ALwrity/docs/PODCAST_PERSISTENCE_IMPLEMENTATION.md

Podcast Maker - Persistence & Asset Library Integration

✅ Phase 1 Implementation Complete

1. Backend Changes

AssetSource Enum Update

• ✅ Added PODCAST_MAKER = "podcast_maker" to backend/models/content_asset_models.py
• Allows podcast episodes to be tracked in the unified asset library

Content Assets API Enhancement

• ✅ Added POST /api/content-assets/ endpoint in backend/api/content_assets/router.py
• Enables frontend to save audio files directly to asset library
• Validates asset_type and source_module enums
• Returns created asset with full metadata

2. Frontend Changes

Persistence Hook (usePodcastProjectState.ts)

• ✅ Created comprehensive state management hook
• ✅ Auto-saves to localStorage on every state change
• ✅ Restores state on page load/refresh
• ✅ Tracks all project data:
  • Project metadata (id, idea, duration, speakers)
  • Step results (analysis, queries, research, script)
  • Render jobs with status and progress
  • Settings (knobs, research provider, budget cap)
  • UI state (current step, visibility flags)
• ✅ Handles Set serialization/deserialization for JSON storage
• ✅ Provides helper functions: resetState, initializeProject

Podcast Dashboard Integration

• ✅ Refactored PodcastDashboard.tsx to use persistence hook
• ✅ All state now persists automatically
• ✅ Resume alert shows when project is restored
• ✅ "My Episodes" button navigates to Asset Library filtered by podcasts
• ✅ Recent Episodes preview component shows latest 6 episodes

Render Queue Enhancement

• ✅ Updated to use persisted render jobs
• ✅ Auto-saves completed audio files to Asset Library
• ✅ Includes metadata: project_id, scene_id, cost, provider, model
• ✅ Proper initialization when moving to render phase

Script Editor Enhancement

• ✅ Syncs script changes with persisted state
• ✅ Prevents regeneration if script already exists
• ✅ Scene approvals persist across refreshes

Asset Library Integration

• ✅ Updated AssetLibrary.tsx to read URL search params
• ✅ Supports filtering by source_module and asset_type from URL
• ✅ Navigation: /asset-library?source_module=podcast_maker&asset_type=audio

3. API Service Updates

Podcast API (podcastApi.ts)

• ✅ Added saveAudioToAssetLibrary() function
• ✅ Saves audio files with proper metadata
• ✅ Tags assets with project_id for easy filtering
• ✅ Includes cost, provider, and model information

🔄 How It Works

LocalStorage Persistence Flow

1. User creates project → State saved to localStorage with key podcast_project_state
2. Each step completion → State automatically updated in localStorage
3. Browser refresh → State restored from localStorage on mount
4. Resume alert → Shows which step was in progress
5. Audio generation → Completed files saved to Asset Library via API

Asset Library Integration Flow

1. Audio render completes → saveAudioToAssetLibrary() called
2. Backend saves asset → Creates entry in content_assets table
3. Asset appears in library → Filterable by source_module=podcast_maker
4. User navigates → "My Episodes" button opens filtered Asset Library view
5. Unified management → All podcast episodes visible alongside other content

📋 State Structure

interface PodcastProjectState {
  // Project metadata
  project: { id: string; idea: string; duration: number; speakers: number } | null;
  
  // Step results
  analysis: PodcastAnalysis | null;
  queries: Query[];
  selectedQueries: Set<string>;
  research: Research | null;
  rawResearch: BlogResearchResponse | null;
  estimate: PodcastEstimate | null;
  scriptData: Script | null;
  
  // Render jobs
  renderJobs: Job[];
  
  // Settings
  knobs: Knobs;
  researchProvider: ResearchProvider;
  budgetCap: number;
  
  // UI state
  showScriptEditor: boolean;
  showRenderQueue: boolean;
  currentStep: 'create' | 'analysis' | 'research' | 'script' | 'render' | null;
  
  // Timestamps
  createdAt?: string;
  updatedAt?: string;
}

🎯 User Experience

Resume After Refresh

• User creates project → Works on analysis → Refreshes browser
• ✅ Project state restored
• ✅ Resume alert shows "Resuming from Analysis step"
• ✅ User can continue where they left off

Resume After Restart

• User completes research → Closes browser → Returns later
• ✅ Project state restored from localStorage
• ✅ All research data available
• ✅ Can proceed to script generation

Asset Library Access

• User completes episode → Audio saved to library
• ✅ "My Episodes" button shows all podcast episodes
• ✅ Filtered view: source_module=podcast_maker&asset_type=audio
• ✅ Can download, share, favorite episodes
• ✅ Unified with all other ALwrity content

🚀 Phase 2: Database Persistence (Future)

For long-term persistence across devices/browsers:

1. Create podcast_projects table or use content_assets with project metadata
2. Add endpoints:
   • POST /api/podcast/projects - Save project snapshot
   • GET /api/podcast/projects/{id} - Load project
   • GET /api/podcast/projects - List user's projects
3. Sync strategy: Save to DB after each major step completion
4. Resume UI: Show list of saved projects on dashboard

✅ Testing Checklist

• Project state persists after browser refresh
• Resume alert shows correct step
• Script doesn't regenerate if already exists
• Render jobs persist and restore correctly
• Audio files save to Asset Library
• Asset Library filters by podcast_maker
• Navigation to Asset Library works
• Recent Episodes preview displays correctly
• No console errors or warnings

📝 Notes

• localStorage limit: ~5-10MB per domain. Podcast projects are typically <100KB, so safe.
• Data loss risk: localStorage can be cleared by user. Phase 2 (DB persistence) will address this.
• Cross-device: localStorage is browser-specific. Phase 2 will enable cross-device access.
• Performance: Auto-save happens on every state change. Debouncing could be added if needed.