Fetch valid UIDs from server after opening dir

2 files changed, 43 insertions, 3 deletions

diff --git a/worker/imap/open.go b/worker/imap/open.go
index d90a292..0f25c5e 100644
--- a/worker/imap/open.go
+++ b/worker/imap/open.go
@@ -1,6 +1,8 @@
 package imap
 
 import (
+	"github.com/emersion/go-imap"
+
 	"git.sr.ht/~sircmpwn/aerc2/worker/types"
 )
 
@@ -18,3 +20,35 @@ func (imapw *IMAPWorker) handleOpenDirectory(msg *types.OpenDirectory) {
 		}
 	}()
 }
+
+func (imapw *IMAPWorker) handleFetchDirectoryContents(
+	msg *types.FetchDirectoryContents) {
+
+	imapw.worker.Logger.Printf("Fetching UID list")
+
+	go func() {
+		seqSet := &imap.SeqSet{}
+		seqSet.AddRange(1, imapw.selected.Messages)
+		uid32, err := imapw.client.UidSearch(&imap.SearchCriteria{
+			SeqNum: seqSet,
+		})
+		if err != nil {
+			imapw.worker.PostMessage(&types.Error{
+				Message: types.RespondTo(msg),
+				Error:   err,
+			}, nil)
+		} else {
+			imapw.worker.Logger.Printf("Found %d UIDs", len(uid32))
+			var uids []uint64
+			for _, uid := range uid32 {
+				uids = append(uids,
+					(uint64(imapw.selected.UidValidity)<<32)|uint64(uid))
+			}
+			imapw.worker.PostMessage(&types.DirectoryContents{
+				Message: types.RespondTo(msg),
+				Uids:    uids,
+			}, nil)
+			imapw.worker.PostMessage(&types.Done{types.RespondTo(msg)}, nil)
+		}
+	}()
+}
diff --git a/worker/imap/worker.go b/worker/imap/worker.go
index f6685c1..51cb221 100644
--- a/worker/imap/worker.go
+++ b/worker/imap/worker.go
@@ -29,9 +29,10 @@ type IMAPWorker struct {
 		user     *url.Userinfo
 	}
 
-	worker  *types.Worker
-	client  *imapClient
-	updates chan client.Update
+	client   *imapClient
+	selected imap.MailboxStatus
+	updates  chan client.Update
+	worker   *types.Worker
 }
 
 func NewIMAPWorker(worker *types.Worker) *IMAPWorker {
@@ -151,6 +152,8 @@ func (w *IMAPWorker) handleMessage(msg types.WorkerMessage) error {
 		w.handleListDirectories(msg)
 	case *types.OpenDirectory:
 		w.handleOpenDirectory(msg)
+	case *types.FetchDirectoryContents:
+		w.handleFetchDirectoryContents(msg)
 	default:
 		return errUnsupported
 	}
@@ -162,6 +165,9 @@ func (w *IMAPWorker) handleImapUpdate(update client.Update) {
 	switch update := update.(type) {
 	case *client.MailboxUpdate:
 		status := update.Mailbox
+		if w.selected.Name == status.Name {
+			w.selected = *status
+		}
 		w.worker.PostMessage(&types.DirectoryInfo{
 			Flags:    status.Flags,
 			Name:     status.Name,