#!/usr/bin/env bash
# hashicorp/vault 0.32.0 - base variant: dev-mode
# Path: fetch this entry's retained objects, check their SHA-256, then apply
# them with kubectl. It uses curl, shasum, awk and kubectl. It needs no cub
# CLI and no ConfigHub account.
# Generated by scripts/generate-public-site.mjs from this entry's listing:
# https://confighub.github.io/helm-expt/site/listings/hashicorp-vault-0-32-0-dev-mode.json
# Entry page: https://confighub.github.io/helm-expt/site/charts/hashicorp-vault-0-32-0.html
set -euo pipefail

say() { printf '\n>> %s\n' "$*"; }

for tool in curl awk kubectl; do
  if ! command -v "$tool" >/dev/null 2>&1; then
    printf '%s is required and was not found.\n' "$tool" >&2
    exit 1
  fi
done
if command -v shasum >/dev/null 2>&1; then
  sha256_of() { shasum -a 256 "$1" | awk '{print $1}'; }
elif command -v sha256sum >/dev/null 2>&1; then
  sha256_of() { sha256sum "$1" | awk '{print $1}'; }
else
  printf 'shasum is required and was not found.\n' >&2
  exit 1
fi

work=./hashicorp-vault-0-32-0-dev-mode-objects
objects_url=https://raw.githubusercontent.com/confighub/helm-expt/main/recipes/hashicorp/vault/0.32.0/revisions/dev-mode/r001/rendered/release-objects.yaml
objects_sha256=f07ae80c317a1156f1f6ae6dc849300de0ba4683eb3ffae67cdcfcd6e8072955

say "Fetch the retained objects into $work/objects.yaml"
mkdir -p "$work"
curl -fsSL -o "$work/objects.yaml" "$objects_url"

say "Check the file against the SHA-256 in the listing"
fetched_sha256="$(sha256_of "$work/objects.yaml")"
if [ "$fetched_sha256" != "$objects_sha256" ]; then
  printf 'The file differs from the listing, so the script stops. Nothing was applied.\n  listing: %s\n  fetched: %s\n' "$objects_sha256" "$fetched_sha256" >&2
  exit 1
fi
printf 'The file matches: sha256 %s\n' "$fetched_sha256"

say "Split the file into its 11 objects. The cluster is untouched so far"
rm -rf "$work/docs" "$work/rest"
mkdir -p "$work/docs" "$work/rest"
awk -v dir="$work/docs" 'BEGIN { n = 0; f = sprintf("%s/doc-%04d.yaml", dir, n) } /^---[ \t]*$/ { close(f); n++; f = sprintf("%s/doc-%04d.yaml", dir, n); next } { print > f }' "$work/objects.yaml"
for n in 0001 0002 0003 0004 0005 0006 0007 0008 0009 0010 0011; do mv "$work/docs/doc-$n.yaml" "$work/rest/"; done
ls "$work/rest"

say "Check that kubectl reaches a cluster"
if ! kubectl get --raw /version >/dev/null 2>&1; then
  printf 'kubectl cannot reach a cluster. Point it at a throwaway cluster and re-run this script.\n' >&2
  exit 1
fi
kubectl config current-context 2>/dev/null || true

say "Create the vault namespace if it does not exist"
if ! kubectl get namespace vault >/dev/null 2>&1; then
  kubectl create namespace vault
fi

say "Apply the 11 objects"
kubectl apply -f "$work/rest"

say "Done. kubectl applied the 11 objects of this entry's retained file."
say "The script stops here. It did not wait for any workload to start"
say "Not run by this script: 1 step of this entry's plan. The entry page says who runs it."
cat <<'EOF_NOT_RUN'
   - Route to cert-manager or a certgen lifecycle route for the 1 webhook configuration(s) this base renders. The Vault agent injector makes its own certificate after it starts and fills the caBundle of the webhook configuration vault-agent-injector-cfg, so you do nothing for this step.
EOF_NOT_RUN