# Stage 1: Build TypeScript
FROM node:18-alpine AS builder

WORKDIR /app

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

# Install ALL dependencies (including dev dependencies for build)
RUN npm ci

# Copy source code
COPY . .

# Build TypeScript to JavaScript
RUN npm run build

# ============================================================================
# Stage 2: Production Runtime
FROM node:18-alpine

WORKDIR /app

# Copy package files
COPY package*.json ./

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

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

COPY .env .env

# Copy any additional files needed at runtime
# COPY --from=builder /app/public ./public 2>/dev/null || true

# Create non-root user for security
RUN addgroup -g 1001 -S nodejs && \
    adduser -S nodejs -u 1001 && \
    chown -R nodejs:nodejs /app

USER nodejs

# Expose port
EXPOSE 3000

# Health check
HEALTHCHECK --interval=30s --timeout=5s --start-period=40s --retries=3 \
  CMD node -e "require('http').get('http://localhost:3000/api/v1/health', (r) => { process.exit(r.statusCode === 200 ? 0 : 1) })" || exit 1

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