using mvds id

client/Client.go

@@ -18,7 +18,7 @@ type Peer state.PeerID
 type Client struct {
 	node mvds.Node
 
-	lastMessage protobuf.MessageID
+	lastMessage state.MessageID // @todo maybe make type
 }
 
 // Invite invites a peer to a chat.
@@ -43,7 +43,7 @@ func (c *Client) Kick(chat Chat, peer Peer) {
 
 // We may not need this as we can rely on the acks of data sync
 // Ack acknowledges `Join`, `Leave` and `Kick` messages.
-func (c *Client) Ack(chat Chat, messageID protobuf.MessageID) {
+func (c *Client) Ack(chat Chat, messageID state.MessageID) {
 
 }
 
@@ -66,12 +66,12 @@ func (c *Client) send(chat Chat, t protobuf.Message_MessageType, body []byte) er
 		return err
 	}
 
-	_, err = c.node.AppendMessage(state.GroupID(chat), buf)
+	id, err := c.node.AppendMessage(state.GroupID(chat), buf)
 	if err != nil {
 		return err
 	}
 
-	c.lastMessage = msg.ID()
+	c.lastMessage = id
 
 	return nil
 }

protobuf/messageid.go

@@ -1,22 +0,0 @@
-// Package protobuf contains protocol buffers as well as helper functions for those buffers.
-package protobuf
-
-import (
-	"crypto/sha256"
-	"encoding/binary"
-)
-
-// MessageID is a hash of `message_type`, `body` & `previous_message`.
-type MessageID [32]byte
-
-// ID returns the message ID.
-func (m *Message) ID() MessageID {
-	t := make([]byte, 8)
-	binary.LittleEndian.PutUint32(t, uint32(m.MessageType))
-
-	b := append([]byte("MESSAGE_ID"), t...)
-	b = append(b, m.Body...)
-	b = append(b, m.PreviousMessage...)
-
-	return sha256.Sum256(b)
-}