# Stage 1: Build Next.js frontend (standalone mode)
FROM node:20-slim AS frontend-builder
WORKDIR /app
COPY package.json package-lock.json ./
RUN npm ci
COPY . .
RUN npm run build

# Stage 2: Final runtime image
FROM python:3.11-slim

# System dependencies
RUN apt-get update && apt-get install -y \
    curl \
    nodejs \
    npm \
    libgl1 \
    libglib2.0-0 \
    poppler-utils \
    && rm -rf /var/lib/apt/lists/*

WORKDIR /app

# Copy full repo source (backend code, configs, etc.)
COPY . .

# Install Python backend dependencies
WORKDIR /app/backend
RUN pip install --no-cache-dir -r requirements.txt

# Copy Next.js standalone build output
WORKDIR /app
COPY --from=frontend-builder /app/.next/standalone ./
COPY --from=frontend-builder /app/.next/static ./.next/static
COPY --from=frontend-builder /app/public ./public

# HuggingFace Spaces uses port 7860
EXPOSE 7860

# Copy and run entrypoint
COPY docker-entrypoint.sh /docker-entrypoint.sh
RUN chmod +x /docker-entrypoint.sh
CMD ["/docker-entrypoint.sh"]