# ============================================
# AudioForge Frontend - Production Dockerfile
# ============================================
# Multi-stage build with optimized caching
# Production-ready Next.js deployment

FROM node:20-alpine AS base

# Install security updates
RUN apk upgrade --no-cache && \
    apk add --no-cache libc6-compat curl

# ============================================
# Dependencies Stage
# ============================================
FROM base AS deps

WORKDIR /app

# Enable pnpm
RUN corepack enable && corepack prepare pnpm@9.1.0 --activate

# Copy dependency files
COPY package.json pnpm-lock.yaml* ./

# Install dependencies (allow lockfile update for flexibility)
RUN pnpm install --no-frozen-lockfile --prod=false

# ============================================
# Builder Stage
# ============================================
FROM base AS builder

WORKDIR /app

# Copy dependency files first for better caching
COPY package.json package-lock.json* ./

# Install ALL dependencies
RUN npm install

# Copy source code
COPY . .

# Remove test files and vitest config to avoid build conflicts
RUN rm -rf src/**/*.test.ts src/**/*.test.tsx src/test vitest.config.ts

# Set build environment variables
ENV NEXT_TELEMETRY_DISABLED=1 \
    NODE_ENV=production

# Build application
RUN npm run build

# ============================================
# Production Runner Stage
# ============================================
FROM base AS runner

WORKDIR /app

# Set production environment
ENV NODE_ENV=production \
    NEXT_TELEMETRY_DISABLED=1 \
    PORT=3000 \
    HOSTNAME="0.0.0.0"

# Create system user for security
RUN addgroup --system --gid 1001 nodejs && \
    adduser --system --uid 1001 nextjs

# Copy built application
COPY --from=builder /app/public ./public
COPY --from=builder --chown=nextjs:nodejs /app/.next/standalone ./
COPY --from=builder --chown=nextjs:nodejs /app/.next/static ./.next/static

# Switch to non-root user
USER nextjs

# Health check
HEALTHCHECK --interval=30s --timeout=10s --start-period=40s --retries=3 \
    CMD curl -f http://localhost:3000/ || exit 1

# Expose port
EXPOSE 3000

# Labels for metadata
LABEL maintainer="AudioForge Team" \
      version="1.0.0" \
      description="AudioForge Frontend - Production Ready" \
      org.opencontainers.image.source="https://github.com/audioforge/audioforge"

# Start application
CMD ["node", "server.js"]