FROM python:3.10-slim

# Set working directory
WORKDIR /app

# Install system dependencies for audio processing
RUN apt-get update && apt-get install -y \
    gcc \
    g++ \
    portaudio19-dev \
    python3-dev \
    espeak \
    espeak-data \
    libespeak1 \
    libespeak-dev \
    alsa-utils \
    curl \
    && rm -rf /var/lib/apt/lists/*

# Copy requirements first for better Docker layer caching
COPY requirements.txt .

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

# Copy application code
COPY . .

# Create necessary directories
RUN mkdir -p /tmp/audio_cache && \
    chmod 755 /tmp/audio_cache

# Set environment variables
ENV PYTHONPATH=/app
ENV GRADIO_SERVER_NAME=0.0.0.0
ENV GRADIO_SERVER_PORT=7860
ENV PYTHONUNBUFFERED=1

# Expose port
EXPOSE 7860

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

# Run the application
CMD ["python", "app.py"]