connector: support transaction IDs

pkg/connector/connector.go

@@ -20,7 +20,11 @@ import (
 	"context"
 
 	"maunium.net/go/mautrix/bridgev2"
+	"maunium.net/go/mautrix/bridgev2/networkid"
+	"maunium.net/go/mautrix/event"
+	"maunium.net/go/mautrix/id"
 
+	"go.mau.fi/mautrix-discord/pkg/discordid"
 	"go.mau.fi/mautrix-discord/pkg/msgconv"
 )
 
@@ -31,8 +35,9 @@ type DiscordConnector struct {
 }
 
 var (
-	_ bridgev2.NetworkConnector      = (*DiscordConnector)(nil)
-	_ bridgev2.MaxFileSizeingNetwork = (*DiscordConnector)(nil)
+	_ bridgev2.NetworkConnector               = (*DiscordConnector)(nil)
+	_ bridgev2.MaxFileSizeingNetwork          = (*DiscordConnector)(nil)
+	_ bridgev2.TransactionIDGeneratingNetwork = (*DiscordConnector)(nil)
 )
 
 func (d *DiscordConnector) Init(bridge *bridgev2.Bridge) {
@@ -59,3 +64,7 @@ func (d *DiscordConnector) GetName() bridgev2.BridgeName {
 		DefaultPort:      29334,
 	}
 }
+
+func (d *DiscordConnector) GenerateTransactionID(_ id.UserID, _ id.RoomID, _ event.Type) networkid.RawTransactionID {
+	return networkid.RawTransactionID(discordid.GenerateNonce())
+}

pkg/connector/handlediscord.go

@@ -59,11 +59,19 @@ type DiscordMessage struct {
 }
 
 var (
-	_ bridgev2.RemoteMessage = (*DiscordMessage)(nil)
+	_ bridgev2.RemoteMessage                  = (*DiscordMessage)(nil)
+	_ bridgev2.RemoteMessageWithTransactionID = (*DiscordMessage)(nil)
 	// _ bridgev2.RemoteEdit    = (*DiscordMessage)(nil)
 	// _ bridgev2.RemoteMessageRemove    = (*DiscordMessage)(nil)
 )
 
+func (m *DiscordMessage) GetTransactionID() networkid.TransactionID {
+	if m.Data.Nonce == "" {
+		return ""
+	}
+	return networkid.TransactionID(m.Data.Nonce)
+}
+
 func (m *DiscordMessage) ConvertMessage(ctx context.Context, portal *bridgev2.Portal, intent bridgev2.MatrixAPI) (*bridgev2.ConvertedMessage, error) {
 	return m.Client.connector.MsgConv.ToMatrix(ctx, portal, intent, m.Client.UserLogin, m.Client.Session, m.Data), nil
 }