service/library/email/send.go

package email

import (
	"fmt"
	"io"
	"net/http"
	"service/dbstruct"
	"service/library/logger"
	"strings"

	"gopkg.in/gomail.v2"
)

func SendRavenIQTestResult(mail *dbstruct.Email, host string, port int, address, password string) error {

	url := mail.MediaComponent.Images[0].Urls[0]
	format := mail.MediaComponent.Images[0].Fmt
	body := &strings.Builder{}
	h2 := fmt.Sprintf("<h2>%v</h2>", mail.GetText())
	img := fmt.Sprintf("<img border=\"0\" src=\"%v\" alt=\"图片加载错误，请联系管理员\">", url)
	body.WriteString(h2)
	body.WriteString(img)

	response, err := http.Get(url)
	if err != nil {
		return err
	}
	attach, err := io.ReadAll(response.Body)
	response.Body.Close()
	if err != nil {
		return err
	}
	attachName := fmt.Sprintf("测评结果.%v", format[6:])

	m := gomail.NewMessage()

	m.SetHeader("From", mail.GetFrom())
	m.SetHeader("To", mail.GetTo())
	m.SetHeader("Subject", mail.GetSubject())
	m.SetBody("text/html", body.String())
	m.Attach(attachName, gomail.SetCopyFunc(func(w io.Writer) error { //设置邮件附件  第一个参数是附件名称   第二个参数是二进制文件流
		_, err := w.Write(attach)
		return err
	}))

	err = gomail.NewDialer(host, port, address, password).DialAndSend(m)
	if err != nil {
		logger.Error("Send Email Fail", err)
		return err
	}

	return nil
}