Prepare forum implementation for further development

Includes minor refactoring of existing code / tests

forum-network/public/classes/finance.js

@@ -0,0 +1,10 @@
+export class Token {
+  constructor(ownerPublicKey) {
+    this.ownerPublicKey = ownerPublicKey;
+  }
+
+  transfer(newOwnerPublicKey) {
+    // TODO: Current owner must sign this request
+    this.ownerPublicKey = newOwnerPublicKey;
+  }
+}

forum-network/public/classes/forum-node.js

@@ -84,6 +84,9 @@ export class ForumNode extends Actor {
 
   // Process an incoming post, received by whatever means
   processPost(authorId, post, stake) {
+    if (!post.id) {
+      post.id = CryptoUtil.randomUUID();
+    }
     this.actions.storePost.log(this, this, null, { authorId, post, stake });
     this.forumView.addPost(authorId, post.id, post, stake);
   }

forum-network/public/classes/forum-view.js

@@ -51,6 +51,7 @@ export class ForumView {
     const { citations = [], content } = postContent;
     const author = this.getOrInitializeAuthor(authorId);
     const postVertex = new PostVertex(postId, author, stake, content, citations);
+    console.log('addPost', { id: postId, postContent });
     this.posts.addVertex(postId, postVertex);
     for (const citation of citations) {
       this.posts.addEdge('citation', postId, citation.postId, citation);

forum-network/public/classes/forum.js

@@ -1,21 +1,18 @@
 import { Actor } from './actor.js';
-import { Graph, Vertex } from './graph.js';
+import { Graph } from './graph.js';
+import { CryptoUtil } from './crypto.js';
 import params from './params.js';
+import { Action } from './action.js';
 
-class PostVertex extends Vertex {
+class Post extends Actor {
   constructor(forum, authorId, postContent) {
-    super();
+    const index = forum.posts.countVertices();
-    this.forum = forum;
+    const name = `Post${index + 1}`;
-    this.id = postContent.id;
+    super(name, forum.scene);
+    this.id = postContent.id ?? CryptoUtil.randomUUID();
     this.authorId = authorId;
-    this.citations = postContent.citations;
     this.value = 0;
   }
-
-  onValidate({ tokensMinted }) {
-    this.value = params.initialPostValueFunction({ tokensMinted });
-    this.forum.distributeReputation(this, this.value);
-  }
 }
 
 /**
@@ -26,14 +23,19 @@ export class Forum extends Actor {
     super(name, scene);
     this.bench = bench;
     this.posts = new Graph();
+    this.actions = {
+      addPost: new Action('add post', scene),
+    };
   }
 
   async addPost(authorId, postContent) {
-    const post = new PostVertex(this, authorId, postContent);
+    const post = new Post(this, authorId, postContent);
+    this.actions.addPost.log(this, post);
     this.posts.addVertex(post.id, post);
     for (const { postId: citedPostId, weight } of postContent.citations) {
       this.posts.addEdge('citation', post.id, citedPostId, { weight });
     }
+    return post.id;
   }
 
   getPost(postId) {
@@ -44,6 +46,11 @@ export class Forum extends Actor {
     return this.posts.getVertices();
   }
 
+  onValidate({ tokensMinted }) {
+    const initialValue = params.initialPostValueFunction({ tokensMinted });
+    this.distributeReputation(this, initialValue);
+  }
+
   distributeReputation(post, amount, depth = 0) {
     console.log('distributeReputation', { post, amount, depth });
     // Add the given value to the current post

forum-network/public/classes/graph.js

@@ -1,3 +1,6 @@
+import mermaid from 'https://unpkg.com/mermaid@9.2.2/dist/mermaid.esm.min.mjs';
+import { debounce } from '../util.js';
+
 export class Vertex {
   constructor(data) {
     this.data = data;
@@ -38,7 +41,11 @@ export class Graph {
       data = id;
       id = this.nextVertexId++;
     }
+    if (this.vertices.has(id)) {
+      throw new Error(`Vertex already exists with id: ${id}`);
+    }
     const vertex = new Vertex(data);
+    console.log('addVertex', vertex);
     this.vertices.set(id, vertex);
     return this;
   }
@@ -70,6 +77,7 @@ export class Graph {
   }
 
   addEdge(label, from, to, data) {
+    console.log('addEdge', { from, to });
     if (this.getEdge(label, from, to)) {
       throw new Error(`Edge ${label} from ${from} to ${to} already exists`);
     }
@@ -91,4 +99,24 @@ export class Graph {
       });
     });
   }
+
+  countVertices() {
+    return this.vertices.size;
+  }
+
+  async renderGraph() {
+    const render = async () => {
+      const dateStart = new Date();
+      const graph = await mermaid.mermaidAPI.render(
+        this.seqDiagramElement.getId(),
+        this.logBox.getInnerText(),
+      );
+      this.seqDiagramBox.setInnerHTML(graph);
+      if (!this.dateLastRender) {
+        this.dateLastRender = new Date();
+      }
+      this.dateLastRender = dateStart;
+    };
+    debounce(render, 100);
+  }
 }

forum-network/public/classes/member.js

@@ -8,6 +8,7 @@ export class Member extends Actor {
   constructor(name, scene) {
     super(name, scene);
     this.actions = {
+      submitPostViaNetwork: new Action('submit post via network', scene),
       submitPost: new Action('submit post', scene),
       initiateValidationPool: new Action('initiate validation pool', scene),
       castVote: new Action('cast vote', scene),
@@ -28,15 +29,22 @@ export class Member extends Actor {
     return this;
   }
 
-  async submitPost(forumNode, post, stake) {
+  async submitPostViaNetwork(forumNode, post, stake) {
     // TODO: Include fee
     const postMessage = new PostMessage({ post, stake });
+    console.log('submitPostViaNetwork', postMessage);
     await postMessage.sign(this.reputationKey);
-    this.actions.submitPost.log(this, forumNode, null, { id: post.id });
+    this.actions.submitPostViaNetwork.log(this, forumNode, null, { id: post.id });
     // For now, directly call forumNode.receiveMessage();
     await forumNode.receiveMessage(JSON.stringify(postMessage.toJSON()));
   }
 
+  async submitPost(forum, postContent) {
+    // TODO: Include fee
+    this.actions.submitPost.log(this, forum);
+    return forum.addPost(this.reputationPublicKey, postContent);
+  }
+
   async initiateValidationPool(bench, options) {
     // For now, directly call bench.initiateValidationPool();
     const signingKey = await CryptoUtil.generateAsymmetricKey();

forum-network/public/classes/post.js

@@ -1,5 +1,3 @@
-import { CryptoUtil } from './crypto.js';
-
 export class Citation {
   constructor(postId, weight) {
     this.postId = postId;
@@ -20,7 +18,6 @@ export class Citation {
 
 export class PostContent {
   constructor(content) {
-    this.id = CryptoUtil.randomUUID();
     this.content = content;
     this.citations = [];
   }
@@ -33,16 +30,16 @@ export class PostContent {
 
   toJSON() {
     return {
-      id: this.id,
       content: this.content,
       citations: this.citations.map((citation) => citation.toJSON()),
+      ...(this.id ? { id: this.id } : {}),
     };
   }
 
   static fromJSON({ id, content, citations }) {
     const post = new PostContent(content);
-    post.id = id;
     post.citations = citations.map((citation) => Citation.fromJSON(citation));
+    post.id = id;
     return post;
   }
 }

forum-network/public/classes/scene.js

@@ -69,17 +69,8 @@ export class Scene {
       if (!this.dateLastRender) {
         this.dateLastRender = new Date();
       }
-      console.log(
-        `renderSequenceDiagram time: ${
-          new Date() - dateStart
-        } ms, time since last render: ${dateStart - this.dateLastRender}`,
-      );
       this.dateLastRender = dateStart;
     };
     debounce(render, 100);
   }
-
-  insertSvg(svgCode) {
-    this.seqDiagramElement.setInnerHTML(svgCode);
-  }
 }

forum-network/public/index.html

@@ -13,5 +13,6 @@
     <li><a href="/tests/mermaid.html">Mermaid</a></li>
     <li><a href="/tests/debounce.html">Debounce</a></li>
     <li><a href="/tests/availability.html">Availability</a></li>
+    <li><a href="/tests/forum.html">Forum</a></li>
   </ul>
 </body>

forum-network/public/tests/availability.html

@@ -55,14 +55,12 @@
   const requestor = new Public("Public", scene);
 
   const updateDisplayValues = async () => {
-    member1.setValue(
+    for (const member of members) {
+      member.setValue(
         "rep",
-      bench.reputations.getTokens(member1.reputationPublicKey)
+        bench.reputations.getTokens(member.reputationPublicKey)
-    );
-    member2.setValue(
-      "rep",
-      bench.reputations.getTokens(member2.reputationPublicKey)
       );
+    }
     bench.setValue("total rep", bench.getTotalReputation());
     await scene.renderSequenceDiagram();
   };

forum-network/public/tests/forum-network.html

@@ -13,6 +13,7 @@
   import { Member } from "/classes/member.js";
   import { ForumNode } from "/classes/forum-node.js";
   import { ForumNetwork } from "/classes/forum-network.js";
+  import { CryptoUtil } from "/classes/crypto.js";
   import { delay } from "/util.js";
 
   const rootElement = document.getElementById("forum-network");
@@ -48,15 +49,24 @@
   // const blockchain = new Blockchain();
 
   window.post1 = new PostContent({ message: "hi" });
+  window.post1.id = CryptoUtil.randomUUID();
   window.post2 = new PostContent({ message: "hello" }).addCitation(
     window.post1.id,
     1.0
   );
 
   await delay(1000);
-  await window.author1.submitPost(window.forumNode1, window.post1, 50);
+  await window.author1.submitPostViaNetwork(
+    window.forumNode1,
+    window.post1,
+    50
+  );
   await delay(1000);
-  await window.author2.submitPost(window.forumNode2, window.post2, 100);
+  await window.author2.submitPostViaNetwork(
+    window.forumNode2,
+    window.post2,
+    100
+  );
 
   await delay(1000);
   clearInterval(processInterval);

forum-network/public/tests/forum.html

@@ -0,0 +1,81 @@
+<!DOCTYPE html>
+<head>
+  <title>Forum test</title>
+  <link type="text/css" rel="stylesheet" href="/index.css" />
+</head>
+<body>
+  <div id="forum-test"></div>
+</body>
+<script type="module">
+  import { Box } from "/classes/box.js";
+  import { Scene } from "/classes/scene.js";
+  import { Member } from "/classes/member.js";
+  import { Bench } from "/classes/bench.js";
+  import { Business } from "/classes/business.js";
+  import { Availability } from "/classes/availability.js";
+  import { delay } from "/util.js";
+  import { Forum } from "/classes/forum.js";
+  import { Public } from "/classes/public.js";
+  import { PostContent } from "/classes/post.js";
+
+  const DELAY_INTERVAL = 500;
+
+  const rootElement = document.getElementById("forum-test");
+  const rootBox = new Box("rootBox", rootElement).flex();
+
+  const scene = (window.scene = new Scene("Forum test", rootBox).log(
+    "sequenceDiagram"
+  ));
+
+  const members = (window.members = []);
+  const newMember = async () => {
+    const index = members.length;
+    const name = `Member${index + 1}`;
+    const member = await new Member(name, scene).initialize();
+    members.push(member);
+    return member;
+  };
+
+  const posts = (window.posts = []);
+  const newPost = async (author, content, citations) => {
+    const postContent = new PostContent({ hello: "there" });
+    const postId = await member1.submitPost(forum, postContent1);
+    return postId;
+  };
+
+  const member1 = await newMember();
+  const member2 = await newMember();
+  await newMember();
+  const bench = (window.bench = new Bench("Bench", scene));
+  const forum = (window.forum = new Forum(bench, "Forum", scene));
+
+  const updateDisplayValues = async () => {
+    for (const member of members) {
+      member.setValue(
+        "rep",
+        bench.reputations.getTokens(member.reputationPublicKey)
+      );
+    }
+    bench.setValue("total rep", bench.getTotalReputation());
+    await scene.renderSequenceDiagram();
+  };
+
+  const updateDisplayValuesAndDelay = async () => {
+    await updateDisplayValues();
+    await delay(DELAY_INTERVAL);
+  };
+
+  await updateDisplayValuesAndDelay();
+
+  const postId1 = await member1.submitPost(
+    forum,
+    new PostContent({ hello: "there" })
+  );
+  await updateDisplayValuesAndDelay();
+
+  const postId2 = await member1.submitPost(
+    forum,
+    new PostContent({ hello: "to you as well" }).addCitation(postId1, 0.5)
+  );
+  await updateDisplayValuesAndDelay();
+</script>