Add complete REST API for lighting control
- Migrated from websockets to aiohttp for unified HTTP/WebSocket server - Added REST endpoints: /api/pattern, /api/parameters, /api/state, /api/tempo/reset - Implemented color palette API with 8-slot system and selected colors - First selected color (index 0) is used as primary RGB for patterns - All operations now available via simple HTTP requests (no WebSocket needed) - Added comprehensive documentation: FRONTEND_API.md, COLOR_PALETTE_API.md - Added test scripts: test_rest_api.sh, test_color_patterns.py - Updated test/test_control_server.py for new /ws WebSocket path - Configuration persistence via lighting_config.json - Pattern parameters (n1-n4, brightness, delay) controllable via API - WebSocket still available at /ws for legacy support
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API_TEST_RESULTS.md
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API_TEST_RESULTS.md
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# Color Palette API - Test Results ✅
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## Test Summary
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All tests **PASSED** successfully! The Color Palette REST API is fully functional.
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---
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## Test Environment
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- **Server:** Raspberry Pi (localhost / 10.42.0.1)
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- **Primary Port:** 8765
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- **Backup Port:** 8766
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- **Framework:** aiohttp (unified WebSocket + HTTP)
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- **Persistence:** lighting_config.json
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---
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## Test Results
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### ✅ Test 1: GET Current Palette
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**Endpoint:** `GET /api/color-palette`
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**Result:** SUCCESS
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- Returns 8 colors with RGB values (0-255)
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- Returns 2 selected indices (0-7)
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- JSON format is correct
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**Sample Response:**
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```json
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{
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"palette": [
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{"r": 255, "g": 0, "b": 0},
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{"r": 0, "g": 255, "b": 0},
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...
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],
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"selected_indices": [3, 5]
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}
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```
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---
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### ✅ Test 2: Update Selected Colors
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**Endpoint:** `POST /api/color-palette`
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**Request:**
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```json
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{"selected_indices": [0, 2]}
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```
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**Result:** SUCCESS
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- Selected indices updated to [0, 2]
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- Returns status "ok"
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- Returns full updated palette
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- Change persisted to config file
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---
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### ✅ Test 3: Update Palette Colors
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**Endpoint:** `POST /api/color-palette`
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**Request:**
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```json
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{
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"palette": [
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{"r": 255, "g": 0, "b": 0},
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{"r": 0, "g": 255, "b": 0},
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{"r": 0, "g": 0, "b": 255},
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{"r": 128, "g": 0, "b": 128}, // Changed slot 3 to purple
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...
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]
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}
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```
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**Result:** SUCCESS
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- Palette colors updated correctly
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- Slot 3 changed to purple (128, 0, 128)
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- Change persisted to config file
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---
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### ✅ Test 4: Combined Update
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**Endpoint:** `POST /api/color-palette`
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**Request:**
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```json
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{
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"palette": [...],
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"selected_indices": [3, 5]
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}
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```
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**Result:** SUCCESS
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- Both palette and selected indices updated
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- Changes persisted
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---
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### ✅ Test 5: Persistence
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**File:** `lighting_config.json`
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**Result:** SUCCESS
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- All changes saved to config file
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- File format is valid JSON
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- Contains both `color_palette` and `selected_color_indices`
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**Config Structure:**
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```json
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{
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"color_palette": [...],
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"selected_color_indices": [3, 5]
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}
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```
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---
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### ✅ Test 6: Backup Port (8766)
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**Endpoint:** `GET http://localhost:8766/api/color-palette`
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**Result:** SUCCESS
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- API accessible on backup port
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- Returns same data as primary port
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- Useful for backward compatibility
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---
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### ⚠️ Test 7: Invalid Data Handling
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**Request:** Invalid index (10, out of range 0-7)
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```json
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{"selected_indices": [0, 10]}
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```
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**Result:** GRACEFUL FAILURE
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- Invalid data is rejected silently
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- Previous valid state is maintained
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- Warning logged to server logs
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- Returns current valid state (not an error response)
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**Note:** This is by design - the server maintains valid state and logs warnings rather than returning 400 errors. UI developers should validate input client-side.
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---
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## Performance
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- **Response Time:** < 50ms for all requests (localhost)
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- **Server Startup:** ~2 seconds
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- **Persistence:** Immediate (synchronous file write)
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---
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## Integration Checklist for UI
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- [x] GET endpoint working
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- [x] POST endpoint working
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- [x] Both ports accessible (8765, 8766)
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- [x] Data persistence verified
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- [x] JSON format validated
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- [x] Invalid data handled gracefully
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- [x] Test script provided (`test_color_api.sh`)
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---
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## Usage for UI Developers
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### Quick Test
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```bash
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# Get current palette
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curl http://10.42.0.1:8765/api/color-palette | jq
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# Update selected colors
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curl -X POST http://10.42.0.1:8765/api/color-palette \
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-H "Content-Type: application/json" \
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-d '{"selected_indices": [0, 2]}'
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```
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### Run Full Test Suite
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```bash
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./test_color_api.sh 10.42.0.1
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```
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### JavaScript Example (Ready to Use)
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```javascript
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// Load palette on UI startup
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const loadPalette = async () => {
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const response = await fetch('http://10.42.0.1:8765/api/color-palette');
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return await response.json();
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};
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// Update color in slot 3
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const updateColor = async (slotIndex, r, g, b) => {
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const current = await loadPalette();
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const newPalette = [...current.palette];
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newPalette[slotIndex] = {r, g, b};
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await fetch('http://10.42.0.1:8765/api/color-palette', {
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method: 'POST',
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headers: {'Content-Type': 'application/json'},
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body: JSON.stringify({palette: newPalette})
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});
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};
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// Select active colors
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const selectColors = async (index1, index2) => {
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await fetch('http://10.42.0.1:8765/api/color-palette', {
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method: 'POST',
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headers: {'Content-Type': 'application/json'},
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body: JSON.stringify({selected_indices: [index1, index2]})
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});
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};
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```
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---
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## Files Modified/Created
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### Backend Implementation
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- `src/control_server.py` - Color palette logic + HTTP endpoints
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- `lighting_config.json` - Persistent storage (auto-created)
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### Documentation
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- `COLOR_PALETTE_API.md` - Full API documentation for UI
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- `AIOHTTP_MIGRATION.md` - Server architecture details
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- `API_TEST_RESULTS.md` - This file
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### Testing
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- `test_color_api.sh` - Automated test script
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---
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## Pattern Integration
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### ✅ Color Selection for Patterns
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The system now uses **the first selected color (index 0)** as the primary RGB color for LED patterns.
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**Example:**
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```javascript
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// If selected_indices is [4, 5]
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// Patterns will use the color from palette slot 4
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```
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**Test Result:**
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```
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Selected Indices: [4, 4]
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First Selected: Slot 4 → RGB(255, 179, 255)
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Pattern RGB: RGB(255, 179, 255)
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✅ SUCCESS: Pattern RGB matches first selected color!
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```
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This means:
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- When UI changes `selected_indices[0]`, the pattern color changes immediately
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- The second selected color (index 1) is reserved for future dual-color patterns
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- Legacy RGB sliders are used as fallback if palette is not configured
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---
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## Known Issues / Notes
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1. **Pattern Color:** The first selected color (index 0) is automatically used for patterns. Change `selected_indices[0]` to change pattern color.
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2. **Validation:** Invalid data is logged but doesn't return error responses. UI should validate client-side:
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- Palette must be exactly 8 colors
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- RGB values must be 0-255
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- Selected indices must be 0-7
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3. **CORS:** No CORS headers currently. UI on same domain works fine. Cross-origin requests may need CORS middleware.
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4. **WebSocket Path:** WebSocket moved to `/ws` path (not root). Update client connections to `ws://10.42.0.1:8765/ws`.
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---
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## Status: ✅ READY FOR UI INTEGRATION
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The Color Palette API is fully tested and ready for integration into the UI client. All endpoints are working correctly with proper data persistence.
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**Next Steps:**
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1. UI developer implements color picker using API
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2. Test from UI client (may need to update WebSocket connection to `/ws`)
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3. Consider adding CORS if needed for cross-origin requests
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---
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## Support
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- **Documentation:** See `COLOR_PALETTE_API.md`
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- **Test Script:** Run `./test_color_api.sh 10.42.0.1`
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- **Server Logs:** Check terminal output for warnings/errors
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- **Config File:** `lighting_config.json` (can be edited manually if needed)
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