#!/usr/bin/env bash
# scripts/deploy-watch.sh [MODEL] [INTERVAL]
#
# Compact "signal" watch for a deploy/settle arc: machine + unit state COUNTS plus a
# named list of principal units in error/blocked. Does NOT descend into subordinates;
# does NOT replace the phase gates. Read-only. Companion to the "detail" window
# (`juju status -m MODEL --watch 5s`).
#
# Usage:  scripts/deploy-watch.sh openstack 15
# Stop with Ctrl-C. Tolerant of transient juju-status failures during settle.
#
# Health-at-a-glance: the error/blocked section stays EMPTY until the expected late
# blocks (vault "needs init", octavia "awaiting configure-resources").
#
# Exit codes: 2 if jq is missing; otherwise runs until interrupted.

set -uo pipefail

SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
# shellcheck source=scripts/lib-net.sh
. "$SCRIPT_DIR/lib-net.sh"
need_jq || exit 2

MODEL="${1:-openstack}"
INTERVAL="${2:-15}"

while :; do
  ts="$(date '+%H:%M:%S')"
  J="$(juju status -m "$MODEL" --format json 2>/dev/null)" || J=""
  if [ -z "$J" ]; then
    printf '[%s] juju status unavailable (transient?) -- retry in %ss\n' "$ts" "$INTERVAL"
    sleep "$INTERVAL"; continue
  fi

  mach="$(printf '%s' "$J" | jq -r '.machines // {} | to_entries[] | .value."juju-status".current' \
          | sort | uniq -c | awk '{printf "%s=%s ",$2,$1}')"
  unit="$(printf '%s' "$J" | jq -r '.applications // {} | to_entries[] | .value.units // {} | to_entries[] | .value."workload-status".current' \
          | sort | uniq -c | awk '{printf "%s=%s ",$2,$1}')"
  prob="$(printf '%s' "$J" | jq -r '
    .applications // {} | to_entries[] | .value.units // {} | to_entries[]
    | select((.value."workload-status".current=="blocked")
          or (.value."workload-status".current=="error")
          or (.value."juju-status".current=="error"))
    | "    \(.key) [\(.value."workload-status".current)] \(.value."workload-status".message // "")"')"

  echo "================ [$ts] model=$MODEL ================"
  echo "machines: ${mach:-(none)}"
  echo "units:    ${unit:-(none)}"
  if [ -n "$prob" ]; then echo "error/blocked principals:"; echo "$prob"; else echo "error/blocked principals: (none)"; fi
  sleep "$INTERVAL"
done