FROM python:3.10-slim

WORKDIR /app

# Set environment variables for cache control
ENV PYTHONDONTWRITEBYTECODE=1
ENV PYTHONUNBUFFERED=1
ENV HF_HOME=/tmp/huggingface
ENV TORCH_HOME=/tmp/torch
ENV COQUI_TOS_AGREED=1
ENV TTS_HOME=/tmp/tts_models

# Create cache directories
RUN mkdir -p /tmp/tts_models /tmp/huggingface /tmp/torch /tmp/voices /tmp/output && \
    chmod 777 /tmp/tts_models /tmp/huggingface /tmp/torch /tmp/voices /tmp/output

# Install only essential packages
RUN apt-get update && apt-get install -y \
    curl \
    ffmpeg \
    libsndfile1 \
    && rm -rf /var/lib/apt/lists/* \
    && apt-get clean

# Copy requirements
COPY requirements.txt .

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

# Copy application code
COPY app.py .

# Create non-root user
RUN useradd -m -u 1000 user
USER user

EXPOSE 7860

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

CMD ["python", "app.py"]