# Use Python 3.10-slim as base image
FROM python:3.10-slim

# Install system dependencies for OpenCV, FFmpeg, and debugging
RUN apt-get update && apt-get install -y \
    libgl1-mesa-glx \
    libglib2.0-0 \
    ffmpeg \
    curl \
    && rm -rf /var/lib/apt/lists/*

# Create a non-root user and set up directories
RUN useradd -m -u 1000 appuser && \
    mkdir -p /tmp/Ultralytics /snapshots /app && \
    chown -R appuser:appuser /tmp/Ultralytics /snapshots /app && \
    chmod -R 777 /tmp/Ultralytics /snapshots /app

# Set environment variables early
ENV YOLO_CONFIG_DIR=/tmp/Ultralytics
ENV PYTHONUNBUFFERED=1
ENV PYTHONPATH=/app

# Set working directory
WORKDIR /app

# Install Python dependencies
COPY requirements.txt .
RUN pip install --no-cache-dir -r requirements.txt

# Download YOLOv8n model weights if not present in project directory
RUN curl -L -o yolov8n.pt https://github.com/ultralytics/assets/releases/download/v0.0.0/yolov8n.pt && \
    chown appuser:appuser yolov8n.pt && \
    chmod 644 yolov8n.pt

# Copy application code
COPY . .

# Switch to non-root user
USER appuser

# Expose port 8000 for FastAPI
EXPOSE 8000

# Run FastAPI app with uvicorn
CMD ["uvicorn", "app:app", "--host", "0.0.0.0", "--port", "8000"]