# Development stage - for docker-compose development with hot reload
FROM node:20-alpine AS development
WORKDIR /app

# Install pnpm globally
RUN npm install -g pnpm

# Copy package files for dependency installation
COPY package*.json pnpm-lock.yaml ./
RUN pnpm install --frozen-lockfile

# Copy source code
COPY . .

# Expose port
EXPOSE 3000

# Use development command with hot reload
CMD ["pnpm", "dev"]

# Builder stage - for production build
FROM node:20-alpine AS builder
WORKDIR /app

# Install pnpm globally
RUN npm install -g pnpm

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

# Install all dependencies (including dev dependencies for build)
RUN pnpm install --frozen-lockfile

# Copy source code
COPY . .

# Build TypeScript to JavaScript
RUN pnpm build

# Production stage - optimized final image
FROM node:20-alpine AS production
WORKDIR /app

# Create non-root user for security
RUN addgroup -g 1001 -S nodejs && adduser -S nodejs -u 1001

# Install pnpm globally
RUN npm install -g pnpm

# Copy package files
COPY --from=builder /app/package*.json ./
COPY --from=builder /app/pnpm-lock.yaml ./

# Install only production dependencies
RUN pnpm install --prod --frozen-lockfile

# Copy built application
COPY --from=builder /app/dist ./dist

# Create required directories and set ownership
RUN mkdir -p logs && chown -R nodejs:nodejs /app

# Switch to non-root user
USER nodejs

# Expose port
EXPOSE 3000

# Health check
HEALTHCHECK --interval=30s --timeout=10s --start-period=60s --retries=3 \
  CMD node -e "require('http').request('http://localhost:3000/health', (res) => { \
    process.exit(res.statusCode === 200 ? 0 : 1) \
  }).on('error', () => process.exit(1)).end()"

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