# ============================================
# Stage 1: Dependencies Installation
# ============================================
FROM node:20-alpine AS deps
WORKDIR /app

# Install libc6-compat for compatibility
RUN apk add --no-cache libc6-compat

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

# Install dependencies with legacy peer deps flag for Next.js 16
RUN npm ci --legacy-peer-deps

# ============================================
# Stage 2: Build Stage
# ============================================
FROM node:20-alpine AS builder
WORKDIR /app

# Copy dependencies from deps stage
COPY --from=deps /app/node_modules ./node_modules

# Copy all source files
COPY . .

# Disable Next.js telemetry
ENV NEXT_TELEMETRY_DISABLED=1

# Build the application
RUN npm run build

# ============================================
# Stage 3: Development Environment (Default)
# ============================================
FROM node:20-alpine AS development
WORKDIR /app

# Set environment variables
ENV NODE_ENV=development
ENV NEXT_TELEMETRY_DISABLED=1

# Install libc6-compat for compatibility
RUN apk add --no-cache libc6-compat curl

# Copy dependencies from deps stage
COPY --from=deps /app/node_modules ./node_modules

# Copy source code (will be overridden by volume mount in docker-compose)
COPY . .

# Expose Next.js default port
EXPOSE 3000

# Use turbo mode for faster development
CMD ["npm", "run", "dev"]

# ============================================
# Stage 4: Production Environment
# ============================================
FROM node:20-alpine AS production
WORKDIR /app

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

# Install libc6-compat
RUN apk add --no-cache libc6-compat

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

# Copy build artifacts from builder stage
COPY --from=builder --chown=nextjs:nodejs /app/.next/standalone ./
COPY --from=builder --chown=nextjs:nodejs /app/.next/static ./.next/static
COPY --from=builder --chown=nextjs:nodejs /app/public ./public

# Switch to non-privileged user
USER nextjs

# Expose port
EXPOSE 3000

# Start the standalone server
CMD ["node", "server.js"]