# Build context: bytelyst-devops-tools/dashboard/ (monorepo root)
# --- Stage 1: Build ---
FROM node:20-alpine AS builder

WORKDIR /app/backend

COPY backend/package.json backend/package-lock.json ./
RUN npm ci --ignore-scripts

COPY backend/tsconfig.json ./
COPY backend/src/ ./src/

# Build-time env vars (baked into the bundle)
ARG BYTELYST_COMMIT_SHA=unknown
ARG BYTELYST_COMMIT_SHA_FULL=unknown
ARG BYTELYST_BRANCH=unknown
ARG BYTELYST_BUILT_AT=unknown
ARG BYTELYST_COMMIT_AUTHOR=unknown
ARG BYTELYST_COMMIT_MESSAGE=unknown
ARG BYTELYST_DOCKER_IMAGE=devops-backend:latest

ENV BYTELYST_COMMIT_SHA=${BYTELYST_COMMIT_SHA} \
    BYTELYST_COMMIT_SHA_FULL=${BYTELYST_COMMIT_SHA_FULL} \
    BYTELYST_BRANCH=${BYTELYST_BRANCH} \
    BYTELYST_BUILT_AT=${BYTELYST_BUILT_AT} \
    BYTELYST_COMMIT_AUTHOR=${BYTELYST_COMMIT_AUTHOR} \
    BYTELYST_COMMIT_MESSAGE=${BYTELYST_COMMIT_MESSAGE} \
    BYTELYST_DOCKER_IMAGE=${BYTELYST_DOCKER_IMAGE}

RUN npm run build

# --- Stage 2: Run ---
# Use Debian slim (not Alpine) because vm-health-check.sh uses GNU df flags
# (--output=pcent, --output=avail) that BusyBox df does not support.
FROM node:20-slim AS runner

WORKDIR /app/backend

COPY backend/package.json backend/package-lock.json ./
RUN npm ci --omit=dev --ignore-scripts

# Install tools needed by the VM management module:
#   bash       — vm-health-check.sh and vm-cleanup.sh require bash
#   docker.io  — docker CLI to communicate with the host daemon via socket
#   python3    — used in inline python3 -c snippets inside the scripts
RUN apt-get update && apt-get install -y --no-install-recommends \
      curl bash docker.io python3 \
    && rm -rf /var/lib/apt/lists/*

COPY --from=builder /app/backend/dist ./dist

ENV NODE_ENV=production
ENV PORT=4004

EXPOSE 4004

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