# ════════════════════════════════════════════════════════════════════════════
# EcomQA — Dockerfile
# Fix #7: Model weights baked in at build time → zero cold-start at runtime
# ════════════════════════════════════════════════════════════════════════════

FROM python:3.11-slim AS base

# System deps for Playwright + PyTorch
RUN apt-get update && apt-get install -y --no-install-recommends \
      gcc g++ libffi-dev curl git \
      # Chromium runtime dependencies
      libnss3 libatk1.0-0 libatk-bridge2.0-0 libcups2 libdrm2 \
      libxkbcommon0 libxcomposite1 libxdamage1 libxfixes3 libxrandr2 \
      libgbm1 libasound2 \
    && rm -rf /var/lib/apt/lists/*

WORKDIR /app

# ── Install Python dependencies ───────────────────────────────────────────────
COPY requirements.txt .
RUN pip install --no-cache-dir -r requirements.txt

# ── Install Playwright browser (baked in) ────────────────────────────────────
RUN playwright install chromium --with-deps

# ── Pre-download all HuggingFace model weights (Fix #7) ──────────────────────
# This runs during image build so the container starts instantly.
COPY scripts/download_models.py scripts/
RUN python scripts/download_models.py --skip-playwright

# ── Copy application source ────────────────────────────────────────────────────
COPY . .

# ── Create data directory for SQLite ─────────────────────────────────────────
RUN mkdir -p data

# ── Environment ───────────────────────────────────────────────────────────────
ENV PYTHONPATH=/app
ENV PYTHONUNBUFFERED=1
ENV TRANSFORMERS_CACHE=/app/.hf_cache
ENV HF_HOME=/app/.hf_cache

EXPOSE 7860

# ── Healthcheck ───────────────────────────────────────────────────────────────
HEALTHCHECK --interval=30s --timeout=10s --start-period=60s \
  CMD curl -f http://localhost:7860/ || exit 1


  
# ── Start ─────────────────────────────────────────────────────────────────────
CMD ["gunicorn", "--bind", "0.0.0.0:7860", "--workers", "1", "--timeout", "300", "src.app:app"]