# =====================================================
# Stage 1: build frontend
# =====================================================
FROM node:20-alpine AS frontend-build

WORKDIR /app/frontend
COPY frontend/package.json frontend/package-lock.json* ./
RUN npm install

COPY frontend/ ./
RUN npm run build

# =====================================================
# Stage 2: build backend
# =====================================================
FROM node:20-alpine AS backend-build

WORKDIR /app/backend
COPY backend/package.json backend/package-lock.json* ./
RUN npm install

COPY backend/ ./
RUN npm run build

# =====================================================
# Stage 3: production image
# =====================================================
FROM node:20-alpine AS runtime

RUN apk add --no-cache nginx supervisor curl

WORKDIR /app

# Backend production deps
COPY backend/package.json backend/package-lock.json* ./backend/
RUN cd backend && npm install --omit=dev

# Built backend
COPY --from=backend-build /app/backend/dist ./backend/dist

# DB migrations
COPY db ./db

# Frontend static
COPY --from=frontend-build /app/frontend/dist /var/www/umbyte

# Nginx config
COPY nginx.conf /etc/nginx/http.d/default.conf

# Supervisor config
COPY supervisord.conf /etc/supervisord.conf

EXPOSE 80

HEALTHCHECK --interval=30s --timeout=5s --start-period=20s \
    CMD curl -f http://localhost/api/health || exit 1

CMD ["supervisord", "-c", "/etc/supervisord.conf"]