Support Construct homeserver

src/js/sync/sync.js

@@ -39,28 +39,39 @@ function manageSync(root) {
 		let newEvents = false
 
 		// set up directs
+		if (root.account_data) {
 			const directs = root.account_data.events.find(e => e.type === "m.direct")
 			if (directs) {
 				Object.values(directs.content).forEach(ids => {
 					ids.forEach(id => store.directs.add(id))
 				})
 			}
+		}
 
 		// set up rooms
+		if (root.rooms) {
+			if (root.rooms.join) {
 				Object.entries(root.rooms.join).forEach(([id, data]) => {
 					if (!store.rooms.has(id)) {
 						store.rooms.askAdd(id, data)
 					}
 					const room = store.rooms.get(id).value()
 					const timeline = room.timeline
+					if (data.state) timeline.updateStateEvents(data.state.events)
+					if (data.timeline) {
 						if (!timeline.from) timeline.from = data.timeline.prev_batch
-			if (data.timeline.events.length) newEvents = true
-			timeline.updateStateEvents(data.state.events)
+						if (data.timeline.events.length) {
+							newEvents = true
 							timeline.updateEvents(data.timeline.events)
-			timeline.updateEphemeral(data.ephemeral.events)
+						}
+					}
+					if (data.ephemeral) timeline.updateEphemeral(data.ephemeral.events)
 				})
+			}
+		}
 
 		// set up groups
+		if (root.groups) {
 			Promise.all(
 				Object.keys(root.groups.join).map(id => {
 					if (!store.groups.has(id)) {
@@ -95,6 +106,8 @@ function manageSync(root) {
 			).then(() => {
 				store.rooms.sort()
 			})
+		}
+
 		if (newEvents) store.newEvents.broadcast("changeSelf")
 	} catch (e) {
 		console.error(root)

src/js/timeline.js

@@ -295,7 +295,7 @@ class Timeline extends Subscribable {
 
 	async loadScrollback() {
 		debug = true
-		if (!this.from) throw new Error("Can't load scrollback, no from token")
+		if (!this.from) return // no more scrollback for this timeline
 		const url = new URL(`${lsm.get("domain")}/_matrix/client/r0/rooms/${this.id}/messages`)
 		url.searchParams.set("access_token", lsm.get("access_token"))
 		url.searchParams.set("from", this.from)
@@ -316,7 +316,8 @@ class Timeline extends Subscribable {
 		if (root.chunk.length) {
 			// there are events to display
 			this.updateEvents(root.chunk)
-		} else {
+		}
+		if (!root.chunk.length || !root.end) {
 			// we reached the top of the scrollback
 			this.reactiveTimeline.loadMore.remove()
 		}