# Stage 1: Build React frontend
FROM node:20-alpine AS frontend-builder
WORKDIR /app/frontend

# Set npm config for better performance
RUN npm config set registry https://registry.npmjs.org/
RUN npm config set fetch-timeout 300000
RUN npm config set fetch-retry-mintimeout 20000
RUN npm config set fetch-retry-maxtimeout 120000

# Copy package files first for better caching
COPY frontend/package*.json ./

# Install dependencies with specific flags for speed
RUN npm ci --no-audit --no-fund --prefer-offline

# Copy source code
COPY frontend/ .

# Build the application
RUN npm run build

# Stage 2: Setup Node.js backend and serve everything
FROM node:20-alpine
WORKDIR /app

# Set npm config for better performance
RUN npm config set registry https://registry.npmjs.org/
RUN npm config set fetch-timeout 300000

# Copy package files first for better caching
COPY backend/package*.json ./

# Install production dependencies only
RUN npm ci --only=production --no-audit --no-fund --prefer-offline

# Copy backend source code
COPY backend/ .

# Copy built frontend assets from the previous stage
COPY --from=frontend-builder /app/frontend/dist ./public

# The port the backend runs on
EXPOSE 3001

# Start the server
CMD ["node", "server.js"]