# ── Base ───────────────────────────────────────────────────────────────────────
FROM python:3.11-slim

# ── System dependencies ────────────────────────────────────────────────────────
RUN apt-get update && apt-get install -y --no-install-recommends \
    gcc \
    libxml2-dev \
    libxslt-dev \
    zlib1g-dev \
    curl \
    && rm -rf /var/lib/apt/lists/*

# ── Create a non-root user (Required for Hugging Face Spaces) ──────────────────
RUN useradd -m -u 1000 user
USER user

# ── Setup environment ──────────────────────────────────────────────────────────
ENV HOME=/home/user \
    PATH=/home/user/.local/bin:$PATH

# Set the working directory to the user's home directory
WORKDIR $HOME/app

# ── Install Python dependencies ────────────────────────────────────────────────
# Copy requirements first to leverage Docker cache
COPY --chown=user web_app/requirements.txt ./requirements.txt
RUN pip install --no-cache-dir -r requirements.txt

# ── Copy full application source ───────────────────────────────────────────────
COPY --chown=user . $HOME/app

# ── Create writable directories ────────────────────────────────────────────────
RUN mkdir -p outputs storage web_app/__pycache__

# ── Streamlit config — disable telemetry, set port ────────────────────────────
RUN mkdir -p $HOME/.streamlit \
    && cp web_app/streamlit_config.toml $HOME/.streamlit/config.toml

# ── HF Spaces: port 7860 ──────────────────────────────────────────────────────
EXPOSE 7860

# ── Launch Streamlit ───────────────────────────────────────────────────────────
CMD ["streamlit", "run", "web_app/app.py", \
     "--server.port=7860", \
     "--server.address=0.0.0.0", \
     "--server.headless=true", \
     "--browser.gatherUsageStats=false"]