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

# Set working directory
WORKDIR /app

# Install system dependencies
# espeak-ng is required for Kokoro TTS (grapheme-to-phoneme conversion)
RUN apt-get update && \
    apt-get install -y --no-install-recommends \
    espeak-ng \
    && rm -rf /var/lib/apt/lists/*

# Copy requirements file
COPY requirements.txt .

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

# Copy backend code
COPY . .

# Expose port 8000
EXPOSE 8000

# Set environment variables
ENV PORT=8000
ENV LOG_LEVEL=info

# Health check
HEALTHCHECK --interval=30s --timeout=10s --start-period=40s --retries=3 \
    CMD python -c "import urllib.request; urllib.request.urlopen('http://localhost:8000/api/health')"

# Start Uvicorn server
CMD ["uvicorn", "main:app", "--host", "0.0.0.0", "--port", "8000"]