fix(caldav): make sure description is parsed correctly when multiline

Resolves https://github.com/go-vikunja/api/issues/35

go.mod

@@ -21,6 +21,7 @@ require (
 	gitea.com/xorm/xorm-redis-cache v0.2.0
 	github.com/ThreeDotsLabs/watermill v1.1.1
 	github.com/adlio/trello v1.10.0
+	github.com/arran4/golang-ical v0.0.0-20220517104411-fd89fefb0182
 	github.com/asaskevich/govalidator v0.0.0-20200907205600-7a23bdc65eef
 	github.com/bbrks/go-blurhash v1.1.1
 	github.com/c2h5oh/datasize v0.0.0-20200825124411-48ed595a09d2
@@ -42,7 +43,6 @@ require (
 	github.com/jinzhu/copier v0.3.5
 	github.com/labstack/echo/v4 v4.7.2
 	github.com/labstack/gommon v0.3.1
-	github.com/laurent22/ical-go v0.1.1-0.20181107184520-7e5d6ade8eef
 	github.com/lib/pq v1.10.6
 	github.com/magefile/mage v1.13.0
 	github.com/mattn/go-sqlite3 v1.14.14
@@ -107,6 +107,7 @@ require (
 	github.com/inconshreveable/mousetrap v1.0.0 // indirect
 	github.com/josharian/intern v1.0.0 // indirect
 	github.com/json-iterator/go v1.1.12 // indirect
+	github.com/laurent22/ical-go v0.1.1-0.20181107184520-7e5d6ade8eef // indirect
 	github.com/lithammer/shortuuid/v3 v3.0.4 // indirect
 	github.com/magiconair/properties v1.8.6 // indirect
 	github.com/mailru/easyjson v0.7.6 // indirect

go.sum

@@ -103,6 +103,8 @@ github.com/armon/go-metrics v0.0.0-20180917152333-f0300d1749da/go.mod h1:Q73ZrmV
 github.com/armon/go-metrics v0.3.10/go.mod h1:4O98XIr/9W0sxpJ8UaYkvjk10Iff7SnFrb4QAOwNTFc=
 github.com/armon/go-radix v0.0.0-20180808171621-7fddfc383310/go.mod h1:ufUuZ+zHj4x4TnLV4JWEpy2hxWSpsRywHrMgIH9cCH8=
 github.com/armon/go-radix v1.0.0/go.mod h1:ufUuZ+zHj4x4TnLV4JWEpy2hxWSpsRywHrMgIH9cCH8=
+github.com/arran4/golang-ical v0.0.0-20220517104411-fd89fefb0182 h1:mUsKridvWp4dgfkO/QWtgGwuLtZYpjKgsm15JRRik3o=
+github.com/arran4/golang-ical v0.0.0-20220517104411-fd89fefb0182/go.mod h1:BSTTrYHuM12oAL8jDdcmPdw02SBThKYWNFHQlvEG6b0=
 github.com/asaskevich/govalidator v0.0.0-20200907205600-7a23bdc65eef h1:46PFijGLmAjMPwCCCo7Jf0W6f9slllCkkv7vyc1yOSg=
 github.com/asaskevich/govalidator v0.0.0-20200907205600-7a23bdc65eef/go.mod h1:WaHUgvxTVq04UNunO+XhnAqY/wQc+bxr74GqbsZ/Jqw=
 github.com/aymerick/raymond v2.0.3-0.20180322193309-b565731e1464+incompatible/go.mod h1:osfaiScAUVup+UC9Nfq76eWqDhXlp+4UYaA8uhTBO6g=

pkg/caldav/parsing.go

@@ -23,7 +23,8 @@ import (
 
 	"code.vikunja.io/api/pkg/log"
 	"code.vikunja.io/api/pkg/models"
-	"github.com/laurent22/ical-go"
+
+	ics "github.com/arran4/golang-ical"
 )
 
 func GetCaldavTodosForTasks(list *models.ListWithTasksAndBuckets, listTasks []*models.TaskWithComments) string {
@@ -60,21 +61,15 @@ func GetCaldavTodosForTasks(list *models.ListWithTasksAndBuckets, listTasks []*m
 }
 
 func ParseTaskFromVTODO(content string) (vTask *models.Task, err error) {
-	parsed, err := ical.ParseCalendar(content)
+	parsed, err := ics.ParseCalendar(strings.NewReader(content))
 	if err != nil {
 		return nil, err
 	}
 
 	// We put the task details in a map to be able to handle them more easily
 	task := make(map[string]string)
-	for _, c := range parsed.Children {
+	for _, c := range parsed.Components[0].UnknownPropertiesIANAProperties() {
-		if c.Name == "VTODO" {
+		task[c.IANAToken] = c.Value
-			for _, entry := range c.Children {
-				task[entry.Name] = entry.Value
-			}
-			// Breaking, to only process the first task
-			break
-		}
 	}
 
 	// Parse the priority
@@ -91,10 +86,13 @@ func ParseTaskFromVTODO(content string) (vTask *models.Task, err error) {
 	// Parse the enddate
 	duration, _ := time.ParseDuration(task["DURATION"])
 
+	description := strings.ReplaceAll(task["DESCRIPTION"], "\\,", ",")
+	description = strings.ReplaceAll(description, "\\n", "\n")
+
 	vTask = &models.Task{
 		UID:         task["UID"],
 		Title:       task["SUMMARY"],
-		Description: task["DESCRIPTION"],
+		Description: description,
 		Priority:    priority,
 		DueDate:     caldavTimeToTimestamp(task["DUE"]),
 		Updated:     caldavTimeToTimestamp(task["DTSTAMP"]),
@@ -125,6 +123,10 @@ func caldavTimeToTimestamp(tstring string) time.Time {
 		format = `20060102T150405Z`
 	}
 
+	if len(tstring) == 8 {
+		format = `20060102`
+	}
+
 	t, err := time.Parse(format, tstring)
 	if err != nil {
 		log.Warningf("Error while parsing caldav time %s to TimeStamp: %s", tstring, err)