GODT-1077 IMAP sync counting

internal/store/message.go

@@ -148,3 +148,17 @@ func (message *Message) GetBodyStructure() (bs *pkgMsg.BodyStructure, err error)
 	}
 	return bs, nil
 }
+
+func (message *Message) IncreaseBuildCount() (times uint32, err error) {
+	txUpdate := func(tx *bolt.Tx) error {
+		times, err = message.store.txIncreaseMsgBuildCount(
+			tx.Bucket(msgBuildCountBucket),
+			message.ID(),
+		)
+		return err
+	}
+	if err = message.store.db.Update(txUpdate); err != nil {
+		return 0, err
+	}
+	return times, nil
+}

internal/store/store.go

@@ -54,6 +54,8 @@ var (
 	//   * {messageID} -> message data (subject, from, to, time, headers, body size, ...)
 	// * bodystructure
 	//   * {messageID} -> message body structure
+	// * msgbuildcount
+	//   * {messageID} -> uint32 number of message builds to track re-sync issues
 	// * counts
 	//   * {mailboxID} -> mailboxCounts: totalOnAPI, unreadOnAPI, labelName, labelColor, labelIsExclusive
 	// * address_info
@@ -76,6 +78,7 @@ var (
 	//       * {messageID} -> true
 	metadataBucket      = []byte("metadata")          //nolint[gochecknoglobals]
 	bodystructureBucket = []byte("bodystructure")     //nolint[gochecknoglobals]
+	msgBuildCountBucket = []byte("msgbuildcount")     //nolint[gochecknoglobals]
 	countsBucket        = []byte("counts")            //nolint[gochecknoglobals]
 	addressInfoBucket   = []byte("address_info")      //nolint[gochecknoglobals]
 	addressModeBucket   = []byte("address_mode")      //nolint[gochecknoglobals]
@@ -204,6 +207,10 @@ func openBoltDatabase(filePath string) (db *bolt.DB, err error) {
 			return
 		}
 
+		if _, err = tx.CreateBucketIfNotExists(msgBuildCountBucket); err != nil {
+			return
+		}
+
 		if _, err = tx.CreateBucketIfNotExists(countsBucket); err != nil {
 			return
 		}

internal/store/user_message.go

@@ -191,6 +191,19 @@ func (store *Store) txGetBodyStructure(bsBucket *bolt.Bucket, msgID string) (*pk
 	return pkgMsg.DeserializeBodyStructure(raw)
 }
 
+func (store *Store) txIncreaseMsgBuildCount(b *bolt.Bucket, msgID string) (uint32, error) {
+	key := []byte(msgID)
+	count := uint32(0)
+
+	raw := b.Get(key)
+	if raw != nil {
+		count = btoi(raw)
+	}
+
+	count++
+	return count, b.Put(key, itob(count))
+}
+
 // createOrUpdateMessageEvent is helper to create only one message with
 // createOrUpdateMessagesEvent.
 func (store *Store) createOrUpdateMessageEvent(msg *pmapi.Message) error {