Implement mailer and add welcome email for POP account

helpers/authelia/mail.go

@@ -0,0 +1,66 @@
+package authelia
+
+import (
+	ht "html/template"
+	tt "text/template"
+
+	"git.readonly.ch/bouzoure/pop-camarades/helpers"
+	"git.readonly.ch/bouzoure/pop-camarades/models"
+)
+
+type InputWelcomeMail struct {
+	Person   models.Person
+	ResetURL string
+}
+
+func SendWelcomeMail(person models.Person) error {
+	config, err := helpers.GetConfig()
+	if err != nil {
+		return err
+	}
+
+	mailer, err := helpers.GetMailer()
+	if err != nil {
+		return err
+	}
+
+	msg, err := helpers.NewMessage()
+	if err != nil {
+		return err
+	}
+
+	mailsFS, err := helpers.GetEmbeddedFS("mails")
+	if err != nil {
+		return err
+	}
+
+	inputValues := InputWelcomeMail{
+		Person:   person,
+		ResetURL: config.Authelia.ResetURL,
+	}
+
+	tplHTML, err := ht.ParseFS(mailsFS, "mails/welcome.html")
+	if err != nil {
+		return err
+	}
+
+	tplTXT, err := tt.ParseFS(mailsFS, "mails/welcome.txt")
+	if err != nil {
+		return err
+	}
+
+	msg.Subject("Ton compte POP Vaud")
+	msg.AddTo(person.Email)
+
+	err = msg.SetBodyHTMLTemplate(tplHTML, inputValues)
+	if err != nil {
+		return err
+	}
+
+	err = msg.AddAlternativeTextTemplate(tplTXT, inputValues)
+	if err != nil {
+		return err
+	}
+
+	return mailer.DialAndSend(msg)
+}

helpers/authelia/users.go

@@ -101,7 +101,10 @@ func SyncUsers() error {
 
 		account.UpdateNeeded = false
 		if !account.AccountCreated.Valid {
-			// TODO: send email
+			err := SendWelcomeMail(account.Person)
+			if err != nil {
+				log.Error(err)
+			}
 			account.AccountCreated.Scan(time.Now())
 		}
 

helpers/config.go

@@ -22,6 +22,15 @@ type Config struct {
 	}
 	Authelia struct {
 		UsersLocation string `env:"AUTHELIA_USERS_LOCATION"`
+		ResetURL      string `env:"AUTHELIA_RESET_URL"`
+	}
+	Mail struct {
+		Host        string `env:"MAIL_HOST"`
+		Port        int    `env:"MAIL_PORT"`
+		Username    string `env:"MAIL_USERNAME"`
+		Password    string `env:"MAIL_PASSWORD"`
+		FromName    string `env:"MAIL_FROM_NAME"`
+		FromAddress string `env:"MAIL_FROM_ADDRESS"`
 	}
 }
 

helpers/mailer.go

@@ -0,0 +1,49 @@
+package helpers
+
+import (
+	"github.com/wneessen/go-mail"
+)
+
+var mailer *mail.Client
+var mailerSet bool
+
+func GetMailer() (*mail.Client, error) {
+	if mailerSet {
+		return mailer, nil
+	}
+
+	config, err := GetConfig()
+	if err != nil {
+		return mailer, err
+	}
+
+	mailer, err = mail.NewClient(
+		config.Mail.Host,
+		mail.WithPort(config.Mail.Port),
+		mail.WithSMTPAuth(mail.SMTPAuthAutoDiscover),
+		mail.WithUsername(config.Mail.Username),
+		mail.WithPassword(config.Mail.Password),
+	)
+	if err != nil {
+		return mailer, err
+	}
+
+	mailerSet = true
+	return mailer, nil
+}
+
+func NewMessage() (*mail.Msg, error) {
+	msg := mail.NewMsg()
+
+	config, err := GetConfig()
+	if err != nil {
+		return msg, err
+	}
+
+	msg.FromFormat(
+		config.Mail.FromName,
+		config.Mail.FromAddress,
+	)
+
+	return msg, nil
+}