# Trading Bot v4 - Production Docker Image
# Multi-stage build for optimal size and security

# ================================
# Stage 1: Dependencies
# ================================
FROM node:20-alpine AS deps

# Install system dependencies for native modules
RUN apk add --no-cache \
    python3 \
    make \
    g++ \
    libc6-compat

WORKDIR /app

# Copy package files
COPY package*.json ./

# Install dependencies (use npm install since we don't have package-lock.json yet)
RUN npm install --production && \
    npm cache clean --force

# ================================
# Stage 2: Builder
# ================================
FROM node:20-alpine AS builder

# Install system dependencies for Prisma
RUN apk add --no-cache \
    python3 \
    make \
    g++ \
    libc6-compat \
    openssl

WORKDIR /app

# Copy package files and install ALL dependencies (including dev)
COPY package*.json ./
RUN npm install

# Copy source code
COPY . .

# Generate Prisma client before building
RUN npx prisma generate

# Build Next.js application
ENV NEXT_TELEMETRY_DISABLED 1
ENV NODE_ENV production

RUN npm run build

# ================================
# Stage 3: Runner (Production)
# ================================
FROM node:20-alpine AS runner

# Install dumb-init for proper signal handling, Docker CLI for restart capability, and tzdata for timezone support
RUN apk add --no-cache dumb-init docker-cli tzdata

WORKDIR /app

# Create non-root user
RUN addgroup --system --gid 1001 nodejs && \
    adduser --system --uid 1001 nextjs && \
    addgroup nextjs root

# Copy necessary files from builder
COPY --from=builder /app/next.config.js ./
COPY --from=builder /app/package*.json ./

# Copy Next.js build output
COPY --from=builder --chown=nextjs:nodejs /app/.next/standalone ./
COPY --from=builder --chown=nextjs:nodejs /app/.next/static ./.next/static

# Copy Prisma schema and generated client from builder
COPY --from=builder /app/prisma ./prisma

# Copy node_modules from builder (includes Prisma client)
COPY --from=builder --chown=nextjs:nodejs /app/node_modules ./node_modules

# Set environment variables
ENV NODE_ENV production
ENV NEXT_TELEMETRY_DISABLED 1
ENV PORT 3000
ENV HOSTNAME "0.0.0.0"

# Expose port
EXPOSE 3000

# Switch to non-root user
USER nextjs

# Health check
HEALTHCHECK --interval=30s --timeout=10s --start-period=40s --retries=3 \
    CMD node -e "require('http').get('http://localhost:3000/api/health', (r) => {process.exit(r.statusCode === 200 ? 0 : 1)})"

# Use dumb-init to handle signals properly
ENTRYPOINT ["dumb-init", "--"]

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