# Supervertaler Qt v1.0.0 - Phase 2 Implementation Complete

## Phase 2: Provider & Model Selection UI

### ✅ Completed Features

#### 1. **Enhanced Settings Dialog**
- **Location**: Tools → Options (reorganized as tabbed dialog)
- **Tabs**:
  - 🤖 **LLM Settings** - Configure translation providers
  - ⚙️ **General** - Application settings

#### 2. **LLM Provider Selection**
Users can now choose between three providers:
- **OpenAI** (GPT-4o, GPT-5, o1, o3)
- **Anthropic Claude** (Claude 3.5 Sonnet, Haiku, Opus)
- **Google Gemini** (Gemini 2.0 Flash, 1.5 Pro/Flash)

#### 3. **Model Selection per Provider**

**OpenAI Models:**
- gpt-4o (Recommended)
- gpt-4o-mini (Fast & Economical)
- gpt-5 (Reasoning, Temperature 1.0)
- o3-mini (Reasoning, Temperature 1.0)
- o1 (Reasoning, Temperature 1.0)
- gpt-4-turbo

**Claude Models:**
- claude-3-5-sonnet-20241022 (Recommended)
- claude-3-5-haiku-20241022 (Fast)
- claude-3-opus-20240229 (Powerful)

**Gemini Models:**
- gemini-2.0-flash-exp (Recommended)
- gemini-1.5-pro
- gemini-1.5-flash

#### 4. **Intelligent Settings Persistence**
- Settings saved to: `user data_private/ui_preferences.json`
- Automatically loads on app startup
- Survives app restarts

#### 5. **API Keys Management**
- **View keys location** in settings dialog
- **One-click button** to open `api_keys.txt` in system editor
- Auto-creates `api_keys.txt` from example if it doesn't exist
- Platform-aware file opening (Windows/macOS/Linux)

#### 6. **Smart Translation Flow**
- Uses saved provider/model preferences
- Checks for required API key before translating
- Offers to open settings if key is missing
- Shows provider & model in status messages

### 🎯 User Experience Improvements

#### Before Phase 2:
```
❌ Hardcoded to OpenAI GPT-4o only
❌ No way to change provider
❌ No model selection
❌ Confusing error messages
```

#### After Phase 2:
```
✅ Choose any provider (OpenAI/Claude/Gemini)
✅ Select specific model for each provider
✅ Settings persist across sessions
✅ Helpful dialogs guide configuration
✅ One-click API key file access
```

### 📋 Technical Implementation

#### New Functions Added

**`show_options_dialog()`** - Enhanced settings dialog
- Tabbed interface for organized settings
- Provider radio buttons with live UI updates
- Model dropdowns that enable/disable based on provider
- Save/load settings to JSON
- API keys file management

**`load_llm_settings()`** - Load saved preferences
- Returns dict with provider and model selections
- Defaults to OpenAI/gpt-4o if no settings exist
- Handles corrupt/missing preference files gracefully

**`save_llm_settings()`** - Persist user choices
- Saves to `ui_preferences.json`
- Preserves other preferences in file
- Error handling for write failures

**`open_api_keys_file()`** - API key file helper
- Creates file from example if missing
- Opens in system default text editor
- Cross-platform support (Windows/Mac/Linux)

#### Updated Functions

**`translate_current_segment()`** - Now uses saved settings
- Loads provider from preferences
- Loads model from preferences
- Validates API key for chosen provider
- Shows provider/model in status messages
- Offers to open settings if configuration missing

### 🔧 Files Modified

**Supervertaler_Qt_v1.0.0.py**:
- Lines 2003-2308: New enhanced settings dialog
- Lines 2666-2758: Updated translation function
- Added comprehensive error handling
- Added user-friendly configuration prompts

### 📊 Settings Storage Format

**ui_preferences.json**:
```json
{
  "llm_settings": {
    "provider": "openai",
    "openai_model": "gpt-4o",
    "claude_model": "claude-3-5-sonnet-20241022",
    "gemini_model": "gemini-2.0-flash-exp"
  }
}
```

### 🎨 UI Features

1. **Radio Buttons** for provider selection
2. **Dropdown Combos** for model selection
3. **Dynamic UI Updates** - Combos enable/disable based on provider
4. **Information Panels** - Show API keys file location
5. **Action Buttons** - One-click to open API keys file
6. **Tabbed Layout** - Organized settings categories

### ✅ Testing Checklist

- [x] App compiles without errors
- [x] Settings dialog opens from Tools menu
- [x] All three providers selectable
- [x] Model dropdowns show correct options
- [x] Settings persist after restart
- [x] Translation uses saved settings
- [x] API key validation works
- [x] "Open API Keys" button works
- [x] Missing key prompts to configure

### 🚀 Next Phase Preview

**Phase 3: Batch Translation**
- Select multiple segments
- Translate in bulk
- Progress dialog with live updates
- Chunking for large batches
- Pause/resume capability

### 📝 User Documentation

#### How to Configure LLM Settings

1. **Open Settings**:
   - Menu: Tools → Options
   - Or: Click any error about missing API keys

2. **Go to LLM Settings Tab**:
   - Click the "🤖 LLM Settings" tab

3. **Choose Your Provider**:
   - Select OpenAI, Claude, or Gemini
   - The model dropdown will update

4. **Select Your Model**:
   - Choose from the available models
   - Reasoning models (GPT-5, o1, o3) noted with "Temperature 1.0"

5. **Configure API Keys**:
   - Click "📝 Open API Keys File"
   - Add your API key for the chosen provider
   - Format: `openai=sk-your-key-here`

6. **Save and Start Translating**:
   - Click OK to save
   - Select a segment
   - Press Ctrl+T to translate

### 🔐 Security Notes

- API keys stored in `user data_private/` (git-ignored)
- Example file in `user data/` (safe to commit)
- Settings file can be committed (no sensitive data)
- Keys never logged or displayed in UI

### 📊 Phase 2 Statistics

- **Lines Added**: ~350
- **New Functions**: 3
- **Updated Functions**: 1
- **UI Components**: 15+ widgets
- **Providers Supported**: 3
- **Models Available**: 12+
- **Settings Persisted**: 4 keys

---

**Completion Date**: 2025-01-27  
**Status**: ✅ COMPLETE - Ready for Phase 3  
**Next**: Batch Translation Implementation
