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

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

# ── Stage 2: Build backend ────────────────────────────────────────────────────
FROM node:20-slim AS backend-builder

RUN apt-get update && apt-get install -y \
    python3 make g++ \
    --no-install-recommends \
    && rm -rf /var/lib/apt/lists/*

WORKDIR /build/backend
COPY backend/package*.json backend/tsconfig.json ./
RUN npm install
COPY backend/src ./src
RUN npm run build && npm prune --production

# ── Stage 3: Runtime ─────────────────────────────────────────────────────────
FROM node:20-slim

RUN apt-get update && apt-get install -y \
    nginx \
    chromium \
    fonts-freefont-ttf \
    supervisor \
    --no-install-recommends \
    && rm -rf /var/lib/apt/lists/*

ENV PUPPETEER_EXECUTABLE_PATH=/usr/bin/chromium
ENV NODE_ENV=production
ENV PORT=3001
ENV DATABASE_PATH=/app/data/tracker.db

WORKDIR /app

# Backend
COPY --from=backend-builder /build/backend/dist      ./backend/dist
COPY --from=backend-builder /build/backend/node_modules ./backend/node_modules
COPY backend/package.json ./backend/

# Frontend → nginx web root
COPY --from=frontend-builder /build/frontend/dist /usr/share/nginx/html

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

# Persistent data volume
VOLUME ["/app/data"]

EXPOSE 8080
CMD ["/usr/bin/supervisord", "-n", "-c", "/etc/supervisor/conf.d/supervisord.conf"]