From 312a53e5ff721e0a29e34aaeceb0eece1203002d Mon Sep 17 00:00:00 2001
From: Drew DeVault <sir@cmpwn.com>
Date: Wed, 20 Mar 2019 23:23:38 -0400
Subject: Implement :delete-message

---
 worker/imap/fetch.go     |  1 +
 worker/imap/flags.go     | 43 +++++++++++++++++++++++++++++++++++++++++++
 worker/imap/open.go      |  1 +
 worker/imap/worker.go    |  6 +++++-
 worker/types/messages.go | 10 ++++++++++
 5 files changed, 60 insertions(+), 1 deletion(-)
 create mode 100644 worker/imap/flags.go

(limited to 'worker')

diff --git a/worker/imap/fetch.go b/worker/imap/fetch.go
index 383a8a8..489dbe4 100644
--- a/worker/imap/fetch.go
+++ b/worker/imap/fetch.go
@@ -25,6 +25,7 @@ func (imapw *IMAPWorker) handleFetchMessageHeaders(
 		}()
 		go func() {
 			for msg := range messages {
+				imapw.seqMap[msg.SeqNum-1] = msg.Uid
 				imapw.worker.PostMessage(&types.MessageInfo{
 					Envelope:     msg.Envelope,
 					Flags:        msg.Flags,
diff --git a/worker/imap/flags.go b/worker/imap/flags.go
new file mode 100644
index 0000000..cb9b3b1
--- /dev/null
+++ b/worker/imap/flags.go
@@ -0,0 +1,43 @@
+package imap
+
+import (
+	"github.com/emersion/go-imap"
+
+	"git.sr.ht/~sircmpwn/aerc2/worker/types"
+)
+
+func (imapw *IMAPWorker) handleDeleteMessages(msg *types.DeleteMessages) {
+	item := imap.FormatFlagsOp(imap.AddFlags, true)
+	flags := []interface{}{imap.DeletedFlag}
+	if err := imapw.client.UidStore(&msg.Uids, item, flags, nil); err != nil {
+		imapw.worker.PostMessage(&types.Error{
+			Message: types.RespondTo(msg),
+			Error:   err,
+		}, nil)
+		return
+	}
+	var deleted []uint32
+	ch := make(chan uint32)
+	done := make(chan interface{})
+	go func() {
+		for seqNum := range ch {
+			i := seqNum - 1
+			deleted = append(deleted, imapw.seqMap[i])
+			imapw.seqMap = append(imapw.seqMap[:i], imapw.seqMap[i+1:]...)
+		}
+		done <- nil
+	}()
+	if err := imapw.client.Expunge(ch); err != nil {
+		imapw.worker.PostMessage(&types.Error{
+			Message: types.RespondTo(msg),
+			Error:   err,
+		}, nil)
+	} else {
+		<-done
+		imapw.worker.PostMessage(&types.MessagesDeleted{
+			Message: types.RespondTo(msg),
+			Uids:    deleted,
+		}, nil)
+		imapw.worker.PostMessage(&types.Done{types.RespondTo(msg)}, nil)
+	}
+}
diff --git a/worker/imap/open.go b/worker/imap/open.go
index 87c4fb3..3705bc0 100644
--- a/worker/imap/open.go
+++ b/worker/imap/open.go
@@ -39,6 +39,7 @@ func (imapw *IMAPWorker) handleFetchDirectoryContents(
 			}, nil)
 		} else {
 			imapw.worker.Logger.Printf("Found %d UIDs", len(uids))
+			imapw.seqMap = make([]uint32, len(uids))
 			imapw.worker.PostMessage(&types.DirectoryContents{
 				Message: types.RespondTo(msg),
 				Uids:    uids,
diff --git a/worker/imap/worker.go b/worker/imap/worker.go
index 1646165..ea7f317 100644
--- a/worker/imap/worker.go
+++ b/worker/imap/worker.go
@@ -33,12 +33,14 @@ type IMAPWorker struct {
 	selected imap.MailboxStatus
 	updates  chan client.Update
 	worker   *types.Worker
+	// Map of sequence numbers to UIDs, index 0 is seq number 1
+	seqMap []uint32
 }
 
 func NewIMAPWorker(worker *types.Worker) *IMAPWorker {
 	return &IMAPWorker{
-		worker:  worker,
 		updates: make(chan client.Update, 50),
+		worker:  worker,
 	}
 }
 
@@ -156,6 +158,8 @@ func (w *IMAPWorker) handleMessage(msg types.WorkerMessage) error {
 		w.handleFetchDirectoryContents(msg)
 	case *types.FetchMessageHeaders:
 		w.handleFetchMessageHeaders(msg)
+	case *types.DeleteMessages:
+		w.handleDeleteMessages(msg)
 	default:
 		return errUnsupported
 	}
diff --git a/worker/types/messages.go b/worker/types/messages.go
index 3f1a39f..ff2c36b 100644
--- a/worker/types/messages.go
+++ b/worker/types/messages.go
@@ -86,6 +86,11 @@ type FetchMessageBodies struct {
 	Uids imap.SeqSet
 }
 
+type DeleteMessages struct {
+	Message
+	Uids imap.SeqSet
+}
+
 // Messages
 
 type CertificateApprovalRequest struct {
@@ -122,3 +127,8 @@ type MessageInfo struct {
 	Size         uint32
 	Uid          uint32
 }
+
+type MessagesDeleted struct {
+	Message
+	Uids []uint32
+}
-- 
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