# Production Dockerfile for Marine Pollution Detection API
# Optimized for deployment with only necessary files included

FROM python:3.11-slim

# Set working directory
WORKDIR /app

# Set environment variables
ENV PYTHONDONTWRITEBYTECODE=1
ENV PYTHONUNBUFFERED=1
ENV PORT=7860

# Create a non-root user for security
RUN useradd --create-home --shell /bin/bash app

# Install system dependencies
RUN apt-get update && apt-get install -y \
    build-essential \
    curl \
    && rm -rf /var/lib/apt/lists/*

# Copy only the requirements file first for better caching
COPY requirements.txt .

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

# Copy only the necessary application files (explicitly excluding test files)
COPY app/ /app/app/
COPY models/ /app/models/
COPY start-hf.sh /app/
COPY Procfile /app/
COPY Procfile.railway /app/

# Create necessary directories with proper permissions
RUN mkdir -p app/uploads /tmp/uploads && \
    chown -R app:app /app /tmp/uploads && \
    chmod -R 755 /app /tmp/uploads

# Make startup script executable
RUN chmod +x start-hf.sh && chown app:app start-hf.sh

# Switch to non-root user
USER app

# Expose port 7860 (Hugging Face Spaces default)
EXPOSE 7860

# Health check
HEALTHCHECK --interval=30s --timeout=10s --start-period=5s --retries=3 \
    CMD curl -f http://localhost:7860/health || exit 1

# Command to run the application
CMD ["./start-hf.sh"]