Add notification nav, show only replies in short format

src/App.ts

@@ -1,7 +1,7 @@
 import { generateID } from "IDUtils";
 import { PeerManager, PeerEventTypes } from "PeerManager";
 import { Sync } from "Sync";
-import { openDatabase, getData, addData, addDataArray, clearData, deleteData, mergeDataArray, getAllData, checkPostIds, getAllIds, getPostsByIds, getPostForUser, getPostById, getRepliesForPost, buildReplyCountMap } from "db";
+import { openDatabase, getData, addData, addDataArray, clearData, deleteData, mergeDataArray, getAllData, checkPostIds, getAllIds, getPostsByIds, getPostForUser, getPostById, getRepliesForPost, buildReplyCountMap, getNotificationsForUser } from "db";
 import { arrayBufferToBase64, compressString, decompressBuffer, base64ToArrayBuffer } from "dataUtils";
 import { log, logID, renderLog, setLogVisibility } from "log"
 
@@ -934,6 +934,15 @@ export class App {
     });
   }
 
+  hideInfo() {
+    const infoElement = document.getElementById('info');
+    if (infoElement && infoElement.style.display !== 'none') {
+      infoElement.style.display = 'none';
+      setLogVisibility(false);
+      this.showLog = false;
+    }
+  }
+
   showInfo() {
     let infoElement = document.getElementById('info');
 
@@ -980,6 +989,15 @@ export class App {
     let profileButton = this.div('profile-button');
     profileButton.addEventListener('click', e => globalThis.location.href = `${globalThis.location.origin}/user/${this.userID}`)
 
+    let notificationsButton = this.div('notifications-button');
+    notificationsButton.addEventListener('click', () => {
+      this.hideInfo();
+      navContainer.classList.remove('active');
+      history.pushState({}, '', '/notifications');
+      this.getRoute();
+      this.render();
+    });
+
     let monitorButton = this.div('monitor_button');
     monitorButton.addEventListener('click', async () => {
       navContainer.classList.toggle('active');
@@ -1316,7 +1334,7 @@ export class App {
 
     await this.initDB();
 
-    window.addEventListener('popstate', () => { this.getRoute(); this.render(); });
+    window.addEventListener('popstate', () => { this.hideInfo(); this.getRoute(); this.render(); });
 
     this.connectURL = `${document.location.origin}/connect/${this.userID}`;
     document.getElementById('connectURL')!.innerHTML = `<a href="${this.connectURL}">connect</a>`;
@@ -1462,6 +1480,11 @@ export class App {
         compose.style.display = "none";
         break;
       }
+      case App.Route.NOTIFICATIONS: {
+        this.posts = await getNotificationsForUser(this.userID);
+        document.getElementById('compose')!.style.display = "none";
+        break;
+      }
       default: {
         console.log.apply(null, log("Render: got a route I didn't understand. Rendering HOME:", this.router.route));
         this.posts = await this.loadPostsFromStorage(this.userID) ?? [];
@@ -1472,6 +1495,21 @@ export class App {
     if (!contentDiv) {
       throw new Error();
     }
+
+    if (this.router.route === App.Route.NOTIFICATIONS) {
+      contentDiv.innerHTML = '';
+      if (this.posts.length === 0) {
+        contentDiv.innerHTML = '<div style="padding:20px;color:gray">No notifications yet.</div>';
+      } else {
+        let first = true;
+        for (const postRecord of this.posts) {
+          contentDiv.appendChild(this.renderNotificationItem(postRecord.data, first));
+          first = false;
+        }
+      }
+      return;
+    }
+
     if (this.posts.length === 0) {
       this.renderWelcome(contentDiv as HTMLDivElement);
       return;
@@ -1618,6 +1656,42 @@ export class App {
     composeReplyArea.appendChild(previewDiv);
   }
 
+  renderNotificationItem(post: Post, first: boolean): HTMLElement {
+    const el = document.createElement('div');
+    el.style.cssText = 'padding: 8px 10px; cursor: pointer;';
+    if (!first) el.innerHTML = '<hr>';
+
+    const authorDiv = document.createElement('div');
+    authorDiv.className = 'compose-reply-author';
+    authorDiv.textContent = `@${post.author} · ${post.post_timestamp.toLocaleDateString()}`;
+    el.appendChild(authorDiv);
+
+    const previewDiv = document.createElement('div');
+    previewDiv.className = 'compose-reply-preview';
+
+    const textDiv = document.createElement('div');
+    textDiv.className = 'compose-reply-preview-text';
+    textDiv.style.maxHeight = 'none';
+    textDiv.innerHTML = this.markedAvailable ? marked.parse(post.text) : post.text;
+    previewDiv.appendChild(textDiv);
+
+    if (post.image_data) {
+      const img = document.createElement('img');
+      img.className = 'compose-reply-preview-image';
+      img.src = URL.createObjectURL(new Blob([post.image_data as ArrayBuffer]));
+      previewDiv.appendChild(img);
+    }
+
+    el.appendChild(previewDiv);
+    el.addEventListener('click', () => {
+      history.pushState({}, '', `/user/${post.author_id}/post/${post.post_id}`);
+      this.getRoute();
+      this.render();
+    });
+
+    return el;
+  }
+
   renderPost(post: Post, first: boolean, replyCount: number = 0) {
     if (!(post.hasOwnProperty("text"))) {
       throw new Error("Post is malformed!");
@@ -1743,6 +1817,15 @@ export class App {
     let path = document.location.pathname;
     console.log.apply(null, log("router: path ", path));
 
+    if (path === '/notifications') {
+      this.router.route = App.Route.NOTIFICATIONS;
+      this.router.userID = '';
+      this.router.postID = '';
+      this.router.mediaID = '';
+      console.log.apply(null, log("router: NOTIFICATIONS"));
+      return;
+    }
+
     const regex = "(user/([a-zA-Z0-9\-]+)/?(post/([a-zA-Z0-9\-]+)?/?)?(media/([0-9]+)?)?)|(connect/([a-zA-Z0-9\-]+))";
 
     const match = path.match(new RegExp(regex));
@@ -1793,5 +1876,6 @@ export namespace App {
     GROUP = 8,
     HOME = 16,
     CONNECT = 32,
+    NOTIFICATIONS = 64,
   }
 };

src/db.ts

@@ -542,6 +542,33 @@ export async function getRepliesForPost(postID: string): Promise<any[]> {
     return replies;
 }
 
+export async function getNotificationsForUser(userID: string): Promise<any[]> {
+    const userPostIds = new Set(await getAllIds(userID));
+    const knownUsers = [...(await indexedDB.databases())]
+        .map(db => db.name?.replace('user_', '')).filter(Boolean) as string[];
+    let notifications: any[] = [];
+    for (const dbUserID of knownUsers) {
+        try {
+            const { store } = await getDBTransactionStore(dbUserID);
+            const index = store.index("postReplyIndex");
+            const results: any[] = await new Promise((resolve, reject) => {
+                const req = index.getAll();
+                req.onsuccess = () => resolve(req.result);
+                req.onerror = () => reject(req.error);
+            });
+            for (const r of results) {
+                if (r.data.reply_to_id && userPostIds.has(r.data.reply_to_id)) {
+                    notifications.push(r);
+                }
+            }
+        } catch (_) {}
+    }
+    notifications.sort((a, b) =>
+        new Date(b.data.post_timestamp).getTime() - new Date(a.data.post_timestamp).getTime()
+    );
+    return notifications;
+}
+
 export async function getPostsByIds(userID: string, postIDs: string[]) {
     const { store } = await getDBTransactionStore(userID);
     const index = store.index("postIDIndex");