package services

import (
	"crypto/tls"
	"eta_gn/eta_api/models"
	"fmt"
	"gopkg.in/gomail.v2"
	"strconv"
)

type SendEmailReq struct {
	Title   string   `description:"标题"`
	Content string   `description:"内容"`
	ToUser  []string `description:"收信人邮箱"`
}

func SendEmail(req SendEmailReq) (success bool, err error) {
	if req.Title == "" {
		err = fmt.Errorf("邮件主题不可为空")
		return
	}
	if req.Content == "" {
		err = fmt.Errorf("邮件内容不可为空")
		return
	}
	if len(req.ToUser) <= 0 {
		err = fmt.Errorf("收信人不可为空")
		return
	}

	// 邮箱配置
	confMap, e := models.GetBusinessConf()
	if e != nil {
		err = fmt.Errorf("GetBusinessConf err: %s", e.Error())
		return
	}
	checkArr := []string{
		models.BusinessConfEmailServerHost, models.BusinessConfEmailServerPort,
		models.BusinessConfEmailSender, models.BusinessConfEmailSenderUserName,
		models.BusinessConfEmailSenderPassword,
	}
	for _, v := range checkArr {
		if confMap[v] == "" {
			err = fmt.Errorf("%s配置有误", v)
			return
		}
	}

	port, _ := strconv.Atoi(confMap[models.BusinessConfEmailServerPort])
	if port <= 0 {
		port = 587 // 默认587端口
	}
	m := gomail.NewMessage()
	m.SetHeader("From", confMap[models.BusinessConfEmailSender])
	m.SetHeader("To", req.ToUser...)
	m.SetHeader("Subject", req.Title)
	m.SetBody("text/html", req.Content)
	d := gomail.NewDialer(confMap[models.BusinessConfEmailServerHost], port, confMap[models.BusinessConfEmailSenderUserName], confMap[models.BusinessConfEmailSenderPassword])
	// 解决x509报错的问题。证书不通过。跳过证书验证
	config := &tls.Config{ServerName: confMap[models.BusinessConfEmailServerHost], InsecureSkipVerify: true}
	d.TLSConfig = config
	if e = d.DialAndSend(m); e != nil {
		err = fmt.Errorf("邮件发送失败, Err: %s", e.Error())
		return
	}
	success = true
	return
}