# Stage 1: Build Next.js frontend (mastra runs in-process inside Next.js)
FROM node:22-slim AS frontend
WORKDIR /app
COPY package.json package-lock.json ./
RUN npm ci --legacy-peer-deps
COPY . .
# shared-tools/ is a symlink to ../../shared/typescript/tools — resolved at
# build time by CI which copies the target into the build context. The
# tsconfig.json path alias `@copilotkit/showcase-shared-tools` resolves
# to ./shared-tools, so next build needs it present.
COPY shared-tools/ ./shared-tools/
RUN npx next build

# Stage 2: Production image — runtime only (no build tools)
FROM node:22-slim AS runner
WORKDIR /app

# Install curl — entrypoint.sh watchdog uses it to probe the liveness endpoint.
# node:22-slim does NOT include curl by default, so without this the probe
# exits rc=127 "command not found" every cycle and the watchdog kill-loops
# the agent process indefinitely.
RUN apt-get update && apt-get install -y --no-install-recommends curl \
 && apt-get clean && rm -rf /var/lib/apt/lists/*

# Create unprivileged runtime user BEFORE any COPY so --chown resolves
# by name and so recursive chown over /app is never needed (fast builds).
RUN (groupadd --system --gid 1001 app 2>/dev/null || true) \
 && (useradd --system --uid 1001 --gid 1001 --no-create-home app 2>/dev/null || true) \
 && mkdir -p /home/app && chown app:app /home/app

# Next.js build artifacts + node_modules from the builder stage (no
# runtime install — `npx next start` resolves entirely from local deps).
COPY --chown=app:app --from=frontend /app/.next ./.next
COPY --chown=app:app --from=frontend /app/node_modules ./node_modules
COPY --chown=app:app --from=frontend /app/package.json ./
COPY --chown=app:app --from=frontend /app/public ./public

# Mastra agent code — imported in-process by the Next.js route handlers
# (src/app/api/copilotkit/route.ts -> @ag-ui/mastra -> src/mastra). Not a
# separate process, so no build step beyond Next.js bundling.
COPY --chown=app:app --from=frontend /app/src/mastra ./src/mastra

# Entrypoint
COPY --chown=app:app entrypoint.sh ./
RUN chmod +x entrypoint.sh

# Ensure WORKDIR itself is owned by `app` — `WORKDIR /app` at the top of the
# stage creates /app as root, and `COPY --chown=app:app` only reassigns the
# copied files, NOT the parent dir. Without this, any subprocess that tries
# to mkdir under /app at runtime (Next.js build caches, libsql local file,
# etc.) hits EACCES under the unprivileged user and crashes the container.
RUN chown app:app /app
USER app

EXPOSE 10000
# Intentionally NOT setting `ENV NODE_ENV=production` at the image level.
# Even though mastra's entrypoint is currently single-process, image-scope
# NODE_ENV would leak into any future child process (healthchecks, agent
# subprocesses) and mask dev/prod mismatches. entrypoint.sh scopes
# NODE_ENV=production to the Next.js invocation only.
ENV PORT=10000
ENV HOSTNAME=0.0.0.0
CMD ["./entrypoint.sh"]