FROM node:20-alpine AS builder

WORKDIR /app/client

# Install client dependencies and build
COPY client/package*.json ./
RUN npm install

COPY client/ ./
RUN npm run build

# --- Production stage ---
FROM node:20-alpine

ARG SOURCE_COMMIT=unknown
ARG APP_VERSION=1.0.0

WORKDIR /app

RUN apk add --no-cache curl

# Install server dependencies
COPY package*.json ./
RUN npm install --production

# Copy server code
COPY server.js ./

# Copy built React app from builder
COPY --from=builder /app/client/dist ./client/dist

ENV GIT_COMMIT=${SOURCE_COMMIT} \
    APP_VERSION=${APP_VERSION}

EXPOSE 3000

HEALTHCHECK --interval=10s --timeout=3s --start-period=5s --retries=2 \
  CMD curl -f http://localhost:3000/health || exit 1

CMD ["node", "server.js"]