# Multi-stage build for NestJS Serverless Application
FROM node:18-alpine AS builder

# Set working directory
WORKDIR /app

# Copy package files
COPY package*.json ./
COPY prisma ./prisma/

# Install dependencies
RUN npm ci --only=production && npm cache clean --force

# Copy source code
COPY . .

# Generate Prisma client
RUN npx prisma generate

# Build the application
RUN npm run build

# Production stage
FROM node:18-alpine AS production

# Set working directory
WORKDIR /app

# Install serverless framework globally
RUN npm install -g serverless

# Copy package files
COPY package*.json ./

# Install production dependencies
RUN npm ci --only=production && npm cache clean --force

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

# Copy serverless configuration
COPY serverless*.yml ./

# Create non-root user
RUN addgroup -g 1001 -S nodejs
RUN adduser -S nestjs -u 1001

# Change ownership
RUN chown -R nestjs:nodejs /app
USER nestjs

# Expose port
EXPOSE 3000

# Health check
HEALTHCHECK --interval=30s --timeout=3s --start-period=5s --retries=3 \
  CMD curl -f http://localhost:3000/health || exit 1

# Start the application
CMD ["npm", "run", "start:prod"]