package service

import (
	"context"
	"fmt"
	"math/rand"
	"time"
	"youngee_b_api/consts"
	"youngee_b_api/model/system_model"
	"youngee_b_api/redis"
)

var SendCode *sendCode

func SendCodeInit(config *system_model.Session) {
	sendCode := new(sendCode)
	sendCode.sessionTTL = time.Duration(config.TTL) * time.Minute
	SendCode = sendCode
}

type sendCode struct {
	sessionTTL time.Duration
}

func (s *sendCode) GetCode(ctx context.Context) string {
	rnd := rand.New(rand.NewSource(time.Now().UnixNano()))
	vcode := fmt.Sprintf("%06v", rnd.Int31n(1000000))
	return vcode
}

func (s *sendCode) SetSession(ctx context.Context, phone string, vcode string) error {
	err := redis.Set(ctx, s.getRedisKey(phone), vcode, s.sessionTTL)
	if err != nil {
		return err
	}
	return nil
}

func (s *sendCode) getRedisKey(key string) string {
	return fmt.Sprintf("%s%s", consts.SessionRedisPrefix, key)
}