Add email templating

changelog/unreleased/add-email-templating.md

@@ -0,0 +1,7 @@
+Enhancement: Add Email templating
+
+We have added email templating to ocis. Which are send on the SpaceShared and ShareCreated event.
+
+https://github.com/owncloud/ocis/pull/4564
+https://github.com/owncloud/ocis/issues/4303
+https://github.com/cs3org/reva/pull/3252

services/audit/pkg/types/events.go

@@ -29,6 +29,7 @@ func RegisteredEvents() []events.Unmarshaller {
 		events.SpaceEnabled{},
 		events.SpaceDisabled{},
 		events.SpaceDeleted{},
+		events.SpaceShared{},
 		events.UserCreated{},
 		events.UserDeleted{},
 		events.UserFeatureChanged{},

services/notifications/pkg/channels/channels.go

@@ -4,6 +4,7 @@ package channels
 import (
 	"context"
 	"crypto/tls"
+	"fmt"
 	"strings"
 
 	gateway "github.com/cs3org/go-cs3apis/cs3/gateway/v1beta1"
@@ -19,9 +20,9 @@ import (
 // Channel defines the methods of a communication channel.
 type Channel interface {
 	// SendMessage sends a message to users.
-	SendMessage(userIDs []string, msg string) error
+	SendMessage(userIDs []string, msg, subject, senderDisplayName string) error
 	// SendMessageToGroup sends a message to a group.
-	SendMessageToGroup(groupdID *groups.GroupId, msg string) error
+	SendMessageToGroup(groupdID *groups.GroupId, msg, subject, senderDisplayName string) error
 }
 
 // NewMailChannel instantiates a new mail communication channel.
@@ -100,7 +101,7 @@ func (m Mail) getMailClient() (*mail.SMTPClient, error) {
 }
 
 // SendMessage sends a message to all given users.
-func (m Mail) SendMessage(userIDs []string, msg string) error {
+func (m Mail) SendMessage(userIDs []string, msg, subject, senderDisplayName string) error {
 	if m.conf.Notifications.SMTP.Host == "" {
 		return nil
 	}
@@ -116,14 +117,19 @@ func (m Mail) SendMessage(userIDs []string, msg string) error {
 	}
 
 	email := mail.NewMSG()
-	email.SetFrom(m.conf.Notifications.SMTP.Sender).AddTo(to...)
+	if senderDisplayName != "" {
+		email.SetFrom(fmt.Sprintf("%s via owncloud <%s>", senderDisplayName, m.conf.Notifications.SMTP.Sender)).AddTo(to...)
+	} else {
+		email.SetFrom(m.conf.Notifications.SMTP.Sender).AddTo(to...)
+	}
 	email.SetBody(mail.TextPlain, msg)
+	email.SetSubject(subject)
 
 	return email.Send(smtpClient)
 }
 
 // SendMessageToGroup sends a message to all members of the given group.
-func (m Mail) SendMessageToGroup(groupID *groups.GroupId, msg string) error {
+func (m Mail) SendMessageToGroup(groupID *groups.GroupId, msg, subject, senderDisplayName string) error {
 	// TODO We need an authenticated context here...
 	res, err := m.gatewayClient.GetGroup(context.Background(), &groups.GetGroupRequest{GroupId: groupID})
 	if err != nil {
@@ -138,7 +144,7 @@ func (m Mail) SendMessageToGroup(groupID *groups.GroupId, msg string) error {
 		members = append(members, id.OpaqueId)
 	}
 
-	return m.SendMessage(members, msg)
+	return m.SendMessage(members, msg, subject, senderDisplayName)
 }
 
 func (m Mail) getReceiverAddresses(receivers []string) ([]string, error) {

services/notifications/pkg/command/server.go

@@ -5,6 +5,7 @@ import (
 
 	"github.com/cs3org/reva/v2/pkg/events"
 	"github.com/cs3org/reva/v2/pkg/events/server"
+	"github.com/cs3org/reva/v2/pkg/rgrpc/todo/pool"
 	"github.com/go-micro/plugins/v4/events/natsjs"
 	"github.com/owncloud/ocis/v2/ocis-pkg/config/configlog"
 	"github.com/owncloud/ocis/v2/services/notifications/pkg/channels"
@@ -27,8 +28,10 @@ func Server(cfg *config.Config) *cli.Command {
 		Action: func(c *cli.Context) error {
 			logger := logging.Configure(cfg.Service.Name, cfg.Log)
 
+			// evs defines a list of events to subscribe to
 			evs := []events.Unmarshaller{
 				events.ShareCreated{},
+				events.SpaceShared{},
 			}
 
 			evtsCfg := cfg.Notifications.Events
@@ -47,7 +50,12 @@ func Server(cfg *config.Config) *cli.Command {
 			if err != nil {
 				return err
 			}
-			svc := service.NewEventsNotifier(evts, channel, logger)
+			gwclient, err := pool.GetGatewayServiceClient(cfg.Notifications.RevaGateway)
+			if err != nil {
+				logger.Fatal().Err(err).Str("addr", cfg.Notifications.RevaGateway).Msg("could not get reva client")
+			}
+
+			svc := service.NewEventsNotifier(evts, channel, logger, gwclient, cfg.Commons.MachineAuthAPIKey, cfg.Notifications.EmailTemplatePath)
 			return svc.Run()
 		},
 	}

services/notifications/pkg/config/config.go

@@ -26,6 +26,7 @@ type Notifications struct {
 	Events            Events `yaml:"events"`
 	RevaGateway       string `yaml:"reva_gateway" env:"REVA_GATEWAY;NOTIFICATIONS_REVA_GATEWAY" desc:"CS3 gateway used to look up user metadata"`
 	MachineAuthAPIKey string `yaml:"machine_auth_api_key" env:"OCIS_MACHINE_AUTH_API_KEY;NOTIFICATIONS_MACHINE_AUTH_API_KEY" desc:"Machine auth API key used to validate internal requests necessary to access resources from other services."`
+	EmailTemplatePath string `yaml:"email_template_path" env:"OCIS_EMAIL_TEMPLATE_PATH;NOTIFICATIONS_EMAIL_TEMPLATE_PATH" desc:"Path to the E-Mail templates for the notifications to override the embedded ones."`
 }
 
 // SMTP combines the smtp configuration options.

services/notifications/pkg/email/email.go

@@ -0,0 +1,34 @@
+package email
+
+import (
+	"bytes"
+	"embed"
+	"html/template"
+	"path/filepath"
+)
+
+var (
+	//go:embed templates
+	templatesFS embed.FS
+)
+
+// RenderEmailTemplate renders the email template for a new share
+func RenderEmailTemplate(templateName string, templateVariables map[string]string, emailTemplatePath string) (string, error) {
+	var err error
+	var tpl *template.Template
+	// try to lookup the files in the filesystem
+	tpl, err = template.ParseFiles(filepath.Join(emailTemplatePath, templateName))
+	if err != nil {
+		// template has not been found in the fs, or path has not been specified => use embed templates
+		tpl, err = template.ParseFS(templatesFS, filepath.Join("templates/", templateName))
+		if err != nil {
+			return "", err
+		}
+	}
+	var writer bytes.Buffer
+	err = tpl.Execute(&writer, templateVariables)
+	if err != nil {
+		return "", err
+	}
+	return writer.String(), nil
+}

services/notifications/pkg/email/templates/shareCreated.email.tmpl

@@ -0,0 +1,18 @@
+Hello {{ .ShareGrantee }},
+
+{{ .ShareSharer }} has shared {{ .ShareFolder }} with you.
+
+Click here to view it: {{ .ShareLink }}
+
+----------------------------------------------------------
+
+Hallo {{ .Grantee }},
+
+{{ .ShareSharer }} hat dich zu {{ .ShareFolder }} eingeladen.
+
+Klicke hier zum Anzeigen: {{ .ShareLink }}
+
+
+---
+ownCloud - Store. Share. Work.
+https://owncloud.com

services/notifications/pkg/email/templates/sharedSpace.email.tmpl

@@ -0,0 +1,18 @@
+Hello {{ .SpaceGrantee }},
+
+{{ .SpaceSharer }} has invited you to join {{ .SpaceName }}.
+
+Click here to view it: {{ .ShareLink }}
+
+----------------------------------------------------------
+
+Hallo {{ .SpaceGrantee }},
+
+{{ .SpaceSharer }} hat dich in den Space {{ .SpaceName }} eingeladen.
+
+Klicke hier zum Anzeigen: {{ .ShareLink }}
+
+
+---
+ownCloud - Store. Share. Work.
+https://owncloud.com