# Story Writer Frontend Foundation - Phase 2 Complete

## Overview
Phase 2: Frontend Foundation has been completed. The frontend is now ready for end-to-end testing with the backend.

## What Was Created

### 1. API Service Layer (`frontend/src/services/storyWriterApi.ts`)
- Complete TypeScript API service for all story generation endpoints
- Methods for:
  - `generatePremise()` - Generate story premise
  - `generateOutline()` - Generate story outline from premise
  - `generateStoryStart()` - Generate starting section of story
  - `continueStory()` - Continue writing a story
  - `generateFullStory()` - Generate complete story asynchronously
  - `getTaskStatus()` - Get task status for async operations
  - `getTaskResult()` - Get result of completed task
  - `getCacheStats()` - Get cache statistics
  - `clearCache()` - Clear story generation cache

### 2. State Management Hook (`frontend/src/hooks/useStoryWriterState.ts`)
- Comprehensive state management for story writer
- Manages:
  - Story parameters (persona, setting, characters, plot, style, tone, POV, audience, rating, ending)
  - Generated content (premise, outline, story content)
  - Task management (task ID, progress, messages)
  - UI state (loading, errors)
- Persists state to localStorage
- Provides helper methods and setters

### 3. Phase Navigation Hook (`frontend/src/hooks/useStoryWriterPhaseNavigation.ts`)
- Manages phase navigation logic
- Five phases: Setup → Premise → Outline → Writing → Export
- Auto-progression based on completion status
- Manual phase selection support
- Phase state management (completed, current, disabled)
- Persists current phase to localStorage

### 4. Main Component (`frontend/src/components/StoryWriter/StoryWriter.tsx`)
- Main StoryWriter component
- Integrates state management and phase navigation
- Renders appropriate phase component based on current phase
- Clean, modern UI with Material-UI

### 5. Phase Navigation Component (`frontend/src/components/StoryWriter/PhaseNavigation.tsx`)
- Visual phase stepper using Material-UI Stepper
- Shows phase icons, names, and descriptions
- Clickable phases (when not disabled)
- Visual indicators for current, completed, and disabled phases

### 6. Phase Components

#### StorySetup (`frontend/src/components/StoryWriter/Phases/StorySetup.tsx`)
- Form for configuring story parameters
- All required fields: Persona, Setting, Characters, Plot Elements
- Optional fields: Writing Style, Tone, POV, Audience, Rating, Ending
- Validates required fields before generation
- Calls `generatePremise()` API
- Auto-navigates to Premise phase on success

#### StoryPremise (`frontend/src/components/StoryWriter/Phases/StoryPremise.tsx`)
- Displays and allows editing of generated premise
- Regenerate premise functionality
- Continue to Outline button

#### StoryOutline (`frontend/src/components/StoryWriter/Phases/StoryOutline.tsx`)
- Generates outline from premise
- Displays and allows editing of outline
- Regenerate outline functionality
- Continue to Writing button

#### StoryWriting (`frontend/src/components/StoryWriter/Phases/StoryWriting.tsx`)
- Generates starting section of story
- Continue writing functionality (iterative)
- Displays complete story content
- Shows completion status
- Continue to Export button

#### StoryExport (`frontend/src/components/StoryWriter/Phases/StoryExport.tsx`)
- Displays complete story with summary
- Shows premise and outline
- Copy to clipboard functionality
- Download as text file functionality

### 7. Route Integration
- Added route `/story-writer` to `App.tsx`
- Protected route (requires authentication)
- Imported StoryWriter component

## File Structure

```
frontend/src/
├── services/
│   └── storyWriterApi.ts          # API service layer
├── hooks/
│   ├── useStoryWriterState.ts     # State management hook
│   └── useStoryWriterPhaseNavigation.ts  # Phase navigation hook
└── components/
    └── StoryWriter/
        ├── index.ts               # Exports
        ├── StoryWriter.tsx       # Main component
        ├── PhaseNavigation.tsx    # Phase stepper component
        └── Phases/
            ├── StorySetup.tsx     # Phase 1: Setup
            ├── StoryPremise.tsx   # Phase 2: Premise
            ├── StoryOutline.tsx   # Phase 3: Outline
            ├── StoryWriting.tsx   # Phase 4: Writing
            └── StoryExport.tsx    # Phase 5: Export
```

## API Integration

All API calls are properly integrated:
- Uses `aiApiClient` for AI operations (3-minute timeout)
- Uses `pollingApiClient` for status checks
- Proper error handling with user-friendly messages
- Query parameters correctly formatted for backend endpoints

## Testing Checklist

### End-to-End Testing Steps

1. **Setup Phase**
   - [ ] Navigate to `/story-writer`
   - [ ] Fill in required fields (Persona, Setting, Characters, Plot Elements)
   - [ ] Select optional fields (Style, Tone, POV, Audience, Rating, Ending)
   - [ ] Click "Generate Premise"
   - [ ] Verify API call is made to `/api/story/generate-premise`
   - [ ] Verify premise is generated and displayed
   - [ ] Verify auto-navigation to Premise phase

2. **Premise Phase**
   - [ ] Verify premise is displayed
   - [ ] Edit premise (optional)
   - [ ] Test "Regenerate Premise" button
   - [ ] Click "Continue to Outline"
   - [ ] Verify navigation to Outline phase

3. **Outline Phase**
   - [ ] Click "Generate Outline"
   - [ ] Verify API call is made to `/api/story/generate-outline?premise=...`
   - [ ] Verify outline is generated and displayed
   - [ ] Test "Regenerate Outline" button
   - [ ] Click "Continue to Writing"
   - [ ] Verify navigation to Writing phase

4. **Writing Phase**
   - [ ] Click "Generate Story"
   - [ ] Verify API call is made to `/api/story/generate-start?premise=...&outline=...`
   - [ ] Verify story content is generated
   - [ ] Test "Continue Writing" button (if story not complete)
   - [ ] Verify API call is made to `/api/story/continue`
   - [ ] Verify story continues and updates
   - [ ] Verify completion status when story is complete
   - [ ] Click "Continue to Export"
   - [ ] Verify navigation to Export phase

5. **Export Phase**
   - [ ] Verify complete story is displayed
   - [ ] Verify premise and outline are shown
   - [ ] Test "Copy to Clipboard" button
   - [ ] Test "Download as Text File" button

6. **Error Handling**
   - [ ] Test with missing required fields
   - [ ] Test with invalid API responses
   - [ ] Test network errors
   - [ ] Verify error messages are displayed

7. **State Persistence**
   - [ ] Refresh page and verify state is restored from localStorage
   - [ ] Verify current phase is restored
   - [ ] Verify all form data is restored

8. **Phase Navigation**
   - [ ] Test clicking on different phases
   - [ ] Verify disabled phases cannot be accessed
   - [ ] Verify phase progression logic

## Next Steps

1. **End-to-End Testing**: Test all phases with the backend
2. **Error Handling**: Enhance error messages and recovery
3. **Loading States**: Add better loading indicators
4. **UX Improvements**: Add animations, transitions, and polish
5. **CopilotKit Integration**: Add CopilotKit actions and sidebar (Phase 4)
6. **Styling**: Enhance visual design and responsiveness

## Notes

- All components use Material-UI for consistent styling
- State is persisted to localStorage for recovery on page refresh
- Phase navigation supports both auto-progression and manual selection
- API calls use proper error handling and loading states
- All TypeScript types are properly defined

## Known Limitations

- No CopilotKit integration yet (Phase 4)
- No async task polling for full story generation (can be added)
- Basic error handling (can be enhanced)
- No undo/redo functionality
- No draft saving to backend
