# Use a slim Python base image
FROM python:3.9-slim

# Install system dependencies for audio and model support
RUN apt-get update && \
    apt-get install -y --no-install-recommends \
        build-essential \
        gcc \
        git \
        ffmpeg \
        libsndfile1 \
        libgomp1 \
        curl && \
    rm -rf /var/lib/apt/lists/*

# Environment variables for better performance & Hugging Face cache
ENV PYTHONDONTWRITEBYTECODE=1 \
    PYTHONUNBUFFERED=1 \
    HF_HOME=/tmp/huggingface \
    TRANSFORMERS_CACHE=/tmp/huggingface/transformers \
    HF_HUB_CACHE=/tmp/huggingface/hub \
    HF_DATASETS_CACHE=/tmp/huggingface/datasets \
    XDG_CACHE_HOME=/tmp/huggingface

WORKDIR /app

# Copy and install dependencies
COPY requirements.txt /app/requirements.txt
RUN pip install --no-cache-dir --upgrade pip && \
    pip install --no-cache-dir -r /app/requirements.txt

# Create non-root user
RUN useradd -m -u 1000 user
USER user
ENV PATH="/home/user/.local/bin:$PATH"

# Copy code
COPY --chown=user:root . /app

# Expose Hugging Face port
EXPOSE 7860

# Run the app
CMD ["uvicorn", "main:app", "--host", "0.0.0.0", "--port", "7860", "--workers", "1", "--timeout-keep-alive", "120"]