# Dockerfile for LocalGreenChain
# Multi-stage production build with Bun runtime
# Agent 4: Production Deployment

# =============================================================================
# Stage 1: Dependencies
# =============================================================================
FROM oven/bun:1 AS deps

WORKDIR /app

# Install dependencies only (better caching)
COPY package.json bun.lockb* ./
RUN bun install --frozen-lockfile --production=false

# =============================================================================
# Stage 2: Builder
# =============================================================================
FROM oven/bun:1 AS builder

WORKDIR /app

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

# Build arguments for build-time configuration
ARG NEXT_PUBLIC_API_URL
ARG NEXT_PUBLIC_SENTRY_DSN
ENV NEXT_PUBLIC_API_URL=$NEXT_PUBLIC_API_URL
ENV NEXT_PUBLIC_SENTRY_DSN=$NEXT_PUBLIC_SENTRY_DSN

# Disable Next.js telemetry during build
ENV NEXT_TELEMETRY_DISABLED=1

# Build Next.js application
RUN bun run build

# Remove development dependencies
RUN bun install --frozen-lockfile --production

# =============================================================================
# Stage 3: Production Runner
# =============================================================================
FROM oven/bun:1-slim AS production

WORKDIR /app

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

# Copy necessary files from builder
COPY --from=builder /app/public ./public
COPY --from=builder /app/package.json ./package.json
COPY --from=builder /app/next.config.js ./next.config.js

# Copy Next.js build output with proper ownership
COPY --from=builder --chown=nextjs:nodejs /app/.next/standalone ./
COPY --from=builder --chown=nextjs:nodejs /app/.next/static ./.next/static

# Create data directory with proper permissions
RUN mkdir -p /app/data && chown -R nextjs:nodejs /app/data

# Set production environment
ENV NODE_ENV=production
ENV NEXT_TELEMETRY_DISABLED=1
ENV PORT=3001
ENV HOSTNAME="0.0.0.0"

# Expose port
EXPOSE 3001

# Health check
HEALTHCHECK --interval=30s --timeout=10s --start-period=5s --retries=3 \
    CMD curl -f http://localhost:3001/api/health || exit 1

# Switch to non-root user
USER nextjs

# Run the application
CMD ["bun", "run", "start"]