# =============================================================================
# Dockerfile - Backend API
# ERP Construccion - Node.js + Express + TypeScript
# =============================================================================

# -----------------------------------------------------------------------------
# Stage 1: Base
# -----------------------------------------------------------------------------
FROM node:20-alpine AS base

# Install dependencies for native modules
RUN apk add --no-cache \
    python3 \
    make \
    g++ \
    curl

WORKDIR /app

# Copy package files
COPY package*.json ./

# -----------------------------------------------------------------------------
# Stage 2: Development
# -----------------------------------------------------------------------------
FROM base AS development

# Install all dependencies (including devDependencies)
RUN npm ci

# Copy source code
COPY . .

# Expose port (standard: 3021 for construccion backend)
EXPOSE 3021

# Development command with hot reload
CMD ["npm", "run", "dev"]

# -----------------------------------------------------------------------------
# Stage 3: Builder
# -----------------------------------------------------------------------------
FROM base AS builder

# Install all dependencies
RUN npm ci

# Copy source code
COPY . .

# Build TypeScript
RUN npm run build

# Prune devDependencies
RUN npm prune --production

# -----------------------------------------------------------------------------
# Stage 4: Production
# -----------------------------------------------------------------------------
FROM node:20-alpine AS production

# Security: Run as non-root user
RUN addgroup -g 1001 -S nodejs && \
    adduser -S nodejs -u 1001

WORKDIR /app

# Copy built application
COPY --from=builder --chown=nodejs:nodejs /app/dist ./dist
COPY --from=builder --chown=nodejs:nodejs /app/node_modules ./node_modules
COPY --from=builder --chown=nodejs:nodejs /app/package*.json ./

# Set user
USER nodejs

# Expose port (standard: 3021 for construccion backend)
EXPOSE 3021

# Health check
HEALTHCHECK --interval=30s --timeout=10s --start-period=40s --retries=3 \
    CMD curl -f http://localhost:3021/health || exit 1

# Production command
CMD ["node", "dist/server.js"]