Revert "Attempt new headless sync implementation"

This reverts commit 05ccf81.

headless/headless.go

@@ -1,6 +1,7 @@
 package headless
 
 import (
+	"context"
 	"errors"
 	"fmt"
 	"os"
@@ -67,17 +68,25 @@ func Init(conf Config, updates chan fmt.Stringer) error {
 
 	// sync
 	updates <- beginningSync{}
+	resp, err := gmx.Matrix().Client().FullSyncRequest(mautrix.ReqSync{
+		Timeout:        30000,
+		Since:          "",
+		FilterID:       "",
+		FullState:      true,
+		SetPresence:    gmx.Matrix().Client().SyncPresence,
+		Context:        context.Background(),
+		StreamResponse: true,
+	})
+	if err != nil {
+		return err
+	}
+	updates <- fetchedSyncData{}
+
 	gmx.Matrix().(*matrix.Container).InitSyncer()
-syncloop:
-	for {
-		select {
-		case <-gmx.Matrix().(*matrix.Container).StopChannel():
-			break syncloop
-		default:
-			if err := gmx.Matrix().Client().Sync(); err != nil {
-				return err
-			}
-		}
+	updates <- processingSync{}
+	err = gmx.Matrix().(*matrix.Container).ProcessSyncResponse(resp, "")
+	if err != nil {
+		return err
 	}
 	updates <- syncFinished{}
 

matrix/matrix.go

@@ -350,10 +350,6 @@ func (c *Container) Logout() {
 	c.ui.OnLogout()
 }
 
-func (c *Container) StopChannel() chan bool {
-	return c.stop
-}
-
 // Stop stops the Matrix syncer.
 func (c *Container) Stop() {
 	if c.running {
@@ -473,7 +469,7 @@ func (c *Container) InitSyncer() {
 	}
 	if c.headless {
 		c.syncer.FirstDoneCallback = func() {
-			c.stop <- true
+			c.Stop()
 		}
 	}