Add transformer to keep original event link

example.sync.yaml

@@ -52,6 +52,7 @@ transformations:
     config:
       NewTitle: "[Synchronisierter Termin]"
   - name: KeepMeetingLink
+  - name: AddOriginalLink
   # Do not use KeepAttendees when the Outlook Adapter is used as a sink. There is no way to suppress mail invitations
   - name: KeepAttendees
     config:

internal/adapter/google/event.go

@@ -52,6 +52,7 @@ func calendarEventToEvent(e *calendar.Event, adapterSourceID string) models.Even
 		Reminders:   reminders,
 		MeetingLink: e.HangoutLink,
 		Accepted:    hasEventAccepted,
+		HTMLLink:    e.HtmlLink,
 	}
 }
 

internal/adapter/outlook_http/client.go

@@ -287,6 +287,7 @@ func (o OutlookClient) outlookEventToEvent(oe Event, adapterSourceID string) (e
 		Reminders:   reminders,
 		MeetingLink: oe.OnlineMeetingUrl,
 		Accepted:    hasEventAccepted,
+		HTMLLink:    oe.HtmlLink,
 	}
 
 	if oe.IsAllDay {

internal/models/event.go

@@ -28,6 +28,7 @@ type Event struct {
 	Reminders   Reminders
 	MeetingLink string
 	Accepted    bool
+	HTMLLink    string
 }
 
 type Reminders []Reminder

internal/sync/transformer.go

@@ -35,6 +35,7 @@ var (
 		"PrefixTitle":     &transformation.PrefixTitle{Prefix: ""},
 		"KeepTitle":       &transformation.KeepTitle{},
 		"KeepMeetingLink": &transformation.KeepMeetingLink{},
+		"AddOriginalLink": &transformation.AddOriginalLink{},
 		"KeepDescription": &transformation.KeepDescription{},
 		"KeepLocation":    &transformation.KeepLocation{},
 		"KeepAttendees":   &transformation.KeepAttendees{UseEmailAsDisplayName: false},
@@ -49,6 +50,7 @@ var (
 		"KeepReminders",
 		"KeepDescription",
 		"KeepMeetingLink",
+		"AddOriginalLink",
 		"KeepTitle",
 		"PrefixTitle",
 		"ReplaceTitle",

internal/transformation/addOriginalLink.go

@@ -0,0 +1,19 @@
+package transformation
+
+import (
+	"fmt"
+	"github.com/inovex/CalendarSync/internal/models"
+)
+
+type AddOriginalLink struct{}
+
+func (t *AddOriginalLink) Name() string {
+	return "AddOriginalLink"
+}
+
+func (t *AddOriginalLink) Transform(source models.Event, sink models.Event) (models.Event, error) {
+	if len(source.HTMLLink) > 0 {
+		sink.Description = fmt.Sprintf("original event link: %s\n\n############\n%s", source.HTMLLink, sink.Description)
+	}
+	return sink, nil
+}

internal/transformation/addOriginalLink_test.go

@@ -0,0 +1,92 @@
+package transformation
+
+import (
+	"testing"
+
+	"github.com/inovex/CalendarSync/internal/models"
+	"github.com/stretchr/testify/assert"
+)
+
+// verify keep attendees
+func TestAddOriginalLink_Transform(t *testing.T) {
+	source := models.Event{
+		ICalUID:     "testId",
+		ID:          "testUid",
+		Title:       "foo",
+		Description: "bar",
+		HTMLLink:    "https://foo.com/bar?calendarId=testId",
+	}
+	sink := models.NewSyncEvent(source)
+
+	addOriginalLink := AddOriginalLink{}
+
+	event, err := addOriginalLink.Transform(source, sink)
+
+	assert.Nil(t, err)
+	expectedEvent := models.Event{
+		ICalUID:     "testId",
+		ID:          "testUid",
+		Title:       "CalendarSync Event",
+		Description: "original event link: https://foo.com/bar?calendarId=testId\n\n############\n",
+	}
+
+	assert.Equal(t, expectedEvent, event)
+}
+
+func TestAddOriginalLink_Transform_WithKeepDescription(t *testing.T) {
+	source := models.Event{
+		ICalUID:     "testId",
+		ID:          "testUid",
+		Title:       "foo",
+		Description: "bar",
+		HTMLLink:    "https://foo.com/bar?calendarId=testId",
+	}
+	sink := models.NewSyncEvent(source)
+
+	keepDescription := KeepDescription{}
+	addOriginalLink := AddOriginalLink{}
+
+	sink, _ = keepDescription.Transform(source, sink)
+	event, err := addOriginalLink.Transform(source, sink)
+
+	assert.Nil(t, err)
+	expectedEvent := models.Event{
+		ICalUID:     "testId",
+		ID:          "testUid",
+		Title:       "CalendarSync Event",
+		Description: "original event link: https://foo.com/bar?calendarId=testId\n\n############\nbar",
+	}
+
+	assert.Equal(t, expectedEvent, event)
+}
+
+func TestAddOriginalLink_Transform_WithKeepDescriptionAndKeepMeetingLink(t *testing.T) {
+	source := models.Event{
+		ICalUID:     "testId",
+		ID:          "testUid",
+		Title:       "foo",
+		Description: "bar",
+		MeetingLink: "https://meetinglink.de",
+		HTMLLink:    "https://foo.com/bar?calendarId=testId",
+	}
+	sink := models.NewSyncEvent(source)
+
+	keepDescription := KeepDescription{}
+	keepMeetingLink := KeepMeetingLink{}
+	addOriginalLink := AddOriginalLink{}
+
+	sink, _ = keepDescription.Transform(source, sink)
+	sink, _ = keepMeetingLink.Transform(source, sink)
+	event, err := addOriginalLink.Transform(source, sink)
+
+	assert.Nil(t, err)
+	expectedEvent := models.Event{
+		ICalUID: "testId",
+		ID:      "testUid",
+		Title:   "CalendarSync Event",
+		Description: "original event link: https://foo.com/bar?calendarId=testId\n\n############\n" +
+			"original meeting link: https://meetinglink.de\n\n############\nbar",
+	}
+
+	assert.Equal(t, expectedEvent, event)
+}