FROM python:3.10-slim

WORKDIR /app

# System dependencies
RUN apt-get update && apt-get install -y \
    ffmpeg \
    libsndfile1 \
    git \
    && rm -rf /var/lib/apt/lists/*

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

# Create user (USER ID 1000 is REQUIRED by Hugging Face!)
RUN useradd -m -u 1000 user

# Create output and cache directories with proper permissions
RUN mkdir -p /data/output/one_audio && \
    mkdir -p /data/hf_cache && \
    mkdir -p /data/download && \
    chown -R user:user /data

# Copy application files
COPY app.py .
COPY README.md .

# Switch to user (REQUIRED!)
USER user

# Environment variables
ENV PYTHONUNBUFFERED=1 \
    PYTHONIOENCODING=UTF-8 \
    HF_TOKEN=${HF_TOKEN} \
    DATASET_ID=ayf3/numberblocks-audio \
    HOME=/home/user

# Expose port for Hugging Face
EXPOSE 7860

# Health check
HEALTHCHECK --interval=30s --timeout=10s --start-period=5s --retries=3 \
    CMD python -c "import urllib.request; urllib.request.urlopen('http://localhost:7860/health')"

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