Nm2[rnd2] + m.Nm7[rnd5]
	} else {
		rnd3 := rand.Intn(len(m.Nm3))
		rnd4 := rand.Intn(len(m.Nm4))
		for m.Nm3[rnd3] == m.Nm1[rnd] || m.Nm3[rnd3] == m.Nm7[rnd5] {
			rnd3 = rand.Intn(len(m.Nm3))
		}
		if rnd2 == 0 {
			for rnd4 == 0 {
				rnd4 = rand.Intn(len(m.Nm4))
			}
		}
		if nTp < 4 {
			return m.Nm1[rnd] + m.Nm2[rnd2] + m.Nm3[rnd3] + m.Nm4[rnd4] + m.Nm7[rnd5]
		} else {
			rnd6 := rand.Intn(len(m.Nm5))
			rnd7 := rand.Intn(len(m.Nm6))
			for m.Nm3[rnd3] == m.Nm5[rnd6] || m.Nm5[rnd6] == m.Nm7[rnd5] {
				rnd6 = rand.Intn(len(m.Nm5))
			}
			return m.Nm1[rnd] + m.Nm2[rnd2] + m.Nm3[rnd3] + m.Nm4[rnd4] + m.Nm5[rnd6] + m.Nm6[rnd7] + m.Nm7[rnd5]
		}
	}
}

func generateCentaurFemaleName() string {
	f := centaurData.Female
	nTp := rand.Intn(3)
	rnd := rand.Intn(len(f.Nm8))
	rnd2 := rand.Intn(len(f.Nm9))
	rnd3 := rand.Intn(len(f.Nm10))
	rnd4 := rand.Intn(len(f.Nm13))
	rnd5 := rand.Intn(len(f.Nm14))
	if nTp < 2 {
		for f.Nm8[rnd] == f.Nm10[rnd3] || f.Nm10[rnd3] == f.Nm14[rnd5] {
			rnd3 = rand.Intn(len(f.Nm10))
		}
		return f.Nm8[rnd] + f.Nm9[rnd2] + f.Nm10[rnd3] + f.Nm13[rnd4] + f.Nm14[rnd5]
	} else {
		rnd6 := rand.Intn(len(f.Nm11))
		rnd7 := rand.Intn(len(f.Nm12))
		for f.Nm12[rnd7] == f.Nm10[rnd3] || f.Nm12[rnd7] == f.Nm14[rnd5] {
			rnd7 = rand.Intn(len(f.Nm12))
		}
		return f.Nm8[rnd] + f.Nm9[rnd2] + f.Nm10[rnd3] + f.Nm11[rnd6] + f.Nm12[rnd7] + f.Nm13[rnd4] + f.Nm14[rnd5]
	}
}