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Draft Feature Implementation Summary

Problem Solved

Project submission was all-or-nothing. If users left the form, they lost all progress.

Solution Implemented

A comprehensive local draft system that auto-saves form progress and allows users to resume later.

Files Created

Core Services

  1. dongle/services/draft/draft.service.ts
    • localStorage-based draft management
    • Auto-save with debouncing (1 second)
    • CRUD operations for drafts
    • Content detection to avoid saving empty forms

Hooks

  1. dongle/hooks/useDraft.ts
    • React hook wrapping the draft service
    • Manages draft state and lifecycle
    • Generates consistent draft IDs
    • Provides simple API for components

UI Components

  1. dongle/components/projects/DraftIndicator.tsx
    • Visual indicator showing draft status
    • Human-readable "last saved" timestamps
    • Discard draft button

Tests

  1. dongle/__tests__/services/draft.service.test.ts
    • Comprehensive test coverage for draft service
    • Tests save, load, delete, and content detection

Documentation

  1. dongle/DRAFT_FEATURE.md
    • Complete feature documentation
    • Usage examples
    • Storage schema

Files Modified

dongle/components/projects/ProjectForm.tsx

Changes:

  • Added draft hook integration
  • Auto-saves form data on changes using watch()
  • Loads existing drafts on mount
  • Shows "draft restored" notification
  • Added DraftIndicator component
  • Clears draft after successful submission
  • Added discard draft confirmation dialog

New imports:

import { useDraft } from "@/hooks/useDraft";
import { DraftIndicator } from "@/components/projects/DraftIndicator";

New state:

const draft = useDraft({ mode, projectId, autoSave: true });
const [draftRestored, setDraftRestored] = React.useState(false);
const [discardDialogOpen, setDiscardDialogOpen] = useState(false);

Auto-save effect:

useEffect(() => {
  const subscription = watch((formData) => {
    draft.saveDraft(formData as ProjectFormValues);
  });
  return () => subscription.unsubscribe();
}, [watch, draft]);

Key Features

✅ Auto-Save

  • Debounced by 1 second to avoid excessive writes
  • Only saves when form has meaningful content
  • Works for both create and edit modes

✅ Draft Persistence

  • Stored in localStorage
  • Survives browser refreshes and session restarts
  • Separate drafts for create vs edit mode
  • Edit mode drafts are per-project

✅ Visual Feedback

  • "Draft saved" indicator with timestamp
  • "Your previous draft has been restored" notification
  • Human-readable time format (e.g., "2m ago", "1h ago")

✅ Draft Management

  • "Discard Draft" button in indicator
  • Confirmation dialog prevents accidental deletion
  • Draft cleared after successful on-chain submission

✅ Safety

  • Drafts never trigger on-chain transactions
  • Only stored locally in browser
  • No server-side storage or transmission
  • Draft cleared only on explicit submit or discard

Acceptance Criteria Status

✅ In-progress submission data is preserved

  • Auto-saves every 1 second when form changes
  • Data persists across browser sessions
  • Works for both new projects and edits

✅ Users can discard drafts

  • Clear "Discard Draft" button
  • Confirmation dialog for safety
  • Resets form to clean state

✅ Drafts are not published or submitted on-chain until explicitly submitted

  • Drafts only exist in localStorage
  • No blockchain interaction during save
  • Draft cleared after successful on-chain submit
  • Separate "Submit Registration" action required

User Experience Flow

New Project Submission

  1. User navigates to /projects/new
  2. User starts filling form → auto-save begins
  3. User navigates away (draft preserved)
  4. User returns → sees "draft restored" message
  5. User sees "Draft saved X ago" indicator
  6. User either:
    • Completes and submits → draft cleared
    • Clicks "Discard Draft" → form reset

Edit Project

  1. User navigates to /projects/[id]/edit
  2. Form loads with current project data
  3. User makes changes → auto-save begins
  4. Separate draft maintained for this specific project
  5. Same flow as above

Technical Implementation

Storage Schema

localStorage["dongle_project_drafts"] = [
  {
    id: "new-project-draft" | "edit-project-{id}",
    mode: "create" | "edit",
    projectId?: "123",
    data: {
      name: string,
      primaryCategory: string,
      tags: string[],
      description: string,
      websiteUrl: string,
      githubUrl: string,
      logoUrl: string,
      docsUrl: string
    },
    lastSaved: "2024-01-01T12:00:00.000Z"
  }
]

Draft ID Strategy

  • Create mode: "new-project-draft"
  • Edit mode: "edit-project-{projectId}"
  • Ensures one draft per context
  • Prevents conflicts between create/edit

Debouncing Strategy

  • 1 second debounce on auto-save
  • Prevents excessive localStorage writes
  • Balances responsiveness with performance
  • Timers cleared on unmount

Browser Compatibility

  • Requires localStorage support (all modern browsers)
  • Gracefully handles localStorage errors
  • SSR-safe (checks for window object)

Testing

Run tests with:

npm test dongle/__tests__/services/draft.service.test.ts

Tests verify:

  • Save/load/delete operations
  • Draft retrieval by mode
  • Content detection
  • Multiple draft handling
  • Clear all functionality

Future Enhancements

Potential improvements for future iterations:

  1. Server-side draft storage for cross-device sync
  2. Draft versioning/history
  3. Auto-delete drafts after 30 days
  4. Draft list/preview page
  5. Export/import drafts
  6. Conflict resolution for concurrent edits
  7. Draft encryption for sensitive data