FROM rocker/shiny-verse:latest

# Install system dependencies including Python
RUN apt-get update && apt-get install -y \
    python3-full \
    python3-pip \
    python3-venv \
    && rm -rf /var/lib/apt/lists/*

WORKDIR /code

# Install R packages
RUN install2.r --error \
    ggExtra \
    httr \
    jsonlite \
    commonmark \
    glue \
    reticulate

# Create and activate virtual environment
ENV VIRTUAL_ENV=/opt/venv
RUN python3 -m venv $VIRTUAL_ENV
ENV PATH="$VIRTUAL_ENV/bin:$PATH"

# Install Python packages in the virtual environment
RUN pip install --no-cache-dir \
    torch \
    sentence-transformers \
    pandas \
    numpy

# Create directories for model cache and make them writable
RUN mkdir -p /.cache/torch/sentence_transformers \
    && chmod -R 777 /.cache

# Create additional writable directories that sentence-transformers might need
RUN mkdir -p /.cache/huggingface \
    && chmod -R 777 /.cache/huggingface

# Copy your application files
COPY . .

# Make the application directory writable for runtime installations
RUN chmod -R 777 /code

# Enable installation of R packages
RUN chmod -R 777 /usr/local/lib/R/site-library

# Configure R to use the virtual environment's Python
RUN echo "RETICULATE_PYTHON='$VIRTUAL_ENV/bin/python'" >> /usr/local/lib/R/etc/Renviron

CMD ["R", "--quiet", "-e", "shiny::runApp(host='0.0.0.0', port=7860)"]