# ============================================================================
# HuggingFace Spaces — FastAPI backend (8000) + Next.js standalone (7860)
# Frontend built inside Docker so source changes always deploy correctly
# ============================================================================
FROM python:3.11-slim

# Install Node.js 18 + supervisor
RUN apt-get update && apt-get install -y --no-install-recommends \
        curl ca-certificates xz-utils supervisor \
    && curl -fsSL "https://nodejs.org/dist/v18.20.4/node-v18.20.4-linux-x64.tar.xz" \
       | tar -xJ -C /usr/local --strip-components=1 \
    && rm -rf /var/lib/apt/lists/*

WORKDIR /app

# ── Python backend ──────────────────────────────────────────────────────────
COPY phase-1-core-infra/backend/requirements.txt ./
RUN pip install --no-cache-dir --upgrade pip \
    && pip install --no-cache-dir -r requirements.txt

COPY phase-1-core-infra/backend/ ./backend/

# ── Next.js frontend — build from source ───────────────────────────────────
COPY phase-1-core-infra/frontend/package.json phase-1-core-infra/frontend/package-lock.json /build/frontend/
RUN cd /build/frontend && npm ci --legacy-peer-deps

COPY phase-1-core-infra/frontend/ /build/frontend/
RUN cd /build/frontend \
    && NEXT_PUBLIC_API_URL=http://localhost:8000 \
       NEXT_TELEMETRY_DISABLED=1 \
       npm run build

# Copy standalone output into /app/frontend
RUN cp -r /build/frontend/.next/standalone/. /app/frontend/ \
    && cp -r /build/frontend/.next/static/. /app/frontend/.next/static/ \
    && rm -rf /build

# ── Runtime setup ───────────────────────────────────────────────────────────
RUN mkdir -p /var/log/supervisor /app/backend/uploads
COPY supervisord.conf /etc/supervisor/conf.d/supervisord.conf
RUN useradd -m -u 1000 appuser \
    && chown -R appuser:appuser /app /var/log/supervisor

EXPOSE 7860

ENV PYTHONUNBUFFERED=1 \
    NODE_ENV=production \
    PORT=7860 \
    HOSTNAME=0.0.0.0 \
    NEXT_PUBLIC_API_URL=http://localhost:8000 \
    NEXT_TELEMETRY_DISABLED=1

HEALTHCHECK --interval=30s --timeout=15s --start-period=120s --retries=3 \
    CMD curl -f http://localhost:7860 || exit 1

CMD ["/usr/bin/supervisord", "-n", "-c", "/etc/supervisor/conf.d/supervisord.conf"]