# ── Estágio 1: base ─────────────────────────────────────────────────
FROM python:3.12-slim AS base

WORKDIR /app

ENV PYTHONUNBUFFERED=1 \
    PYTHONDONTWRITEBYTECODE=1 \
    PIP_NO_CACHE_DIR=1

# Pillow wheel manylinux já inclui as libs necessárias (libjpeg, zlib, etc).
# Nenhum pacote do sistema é necessário para pypdf + Pillow + Streamlit.

COPY requirements.txt .
RUN pip install --no-cache-dir -r requirements.txt

# ── Estágio 2: API ──────────────────────────────────────────────────
FROM base AS api

COPY . .

EXPOSE 8555

HEALTHCHECK --interval=30s --timeout=5s --start-period=10s --retries=3 \
    CMD python -c "import http.client; conn=http.client.HTTPConnection('localhost:8555'); conn.request('GET','/health'); r=conn.getresponse(); exit(0 if r.status==200 else 1)"

CMD ["uvicorn", "api:app", "--host", "0.0.0.0", "--port", "8555"]

# ── Estágio 3: Streamlit Web ────────────────────────────────────────
FROM base AS web

COPY . .

EXPOSE 8550

HEALTHCHECK --interval=30s --timeout=5s --start-period=10s --retries=3 \
    CMD python -c "import http.client; conn=http.client.HTTPConnection('localhost:8550'); conn.request('GET','/'); r=conn.getresponse(); exit(0 if r.status==200 else 1)"

CMD ["streamlit", "run", "app.py", "--server.port", "8550", "--server.address", "0.0.0.0", "--server.headless", "true"]