# Multi-stage Dockerfile for Attune Web UI
# Builds the React app and serves it with Nginx

ARG NODE_VERSION=20
ARG NGINX_VERSION=1.25-alpine

# ============================================================================
# Stage 1: Builder - Build the React application
# ============================================================================
FROM node:${NODE_VERSION}-alpine AS builder

WORKDIR /build

# Copy package files
COPY web/package.json web/package-lock.json ./

# Install dependencies
RUN npm ci --no-audit --prefer-offline

# Copy source code
COPY web/ ./

# Build the application
RUN npm run build

# ============================================================================
# Stage 2: Runtime - Serve with Nginx
# ============================================================================
FROM nginx:${NGINX_VERSION} AS runtime

# Remove default nginx config
RUN rm /etc/nginx/conf.d/default.conf

# Copy custom nginx configuration
COPY docker/nginx.conf /etc/nginx/conf.d/attune.conf

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

# Copy environment variable injection script
COPY docker/inject-env.sh /docker-entrypoint.d/40-inject-env.sh
RUN chmod +x /docker-entrypoint.d/40-inject-env.sh

# Create config directory for runtime config
RUN mkdir -p /usr/share/nginx/html/config

# Expose port 80
EXPOSE 80

# Health check
HEALTHCHECK --interval=30s --timeout=3s --start-period=5s --retries=3 \
    CMD wget --no-verbose --tries=1 --spider http://localhost/health || exit 1

# Nginx will start automatically via the base image entrypoint