FROM python:3.11-slim

ENV PYTHONUNBUFFERED=1 \
    PYTHONDONTWRITEBYTECODE=1 \
    PORT=7860 \
    FRONTEND_DIST=/home/user/app/static \
    PLAYWRIGHT_BROWSERS_PATH=/ms-playwright

WORKDIR /app

RUN apt-get update && apt-get install -y --no-install-recommends \
    build-essential curl git nodejs npm \
    libnss3 libnspr4 libdbus-1-3 libatk1.0-0 libatk-bridge2.0-0 \
    libcups2 libdrm2 libxkbcommon0 libxcomposite1 libxdamage1 \
    libxfixes3 libxrandr2 libgbm1 libasound2 \
    && rm -rf /var/lib/apt/lists/*

# hf-sync copia backend/* nella root dello Space — nessun prefisso backend/
COPY requirements.txt /app/requirements.txt
RUN pip install --no-cache-dir -r /app/requirements.txt \
    && playwright install chromium \
    && chmod -R 755 /ms-playwright

# S356: ttyd — terminale web per accesso da iPhone Safari (binario statico, zero dep)
ARG TTYD_VERSION=1.7.7
RUN ARCH=$(uname -m) && \
    TTYD_ARCH=$([ "$ARCH" = "aarch64" ] && echo "aarch64" || echo "x86_64") && \
    curl -fsSL -o /usr/local/bin/ttyd \
      "https://github.com/tsl0922/ttyd/releases/download/${TTYD_VERSION}/ttyd.${TTYD_ARCH}" && \
    chmod +x /usr/local/bin/ttyd

RUN useradd -m -u 1000 user
USER user
ENV HOME=/home/user PATH=/home/user/.local/bin:$PATH

WORKDIR /home/user/app
COPY --chown=user . /home/user/app/

EXPOSE 7860

CMD ["sh", "-c", "uvicorn main:app --host 0.0.0.0 --port ${PORT:-7860} --workers 1"]