# PotholeIQ — Node backend + Python YOLO classifier + Chromium PDF rendering.
# Built for HuggingFace Spaces (Docker SDK, app_port 7860) but runs anywhere.
FROM node:20-slim

# System deps:
#  - python3 + pip        -> YOLOv8 classifier (ai/pothole_server.py) + docx generation
#  - chromium             -> before/after PDF rendering (htmlToPdf)
#  - libgl1 / libglib2.0  -> OpenCV runtime used by ultralytics
#  - fonts-liberation     -> readable PDF text
RUN apt-get update && apt-get install -y --no-install-recommends \
      python3 python3-pip \
      chromium fonts-liberation \
      wkhtmltopdf xvfb \
      libgl1 libglib2.0-0 \
  && rm -rf /var/lib/apt/lists/*

# Python deps. CPU-only torch first (much smaller than the default CUDA build).
COPY requirements.txt /tmp/requirements.txt
RUN pip3 install --no-cache-dir --break-system-packages \
      torch torchvision --index-url https://download.pytorch.org/whl/cpu \
  && pip3 install --no-cache-dir --break-system-packages -r /tmp/requirements.txt

WORKDIR /app

# Node deps (cached layer)
COPY package.json package-lock.json ./
RUN npm ci --omit=dev

# App code (see .dockerignore for exclusions — no secrets, no local data)
COPY . .

# Runtime env. PORT 7860 is what HuggingFace Spaces routes to.
ENV PORT=7860 \
    HOST=0.0.0.0 \
    PYTHON_BIN=python3 \
    CHROME_PATH=/usr/bin/chromium \
    YOLO_CONFIG_DIR=/tmp/ultralytics

# HF Spaces runs the container as an arbitrary non-root user; make the app dir
# writable for the ephemeral data store (data/cases.json etc.).
RUN mkdir -p /app/data && chmod -R 777 /app/data && chmod 1777 /tmp

EXPOSE 7860
CMD ["node", "server.js"]