# Bookstore — Part 07 ch.04: the DEV environment Application.
#
# A child of the App-of-Apps root (../01-app-of-apps.yaml). It points Argo CD
# at the REAL 6b dev kustomize overlay and reconciles it into `bookstore`.
# Argo CD natively renders a kustomize path (it runs `kustomize build`
# server-side — exactly the ch.02 pipeline; the overlay's RootOnly-safe
# vendored base is why this works without loader flags).
#
# overlays/dev → 45 objects (base 49 − HPA − 3 PDB; the documented dev knobs).
#
# CRD-INTRINSIC NOTE: `Application` is `argoproj.io/v1alpha1` (Argo CD CRD).
# Without Argo CD installed a client dry-run prints `no matches for kind
# "Application"` — EXPECTED, schema-correct (same precedent as 18-/51-/70-/
# 80-/83- and the Helm/Kustomize CRD extras). See ../00-appproject.yaml.
#
# PLACEHOLDER `repoURL`: generic `https://github.com/your-org/bookstore` —
# replace `your-org`. The path is the real, verified 6b overlay in this repo.
apiVersion: argoproj.io/v1alpha1
kind: Application
metadata:
  name: bookstore-dev
  namespace: argocd
  finalizers:
    - resources-finalizer.argocd.argoproj.io
spec:
  # MUST be a project that allows this repo + the bookstore namespace.
  project: bookstore
  source:
    repoURL: https://github.com/your-org/bookstore.git   # PLACEHOLDER — replace your-org
    targetRevision: main                                 # dev tracks main (latest)
    # The REAL 6b dev overlay. Argo CD detects kustomization.yaml and runs
    # `kustomize build` on it (ch.02). Verified to exist in this repo.
    path: examples/bookstore/kustomize/overlays/dev
  destination:
    server: https://kubernetes.default.svc
    # The overlay's `namespace: bookstore` transformer already stamps every
    # namespaced object; this MUST match (Argo CD compares). The base also
    # SHIPS the Namespace object (00-namespace.yaml) with PSA-restricted
    # labels — so CreateNamespace is intentionally false (below).
    namespace: bookstore
  syncPolicy:
    automated:
      prune: true        # an object removed from Git is deleted from the cluster
      selfHeal: true     # a manual `kubectl edit` is reverted to Git (demo §5)
    syncOptions:
      # FALSE on purpose: the kustomize BASE owns the Namespace object
      # (00-namespace.yaml — it carries the PSA `restricted` labels +
      # ResourceQuota + LimitRange). Letting Argo create a bare namespace
      # instead would drop those labels and PSA would not enforce. The
      # Namespace travels WITH the synced manifests, exactly like
      # `kubectl apply -k` (ch.02 — there is no `--create-namespace`).
      - CreateNamespace=false
      - ApplyOutOfSyncOnly=true   # only re-apply objects that actually drifted
    retry:
      limit: 5
      backoff:
        duration: 5s
        factor: 2
        maxDuration: 3m
  # Argo CD owns replica COUNTS via the overlay; but if anything ever layered
  # an HPA on a synced workload, the live `.spec.replicas` would differ from
  # Git every scale event → permanent "OutOfSync"/self-heal fight. dev has NO
  # HPA (the overlay $patch:deletes it), so none is needed here; the
  # ignoreDifferences pattern is shown (commented) and is REQUIRED in
  # staging/prod where the HPA is on — see those files and ch.05's
  # HPA↔workload-owner discussion.
  # ignoreDifferences:
  #   - group: apps
  #     kind: Deployment
  #     jsonPointers: ["/spec/replicas"]