package domain

import (
	"fmt"
)

// 字串轉數字的對應表
var genderStringToCode = map[string]int64{
	"secret": 0,
	"male":   1,
	"female": 2,
}

// 數字轉字串的對應表
var genderCodeToString = map[int64]string{
	0: "secret",
	1: "male",
	2: "female",
}

// StringToGenderCode 將 "male"/"female"/"secret" 轉為對應數字
func StringToGenderCode(gender string) (int64, error) {
	code, ok := genderStringToCode[gender]
	if !ok {
		return -1, fmt.Errorf("invalid gender string")
	}

	return code, nil
}

// GenderCodeToString 將 0/1/2 轉為對應字串 "male"/"female"/"secret"
func GenderCodeToString(code int64) (string, error) {
	gender, ok := genderCodeToString[code]
	if !ok {
		return "", fmt.Errorf("invalid gender code")
	}

	return gender, nil
}