fixup: Hack up message list to be sorted ascendingtopic/asc_sort_imap

An attempt at making ascending or descending message list configurable.
Seems to work for me, but a proper take on this might need to involve
having to rethink what configuration options to present and how direct
they map towards the operations happening under the hood.

1 files changed, 22 insertions, 4 deletions

diff --git a/lib/msgstore.go b/lib/msgstore.go
index 4aaad82..a99259e 100644
--- a/lib/msgstore.go
+++ b/lib/msgstore.go
@@ -15,6 +15,7 @@ type MessageStore struct {
 	DirInfo  models.DirectoryInfo
 	Messages map[uint32]*models.MessageInfo
 	Sorting  bool
+	OrdAsc   bool
 
 	// Ordered list of known UIDs
 	uids    []uint32
@@ -60,6 +61,7 @@ type MessageStore struct {
 func NewMessageStore(worker *types.Worker,
 	dirInfo *models.DirectoryInfo,
 	defaultSortCriteria []*types.SortCriterion,
+	ascending bool,
 	thread bool, clientThreads bool,
 	triggerNewEmail func(*models.MessageInfo),
 	triggerDirectoryChange func()) *MessageStore {
@@ -74,6 +76,7 @@ func NewMessageStore(worker *types.Worker,
 		Deleted:  make(map[uint32]interface{}),
 		DirInfo:  *dirInfo,
 		Messages: make(map[uint32]*models.MessageInfo),
+		OrdAsc: ascending,
 
 		selected:        0,
 		marked:          make(map[uint32]struct{}),
@@ -225,10 +228,20 @@ func (store *MessageStore) Update(msg types.WorkerMessage) {
 		var uids []uint32
 		newMap := make(map[uint32]*models.MessageInfo)
 
-		for i := len(msg.Threads) - 1; i >= 0; i-- {
-			msg.Threads[i].Walk(func(t *types.Thread, level int, currentErr error) error {
+		for i := 0; i < len(msg.Threads); i++ {
+			var j = 0
+			if store.OrdAsc {
+				j = i
+			} else {
+				j = len(msg.Threads) - i - 1
+			}
+			msg.Threads[j].Walk(func(t *types.Thread, level int, currentErr error) error {
 				uid := t.Uid
-				uids = append([]uint32{uid}, uids...)
+				if store.OrdAsc {
+					uids = append(uids, uid)
+				} else {
+					uids = append([]uint32{uid}, uids...)
+				}
 				if msg, ok := store.Messages[uid]; ok {
 					newMap[uid] = msg
 				} else {
@@ -491,7 +504,12 @@ func (store *MessageStore) Uids() []uint32 {
 
 func (store *MessageStore) Selected() *models.MessageInfo {
 	uids := store.Uids()
-	idx := store.selected
+	var idx = 0
+	if store.OrdAsc {
+		idx = store.selected
+	} else {
+		idx = len(uids) - store.selected - 1
+	}
 	if len(uids) == 0 || idx < 0 || idx >= len(uids) {
 		return nil
 	}