add send test email utility

cmd/utility.go

@@ -7,6 +7,8 @@ import (
 
 	"github.com/urfave/cli/v2"
 
+	"github.com/mayswind/ezbookkeeping/pkg/errs"
+	"github.com/mayswind/ezbookkeeping/pkg/mail"
 	"github.com/mayswind/ezbookkeeping/pkg/requestid"
 	"github.com/mayswind/ezbookkeeping/pkg/utils"
 )
@@ -28,6 +30,18 @@ var Utilities = &cli.Command{
 				},
 			},
 		},
+		{
+			Name:   "send-test-mail",
+			Usage:  "Send an email to specified e-mail address",
+			Action: sendTestMail,
+			Flags: []cli.Flag{
+				&cli.StringFlag{
+					Name:     "to",
+					Required: true,
+					Usage:    "To e-mail address",
+				},
+			},
+		},
 	},
 }
 
@@ -59,6 +73,34 @@ func parseRequestId(c *cli.Context) error {
 	return nil
 }
 
+func sendTestMail(c *cli.Context) error {
+	config, err := initializeSystem(c)
+
+	if err != nil {
+		return err
+	}
+
+	if !config.EnableSmtp || mail.Container.Current == nil {
+		return errs.ErrSmtpServerNotEnabled
+	}
+
+	toAddress := c.String("to")
+
+	err = mail.Container.Current.SendMail(&mail.MailMessage{
+		To:      toAddress,
+		Subject: "ezBookkeeping test e-mail",
+		Body:    "This is a test e-mail",
+	})
+
+	if err != nil {
+		return err
+	}
+
+	fmt.Printf("Test e-mail has been sent")
+
+	return nil
+}
+
 func printRequestIdInfo(requestId string, requestIdInfo *requestid.RequestIdInfo, newRequestIdInfo *requestid.RequestIdInfo) {
 	fmt.Printf("[RequestId] %s\n", requestId)
 	fmt.Printf("[ServerUniqId] %d (Current Server %d)\n", requestIdInfo.ServerUniqId, newRequestIdInfo.ServerUniqId)