#!/usr/bin/env bash
set -euo pipefail

DB_NAME="${DB_NAME:-domain}"
DB_USER="${DB_USER:-postgres}"
PSQL_BIN="${PSQL_BIN:-/www/server/pgsql/bin/psql}"

echo "[1/3] cluster nodes"
"${PSQL_BIN}" -U "${DB_USER}" -d "${DB_NAME}" -Atc "
select
  node_code || '|' ||
  role || '|' ||
  status || '|' ||
  coalesce(current_load, 0) || '|' ||
  to_char(last_heartbeat_at, 'YYYY-MM-DD HH24:MI:SS') || '|' ||
  coalesce(metadata_json->>'worker_online', '') || '|' ||
  coalesce(metadata_json->>'detect_participating', '')
from detect_worker_nodes
order by node_code;
"
echo

echo "[2/3] active job distribution"
"${PSQL_BIN}" -U "${DB_USER}" -d "${DB_NAME}" -Atc "
select
  coalesce(claimed_by, '') || '|' ||
  status || '|' ||
  count(*)
from detect_job_items
where job_id = (
  select id
  from detect_jobs
  where status in ('pending','running')
  order by id desc
  limit 1
)
group by claimed_by, status
order by claimed_by, status;
"
echo

echo "[3/3] condensed summary"
"${PSQL_BIN}" -U "${DB_USER}" -d "${DB_NAME}" -At <<'SQL'
with latest_job as (
  select id, job_code, status
  from detect_jobs
  where status in ('pending','running')
  order by id desc
  limit 1
),
node_stats as (
  select
    node_code,
    role,
    status,
    coalesce(metadata_json->>'worker_online', '') as worker_online,
    coalesce(metadata_json->>'detect_participating', '') as detect_participating
  from detect_worker_nodes
),
item_stats as (
  select
    coalesce(claimed_by, '') as claimed_by,
    status,
    count(*) as cnt
  from detect_job_items
  where job_id = (select id from latest_job)
  group by claimed_by, status
)
select json_build_object(
  'job', (
    select json_build_object(
      'job_code', coalesce(job_code, ''),
      'status', coalesce(status, '')
    )
    from latest_job
  ),
  'online_nodes', (
    select coalesce(json_agg(json_build_object(
      'node_code', node_code,
      'role', role,
      'status', status,
      'worker_online', worker_online,
      'detect_participating', detect_participating
    ) order by node_code), '[]'::json)
    from node_stats
    where status in ('online', 'busy')
  ),
  'claimed_distribution', (
    select coalesce(json_agg(json_build_object(
      'claimed_by', claimed_by,
      'status', status,
      'count', cnt
    ) order by claimed_by, status), '[]'::json)
    from item_stats
  )
);
SQL