// Test environment only. Uses real PostgreSQL in a new isolated schema; no Nest lifecycle or external delivery.
// CMPP_DIAGNOSTIC_ENV=test node --expose-gc <script> <candidate-api-root>
import { createRequire } from 'node:module';
import { resolve } from 'node:path';
import { readFileSync } from 'node:fs';
import assert from 'node:assert/strict';

if (process.env.CMPP_DIAGNOSTIC_ENV !== 'test') throw new Error('Explicit test environment is required');
const root = resolve(process.argv[2]);
const require = createRequire(resolve(root, 'package.json'));
const { Pool } = require('pg');
const { PrismaPg } = require('@prisma/adapter-pg');
const { PrismaClient } = require('@prisma/client');
const { SignatureRetirementService } = require(
  resolve(root, 'dist/signature-retirement/signature-retirement.service.js'),
);
const schema = `cmpp_fix_20260908_${Date.now()}`;
const admin = new Pool({ connectionString: process.env.DATABASE_URL, max: 1 });
const tables = [
  'Tenant',
  'SmsApplication',
  'SmsSignature',
  'SmsChannel',
  'SignatureRetirementDetection',
  'SignatureRetirementMessage',
  'SignatureRetirementSuppression',
  'SignatureRetirementWebhook',
  'SignatureRetirementWebhookDelivery',
  'OperationLog',
  'ChannelSignatureReportTask',
];
const clients = [];
const checks = [];
try {
  const before = (await admin.query('SELECT count(*)::int AS count FROM public."SmsMessageRecord"')).rows[0].count;
  await admin.query(`CREATE SCHEMA "${schema}"`);
  for (const table of tables)
    await admin.query(`CREATE TABLE "${schema}"."${table}" (LIKE public."${table}" INCLUDING ALL)`);
  const columns = await admin.query(
    'SELECT 1 FROM information_schema.columns WHERE table_schema=$1 AND table_name=$2 AND column_name=$3',
    [schema, 'SignatureRetirementMessage', 'dailyGroupKey'],
  );
  if (!columns.rowCount) {
    await admin.query(`SET search_path TO "${schema}"`);
    await admin.query(
      readFileSync(
        resolve(root, 'prisma/migrations/20260908050000_retirement_application_daily_message/migration.sql'),
        'utf8',
      ),
    );
  }
  for (let i = 0; i < 2; i++) {
    const url = new URL(process.env.DATABASE_URL);
    url.searchParams.set('options', `-c search_path=${schema} -c statement_timeout=15000`);
    clients.push(
      new PrismaClient({
        adapter: new PrismaPg(new Pool({ connectionString: url.toString(), max: 2 }), {
          schema,
          disposeExternalPool: true,
        }),
      }),
    );
  }
  const [db, other] = clients;
  assert.equal((await db.$queryRawUnsafe('SELECT current_schema() AS schema'))[0].schema, schema);
  const service = new SignatureRetirementService(db);
  const peer = new SignatureRetirementService(other);
  const date = '2026-09-08';
  for (const id of ['t1', 't2']) await db.tenant.create({ data: { id, code: `QA-${id}`, name: id } });
  for (const id of ['app1', 'app2'])
    await db.smsApplication.create({
      data: {
        id,
        tenantId: 't1',
        name: id,
        cmppAccount: `QA-${id}`,
        cmppEnterpriseCode: 'QA',
        secretHash: 'isolated-not-a-credential',
        status: 'disabled',
      },
    });
  for (const [id, app, tenant] of [
    ['s1', 'app1', 't1'],
    ['s2', 'app1', 't1'],
    ['s3', 'app2', 't1'],
    ['s4', null, 't1'],
    ['s5', null, 't2'],
  ]) {
    await db.smsSignature.create({
      data: { id, tenantId: tenant, applicationId: app, name: id, auditStatus: 'approved' },
    });
    await db.signatureRetirementDetection.create({
      data: {
        id: `d-${id}`,
        detectionDate: new Date(date),
        dimensionType: 'enterprise',
        tenantId: tenant,
        applicationId: app,
        signatureId: id,
        carrier: 'mobile',
        windowDays: 30,
        threshold: 1,
        approvedAt: new Date('2026-01-01'),
        status: 'alert',
        cycleId: `cycle-${id}`,
        notificationTitle: '预警',
        notificationContent: `冻结正文-${id}`,
      },
    });
  }
  const concurrent = await Promise.all([service.publishNotifications(date), peer.publishNotifications(date)]);
  assert.equal(
    concurrent.reduce((sum, item) => sum + item.created, 0),
    4,
  );
  assert.equal(await db.signatureRetirementMessage.count(), 4);
  assert.equal((await service.publishNotifications(date)).created, 0);
  const grouped = await db.signatureRetirementMessage.findFirstOrThrow({ where: { applicationId: 'app1' } });
  assert.deepEqual(grouped.detectionIds, ['d-s1', 'd-s2']);
  assert.equal(grouped.content, '冻结正文-s1\n冻结正文-s2');
  checks.push('two-instance daily uniqueness, app/tenant isolation, frozen contents, repeat idempotency');
  const page = await service.listMessages({ dateFrom: date, dateTo: date, signatureKeyword: 's2' });
  assert.equal(page.total, 1);
  assert.equal(page.items[0].id, grouped.id);
  assert.equal(page.items[0].detections.length, 2);
  const unreadBefore = (await service.unreadCount()).count;
  await service.markRead(grouped.id);
  assert.equal((await service.unreadCount()).count, unreadBefore - 1);
  checks.push('secondary member search, message pagination and deduplicated unread count');
  await service.suppressMessage(grouped.id, { mode: 'temporary', days: 7, reason: 'isolated verification' });
  assert.equal(await db.signatureRetirementSuppression.count(), 2);
  assert.equal((await db.signatureRetirementMessage.findUniqueOrThrow({ where: { id: grouped.id } })).suppressed, true);
  checks.push('atomic group suppression');
  // Real database scale fixture, distinct from live business data and from the daily-message test above.
  await admin.query(`INSERT INTO "${schema}"."SignatureRetirementDetection" (id,"detectionDate","dimensionType","tenantId","applicationId","signatureId","channelKey",carrier,"windowDays",threshold,"approvedAt",status)
    SELECT 'scale-'||n, DATE '2026-09-08','channel','t1','app1','s1','scale-'||n,'mobile',30,1,DATE '2026-01-01','healthy' FROM generate_series(1,19783) n`);
  const baseline = process.memoryUsage();
  const started = Date.now();
  const heatmap = await service.heatmap(date);
  assert.equal(heatmap.items.length, 19788);
  assert.ok(heatmap.items.every((item) => item.activityDate === '2026-09-07'));
  const after = process.memoryUsage();
  if (global.gc) global.gc();
  const afterGc = process.memoryUsage();
  assert.ok(after.rss - baseline.rss < 256 * 1024 ** 2, 'Heatmap RSS growth exceeds 256 MiB');
  checks.push('19788 PostgreSQL rows through actual heatmap service, T-1 and bounded RSS');
  const finalCount = (await admin.query('SELECT count(*)::int AS count FROM public."SmsMessageRecord"')).rows[0].count;
  assert.equal(finalCount, before);
  console.log(
    JSON.stringify({
      schema,
      checks,
      baseline,
      after,
      afterGc,
      durationMs: Date.now() - started,
      publicMessages: finalCount,
      smsCalls: 0,
      lifecycleStarted: false,
    }),
  );
} finally {
  await Promise.all(clients.map((client) => client.$disconnect()));
  // Keep the isolated schema for audit; no cleanup of existing schemas or business records.
  await admin.end();
}