Sendmail command (#13079)

* Add SendSync method

Usefull to have when you need to be confident that message was sent.

* Add sendmail command

* add checks that if either title or content is empty then error out

* Add a confirmation step

* Add --force option to bypass confirm step

* Move implementation of runSendMail to a different file

* Add copyrighting comment

* Make content optional

Print waring if it's empty or haven't been set up.
The warning will be skiped if there's a `--force` flag.

* Fix import style

Co-authored-by: 6543 <6543@obermui.de>

* Use batch when getting all users

IterateUsers uses batching by default.

Signed-off-by: Maxim Zhiburt <zhiburt@gmail.com>

* Send emails one by one instead of as one chunck

Signed-off-by: Maxim Zhiburt <zhiburt@gmail.com>

* Send messages concurantly

Signed-off-by: Maxim Zhiburt <zhiburt@gmail.com>

* Use SendAsync+Flush instead of SendSync

Signed-off-by: Maxim Zhiburt <zhiburt@gmail.com>

* Add timeout parameter to sendemail command

Signed-off-by: Maxim Zhiburt <zhiburt@gmail.com>

* Fix spelling mistake

Signed-off-by: Maxim Zhiburt <zhiburt@gmail.com>

* Update cmd/admin.go

Co-authored-by: 6543 <6543@obermui.de>

* Connect to a running Gitea instance

* Fix mispelling

* Add copyright comment

Co-authored-by: 6543 <6543@obermui.de>
Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>
Co-authored-by: techknowlogick <techknowlogick@gitea.io>

1 files changed, 20 insertions, 0 deletions

diff --git a/cmd/cmd.go b/cmd/cmd.go
index d05eb8b1a2..bb768cc159 100644
--- a/cmd/cmd.go
+++ b/cmd/cmd.go
@@ -9,6 +9,7 @@ package cmd
 import (
 	"errors"
 	"fmt"
+	"strings"
 
 	"code.gitea.io/gitea/models"
 	"code.gitea.io/gitea/modules/setting"
@@ -32,6 +33,25 @@ func argsSet(c *cli.Context, args ...string) error {
 	return nil
 }
 
+// confirm waits for user input which confirms an action
+func confirm() (bool, error) {
+	var response string
+
+	_, err := fmt.Scanln(&response)
+	if err != nil {
+		return false, err
+	}
+
+	switch strings.ToLower(response) {
+	case "y", "yes":
+		return true, nil
+	case "n", "no":
+		return false, nil
+	default:
+		return false, errors.New(response + " isn't a correct confirmation string")
+	}
+}
+
 func initDB() error {
 	return initDBDisableConsole(false)
 }