// Unit tests for services/renderers/voiceDiagRenderer.js. Renderer
// is pure — no I/O — so the tests just assert on the produced
// markdown string. The interesting cases are:
//
//   - severity buckets appear in the right order
//   - the OK bucket is hidden by default and shown under `detailed`
//   - the fixable-issues footer counts and lists only remediable
//     results (an OK check with a remediation still doesn't count,
//     since we filter status !== 'ok')
//   - the details block is only rendered under `detailed`
//   - empty result list yields a benign single-line message

import test from 'node:test';
import assert from 'node:assert/strict';

import { renderVoiceDiagMarkdown } from '../services/renderers/voiceDiagRenderer.js';

const R = (id, status, message, remediation = null, details = null, label = null) => ({
  id,
  label: label || `Check ${id}`,
  status,
  message,
  details,
  remediation,
});

const REMEDIATION = {
  action: 'disable_dnd',
  title: 'Disable DND',
  summary: 'Turn DND off.',
  payload: {},
};

test('renderer: empty results → benign message', () => {
  const md = renderVoiceDiagMarkdown([], { storeNum: '12345' });
  assert.match(md, /Voice Diagnostic - Store 12345/);
  assert.match(md, /No checks were executed/);
});

test('renderer: header includes personLabel + email when provided', () => {
  const md = renderVoiceDiagMarkdown([], {
    storeNum: '12345',
    personLabel: 'Store 12345',
    email: 'ae12345@ae.com',
  });
  assert.match(md, /user: Store 12345 — ae12345@ae\.com/);
});

test('renderer: mixed severities render in error → warn → skipped order (default hides ok)', () => {
  const results = [
    R('c1', 'ok',      'all good'),
    R('c2', 'warn',    'watch this', REMEDIATION),
    R('c3', 'error',   'boom'),
    R('c4', 'skipped', '403 missing scope'),
    R('c5', 'ok',      'also good'),
  ];
  const md = renderVoiceDiagMarkdown(results, { storeNum: '99' });

  const orderIdx = ['**ERRORS**', '**WARNINGS**', '**SKIPPED**'].map((h) => md.indexOf(h));
  assert.ok(orderIdx.every((i) => i > -1), `all severity headings present, got ${orderIdx}`);
  assert.ok(orderIdx[0] < orderIdx[1], 'ERRORS before WARNINGS');
  assert.ok(orderIdx[1] < orderIdx[2], 'WARNINGS before SKIPPED');
  assert.equal(md.includes('**OK**'), false, 'OK bucket hidden by default');
  assert.match(md, /OK check\(s\) hidden — pass `detailed`/);
});

test('renderer: summary line reports every bucket count', () => {
  const results = [
    R('c1', 'ok',      'a'),
    R('c2', 'warn',    'b'),
    R('c3', 'warn',    'c'),
    R('c4', 'error',   'd'),
    R('c5', 'skipped', 'e'),
    R('c6', 'ok',      'f'),
    R('c7', 'ok',      'g'),
  ];
  const md = renderVoiceDiagMarkdown(results, { storeNum: '99' });
  assert.match(md, /Errors \(1\) · Warnings \(2\) · Skipped \(1\) · OK \(3\)/);
});

test('renderer: detailed mode surfaces OK bucket + details block', () => {
  const results = [
    R('c1', 'ok', 'all good', null, { enabled: false, mwiEnabled: true }),
  ];
  const md = renderVoiceDiagMarkdown(results, { storeNum: '99', detailed: true });
  assert.match(md, /\*\*OK\*\*/);
  assert.match(md, /enabled: false, mwiEnabled: true/);
});

test('renderer: fixable footer counts non-ok results with a remediation only', () => {
  const results = [
    R('c1', 'warn',  'w1', REMEDIATION),
    R('c2', 'error', 'e1', REMEDIATION),
    R('c3', 'ok',    'o1', REMEDIATION),  // OK w/ remediation should NOT count
    R('c4', 'warn',  'w2'),                // warn w/o remediation should NOT count
  ];
  const md = renderVoiceDiagMarkdown(results, { storeNum: '99' });
  assert.match(md, /Fixable issues \(2\)/);
  const footerLineCount = (md.match(/^- Check c[12]: Disable DND/gm) || []).length;
  assert.equal(footerLineCount, 2, 'footer lists exactly the fixable ones');
});

test('renderer: no fixable-footer emitted when nothing is fixable', () => {
  const results = [
    R('c1', 'warn',  'no fix'),
    R('c2', 'error', 'no fix'),
  ];
  const md = renderVoiceDiagMarkdown(results, { storeNum: '99' });
  assert.equal(md.includes('Fixable issues'), false);
});

test('renderer: emitFooter=false suppresses trailing timestamp', () => {
  const md = renderVoiceDiagMarkdown([R('c1', 'ok', 'good')], {
    storeNum: '99',
    detailed: true,
    emitFooter: false,
  });
  assert.equal(md.includes('Last checked'), false);
});

test('renderer: emitFooter=true (default) adds an ISO timestamp line', () => {
  const md = renderVoiceDiagMarkdown([R('c1', 'ok', 'good')], {
    storeNum: '99',
    detailed: true,
  });
  assert.match(md, /_Last checked: \d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}/);
});

test('renderer: details values — arrays truncated past 3 items, nested objects JSON-ified', () => {
  const results = [
    R('c1', 'warn', 'x', null, {
      long: ['a', 'b', 'c', 'd', 'e'],
      short: ['a', 'b'],
      nested: { foo: 'bar', n: 1 },
      nada: null,
    }),
  ];
  const md = renderVoiceDiagMarkdown(results, { storeNum: '99', detailed: true });
  assert.match(md, /long: \[a, b, c, …\+2\]/);
  assert.match(md, /short: \[a, b\]/);
  assert.match(md, /nested: \{"foo":"bar","n":1\}/);
  assert.match(md, /nada: —/);
});

test('renderer: --detail off does not include details even when present', () => {
  const results = [
    R('c1', 'warn', 'x', null, { foo: 'bar' }),
  ];
  const md = renderVoiceDiagMarkdown(results, { storeNum: '99' });
  assert.equal(md.includes('foo: bar'), false);
});

test('renderer: skipped bucket shown even without detail', () => {
  const results = [
    R('c1', 'skipped', '403 missing scope'),
  ];
  const md = renderVoiceDiagMarkdown(results, { storeNum: '99' });
  assert.match(md, /\*\*SKIPPED\*\*/);
  assert.match(md, /403 missing scope/);
});

// ─── Shape-aware detail formatters ──────────────────────────────────

test('renderer: perLink shape → clean per-link list with verdict icons + threshold + roll-up', () => {
  const results = [
    R('wanLatency', 'ok', 'All 3 paths ok', null, {
      total: 3, ok: 3, warn: 0, error: 0,
      warnThresh: 150, errorThresh: 400,
      standardLabel: 'warn > 150ms, error > 400ms',
      perLink: [
        { link: 'Inet1-00782',  value: 22.2, interfaceId: '1', verdict: 'ok' },
        { link: 'Inet2-00782',  value: 13.5, interfaceId: '2', verdict: 'ok' },
        { link: '5G-LTE-00782', value: 52.4, interfaceId: '3', verdict: 'ok' },
      ],
    }),
  ];
  const md = renderVoiceDiagMarkdown(results, { storeNum: '782', detailed: true });
  // Clean per-link list — one line per link with verdict icon
  assert.match(md, /Threshold: warn > 150ms, error > 400ms/);
  assert.match(md, /Per link:/);
  assert.match(md, /✅ Inet1-00782: 22\.2/);
  assert.match(md, /✅ Inet2-00782: 13\.5/);
  assert.match(md, /✅ 5G-LTE-00782: 52\.4/);
  assert.match(md, /Roll-up: 3 total · 3 ok · 0 warn · 0 error/);
  // Must NOT dump the raw perLink JSON in a stringified form.
  assert.equal(md.includes('"link":'), false);
  assert.equal(md.includes('interfaceId'), false);
});

test('renderer: perLink shape — surfaces per-link warn/error icons', () => {
  const results = [
    R('wanLatency', 'warn', '1 path in warning', null, {
      total: 3, ok: 2, warn: 1, error: 0,
      standardLabel: 'warn > 150ms, error > 400ms',
      perLink: [
        { link: 'Inet1',   value: 22,  verdict: 'ok' },
        { link: 'Inet2',   value: 175, verdict: 'warn' },
        { link: '5G-LTE',  value: 450, verdict: 'error' },
      ],
    }),
  ];
  const md = renderVoiceDiagMarkdown(results, { storeNum: '782', detailed: true });
  assert.match(md, /✅ Inet1: 22/);
  assert.match(md, /⚠️ Inet2: 175/);
  assert.match(md, /❌ 5G-LTE: 450/);
});

test('renderer: link-state shape → up/down/unknown roll-up + offender list', () => {
  const results = [
    R('wanLinkState', 'error', '1 WAN path down', null, {
      total: 3, up: 2, down: 1, unknown: 0,
      offenders: ['5G-LTE-00782'],
      unknownLabels: [],
    }),
  ];
  const md = renderVoiceDiagMarkdown(results, { storeNum: '782', detailed: true });
  assert.match(md, /Roll-up: 3 total · 2 up · 1 down · 0 unknown/);
  assert.match(md, /Down: 5G-LTE-00782/);
  // No stringified offenders array
  assert.equal(md.includes('"offenders"'), false);
});

test('renderer: alarm shape → counts one-liner + recent alarm list (raw code fallback)', () => {
  const results = [
    R('wanAlarms', 'warn', '2 major alarms in last hour', null, {
      critical: 0, major: 2, minor: 1,
      recentSamples: [
        { type: 'NETWORK_ANYNETLINK_DOWN', severity: 'major' },
        { code: 'DEVICE_HB_MISSED', severity: 'minor' },
      ],
    }),
  ];
  const md = renderVoiceDiagMarkdown(results, { storeNum: '782', detailed: true });
  assert.match(md, /Counts: 🔴 0 critical · 🟠 2 major · 🟡 1 minor/);
  assert.match(md, /Recent:/);
  assert.match(md, /NETWORK_ANYNETLINK_DOWN \(major\)/);
  assert.match(md, /DEVICE_HB_MISSED \(minor\)/);
});

test('renderer: alarm shape → new byCategory + humanized rollup format', () => {
  const results = [
    R('wanAlarms', 'warn', '20 major alarms in the last 1d — most common: SD-WAN overlay tunnel down (×20, latest 3h ago). These affect SD-WAN overlay/VPN tunnels between sites; physical WAN paths are all up per the Link State check.', null, {
      critical: 0, major: 20, minor: 0,
      window: '1d',
      byCategory: { overlay: 20, physical: 0, device: 0, other: 0, total: 20 },
      recentSamples: [
        {
          code: 'NETWORK_ANYNETLINK_DOWN',
          humanized: 'SD-WAN overlay tunnel down',
          category: 'overlay',
          severity: 'major',
          count: 20,
          age: '3h ago',
        },
      ],
    }),
  ];
  const md = renderVoiceDiagMarkdown(results, { storeNum: '782', detailed: true });
  // Counts line still present.
  assert.match(md, /Counts: 🔴 0 critical · 🟠 20 major · 🟡 0 minor/);
  // Category breakdown appears when byCategory is populated.
  assert.match(md, /Category: 20 overlay\/VPN/);
  // Humanized label first, raw code in backticks, count, and age.
  assert.match(md, /SD-WAN overlay tunnel down/);
  assert.match(md, /`NETWORK_ANYNETLINK_DOWN`/);
  assert.match(md, /×20/);
  assert.match(md, /3h ago/);
});

test('renderer: healthscore shape → breakdown only (value already in message)', () => {
  const results = [
    R('wanHealthscore', 'ok', 'Healthscore 100/100 (>=80).', null, {
      value: 100, warnThresh: 80, errorThresh: 60, breakdown: {},
    }),
  ];
  const md = renderVoiceDiagMarkdown(results, { storeNum: '782', detailed: true });
  // Breakdown is empty → no useless "- value: 100, warnThresh: 80..." line
  assert.equal(md.includes('warnThresh'), false, 'threshold constants already in the message');
  assert.equal(md.includes('errorThresh'), false);
});

test('renderer: healthscore shape → surfaces breakdown when populated', () => {
  const results = [
    R('wanHealthscore', 'warn', 'Score 75', null, {
      value: 75, warnThresh: 80, errorThresh: 60,
      breakdown: { link_health: 60, device_health: 85 },
    }),
  ];
  const md = renderVoiceDiagMarkdown(results, { storeNum: '782', detailed: true });
  assert.match(md, /Breakdown: link_health: 60 · device_health: 85/);
});

test('renderer: WAN window banner shown when wanWindowMinutes provided AND a wan* check is present', () => {
  const results = [
    R('wanHealthscore', 'ok', 'ok', null, { value: 100, warnThresh: 80, errorThresh: 60 }),
  ];
  const md = renderVoiceDiagMarkdown(results, {
    storeNum: '782', detailed: false, wanWindowMinutes: 1440,
  });
  assert.match(md, /WAN window: 1d/);
});

test('renderer: WAN window banner hidden when no wan* check runs', () => {
  const results = [R('dnd', 'ok', 'ok')];
  const md = renderVoiceDiagMarkdown(results, {
    storeNum: '782', wanWindowMinutes: 60,
  });
  assert.equal(md.includes('WAN window'), false,
    'no need to advertise a WAN window when no WAN check ran');
});

test('renderer: WAN window banner formats: 15m / 1h / 6h / 1d / 7d', () => {
  const wanResult = [
    R('wanLatency', 'ok', 'ok', null, {
      total: 1, ok: 1, warn: 0, error: 0,
      perLink: [{ link: 'A', value: 20, verdict: 'ok' }],
    }),
  ];
  const cases = [
    { min: 15,    expect: 'WAN window: 15m' },
    { min: 60,    expect: 'WAN window: 1h' },
    { min: 360,   expect: 'WAN window: 6h' },
    { min: 1440,  expect: 'WAN window: 1d' },
    { min: 10080, expect: 'WAN window: 7d' },  // new default
    { min: 45,    expect: 'WAN window: 45m' },
  ];
  for (const c of cases) {
    const md = renderVoiceDiagMarkdown(wanResult, { storeNum: '1', wanWindowMinutes: c.min });
    assert.ok(md.includes(c.expect), `${c.min} minutes → "${c.expect}", got:\n${md}`);
  }
});

// ─── Per-app audio details renderer ─────────────────────────────────
//
// renderAppAudioDetails is triggered by shape detection on
// {appName, worst, validSamples} — the fixture below carries all
// three so the shape-aware branch fires (rather than the JSON dump
// fallback which is what we're guarding against). appName is asserted
// verbatim from the fixture (not hardcoded to a specific app) — see
// wanAppRtpMos.js for the tenant-configurable contract.

test('renderer: per-app audio MOS details render worst-window + threshold + range (Webex_Calling_RTP)', () => {
  const wanResult = R(
    'wanAppRtpMos',
    'error',
    'Actual voice traffic (Webex_Calling_RTP) worst-window MOS: 1.60 < 3.5 (avg 4.27 over 33 valid samples)…',
    null,
    {
      appName: 'Webex_Calling_RTP',
      worst: 1.60, avg: 4.27, min: 1.60, max: 4.41, p95: 4.28,
      samples: 55, validSamples: 33, interval: '5min',
      warnThresh: 4.0, errorThresh: 3.5,
      standardLabel: 'warn < 4, error < 3.5',
      unit: '',
      badSampleCount: 4, badSamplePct: 12,
    },
    'SD-WAN Voice Traffic MOS (worst window)',
  );
  const md = renderVoiceDiagMarkdown([wanResult], { storeNum: '127', detailed: true });

  // The app name is threaded from the fixture (appAudio.appName) — the
  // renderer must not hardcode "rtp-base" so tenants using
  // Webex_Calling_RTP, MS_Teams_RTP, etc. render correctly.
  assert.match(md, /App: Webex_Calling_RTP \(voice traffic, DPI\)/);
  assert.match(md, /Threshold: warn < 4, error < 3\.5/);
  assert.match(md, /Worst window: \*\*1\.6\*\*/);
  assert.match(md, /Avg: 4\.27/);
  assert.match(md, /p95: 4\.28/);
  assert.match(md, /Range: 1\.6 – 4\.41 across 33\/55 samples @ 5min/);
  assert.match(md, /Time in warn\/error: 4 samples/);
  // Absence check — the fallback JSON key:value dump must NOT appear.
  assert.doesNotMatch(md, /"values":/, 'shape-aware formatter must not dump raw JSON');
});

test('renderer: per-app audio details fall back to "voice" when appName absent (defensive)', () => {
  // If a fixture / integration test forgets to set appName (or a
  // future refactor drops it), the renderer must not crash or render
  // "undefined" — fall back to the generic "voice" label.
  const wanResult = R(
    'wanAppRtpMos', 'ok', 'ok',
    null,
    {
      appName: null,
      worst: 4.4, avg: 4.5, min: 4.4, max: 4.6, p95: 4.5,
      samples: 12, validSamples: 12, interval: '5min',
      warnThresh: 4.0, errorThresh: 3.5,
      unit: '', badSampleCount: 0, badSamplePct: 0,
    },
    'SD-WAN Voice Traffic MOS (worst window)',
  );
  const md = renderVoiceDiagMarkdown([wanResult], { storeNum: '127', detailed: true });
  assert.match(md, /App: voice \(voice traffic, DPI\)/,
    'null appName must fall back to generic "voice" label');
});

test('renderer: per-app audio details renders "View in Prisma UI" deep link when detailsUrl is set', () => {
  const wanResult = R(
    'wanAppRtpMos', 'error', 'msg',
    null,
    {
      appName: 'Webex_Calling_RTP',
      worst: 1.85, avg: 3.55, min: 1.85, max: 4.41, p95: 4.28,
      samples: 288, validSamples: 288, interval: '5min',
      warnThresh: 4.0, errorThresh: 3.5,
      standardLabel: 'warn < 4, error < 3.5',
      unit: '',
      badSampleCount: 42, badSamplePct: 15,
      detailsUrl: 'https://stratacloudmanager.paloaltonetworks.com/insights/operational/sdwan-applications/1708539371717015196/site/16190109915660160/details',
    },
    'SD-WAN Voice Traffic MOS (worst window)',
  );
  const md = renderVoiceDiagMarkdown([wanResult], { storeNum: '127', detailed: true });
  assert.match(
    md,
    /\[View in Prisma UI\]\(https:\/\/stratacloudmanager\.paloaltonetworks\.com\/insights\/operational\/sdwan-applications\/1708539371717015196\/site\/16190109915660160\/details\)/,
    'deep link must render as a markdown link so Webex chats it as a clickable URL',
  );
});

test('renderer: per-app audio details omits Prisma link when detailsUrl is not set', () => {
  const wanResult = R(
    'wanAppRtpMos', 'error', 'msg',
    null,
    {
      appName: 'Webex_Calling_RTP',
      worst: 1.85, avg: 3.55, min: 1.85, max: 4.41, p95: 4.28,
      samples: 288, validSamples: 288, interval: '5min',
      warnThresh: 4.0, errorThresh: 3.5,
      unit: '',
      badSampleCount: 42, badSamplePct: 15,
    },
    'SD-WAN Voice Traffic MOS (worst window)',
  );
  const md = renderVoiceDiagMarkdown([wanResult], { storeNum: '127', detailed: true });
  assert.doesNotMatch(md, /View in Prisma UI/);
});

test('renderer: per-app audio details — clean window says "0 samples (clean throughout window)"', () => {
  const wanResult = R(
    'wanAppRtpLoss', 'ok', 'ok',
    null,
    {
      appName: 'Webex_Calling_RTP',
      worst: 0, avg: 0, min: 0, max: 0, p95: 0,
      samples: 288, validSamples: 288, interval: '5min',
      warnThresh: 5, errorThresh: 15,
      standardLabel: 'warn > 5%, error > 15%',
      unit: '%',
      badSampleCount: 0, badSamplePct: 0,
    },
    'SD-WAN Voice Traffic Packet Loss (worst window)',
  );
  const md = renderVoiceDiagMarkdown([wanResult], { storeNum: '127', detailed: true });
  assert.match(md, /Time in warn\/error: 0 samples \(clean throughout window\)/);
});