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Author SHA1 Message Date
Josh Hawkins
789a7d12a2 fix verified icon overlay in debug view list 2026-01-27 10:32:35 -06:00
Nicolas Mowen
a2e2b70c61 revert other changes 2026-01-26 08:03:13 -07:00
4 changed files with 391 additions and 9 deletions

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@@ -1,3 +1,385 @@
- For Frigate NVR, never write strings in the frontend directly. Since the project uses `react-i18next`, use `t()` and write the English string in the relevant translations file in `web/public/locales/en`.
- Always conform new and refactored code to the existing coding style in the project.
- Always have a way to test your work and confirm your changes. When running backend tests, use `python3 -u -m unittest`.
# GitHub Copilot Instructions for Frigate NVR
This document provides coding guidelines and best practices for contributing to Frigate NVR, a complete and local NVR designed for Home Assistant with AI object detection.
## Project Overview
Frigate NVR is a realtime object detection system for IP cameras that uses:
- **Backend**: Python 3.13+ with FastAPI, OpenCV, TensorFlow/ONNX
- **Frontend**: React with TypeScript, Vite, TailwindCSS
- **Architecture**: Multiprocessing design with ZMQ and MQTT communication
- **Focus**: Minimal resource usage with maximum performance
## Code Review Guidelines
When reviewing code, do NOT comment on:
- Missing imports - Static analysis tooling catches these
- Code formatting - Ruff (Python) and Prettier (TypeScript/React) handle formatting
- Minor style inconsistencies already enforced by linters
## Python Backend Standards
### Python Requirements
- **Compatibility**: Python 3.13+
- **Language Features**: Use modern Python features:
- Pattern matching
- Type hints (comprehensive typing preferred)
- f-strings (preferred over `%` or `.format()`)
- Dataclasses
- Async/await patterns
### Code Quality Standards
- **Formatting**: Ruff (configured in `pyproject.toml`)
- **Linting**: Ruff with rules defined in project config
- **Type Checking**: Use type hints consistently
- **Testing**: unittest framework - use `python3 -u -m unittest` to run tests
- **Language**: American English for all code, comments, and documentation
### Logging Standards
- **Logger Pattern**: Use module-level logger
```python
import logging
logger = logging.getLogger(__name__)
```
- **Format Guidelines**:
- No periods at end of log messages
- No sensitive data (keys, tokens, passwords)
- Use lazy logging: `logger.debug("Message with %s", variable)`
- **Log Levels**:
- `debug`: Development and troubleshooting information
- `info`: Important runtime events (startup, shutdown, state changes)
- `warning`: Recoverable issues that should be addressed
- `error`: Errors that affect functionality but don't crash the app
- `exception`: Use in except blocks to include traceback
### Error Handling
- **Exception Types**: Choose most specific exception available
- **Try/Catch Best Practices**:
- Only wrap code that can throw exceptions
- Keep try blocks minimal - process data after the try/except
- Avoid bare exceptions except in background tasks
Bad pattern:
```python
try:
data = await device.get_data() # Can throw
# ❌ Don't process data inside try block
processed = data.get("value", 0) * 100
result = processed
except DeviceError:
logger.error("Failed to get data")
```
Good pattern:
```python
try:
data = await device.get_data() # Can throw
except DeviceError:
logger.error("Failed to get data")
return
# ✅ Process data outside try block
processed = data.get("value", 0) * 100
result = processed
```
### Async Programming
- **External I/O**: All external I/O operations must be async
- **Best Practices**:
- Avoid sleeping in loops - use `asyncio.sleep()` not `time.sleep()`
- Avoid awaiting in loops - use `asyncio.gather()` instead
- No blocking calls in async functions
- Use `asyncio.create_task()` for background operations
- **Thread Safety**: Use proper synchronization for shared state
### Documentation Standards
- **Module Docstrings**: Concise descriptions at top of files
```python
"""Utilities for motion detection and analysis."""
```
- **Function Docstrings**: Required for public functions and methods
```python
async def process_frame(frame: ndarray, config: Config) -> Detection:
"""Process a video frame for object detection.
Args:
frame: The video frame as numpy array
config: Detection configuration
Returns:
Detection results with bounding boxes
"""
```
- **Comment Style**:
- Explain the "why" not just the "what"
- Keep lines under 88 characters when possible
- Use clear, descriptive comments
### File Organization
- **API Endpoints**: `frigate/api/` - FastAPI route handlers
- **Configuration**: `frigate/config/` - Configuration parsing and validation
- **Detectors**: `frigate/detectors/` - Object detection backends
- **Events**: `frigate/events/` - Event management and storage
- **Utilities**: `frigate/util/` - Shared utility functions
## Frontend (React/TypeScript) Standards
### Internationalization (i18n)
- **CRITICAL**: Never write user-facing strings directly in components
- **Always use react-i18next**: Import and use the `t()` function
```tsx
import { useTranslation } from "react-i18next";
function MyComponent() {
const { t } = useTranslation(["views/live"]);
return <div>{t("camera_not_found")}</div>;
}
```
- **Translation Files**: Add English strings to the appropriate json files in `web/public/locales/en`
- **Namespaces**: Organize translations by feature/view (e.g., `views/live`, `common`, `views/system`)
### Code Quality
- **Linting**: ESLint (see `web/.eslintrc.cjs`)
- **Formatting**: Prettier with Tailwind CSS plugin
- **Type Safety**: TypeScript strict mode enabled
- **Testing**: Vitest for unit tests
### Component Patterns
- **UI Components**: Use Radix UI primitives (in `web/src/components/ui/`)
- **Styling**: TailwindCSS with `cn()` utility for class merging
- **State Management**: React hooks (useState, useEffect, useCallback, useMemo)
- **Data Fetching**: Custom hooks with proper loading and error states
### ESLint Rules
Key rules enforced:
- `react-hooks/rules-of-hooks`: error
- `react-hooks/exhaustive-deps`: error
- `no-console`: error (use proper logging or remove)
- `@typescript-eslint/no-explicit-any`: warn (always use proper types instead of `any`)
- Unused variables must be prefixed with `_`
- Comma dangles required for multiline objects/arrays
### File Organization
- **Pages**: `web/src/pages/` - Route components
- **Views**: `web/src/views/` - Complex view components
- **Components**: `web/src/components/` - Reusable components
- **Hooks**: `web/src/hooks/` - Custom React hooks
- **API**: `web/src/api/` - API client functions
- **Types**: `web/src/types/` - TypeScript type definitions
## Testing Requirements
### Backend Testing
- **Framework**: Python unittest
- **Run Command**: `python3 -u -m unittest`
- **Location**: `frigate/test/`
- **Coverage**: Aim for comprehensive test coverage of core functionality
- **Pattern**: Use `TestCase` classes with descriptive test method names
```python
class TestMotionDetection(unittest.TestCase):
def test_detects_motion_above_threshold(self):
# Test implementation
```
### Test Best Practices
- Always have a way to test your work and confirm your changes
- Write tests for bug fixes to prevent regressions
- Test edge cases and error conditions
- Mock external dependencies (cameras, APIs, hardware)
- Use fixtures for test data
## Development Commands
### Python Backend
```bash
# Run all tests
python3 -u -m unittest
# Run specific test file
python3 -u -m unittest frigate.test.test_ffmpeg_presets
# Check formatting (Ruff)
ruff format --check frigate/
# Apply formatting
ruff format frigate/
# Run linter
ruff check frigate/
```
### Frontend (from web/ directory)
```bash
# Start dev server (AI agents should never run this directly unless asked)
npm run dev
# Build for production
npm run build
# Run linter
npm run lint
# Fix linting issues
npm run lint:fix
# Format code
npm run prettier:write
```
### Docker Development
AI agents should never run these commands directly unless instructed.
```bash
# Build local image
make local
# Build debug image
make debug
```
## Common Patterns
### API Endpoint Pattern
```python
from fastapi import APIRouter, Request
from frigate.api.defs.tags import Tags
router = APIRouter(tags=[Tags.Events])
@router.get("/events")
async def get_events(request: Request, limit: int = 100):
"""Retrieve events from the database."""
# Implementation
```
### Configuration Access
```python
# Access Frigate configuration
config: FrigateConfig = request.app.frigate_config
camera_config = config.cameras["front_door"]
```
### Database Queries
```python
from frigate.models import Event
# Use Peewee ORM for database access
events = (
Event.select()
.where(Event.camera == camera_name)
.order_by(Event.start_time.desc())
.limit(limit)
)
```
## Common Anti-Patterns to Avoid
### ❌ Avoid These
```python
# Blocking operations in async functions
data = requests.get(url) # ❌ Use async HTTP client
time.sleep(5) # ❌ Use asyncio.sleep()
# Hardcoded strings in React components
<div>Camera not found</div> # ❌ Use t("camera_not_found")
# Missing error handling
data = await api.get_data() # ❌ No exception handling
# Bare exceptions in regular code
try:
value = await sensor.read()
except Exception: # ❌ Too broad
logger.error("Failed")
```
### ✅ Use These Instead
```python
# Async operations
import aiohttp
async with aiohttp.ClientSession() as session:
async with session.get(url) as response:
data = await response.json()
await asyncio.sleep(5) # ✅ Non-blocking
# Translatable strings in React
const { t } = useTranslation();
<div>{t("camera_not_found")}</div> # ✅ Translatable
# Proper error handling
try:
data = await api.get_data()
except ApiException as err:
logger.error("API error: %s", err)
raise
# Specific exceptions
try:
value = await sensor.read()
except SensorException as err: # ✅ Specific
logger.exception("Failed to read sensor")
```
## Project-Specific Conventions
### Configuration Files
- Main config: `config/config.yml`
### Directory Structure
- Backend code: `frigate/`
- Frontend code: `web/`
- Docker files: `docker/`
- Documentation: `docs/`
- Database migrations: `migrations/`
### Code Style Conformance
Always conform new and refactored code to the existing coding style in the project:
- Follow established patterns in similar files
- Match indentation and formatting of surrounding code
- Use consistent naming conventions (snake_case for Python, camelCase for TypeScript)
- Maintain the same level of verbosity in comments and docstrings
## Additional Resources
- Documentation: https://docs.frigate.video
- Main Repository: https://github.com/blakeblackshear/frigate
- Home Assistant Integration: https://github.com/blakeblackshear/frigate-hass-integration

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@@ -167,7 +167,7 @@ Inference speeds vary greatly depending on the CPU or GPU used, some known examp
| Intel N100 | ~ 15 ms | s-320: 30 ms | 320: ~ 25 ms | | Can only run one detector instance |
| Intel N150 | ~ 15 ms | t-320: 16 ms s-320: 24 ms | | | |
| Intel Iris XE | ~ 10 ms | t-320: 6 ms t-640: 14 ms s-320: 8 ms s-640: 16 ms | 320: ~ 10 ms 640: ~ 20 ms | 320-n: 33 ms | |
| Intel NPU | ~ 6 ms | s-320: 11 ms | 320: ~ 14 ms 640: ~ 34 ms | 320-n: 40 ms | |
| Intel NPU | ~ 6 ms | s-320: 11 ms s-640: 30 ms | 320: ~ 14 ms 640: ~ 34 ms | 320-n: 40 ms | |
| Intel Arc A310 | ~ 5 ms | t-320: 7 ms t-640: 11 ms s-320: 8 ms s-640: 15 ms | 320: ~ 8 ms 640: ~ 14 ms | | |
| Intel Arc A380 | ~ 6 ms | | 320: ~ 10 ms 640: ~ 22 ms | 336: 20 ms 448: 27 ms | |
| Intel Arc A750 | ~ 4 ms | | 320: ~ 8 ms | | |

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@@ -173,9 +173,9 @@ function getVerifiedIcon(
const simpleLabel = label.substring(0, label.lastIndexOf("-"));
return (
<div key={label} className="flex items-center">
<div key={label} className="relative flex items-center">
{getIconForLabel(simpleLabel, type, className)}
<FaCheckCircle className="absolute size-2 translate-x-[80%] translate-y-3/4" />
<FaCheckCircle className="absolute -bottom-0.5 -right-0.5 size-2" />
</div>
);
}
@@ -188,9 +188,9 @@ function getRecognizedPlateIcon(
const simpleLabel = label.substring(0, label.lastIndexOf("-"));
return (
<div key={label} className="flex items-center">
<div key={label} className="relative inline-flex items-center">
{getIconForLabel(simpleLabel, type, className)}
<LuScanBarcode className="absolute size-2.5 translate-x-[50%] translate-y-3/4" />
<LuScanBarcode className="absolute -bottom-0.5 -right-0.5 size-2" />
</div>
);
}

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@@ -391,7 +391,7 @@ function ObjectList({ cameraConfig, objects }: ObjectListProps) {
);
return (
<div className="scrollbar-container flex w-full flex-col overflow-y-auto">
<div className="scrollbar-container relative flex w-full flex-col overflow-y-auto">
{objects && objects.length > 0 ? (
objects.map((obj: ObjectType) => {
return (