# ===========================================
# Web Dockerfile (Next.js)
# ===========================================

# Stage 1: Dependencies
FROM node:20-alpine AS deps

WORKDIR /app

# Copy package files
COPY package*.json ./

# Install dependencies
RUN npm install --legacy-peer-deps

# Stage 2: Build
FROM node:20-alpine AS builder

WORKDIR /app

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

# Accept build arguments
ARG NEXT_PUBLIC_API_URL
ARG NEXT_PUBLIC_GIPHY_API_KEY

# Set environment variables for build (NEXT_PUBLIC_* must be set at build time)
ENV NEXT_TELEMETRY_DISABLED=1
ENV NODE_ENV=production
ENV NEXT_PUBLIC_API_URL=${NEXT_PUBLIC_API_URL}
ENV NEXT_PUBLIC_GIPHY_API_KEY=${NEXT_PUBLIC_GIPHY_API_KEY}

# Build the application
RUN npm run build

# Stage 3: Production
FROM node:20-alpine AS production

WORKDIR /app

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

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

# Copy necessary files from builder
COPY --from=builder /app/public ./public
COPY --from=builder /app/.next/standalone ./
COPY --from=builder /app/.next/static ./.next/static

# Set ownership
RUN chown -R nextjs:nodejs /app

# Switch to non-root user
USER nextjs

# Expose port
EXPOSE 3000

# Health check
HEALTHCHECK --interval=30s --timeout=3s --start-period=5s --retries=3 \
    CMD wget --no-verbose --tries=1 --spider http://localhost:3000 || exit 1

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