Revert sync changes

This reverts commits:
  948bf767bc
  8fcbdddc62

headless/headless.go

@@ -1,6 +1,7 @@
 package headless
 
 import (
+	"context"
 	"errors"
 	"fmt"
 	"os"
@@ -66,10 +67,24 @@ func Init(conf Config, updates chan fmt.Stringer) error {
 	updates <- configuredDisplayMode{}
 
 	// sync
-	updates <- creatingSyncer{}
+	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()
-	updates <- synchronizing{}
-	err = gmx.Matrix().Client().Sync()
+	updates <- processingSync{}
+	err = gmx.Matrix().(*matrix.Container).ProcessSyncResponse(resp, "")
 	if err != nil {
 		return err
 	}

headless/msg.go

@@ -32,16 +32,22 @@ func (msg configuredDisplayMode) String() string {
 	return "Configured display mode…"
 }
 
-type creatingSyncer struct{}
+type beginningSync struct{}
 
-func (msg creatingSyncer) String() string {
-	return "Initializing sync utilities…"
+func (msg beginningSync) String() string {
+	return "Beginning the sync process…"
 }
 
-type synchronizing struct{}
+type fetchedSyncData struct{}
 
-func (msg synchronizing) String() string {
-	return "Synchronizing…"
+func (msg fetchedSyncData) String() string {
+	return "Fetched sync data…"
+}
+
+type processingSync struct{}
+
+func (msg processingSync) String() string {
+	return "Processing sync response…"
 }
 
 type syncFinished struct{}

matrix/matrix.go

@@ -464,8 +464,9 @@ func (c *Container) InitSyncer() {
 		debug.Print("Running GC")
 		runtime.GC()
 		dbg.FreeOSMemory()
-
-		if c.headless {
+	}
+	if c.headless {
+		c.syncer.FirstDoneCallback = func() {
 			c.Stop()
 		}
 	}