# Stage 1: Build the application
FROM node:20-alpine AS builder

WORKDIR /app

# Copy package files
COPY package.json ./

# Install dependencies with npm
RUN npm install

# Copy entire project
COPY . .

# Build the application for production
RUN npm run build

# Stage 2: Runtime
FROM node:20-alpine

WORKDIR /app

# Copy built files from builder
COPY --from=builder /app/dist ./dist
COPY --from=builder /app/node_modules ./node_modules
COPY --from=builder /app/package.json ./package.json

# Copy server script (ES module)
COPY server.js .
COPY --from=builder /app/server/aiCore.js ./server/aiCore.js

# Expose port 7860 (HuggingFace standard)
EXPOSE 7860

# Set environment variables for HuggingFace Spaces
ENV NODE_ENV=production
ENV PORT=7860
ENV HOST=0.0.0.0

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