# syntax=docker/dockerfile:1
# Enable BuildKit features for cache mounts

# Base image for all stages
FROM node:20-alpine AS base

# Install pnpm globally
RUN corepack enable && corepack prepare pnpm@10.19.0 --activate

# Set working directory
WORKDIR /app

# Copy monorepo configuration files
COPY pnpm-workspace.yaml package.json pnpm-lock.yaml ./
COPY turbo.json ./

# ======================
# Dependencies stage
# ======================
FROM base AS deps

# Copy all package.json files for workspace resolution
COPY packages/shared/package.json ./packages/shared/
COPY packages/ui/package.json ./packages/ui/
COPY packages/config/package.json ./packages/config/
COPY apps/web/package.json ./apps/web/

# Install dependencies with pnpm store cache
RUN --mount=type=cache,id=pnpm-store,target=/root/.local/share/pnpm/store \
    pnpm install --frozen-lockfile

# ======================
# Builder stage
# ======================
FROM base AS builder

# Copy dependencies
COPY --from=deps /app/node_modules ./node_modules
COPY --from=deps /app/packages ./packages
COPY --from=deps /app/apps/web/node_modules ./apps/web/node_modules

# Copy all source code
COPY packages ./packages
COPY apps/web ./apps/web

# Build arguments for Next.js
ARG NEXT_PUBLIC_API_URL
ENV NEXT_PUBLIC_API_URL=${NEXT_PUBLIC_API_URL}

# Build the web app and its dependencies using TurboRepo
# This ensures @mosaic/shared and @mosaic/ui are built first
# Cache TurboRepo build outputs for faster subsequent builds
RUN --mount=type=cache,id=turbo-cache,target=/app/.turbo \
    pnpm turbo build --filter=@mosaic/web

# Ensure public directory exists (may be empty)
RUN mkdir -p ./apps/web/public

# ======================
# Production stage
# ======================
FROM node:20-alpine AS production

# Install pnpm (needed for pnpm start command)
RUN corepack enable && corepack prepare pnpm@10.19.0 --activate

# Install dumb-init for proper signal handling
RUN apk add --no-cache dumb-init

# Create non-root user
RUN addgroup -g 1001 -S nodejs && adduser -S nextjs -u 1001

WORKDIR /app

# Copy node_modules from builder (includes all dependencies in pnpm store)
COPY --from=builder --chown=nextjs:nodejs /app/node_modules ./node_modules

# Copy built packages (includes dist/ directories)
COPY --from=builder --chown=nextjs:nodejs /app/packages ./packages

# Copy built web application
COPY --from=builder --chown=nextjs:nodejs /app/apps/web/.next ./apps/web/.next
COPY --from=builder --chown=nextjs:nodejs /app/apps/web/public ./apps/web/public
COPY --from=builder --chown=nextjs:nodejs /app/apps/web/next.config.ts ./apps/web/
COPY --from=builder --chown=nextjs:nodejs /app/apps/web/package.json ./apps/web/

# Set working directory to web app
WORKDIR /app/apps/web

# Switch to non-root user
USER nextjs

# Expose web port
EXPOSE 3000

# Environment variables
ENV NODE_ENV=production
ENV PORT=3000
ENV HOSTNAME="0.0.0.0"

# Health check
HEALTHCHECK --interval=30s --timeout=10s --start-period=40s --retries=3 \
  CMD node -e "require('http').get('http://localhost:3000', (r) => {process.exit(r.statusCode === 200 ? 0 : 1)})"

# Use dumb-init to handle signals properly
ENTRYPOINT ["dumb-init", "--"]

# Start the application
CMD ["pnpm", "start"]