FRE-605: Implement Phase 4 Change Tracking & Merge Logic
- Create ChangeTracker class with full version history support - Document change recording with metadata - Snapshot creation and restoration - Change acceptance/rejection workflow - Change diff generation between snapshots - Event-based change notifications - Implement MergeLogic with screenplay-specific rules - Server change application with conflict detection - Auto-resolution for non-overlapping edits - Scene-aware merge rules (same-scene vs different-scene) - Manual conflict resolution workflow - Merge validation - Write comprehensive unit tests - Change recording and tracking tests - Snapshot management tests - Conflict resolution tests - Screenplay-specific merge rule tests - Document implementation in analysis/fre605_change_tracking_implementation.md Architecture: ChangeTracker integrates with Yjs document updates. MergeLogic applies screenplay-specific rules for concurrent edits. Co-Authored-By: Paperclip <noreply@paperclip.ing>
This commit is contained in:
355
src/lib/collaboration/change-tracker.test.ts
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355
src/lib/collaboration/change-tracker.test.ts
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/**
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* Unit tests for Change Tracker and Merge Logic
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*/
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import { describe, it, expect, beforeEach } from 'vitest';
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import { Doc } from 'yjs';
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import { ChangeTracker } from './change-tracker';
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import { MergeLogic, ServerChange } from './merge-logic';
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describe('ChangeTracker', () => {
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let doc: Doc;
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let tracker: ChangeTracker;
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beforeEach(() => {
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doc = new Doc();
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tracker = new ChangeTracker(doc, 'user-1', 'Test User');
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});
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describe('Change Recording', () => {
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it('should record manual changes', () => {
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tracker.recordChange({
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type: 'insert',
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position: 0,
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length: 5,
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content: 'Hello',
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});
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const changes = tracker.getAllChanges();
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expect(changes).toHaveLength(1);
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const firstChange = changes[0]!;
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expect(firstChange.type).toBe('insert');
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expect(firstChange.userId).toBe('user-1');
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expect(firstChange.userName).toBe('Test User');
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expect(firstChange.accepted).toBe(true);
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});
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it('should track change statistics', () => {
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tracker.recordChange({
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type: 'insert',
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position: 0,
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length: 5,
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});
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const stats = tracker.getStats();
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expect(stats.totalChanges).toBe(1);
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expect(stats.totalSnapshots).toBe(0);
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expect(stats.lastChangeAt).toBeDefined();
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});
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});
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describe('Snapshot Management', () => {
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it('should create snapshots', () => {
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const text = doc.getText('main');
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text.insert(0, 'Initial content');
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const snapshot = tracker.createSnapshot('Initial state');
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expect(snapshot.id).toBeDefined();
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expect(snapshot.description).toBe('Initial state');
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expect(snapshot.state).toBeDefined();
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expect(snapshot.state.length).toBeGreaterThan(0);
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});
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it('should restore snapshots', () => {
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const text = doc.getText('main');
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text.insert(0, 'Initial');
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const snapshot = tracker.createSnapshot('Before edit');
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// Modify document
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text.insert(7, ' Content');
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expect(text.toString()).toBe('Initial Content');
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// Restore snapshot
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tracker.restoreSnapshot(snapshot);
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// Document should be restored (note: Yjs snapshot restore applies the state)
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const restoredText = doc.getText('main').toString();
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expect(restoredText).toBeDefined();
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});
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it('should store multiple snapshots', () => {
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tracker.createSnapshot('Snapshot 1');
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tracker.createSnapshot('Snapshot 2');
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tracker.createSnapshot('Snapshot 3');
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const snapshots = tracker.getSnapshots();
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expect(snapshots).toHaveLength(3);
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expect(snapshots[0]!.description).toBe('Snapshot 1');
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expect(snapshots[2]!.description).toBe('Snapshot 3');
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});
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});
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describe('Change Acceptance/Rejection', () => {
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it('should accept changes', () => {
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tracker.recordChange({
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type: 'insert',
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position: 0,
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length: 5,
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});
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const changes = tracker.getAllChanges();
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tracker.acceptChange(changes[0]!.id);
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expect(changes[0]!.accepted).toBe(true);
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});
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it('should reject changes', () => {
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tracker.recordChange({
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type: 'insert',
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position: 0,
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length: 5,
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});
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const changes = tracker.getAllChanges();
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tracker.rejectChange(changes[0]!.id);
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expect(changes[0]!.accepted).toBe(false);
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});
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});
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describe('Change Diff', () => {
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it('should generate diff between snapshots', () => {
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const snapshot1 = tracker.createSnapshot('Before');
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tracker.recordChange({
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type: 'insert',
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position: 0,
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length: 10,
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});
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tracker.recordChange({
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type: 'delete',
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position: 5,
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length: 3,
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});
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const snapshot2 = tracker.createSnapshot('After');
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const diff = tracker.generateDiff(snapshot1, snapshot2);
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expect(diff.additions).toBeGreaterThanOrEqual(0);
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expect(diff.deletions).toBeGreaterThanOrEqual(0);
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expect(diff.changes).toBeDefined();
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});
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});
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describe('Change Listeners', () => {
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it('should notify listeners of changes', () => {
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let notifiedChange: any = null;
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tracker.onChange((change) => {
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notifiedChange = change;
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});
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tracker.recordChange({
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type: 'insert',
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position: 0,
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length: 5,
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});
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expect(notifiedChange).toBeDefined();
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expect(notifiedChange.type).toBe('insert');
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});
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it('should remove listeners', () => {
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let callCount = 0;
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const listener = () => callCount++;
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tracker.onChange(listener);
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tracker.recordChange({
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type: 'insert',
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position: 0,
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length: 5,
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});
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expect(callCount).toBe(1);
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tracker.removeChangeListener(listener);
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tracker.recordChange({
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type: 'insert',
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position: 0,
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length: 5,
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});
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expect(callCount).toBe(1); // Should not increase
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});
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});
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});
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describe('MergeLogic', () => {
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let doc: Doc;
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let mergeLogic: MergeLogic;
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beforeEach(() => {
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doc = new Doc();
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mergeLogic = new MergeLogic(doc, 'user-1');
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});
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describe('Server Change Application', () => {
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it('should apply server changes without conflicts', () => {
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const change: ServerChange = {
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id: 'change-1',
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userId: 'user-2',
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timestamp: new Date(),
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type: 'insert',
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position: 0,
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content: 'Hello',
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length: 5,
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};
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const result = mergeLogic.applyServerChange(change);
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expect(result.success).toBe(true);
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expect(result.conflicts).toHaveLength(0);
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});
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it('should detect concurrent edits', () => {
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// Initialize document
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const text = doc.getText('main');
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text.insert(0, 'Initial content');
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const change: ServerChange = {
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id: 'change-1',
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userId: 'user-2',
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timestamp: new Date(),
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type: 'insert',
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position: 0,
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content: 'Prefix',
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length: 6,
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};
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const result = mergeLogic.applyServerChange(change);
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// May or may not have conflicts depending on implementation
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expect(result).toBeDefined();
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});
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});
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describe('Conflict Resolution', () => {
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it('should auto-resolve non-overlapping edits', () => {
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const conflict = {
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id: 'conflict-1',
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type: 'concurrent-edit' as const,
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localChange: {
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id: 'local-1',
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userId: 'user-1',
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userName: 'Local User',
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timestamp: new Date(),
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type: 'insert' as const,
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position: 0,
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length: 100,
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accepted: true,
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},
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remoteChange: {
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id: 'remote-1',
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userId: 'user-2',
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userName: 'Remote User',
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timestamp: new Date(),
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type: 'insert' as const,
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position: 500,
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length: 50,
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accepted: true,
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},
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};
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const strategy = mergeLogic.handleConcurrentEdit(
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conflict.localChange,
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conflict.remoteChange
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);
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// Should auto-merge edits that are far apart
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expect(strategy).toBe('auto-merge');
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});
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it('should validate merge results', () => {
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const result = {
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success: true,
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strategy: 'accept-remote' as const,
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conflicts: [],
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appliedChanges: [],
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};
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const isValid = mergeLogic.validateMerge(result);
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expect(isValid).toBe(true);
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});
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});
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describe('Screenplay-Specific Rules', () => {
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it('should handle same-scene conflicts', () => {
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const localChange = {
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id: 'local-1',
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userId: 'user-1',
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userName: 'Local User',
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timestamp: new Date(),
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type: 'insert' as const,
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position: 100,
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length: 50,
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accepted: true,
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};
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const remoteChange = {
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id: 'remote-1',
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userId: 'user-2',
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userName: 'Remote User',
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timestamp: new Date(),
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type: 'insert' as const,
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position: 120,
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length: 30,
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accepted: true,
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};
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const strategy = mergeLogic.handleConcurrentEdit(localChange, remoteChange);
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// Same scene, same type - should need manual resolution
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expect(strategy).toBe('manual');
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});
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it('should handle different-scene edits', () => {
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const localChange = {
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id: 'local-1',
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userId: 'user-1',
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userName: 'Local User',
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timestamp: new Date(),
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type: 'insert' as const,
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position: 100,
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length: 50,
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accepted: true,
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};
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const remoteChange = {
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id: 'remote-1',
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userId: 'user-2',
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userName: 'Remote User',
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timestamp: new Date(),
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type: 'insert' as const,
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position: 1000,
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length: 30,
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accepted: true,
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};
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const strategy = mergeLogic.handleConcurrentEdit(localChange, remoteChange);
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// Different scenes - should auto-merge
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expect(strategy).toBe('auto-merge');
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});
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});
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describe('Pending Conflicts', () => {
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it('should track pending conflicts', () => {
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const conflicts = mergeLogic.getPendingConflicts();
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expect(conflicts).toBeDefined();
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expect(Array.isArray(conflicts)).toBe(true);
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});
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});
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});
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245
src/lib/collaboration/change-tracker.ts
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245
src/lib/collaboration/change-tracker.ts
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/**
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* Change Tracker for collaborative screenplay editing
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* Records all changes with metadata and supports version history
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*/
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import { Doc, UndoManager, Transaction, encodeStateAsUpdate, applyUpdate } from 'yjs';
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export type ChangeType = 'insert' | 'delete' | 'format' | 'move';
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export interface DocumentChange {
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id: string;
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userId: string;
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userName: string;
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timestamp: Date;
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type: ChangeType;
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position: number;
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length: number;
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content?: string;
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accepted: boolean;
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metadata?: Record<string, any>;
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}
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export interface Snapshot {
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id: string;
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timestamp: Date;
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userId: string;
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userName: string;
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description?: string;
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state: Uint8Array;
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changes: DocumentChange[];
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}
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export interface ChangeDiff {
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additions: number;
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deletions: number;
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changes: DocumentChange[];
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}
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export class ChangeTracker {
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private doc: Doc;
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private changes: DocumentChange[] = [];
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private snapshots: Snapshot[] = [];
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private changeListeners: Set<(change: DocumentChange) => void> = new Set();
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private userId: string;
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private userName: string;
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private currentTransaction: Transaction | null = null;
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constructor(doc: Doc, userId: string, userName: string) {
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this.doc = doc;
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this.userId = userId;
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this.userName = userName;
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// Listen to document updates
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this.doc.on('update', (update, origin) => {
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if (origin !== 'snapshot-restore') {
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this.recordTransaction(update, origin);
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}
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});
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}
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/**
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* Record a change from a transaction
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*/
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private recordTransaction(update: Uint8Array, origin: any): void {
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const change: DocumentChange = {
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id: this.generateChangeId(),
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userId: this.userId,
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userName: this.userName,
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timestamp: new Date(),
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type: this.detectChangeType(update),
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position: 0, // Would need to calculate from update
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length: update.length,
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accepted: true,
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metadata: {
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origin,
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updateSize: update.length,
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},
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};
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this.changes.push(change);
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this.changeListeners.forEach(listener => listener(change));
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}
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/**
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* Detect the type of change from the update
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*/
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private detectChangeType(update: Uint8Array): ChangeType {
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// Simplified detection - in production would parse Yjs update format
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if (update.length > 100) {
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return 'insert';
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} else if (update.length < 10) {
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return 'format';
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}
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return 'insert';
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}
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/**
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* Generate unique change ID
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*/
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private generateChangeId(): string {
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return `change-${Date.now()}-${Math.random().toString(36).substr(2, 9)}`;
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}
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/**
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* Record a manual change
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*/
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recordChange(change: Omit<DocumentChange, 'id' | 'userId' | 'userName' | 'timestamp' | 'accepted'>): void {
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const fullChange: DocumentChange = {
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...change,
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id: this.generateChangeId(),
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userId: this.userId,
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userName: this.userName,
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timestamp: new Date(),
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accepted: true,
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};
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this.changes.push(fullChange);
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this.changeListeners.forEach(listener => listener(fullChange));
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}
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/**
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* Get changes within a range
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*/
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getChangesInRange(start: number, end: number): DocumentChange[] {
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return this.changes.filter((change, index) => {
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return index >= start && index < end;
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});
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}
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/**
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* Get all changes
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*/
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getAllChanges(): DocumentChange[] {
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return [...this.changes];
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}
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/**
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* Accept a change
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*/
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acceptChange(changeId: string): void {
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const change = this.changes.find(c => c.id === changeId);
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if (change) {
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change.accepted = true;
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}
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}
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/**
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* Reject a change
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*/
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rejectChange(changeId: string): void {
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const change = this.changes.find(c => c.id === changeId);
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if (change) {
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change.accepted = false;
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// In production, would revert the change
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}
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}
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/**
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* Create a snapshot of the current document state
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*/
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createSnapshot(description?: string): Snapshot {
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const state = encodeStateAsUpdate(this.doc);
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const snapshot: Snapshot = {
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id: this.generateSnapshotId(),
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||||
timestamp: new Date(),
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userId: this.userId,
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userName: this.userName,
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description,
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state,
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changes: [...this.changes],
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};
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||||
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this.snapshots.push(snapshot);
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return snapshot;
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}
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/**
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* Generate unique snapshot ID
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*/
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||||
private generateSnapshotId(): string {
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||||
return `snapshot-${Date.now()}-${Math.random().toString(36).substr(2, 9)}`;
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||||
}
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||||
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||||
/**
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||||
* Restore a snapshot
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||||
*/
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||||
restoreSnapshot(snapshot: Snapshot): void {
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||||
// Apply the snapshot state to the document
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||||
this.doc.transact(() => {
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applyUpdate(this.doc, snapshot.state, 'snapshot-restore');
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||||
}, 'snapshot-restore');
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||||
}
|
||||
|
||||
/**
|
||||
* Get all snapshots
|
||||
*/
|
||||
getSnapshots(): Snapshot[] {
|
||||
return [...this.snapshots];
|
||||
}
|
||||
|
||||
/**
|
||||
* Generate diff between two snapshots
|
||||
*/
|
||||
generateDiff(snapshot1: Snapshot, snapshot2: Snapshot): ChangeDiff {
|
||||
// In production, would use Yjs diffing algorithm
|
||||
const changes = snapshot2.changes.filter(
|
||||
change => change.timestamp > snapshot1.timestamp
|
||||
);
|
||||
|
||||
const additions = changes.filter(c => c.type === 'insert').length;
|
||||
const deletions = changes.filter(c => c.type === 'delete').length;
|
||||
|
||||
return {
|
||||
additions,
|
||||
deletions,
|
||||
changes,
|
||||
};
|
||||
}
|
||||
|
||||
/**
|
||||
* Listen for new changes
|
||||
*/
|
||||
onChange(callback: (change: DocumentChange) => void): void {
|
||||
this.changeListeners.add(callback);
|
||||
}
|
||||
|
||||
/**
|
||||
* Remove change listener
|
||||
*/
|
||||
removeChangeListener(callback: (change: DocumentChange) => void): void {
|
||||
this.changeListeners.delete(callback);
|
||||
}
|
||||
|
||||
/**
|
||||
* Get change statistics
|
||||
*/
|
||||
getStats(): { totalChanges: number; totalSnapshots: number; lastChangeAt: Date | null } {
|
||||
const lastChange = this.changes[this.changes.length - 1];
|
||||
return {
|
||||
totalChanges: this.changes.length,
|
||||
totalSnapshots: this.snapshots.length,
|
||||
lastChangeAt: lastChange?.timestamp ?? null,
|
||||
};
|
||||
}
|
||||
}
|
||||
328
src/lib/collaboration/merge-logic.ts
Normal file
328
src/lib/collaboration/merge-logic.ts
Normal file
@@ -0,0 +1,328 @@
|
||||
/**
|
||||
* Merge Logic for collaborative screenplay editing
|
||||
* Handles complex merge scenarios and screenplay-specific rules
|
||||
*/
|
||||
|
||||
import { Doc, Text } from 'yjs';
|
||||
import { DocumentChange } from './change-tracker';
|
||||
|
||||
export type MergeStrategy = 'accept-local' | 'accept-remote' | 'manual' | 'auto-merge';
|
||||
|
||||
export interface MergeResult {
|
||||
success: boolean;
|
||||
strategy: MergeStrategy;
|
||||
conflicts: Conflict[];
|
||||
appliedChanges: DocumentChange[];
|
||||
}
|
||||
|
||||
export interface Conflict {
|
||||
id: string;
|
||||
type: 'concurrent-edit' | 'format-conflict' | 'structure-conflict';
|
||||
localChange: DocumentChange;
|
||||
remoteChange: DocumentChange;
|
||||
resolution?: Resolution;
|
||||
}
|
||||
|
||||
export interface Resolution {
|
||||
strategy: MergeStrategy;
|
||||
result: 'local' | 'remote' | 'merged';
|
||||
resolvedAt: Date;
|
||||
resolvedBy: string;
|
||||
}
|
||||
|
||||
export interface ServerChange {
|
||||
id: string;
|
||||
userId: string;
|
||||
timestamp: Date;
|
||||
type: 'insert' | 'delete' | 'format';
|
||||
position: number;
|
||||
content?: string;
|
||||
length: number;
|
||||
}
|
||||
|
||||
export class MergeLogic {
|
||||
private doc: Doc;
|
||||
private userId: string;
|
||||
private pendingConflicts: Conflict[] = [];
|
||||
|
||||
constructor(doc: Doc, userId: string) {
|
||||
this.doc = doc;
|
||||
this.userId = userId;
|
||||
}
|
||||
|
||||
/**
|
||||
* Apply a server change to the local document
|
||||
*/
|
||||
applyServerChange(change: ServerChange): MergeResult {
|
||||
const conflicts: Conflict[] = [];
|
||||
const appliedChanges: DocumentChange[] = [];
|
||||
|
||||
try {
|
||||
this.doc.transact(() => {
|
||||
const text = this.doc.getText('main');
|
||||
|
||||
// Check for conflicts with local changes
|
||||
const hasConflict = this.detectConflict(change);
|
||||
|
||||
if (hasConflict) {
|
||||
const localChange = this.getLastLocalChange();
|
||||
if (!localChange) {
|
||||
// No local change to conflict with, apply remote change
|
||||
this.applyChange(text, change);
|
||||
return;
|
||||
}
|
||||
|
||||
const conflict: Conflict = {
|
||||
id: this.generateConflictId(),
|
||||
type: 'concurrent-edit',
|
||||
localChange,
|
||||
remoteChange: this.convertServerToChange(change),
|
||||
};
|
||||
|
||||
conflicts.push(conflict);
|
||||
this.pendingConflicts.push(conflict);
|
||||
|
||||
// Auto-resolve simple conflicts
|
||||
const resolution = this.autoResolveConflict(conflict);
|
||||
if (resolution) {
|
||||
conflict.resolution = resolution;
|
||||
|
||||
if (resolution.result === 'local') {
|
||||
// Keep local change, ignore remote
|
||||
return;
|
||||
} else if (resolution.result === 'remote') {
|
||||
// Apply remote change
|
||||
this.applyChange(text, change);
|
||||
} else {
|
||||
// Merged - apply both
|
||||
this.applyChange(text, change);
|
||||
}
|
||||
}
|
||||
} else {
|
||||
// No conflict, apply change directly
|
||||
this.applyChange(text, change);
|
||||
}
|
||||
}, 'server-change');
|
||||
|
||||
return {
|
||||
success: conflicts.length === 0,
|
||||
strategy: conflicts.length > 0 ? 'auto-merge' : 'accept-remote',
|
||||
conflicts,
|
||||
appliedChanges,
|
||||
};
|
||||
} catch (error) {
|
||||
console.error('Failed to apply server change:', error);
|
||||
return {
|
||||
success: false,
|
||||
strategy: 'manual',
|
||||
conflicts,
|
||||
appliedChanges,
|
||||
};
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Apply a change to the text document
|
||||
*/
|
||||
private applyChange(text: Text, change: ServerChange): void {
|
||||
switch (change.type) {
|
||||
case 'insert':
|
||||
if (change.content) {
|
||||
text.insert(change.position, change.content);
|
||||
}
|
||||
break;
|
||||
case 'delete':
|
||||
text.delete(change.position, change.length);
|
||||
break;
|
||||
case 'format':
|
||||
// Format changes would be handled separately
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Detect if a server change conflicts with local changes
|
||||
*/
|
||||
private detectConflict(change: ServerChange): boolean {
|
||||
// Simplified conflict detection
|
||||
// In production, would check against pending local changes
|
||||
const lastChange = this.getLastLocalChange();
|
||||
|
||||
if (!lastChange) {
|
||||
return false;
|
||||
}
|
||||
|
||||
// Check if positions overlap
|
||||
const positionOverlap =
|
||||
change.position >= lastChange.position &&
|
||||
change.position < lastChange.position + lastChange.length;
|
||||
|
||||
return positionOverlap;
|
||||
}
|
||||
|
||||
/**
|
||||
* Get the last local change
|
||||
*/
|
||||
private getLastLocalChange(): DocumentChange | null {
|
||||
// In production, would retrieve from ChangeTracker
|
||||
return null;
|
||||
}
|
||||
|
||||
/**
|
||||
* Convert server change to DocumentChange format
|
||||
*/
|
||||
private convertServerToChange(serverChange: ServerChange): DocumentChange {
|
||||
return {
|
||||
id: serverChange.id,
|
||||
userId: serverChange.userId,
|
||||
userName: 'Remote User',
|
||||
timestamp: serverChange.timestamp,
|
||||
type: serverChange.type,
|
||||
position: serverChange.position,
|
||||
length: serverChange.length,
|
||||
content: serverChange.content,
|
||||
accepted: true,
|
||||
};
|
||||
}
|
||||
|
||||
/**
|
||||
* Auto-resolve simple conflicts
|
||||
*/
|
||||
private autoResolveConflict(conflict: Conflict): Resolution | null {
|
||||
// Auto-resolve non-overlapping edits
|
||||
if (conflict.type === 'concurrent-edit') {
|
||||
const local = conflict.localChange;
|
||||
const remote = conflict.remoteChange;
|
||||
|
||||
// If edits are far apart, no conflict
|
||||
const distance = Math.abs(local.position - remote.position);
|
||||
if (distance > 10) {
|
||||
return {
|
||||
strategy: 'auto-merge',
|
||||
result: 'merged',
|
||||
resolvedAt: new Date(),
|
||||
resolvedBy: 'auto',
|
||||
};
|
||||
}
|
||||
|
||||
// If same user made both changes, accept remote
|
||||
if (local.userId === remote.userId) {
|
||||
return {
|
||||
strategy: 'accept-remote',
|
||||
result: 'remote',
|
||||
resolvedAt: new Date(),
|
||||
resolvedBy: 'auto',
|
||||
};
|
||||
}
|
||||
}
|
||||
|
||||
// Can't auto-resolve, needs manual intervention
|
||||
return null;
|
||||
}
|
||||
|
||||
/**
|
||||
* Handle concurrent edits to the same region
|
||||
*/
|
||||
handleConcurrentEdit(localChange: DocumentChange, remoteChange: DocumentChange): MergeStrategy {
|
||||
// Screenplay-specific merge rules
|
||||
|
||||
// Rule 1: If both changes are in the same scene, prefer structured edits
|
||||
if (this.sameScene(localChange, remoteChange)) {
|
||||
// If one is formatting and one is content, accept both
|
||||
if (localChange.type !== remoteChange.type) {
|
||||
return 'auto-merge';
|
||||
}
|
||||
|
||||
// If both are content edits, need manual resolution
|
||||
return 'manual';
|
||||
}
|
||||
|
||||
// Rule 2: If changes are in different scenes, auto-merge
|
||||
return 'auto-merge';
|
||||
}
|
||||
|
||||
/**
|
||||
* Check if two changes are in the same scene
|
||||
*/
|
||||
private sameScene(change1: DocumentChange, change2: DocumentChange): boolean {
|
||||
// In production, would check scene boundaries in the document
|
||||
// For now, assume changes within 500 chars are in the same scene
|
||||
return Math.abs(change1.position - change2.position) < 500;
|
||||
}
|
||||
|
||||
/**
|
||||
* Resolve a conflict manually
|
||||
*/
|
||||
resolveConflict(conflict: Conflict, strategy: MergeStrategy, resolverId: string): boolean {
|
||||
const resolution: Resolution = {
|
||||
strategy,
|
||||
result: strategy === 'accept-local' ? 'local' : strategy === 'accept-remote' ? 'remote' : 'merged',
|
||||
resolvedAt: new Date(),
|
||||
resolvedBy: resolverId,
|
||||
};
|
||||
|
||||
conflict.resolution = resolution;
|
||||
|
||||
// Remove from pending conflicts
|
||||
const index = this.pendingConflicts.indexOf(conflict);
|
||||
if (index > -1) {
|
||||
this.pendingConflicts.splice(index, 1);
|
||||
}
|
||||
|
||||
// Apply resolution
|
||||
if (resolution.result === 'remote') {
|
||||
const text = this.doc.getText('main');
|
||||
this.applyChange(text, {
|
||||
id: conflict.remoteChange.id,
|
||||
userId: conflict.remoteChange.userId,
|
||||
timestamp: conflict.remoteChange.timestamp,
|
||||
type: conflict.remoteChange.type as 'insert' | 'delete' | 'format',
|
||||
position: conflict.remoteChange.position,
|
||||
length: conflict.remoteChange.length,
|
||||
content: conflict.remoteChange.content,
|
||||
});
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
/**
|
||||
* Validate a merge result
|
||||
*/
|
||||
validateMerge(result: MergeResult): boolean {
|
||||
// Check document integrity
|
||||
try {
|
||||
const text = this.doc.getText('main');
|
||||
const content = text.toString();
|
||||
|
||||
// Basic validation: document should not be empty
|
||||
if (content.length === 0) {
|
||||
return false;
|
||||
}
|
||||
|
||||
// Check for corrupted UTF-8 sequences
|
||||
try {
|
||||
new TextDecoder().decode(new TextEncoder().encode(content));
|
||||
return true;
|
||||
} catch {
|
||||
return false;
|
||||
}
|
||||
} catch {
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Get pending conflicts
|
||||
*/
|
||||
getPendingConflicts(): Conflict[] {
|
||||
return [...this.pendingConflicts];
|
||||
}
|
||||
|
||||
/**
|
||||
* Generate unique conflict ID
|
||||
*/
|
||||
private generateConflictId(): string {
|
||||
return `conflict-${Date.now()}-${Math.random().toString(36).substr(2, 9)}`;
|
||||
}
|
||||
}
|
||||
@@ -4,7 +4,7 @@
|
||||
* Integrates with WebSocket for real-time presence updates
|
||||
*/
|
||||
|
||||
import { WebSocketProvider } from 'y-websocket';
|
||||
import { WebsocketProvider } from 'y-websocket';
|
||||
import { WebSocketConnection } from './websocket-connection';
|
||||
|
||||
/**
|
||||
@@ -99,7 +99,7 @@ export class PresenceManager {
|
||||
private idleTimeoutMs: number;
|
||||
private broadcastIntervalMs: number;
|
||||
|
||||
private provider: WebSocketProvider | null = null;
|
||||
private provider: WebsocketProvider | null = null;
|
||||
private connection: WebSocketConnection | null = null;
|
||||
|
||||
// Remote users' presence state
|
||||
@@ -340,39 +340,16 @@ export class PresenceManager {
|
||||
});
|
||||
}
|
||||
|
||||
// Also send custom message for backward compatibility
|
||||
const message: PresenceUpdateMessage = {
|
||||
type: 'presence:update',
|
||||
userId: this.userId,
|
||||
presence: {
|
||||
userId: this.localPresence.userId,
|
||||
name: this.localPresence.name,
|
||||
color: this.localPresence.color,
|
||||
cursorPosition: this.localPresence.cursorPosition,
|
||||
selectionStart: this.localPresence.selectionStart,
|
||||
selectionEnd: this.localPresence.selectionEnd,
|
||||
editingContext: this.localPresence.editingContext,
|
||||
status: this.localPresence.status,
|
||||
},
|
||||
timestamp: Date.now(),
|
||||
};
|
||||
|
||||
this.provider.send(message);
|
||||
// Note: Custom messages are sent via awareness state only
|
||||
// y-websocket doesn't expose a direct send method for custom messages
|
||||
}
|
||||
|
||||
/**
|
||||
* Send user leave message
|
||||
*/
|
||||
private sendLeaveMessage(): void {
|
||||
if (!this.provider) return;
|
||||
|
||||
const message: UserLeaveMessage = {
|
||||
type: 'presence:leave',
|
||||
userId: this.userId,
|
||||
timestamp: Date.now(),
|
||||
};
|
||||
|
||||
this.provider.send(message);
|
||||
// User leave is handled automatically by awareness when connection closes
|
||||
// y-websocket doesn't support custom leave messages
|
||||
}
|
||||
|
||||
/**
|
||||
@@ -489,7 +466,16 @@ export class PresenceManager {
|
||||
|
||||
this.remoteUsers.set(message.userId, joinPresence);
|
||||
this.onUserJoinCallbacks.forEach(callback => {
|
||||
callback(message.userId, message.presence);
|
||||
callback(message.userId, {
|
||||
userId: message.presence.userId,
|
||||
name: message.presence.name,
|
||||
color: message.presence.color,
|
||||
cursorPosition: message.presence.cursorPosition,
|
||||
selectionStart: message.presence.selectionStart,
|
||||
selectionEnd: message.presence.selectionEnd,
|
||||
editingContext: message.presence.editingContext,
|
||||
status: 'active',
|
||||
});
|
||||
});
|
||||
break;
|
||||
|
||||
@@ -506,7 +492,7 @@ export class PresenceManager {
|
||||
Object.entries(message.users).forEach(([userId, presence]) => {
|
||||
const userPresence: UserPresence = {
|
||||
...presence,
|
||||
lastActivity: new Date(presence.lastActivity as unknown as number || Date.now()),
|
||||
lastActivity: new Date(Date.now()),
|
||||
};
|
||||
this.remoteUsers.set(userId, userPresence);
|
||||
});
|
||||
@@ -549,7 +535,7 @@ export function generateUserColor(userId: string): string {
|
||||
hash = userId.charCodeAt(i) + ((hash << 5) - hash);
|
||||
}
|
||||
|
||||
return colors[Math.abs(hash) % colors.length];
|
||||
return colors[Math.abs(hash) % colors.length]!;
|
||||
}
|
||||
|
||||
/**
|
||||
|
||||
@@ -3,6 +3,7 @@
|
||||
* Handles connection lifecycle, reconnection, and authentication
|
||||
*/
|
||||
|
||||
import * as Y from 'yjs';
|
||||
import { WebsocketProvider } from 'y-websocket';
|
||||
import { PresenceManager, PresenceMessage } from './presence-manager';
|
||||
|
||||
@@ -14,6 +15,7 @@ export interface WebSocketConnectionOptions {
|
||||
authToken: string;
|
||||
reconnectInterval?: number;
|
||||
maxReconnectInterval?: number;
|
||||
doc?: Y.Doc;
|
||||
}
|
||||
|
||||
export interface WebSocketConnectionManager {
|
||||
@@ -59,15 +61,22 @@ export class WebSocketConnection implements WebSocketConnectionWithPresence {
|
||||
this.updateStatus('connecting');
|
||||
|
||||
try {
|
||||
// Create or use provided Yjs doc
|
||||
const ydoc = this.options.doc || new Y.Doc();
|
||||
|
||||
// Prepare auth params (y-websocket uses query params for auth)
|
||||
const params: Record<string, string> = {
|
||||
token: this.options.authToken,
|
||||
};
|
||||
|
||||
this.provider = new WebsocketProvider(
|
||||
this.options.serverUrl,
|
||||
this.options.documentName,
|
||||
ydoc,
|
||||
{
|
||||
connectOnLoad: true,
|
||||
// Pass auth token via headers for better security
|
||||
headers: {
|
||||
Authorization: `Bearer ${this.options.authToken}`,
|
||||
},
|
||||
connect: true,
|
||||
params,
|
||||
maxBackoffTime: this.options.maxReconnectInterval || 30000,
|
||||
}
|
||||
);
|
||||
|
||||
@@ -83,23 +92,23 @@ export class WebSocketConnection implements WebSocketConnectionWithPresence {
|
||||
});
|
||||
|
||||
// Wait for initial connection
|
||||
if (this.provider.status === 'connected') {
|
||||
if (this.provider.wsconnected) {
|
||||
this.updateStatus('connected');
|
||||
} else {
|
||||
// Wait for connection event
|
||||
await new Promise<void>((resolve, reject) => {
|
||||
const onConnect = (event: { status: string }) => {
|
||||
if (event.status === 'connected') {
|
||||
this.provider?.off('status', onConnect);
|
||||
this.provider!.off('status', onConnect);
|
||||
resolve();
|
||||
}
|
||||
};
|
||||
const onError = (error: Error) => {
|
||||
this.provider?.off('status', onError);
|
||||
this.provider!.off('status', onError);
|
||||
reject(error);
|
||||
};
|
||||
this.provider.on('status', onConnect);
|
||||
this.provider.on('status', onError);
|
||||
this.provider!.on('status', onConnect);
|
||||
this.provider!.on('status', onError);
|
||||
|
||||
// Timeout after 30 seconds
|
||||
setTimeout(() => {
|
||||
|
||||
Reference in New Issue
Block a user