ssb: A more plausibly correct way to load new messages correctly.

apps/ssb/tf-tab-news-feed.js

@@ -191,13 +191,25 @@ class TfTabNewsFeedElement extends LitElement {
 		return result;
 	}
 
-	async add_messages(messages) {
-		this.messages = await this.decrypt([...messages, ...this.messages]);
+	async load_latest() {
+		this.loading++;
+		let now = new Date().valueOf();
+		let end_time = now + 24 * 60 * 60 * 1000;
+		let messages = [];
+		try {
+			messages = await this.fetch_messages(this.time_range[1], end_time);
+			messages = await this.decrypt(messages);
+			this.time_range = [this.time_range[0], end_time];
+		} finally {
+			this.loading--;
+		}
+		this.messages = [...this.messages, ...messages];
+		console.log('done loading latest messages.');
 	}
 
 	async load_messages() {
 		let self = this;
-		this.loading = true;
+		this.loading++;
 		let messages = [];
 		try {
 			this.messages = [];
@@ -220,7 +232,7 @@ class TfTabNewsFeedElement extends LitElement {
 				messages = await this.decrypt([...more, ...this.messages]);
 			}
 		} finally {
-			this.loading = false;
+			this.loading--;
 		}
 		this.messages = messages;
 		console.log(`loading messages done for ${self.whoami}`);