# Base image for all stages
# Uses Debian slim (glibc) instead of Alpine (musl) because native Node.js addons
# (matrix-sdk-crypto-nodejs, Prisma engines) require glibc-compatible binaries.
FROM node:24-slim 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 (no cache mount — Kaniko builds are ephemeral in CI)
RUN 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:24-slim AS production

# Install dumb-init for proper signal handling (static binary from GitHub,
# avoids apt-get which fails under Kaniko with bookworm GPG signature errors)
ADD https://github.com/Yelp/dumb-init/releases/download/v1.2.5/dumb-init_1.2.5_x86_64 /usr/local/bin/dumb-init

# Single RUN to minimize Kaniko filesystem snapshots (each RUN = full snapshot)
RUN rm -rf /usr/local/lib/node_modules/npm /usr/local/bin/npm /usr/local/bin/npx \
    && chmod 755 /usr/local/bin/dumb-init \
    && groupadd -g 1001 nodejs && useradd -m -u 1001 -g nodejs nestjs

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

# Copy entrypoint script (runs migrations before starting app)
COPY --from=builder --chown=nestjs:nodejs /app/apps/api/docker-entrypoint.sh ./apps/api/

# 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", "--"]

# Run migrations then start the application
CMD ["sh", "docker-entrypoint.sh"]
