# Stage 1: Build the Vite SPA
FROM node:20-slim AS builder

WORKDIR /app

# Install pnpm
RUN npm install -g pnpm@10

# Copy package files first for layer caching
COPY package.json pnpm-lock.yaml ./

# Install all dependencies (including devDependencies for build)
RUN pnpm install --frozen-lockfile

# Copy source code
COPY . .

# Build the frontend with the backend URL pointing to localhost:8080
ARG VITE_LANGGRAPH_URL=http://localhost:8080
ENV VITE_LANGGRAPH_URL=${VITE_LANGGRAPH_URL}

RUN pnpm build

# Stage 2: Serve with nginx
FROM nginx:alpine

# Copy built assets
COPY --from=builder /app/dist /usr/share/nginx/html

# Copy nginx config for SPA routing
COPY nginx.frontend.conf /etc/nginx/conf.d/default.conf

EXPOSE 3000

CMD ["nginx", "-g", "daemon off;"]