FROM python:3.10-slim

# Set working directory
WORKDIR /app

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

# Upgrade pip and install build tools first
RUN pip install --upgrade pip setuptools wheel

# Create necessary directories
RUN mkdir -p /tmp/gradio_flagged \
    /tmp/matplotlib \
    /tmp/huggingface \
    /tmp/huggingface/transformers \
    /tmp/huggingface/datasets \
    /tmp/huggingface/hub \
    /app/outputs \
    /app/configs \
    /app/scripts \
    /app/examples \
    && chmod -R 777 /tmp

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

# Install Python dependencies with error handling
RUN pip install --no-cache-dir --timeout=1000 -r requirements.txt

# Copy application code
COPY . .

# Set environment variables
ENV PYTHONPATH=/app
ENV PYTHONUNBUFFERED=1
ENV MPLCONFIGDIR=/tmp/matplotlib
ENV GRADIO_ALLOW_FLAGGING=never
ENV HF_HOME=/tmp/huggingface
ENV TRANSFORMERS_CACHE=/tmp/huggingface/transformers
ENV HF_DATASETS_CACHE=/tmp/huggingface/datasets
ENV HUGGINGFACE_HUB_CACHE=/tmp/huggingface/hub

# Expose port
EXPOSE 7860

# Health check
HEALTHCHECK --interval=30s --timeout=10s --start-period=60s --retries=3 \
    CMD curl -f http://localhost:7860/health || exit 1

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