FROM python:3.10-slim

RUN apt-get update && apt-get install -y \
    libsndfile1 \
    ffmpeg \
    sox \
    curl \
    git-lfs \
    pkg-config \
    libfreetype6-dev \
    libpng-dev \
    build-essential \
    && rm -rf /var/lib/apt/lists/*

RUN useradd -m appuser

RUN mkdir -p \
    /tmp/matplotlib \
    /tmp/fontconfig \
    /tmp/lhotse \
    /app/uploads \
    /app/processed_audio \
    /app/assets \
    /app/temp_files \
    /app/static/outputs && \
    chown -R appuser:appuser /app /tmp/matplotlib /tmp/fontconfig /tmp/lhotse

WORKDIR /app

ENV MPLCONFIGDIR=/tmp/matplotlib \
    FONTCONFIG_PATH=/tmp/fontconfig \
    LHOTSE_CACHE_DIR=/tmp/lhotse \
    HF_HUB_ENABLE_HF_TRANSFER=1 \
    PYTHONUNBUFFERED=1 

# --- OPTIMIZATION: Copy ONLY requirements first to leverage Docker caching ---
COPY --chown=appuser:appuser requirements.txt .

USER appuser

# 7. Install Python dependencies as non-root user
USER appuser
RUN pip install --upgrade pip && \
    pip install Cython==0.29.36 && \
    pip install --no-build-isolation youtokentome==1.0.6 && \
    pip install --no-cache-dir --prefer-binary -r requirements.txt && \
    python -m spacy download en_core_web_sm
# --- OPTIMIZATION: Copy the rest of the code AFTER dependencies are installed ---
COPY --chown=appuser:appuser . .

HEALTHCHECK --interval=30s --timeout=10s \
    CMD curl -f http://localhost:7860/health || exit 1

CMD ["python", "-m", "uvicorn", "app:app", "--host", "0.0.0.0", "--port", "7860"]