# syntax=docker/dockerfile:1.7-labs
# Ultra-optimized Dockerfile for maximum build speed on multi-core systems

# ==============================================================================
# STAGE 1: Base system with parallel dependency installation
# ==============================================================================
FROM node:20-slim AS base
SHELL ["/bin/bash", "-c"]

# Enable parallel processing
ENV NPM_CONFIG_JOBS=max
ENV NPM_CONFIG_MAXSOCKETS=50
ENV NPM_CONFIG_CACHE=/tmp/.npm

# Create app directory and user in parallel
RUN mkdir -p /app /tmp/.npm && \
    groupadd --gid 1000 node && \
    useradd --uid 1000 --gid node --shell /bin/bash --create-home node

WORKDIR /app

# ==============================================================================
# STAGE 2: System dependencies (parallelized)
# ==============================================================================
FROM base AS system-deps

# Install system dependencies with maximum parallelization
RUN --mount=type=cache,target=/var/cache/apt,sharing=locked \
    --mount=type=cache,target=/var/lib/apt/lists,sharing=locked \
    apt-get update && \
    apt-get install -y --no-install-recommends \
        # Core system tools
        wget ca-certificates curl gnupg \
        # Chromium dependencies (parallel install)
        chromium \
        fonts-liberation libappindicator3-1 libasound2 \
        libatk-bridge2.0-0 libatk1.0-0 libcups2 libdbus-1-3 \
        libdrm2 libgbm1 libnspr4 libnss3 libx11-xcb1 \
        libxcomposite1 libxdamage1 libxrandr2 xdg-utils \
        libxss1 libgconf-2-4 libxtst6 libasound2 \
        libpangocairo-1.0-0 libgdk-pixbuf2.0-0 libgtk-3-0 \
        libxshmfence1 && \
    # Cleanup in same layer
    apt-get clean && \
    rm -rf /var/lib/apt/lists/*

# ==============================================================================
# STAGE 3: Node.js dependencies (heavily optimized)
# ==============================================================================
FROM system-deps AS node-deps

# Install pnpm for faster package management
RUN --mount=type=cache,target=/tmp/.npm \
    npm install -g pnpm@latest

# Copy dependency files
COPY --chown=node:node package.json pnpm-lock.yaml* package-lock.json* yarn.lock* .npmrc* ./

# Install dependencies with maximum parallelization
RUN --mount=type=cache,target=/root/.pnpm-store \
    --mount=type=cache,target=/tmp/.npm \
    # Use pnpm with parallel fetching
    if [ -f pnpm-lock.yaml ]; then \
        PNPM_STORE_DIR=/root/.pnpm-store pnpm install --frozen-lockfile --prefer-offline; \
    elif [ -f package-lock.json ]; then \
        npm ci --prefer-offline --no-audit --no-fund --maxsockets 50; \
    else \
        npm install --prefer-offline --no-audit --no-fund --maxsockets 50; \
    fi

# ==============================================================================
# STAGE 4: Playwright setup (parallel browser installation)
# ==============================================================================
FROM node-deps AS browser-deps

# Install Playwright with parallel browser downloads
ENV PLAYWRIGHT_BROWSERS_PATH=/ms-playwright
ENV PLAYWRIGHT_SKIP_VALIDATE_HOST_REQUIREMENTS=true

RUN --mount=type=cache,target=/ms-playwright \
    npx playwright install chromium --with-deps && \
    # Parallel browser validation
    npx playwright install-deps chromium &

# ==============================================================================
# STAGE 5: Application build (parallelized)
# ==============================================================================
FROM browser-deps AS builder

# Copy source code
COPY --chown=node:node . .

# Generate Prisma client in parallel with Next.js build
RUN --mount=type=cache,target=/app/.next/cache \
    --mount=type=cache,target=/tmp/.npm \
    # Run Prisma generation and Next.js build in parallel
    npx prisma generate & \
    NEXT_BUILD_ID="docker-$(date +%s)" npm run build && \
    wait

# ==============================================================================
# STAGE 6: Production runtime (minimal)
# ==============================================================================
FROM system-deps AS runner

# Copy only necessary files from previous stages
COPY --from=builder --chown=node:node /app/package.json ./
COPY --from=builder --chown=node:node /app/.next/standalone ./
COPY --from=builder --chown=node:node /app/.next/static ./.next/static
COPY --from=builder --chown=node:node /app/public ./public
COPY --from=builder --chown=node:node /app/prisma ./prisma
COPY --from=builder --chown=node:node /app/node_modules ./node_modules
COPY --from=browser-deps --chown=node:node /ms-playwright /ms-playwright

# Set environment variables for production
ENV NODE_ENV=production
ENV NEXT_TELEMETRY_DISABLED=1
ENV PLAYWRIGHT_BROWSERS_PATH=/ms-playwright
ENV PUPPETEER_SKIP_CHROMIUM_DOWNLOAD=true
ENV PUPPETEER_EXECUTABLE_PATH=/usr/bin/chromium
ENV PORT=3000

# Create necessary directories
RUN mkdir -p /app/screenshots /app/videos && \
    chown -R node:node /app

# Switch to non-root user
USER node

# Health check
HEALTHCHECK --interval=30s --timeout=10s --start-period=60s --retries=3 \
    CMD curl -f http://localhost:3000/api/health || exit 1

EXPOSE 3000

# Start with optimized Node.js flags
CMD ["node", "--max-old-space-size=2048", "--enable-source-maps", "server.js"]