FROM node:20-alpine as builder

WORKDIR /app

# Copy root package files
COPY package*.json ./
COPY packages/backend/package*.json ./packages/backend/

# Install dependencies
RUN npm install

# Copy source code
COPY packages/backend/ ./packages/backend/

# Build the app
RUN cd packages/backend && npm run build

# Production image
FROM node:20-alpine

WORKDIR /app

# Copy package files
COPY packages/backend/package*.json ./

# Install production dependencies only
RUN npm install --production

# Copy built files from builder stage
COPY --from=builder /app/packages/backend/dist ./dist

# Add health check
HEALTHCHECK --interval=30s --timeout=3s --start-period=5s --retries=3 \
  CMD wget --quiet --tries=1 --spider http://localhost:3000/api/health || exit 1

EXPOSE 3000

CMD ["node", "dist/index.js"]