# syntax=docker/dockerfile:1
# Enable BuildKit features for cache mounts

# Base image for all stages
FROM node:20-alpine AS base

# Install pnpm globally
RUN corepack enable && corepack prepare pnpm@10.27.0 --activate

# Set working directory
WORKDIR /app

# Copy monorepo configuration files
COPY pnpm-workspace.yaml package.json pnpm-lock.yaml ./
COPY turbo.json ./

# ======================
# Dependencies stage
# ======================
FROM base AS deps

# Copy all package.json files for workspace resolution
COPY packages/shared/package.json ./packages/shared/
COPY packages/ui/package.json ./packages/ui/
COPY packages/config/package.json ./packages/config/
COPY apps/api/package.json ./apps/api/

# Install dependencies with pnpm store cache
RUN --mount=type=cache,id=pnpm-store,target=/root/.local/share/pnpm/store \
    pnpm install --frozen-lockfile

# ======================
# Builder stage
# ======================
FROM base AS builder

# Copy root node_modules from deps
COPY --from=deps /app/node_modules ./node_modules

# Copy all source code FIRST
COPY packages ./packages
COPY apps/api ./apps/api

# Then copy workspace node_modules from deps (these go AFTER source to avoid being overwritten)
COPY --from=deps /app/packages/shared/node_modules ./packages/shared/node_modules
COPY --from=deps /app/packages/config/node_modules ./packages/config/node_modules
COPY --from=deps /app/apps/api/node_modules ./apps/api/node_modules

# Build the API app and its dependencies using TurboRepo
# --force disables turbo cache to ensure fresh build from source
RUN pnpm turbo build --filter=@mosaic/api --force

# ======================
# Production stage
# ======================
FROM node:20-alpine AS production

# Install dumb-init for proper signal handling
RUN apk add --no-cache dumb-init

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

WORKDIR /app

# Copy node_modules from builder (includes generated Prisma client in pnpm store)
# pnpm stores the Prisma client in node_modules/.pnpm/.../.prisma, so we need the full tree
COPY --from=builder --chown=nestjs:nodejs /app/node_modules ./node_modules

# Copy built packages (includes dist/ directories)
COPY --from=builder --chown=nestjs:nodejs /app/packages ./packages

# Copy built API application
COPY --from=builder --chown=nestjs:nodejs /app/apps/api/dist ./apps/api/dist
COPY --from=builder --chown=nestjs:nodejs /app/apps/api/prisma ./apps/api/prisma
COPY --from=builder --chown=nestjs:nodejs /app/apps/api/package.json ./apps/api/
# Copy app's node_modules which contains symlinks to root node_modules
COPY --from=builder --chown=nestjs:nodejs /app/apps/api/node_modules ./apps/api/node_modules

# Set working directory to API app
WORKDIR /app/apps/api

# Switch to non-root user
USER nestjs

# Expose API port (default 3001, can be overridden via PORT env var)
EXPOSE ${PORT:-3001}

# Health check uses PORT env var (set by docker-compose or defaults to 3001)
HEALTHCHECK --interval=30s --timeout=10s --start-period=40s --retries=3 \
  CMD node -e "const port = process.env.PORT || 3001; require('http').get('http://localhost:' + port + '/health', (r) => {process.exit(r.statusCode === 200 ? 0 : 1)})"

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

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