package emailser

import (
	"context"
	"strings"

	"91porn-server/app/appg"
	"91porn-server/common/constant/redisconst"
	"91porn-server/common/log"
	"91porn-server/common/stderr"

	"github.com/badoux/checkmail"
)

// CheckEmail 校验邮件地址是否合法
func CheckEmail(ctx context.Context, emailStr string) stderr.Code {
	if emailStr == "" {
		return stderr.ErrInvalidEmail
	}
	if err := checkmail.ValidateFormat(emailStr); err != nil {
		log.ErrorX(ctx, "invalid email", log.Any("email", emailStr), log.E(err))
		return stderr.ErrInvalidEmail
	}
	return stderr.Success
}

// VerifyCaptchaCode 核对验证码
func VerifyCaptchaCode(ctx context.Context, emailAddr, code string) stderr.Code {
	emailAddr = strings.TrimSpace(emailAddr)
	if strings.HasSuffix(emailAddr, "@dsp.xyz") { // pass the test email
		log.InfoX(ctx, "VerifyCaptchaCode dismiss test email", log.Any("email", emailAddr))
		return stderr.Success
	}
	if code := CheckEmail(ctx, emailAddr); code != stderr.Success {
		return code
	}
	redisKey := redisconst.GetEmailCaptchaKey(emailAddr)
	redisCode, err := appg.Redis.Get(redisKey)
	if err != nil {
		log.ErrorX(ctx, "VerifyCaptchaCode redis get err", log.Any("emailAddr", emailAddr),
			log.Any("redisKey", redisKey), log.E(err))
		return stderr.ErrNetWorkBusy
	}
	if redisCode == nil {
		log.InfoX(ctx, "VerifyCaptchaCode nil code in redis", log.Any("emailAddr", emailAddr), log.Any("code", code))
		return stderr.ErrCaptcha
	}
	if *redisCode != code {
		log.InfoX(ctx, "VerifyCaptchaCode invalid", log.Any("emailAddr", emailAddr), log.Any("code", code),
			log.Any("redisCode", redisCode))
		return stderr.ErrCaptchaInvalid
	}
	return stderr.Success
}