# ── Dockerfile.base ──────────────────────────────────────────────────────────
# This image contains all the heavy, slow-to-download dependencies.
# Build this once, then your app builds will be near-instant.

FROM node:20

# 1. System Dependencies
RUN apt-get update && apt-get install -y --no-install-recommends \
    python3 \
    python3-pip \
    python3-venv \
    build-essential \
    curl \
    && rm -rf /var/lib/apt/lists/*

WORKDIR /app

# 2. Heavy Python Dependencies
# We install the big ones directly so they stay in this base layer
RUN python3 -m venv /opt/venv
ENV PATH="/opt/venv/bin:$PATH"
RUN pip install --no-cache-dir torch --index-url https://download.pytorch.org/whl/cpu
RUN pip install --no-cache-dir \
    pandas \
    openpyxl \
    playwright \
    azure-ai-inference \
    azure-core \
    google-api-python-client \
    google-auth-oauthlib \
    google-auth-httplib2 \
    google-genai \
    langchain \
    langchain-google-genai \
    python-dotenv \
    langgraph \
    beautifulsoup4 \
    fpdf \
    pydantic

# 3. Playwright Browsers
RUN playwright install --with-deps chromium

# 4. Node Dependencies (Base)
# We copy package.json just to get the node_modules layer started
COPY backend/package*.json ./backend/
RUN cd backend && npm install && npm rebuild sqlite3 --build-from-source