63 lines
1.7 KiB
Go
63 lines
1.7 KiB
Go
package lib
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import (
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"crypto/tls"
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"fmt"
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"net"
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"net/smtp"
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)
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var (
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smtpHost, smtpPort, smtpUser, smtpPass, smtpFrom, smtpFromName string
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)
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func SendEmail(to, fromName, subject, content string) error {
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if smtpHost == "" { return nil }
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displayName := smtpFromName
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if fromName != "" {
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displayName = fromName + " via inou"
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}
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html := wrapEmail(content)
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msg := "From: " + displayName + " <" + smtpFrom + ">\r\n" +
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"To: " + to + "\r\n" +
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"Subject: " + subject + "\r\n" +
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"MIME-Version: 1.0\r\n" +
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"Content-Type: text/html; charset=utf-8\r\n\r\n" + html
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conn, err := net.Dial("tcp", smtpHost+":"+smtpPort)
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if err != nil { return err }
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defer conn.Close()
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client, err := smtp.NewClient(conn, smtpHost)
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if err != nil { return err }
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defer client.Close()
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if err = client.StartTLS(&tls.Config{ServerName: smtpHost}); err != nil { return err }
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if err = client.Auth(smtp.PlainAuth("", smtpUser, smtpPass, smtpHost)); err != nil { return err }
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if err = client.Mail(smtpFrom); err != nil { return err }
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if err = client.Rcpt(to); err != nil { return err }
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w, err := client.Data()
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if err != nil { return err }
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_, err = w.Write([]byte(msg))
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if err != nil { return err }
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return w.Close()
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}
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func wrapEmail(content string) string {
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return fmt.Sprintf(`<!DOCTYPE html>
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<html>
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<head><meta charset="UTF-8"></head>
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<body style="margin:0;padding:0;background:#FAF8F5;font-family:'Helvetica Neue',Helvetica,Arial,sans-serif;">
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<table width="100%%" style="background:#FAF8F5;padding:40px 20px;"><tr><td align="center">
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<table style="max-width:540px;background:#fff;border-radius:12px;padding:48px;text-align:left;"><tr><td style="color:#2D2A26;font-size:16px;line-height:1.6;">
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%s
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</td></tr></table>
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</td></tr></table>
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</body>
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</html>`, content)
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}
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