# Build stage
FROM node:20-alpine AS builder

WORKDIR /app

# Copy package files
COPY package*.json ./

# Install dependencies
RUN npm ci

# Copy source code
COPY tsconfig.json ./
COPY src/ ./src/

# Build TypeScript
RUN npm run build

# Production stage
FROM node:20-alpine

WORKDIR /app

# Copy package files
COPY package*.json ./

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

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

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

USER nodejs

# Health check
HEALTHCHECK --interval=30s --timeout=10s --start-period=5s --retries=3 \
  CMD node -e "console.log('Bot running')" || exit 1

CMD ["node", "dist/index.js"]