# Use a slim version of Python runtime as a parent image
FROM python:3.10.13

# Prevent Python from writing .pyc files and buffering stdout/stderr
ENV PYTHONDONTWRITEBYTECODE=1
ENV PYTHONUNBUFFERED=1

# Install necessary system dependencies
RUN apt-get update && apt-get install -y --no-install-recommends \
    ffmpeg \
    libsndfile1 \
    git \
    wget \
    libegl1 \
    libgl1 \
    libgl1-mesa-glx \
    libopengl0 \
    libxcb-cursor0 \
    libxcb-shape0 \
    libxcb-randr0 \
    libxcb-render0 \
    libxcb-render-util0 \
    libxcb-image0 \
    libxcb-keysyms1 \
    libxcb-glx0 \
    libxkbcommon0 \
    libxkbcommon-x11-0 \
    libx11-xcb1 \
    libxrender1 \
    libxfixes3 \
    libxdamage1 \
    libxext6 \
    libsm6 \
    libx11-6 \
    libxft2 \
    libxinerama1 \
    libxrandr2 \
    libxcomposite1 \
    libxcursor1 \
    libxi6 \
    libfontconfig1 \
    libfreetype6 \
    libssl3 \
    libxml2 \
    libxslt1.1 \
    libsqlite3-0 \
    zlib1g \
    libopenjp2-7 \
    libjpeg62-turbo \
    libpng16-16 \
    libtiff-dev \
    libwebp7 \
    poppler-utils \
    libxml2-dev \
    libxslt1-dev \
    libgtk-3-0 \
    libglib2.0-0 \
    libglib2.0-data \
    libice6 \
    && apt-get clean \
    && rm -rf /var/lib/apt/lists/*

# Install Calibre (which includes ebook-convert)
RUN wget -nv -O- https://download.calibre-ebook.com/linux-installer.sh | sh /dev/stdin

# Ensure that ebook-convert is available in PATH
ENV PATH="/root/calibre:${PATH}"

# Set working directory
WORKDIR /app

# Create necessary directories with proper permissions
RUN mkdir -p /app/Working_files/Book \
    /app/Working_files/temp_ebook \
    /app/Working_files/temp \
    /app/Working_files/temp_converted \
    /app/cache/fontconfig \
    && chmod -R 777 /app/Working_files /app/cache

# Set XDG_CACHE_HOME for Fontconfig to resolve cache directory issues
ENV XDG_CACHE_HOME=/app/cache

# Set a writable cache directory for Hugging Face Transformers
ENV HF_HOME=/app/cache
RUN mkdir -p /app/cache && chmod -R 777 /app/cache

# Set a writable cache directory for Numba
ENV NUMBA_CACHE_DIR=/app/cache/numba_cache
RUN mkdir -p /app/cache/numba_cache && chmod -R 777 /app/cache/numba_cache

# Set writable Matplotlib config directory
ENV MPLCONFIGDIR=/app/cache/matplotlib
RUN mkdir -p $MPLCONFIGDIR && chmod -R 777 $MPLCONFIGDIR

# Copy the requirements file
COPY requirements.txt .

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

# Download Gradio's frpc_linux_amd64_v0.3 to resolve share link issue
RUN mkdir -p /usr/local/lib/python3.10/site-packages/gradio && \
    wget -O /usr/local/lib/python3.10/site-packages/gradio/frpc_linux_amd64_v0.3 https://cdn-media.huggingface.co/frpc-gradio-0.3/frpc_linux_amd64 && \
    chmod +x /usr/local/lib/python3.10/site-packages/gradio/frpc_linux_amd64_v0.3

# Download NLTK data
RUN python -m nltk.downloader punkt

# Copy your application files
COPY app.py .

# Set ENTRYPOINT and CMD
ENTRYPOINT ["python", "app.py"]
CMD []