// src/services/voiceDiag/checks/wan/wanSite.js
//
// Info-only anchor check for the WAN bucket. Confirms which Prisma
// SD-WAN site the store resolved to and how many appliances /
// links we're seeing. Doesn't grade anything — its whole purpose is
// to give the operator context ("yes we found the site; here's what
// we're seeing") before the per-signal checks below start emitting
// warn/error verdicts.
//
// Skipped when no Prisma site was matched — the runner shows that
// as `skipped: not applicable — missing sdwanSite`, which is more
// honest than a hard-coded "we couldn't reach Prisma" error
// because there are two genuine reasons the site is null: (1)
// this store isn't Prisma-managed at all, or (2) the Prisma
// integration is misconfigured. buildContext() logs which one it
// was.

import { maybeSkippedByKillSwitch } from './_helpers.js';

export const WAN_SITE_STANDARDS = Object.freeze({
  // No thresholds — this is a discovery/context check.
  requiresPrismaSite: true,
});

export const wanSiteCheck = {
  id: 'wanSite',
  label: 'SD-WAN Site Discovery',
  requires: ['sdwanSite'],
  scope: null,
  standards: WAN_SITE_STANDARDS,

  async run(ctx) {
    const skip = maybeSkippedByKillSwitch(wanSiteCheck);
    if (skip) return skip;

    const site = ctx.sdwanSite;
    const elements = Array.isArray(ctx.sdwanData?.elements) ? ctx.sdwanData.elements : [];
    const links    = Array.isArray(ctx.sdwanData?.links)    ? ctx.sdwanData.links    : [];

    const connectedCount = elements.filter((e) => e.connected).length;

    return {
      status: 'ok',
      message:
        `Site **${site.name}** (${elements.length} element${elements.length === 1 ? '' : 's'}, ` +
        `${connectedCount} connected) with ${links.length} WAN path${links.length === 1 ? '' : 's'}.`,
      details: {
        siteId: site.id,
        siteName: site.name,
        elementCount: elements.length,
        connectedElementCount: connectedCount,
        linkCount: links.length,
      },
      remediation: null,
    };
  },
};