# ── Stage 1: Build React frontend ─────────────────────────────────────────
FROM node:20-alpine AS frontend-builder

WORKDIR /app
COPY frontend/package*.json ./
RUN npm ci
COPY frontend/ .
RUN npm run build

# ── Stage 2: Single runtime image ─────────────────────────────────────────
FROM python:3.11-slim

ENV PYTHONUNBUFFERED=1 \
    PYTHONDONTWRITEBYTECODE=1 \
    PIP_NO_CACHE_DIR=1

# Install nginx, supervisor, and gcc (for some pip packages)
RUN apt-get update && apt-get install -y --no-install-recommends \
    nginx \
    supervisor \
    gcc \
    && rm -rf /var/lib/apt/lists/*

WORKDIR /app

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

# Backend source
COPY api_server.py airports.py cache.py ./
COPY database/ ./database/

# Frontend build output
COPY --from=frontend-builder /app/dist /usr/share/nginx/html

# Config files
COPY nginx.conf /etc/nginx/conf.d/default.conf
COPY supervisord.conf /etc/supervisor/conf.d/app.conf

# Remove the default nginx site
RUN rm -f /etc/nginx/sites-enabled/default

# Pre-fetch airport data and initialise the database at build time
RUN mkdir -p data && \
    python -c "from airports import download_and_build_airport_data; download_and_build_airport_data()" && \
    python database/init_db.py

EXPOSE 80

HEALTHCHECK --interval=30s --timeout=5s --start-period=15s --retries=3 \
    CMD wget -q --spider http://localhost/ || exit 1

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