import assert from 'node:assert/strict';
import { createRequire } from 'node:module';
import { execFileSync } from 'node:child_process';
import Module from 'node:module';
import { randomUUID } from 'node:crypto';
const require = createRequire(new URL('../../api/package.json', import.meta.url));
const url = new URL(process.env.SIGNATURE_TEST_DATABASE_URL || '');
assert(url.hostname === '127.0.0.1' && url.pathname.startsWith('/cmpp_qa_signature_'));
process.env.DATABASE_URL = url.toString();
process.env.NODE_ENV = 'test';
require('reflect-metadata');
const { PrismaService } = require('./dist/prisma/prisma.service'),
  { Prisma } = require('@prisma/client');
const { activityCounts } = require('./dist/signature-analytics/analytics-aggregate');
const { todayKey, addDays, startOfDay } = require('./dist/signature-analytics/analytics-date');
const oldSource = execFileSync(
  'git',
  ['show', '4eb7b16d122da14f921093716d4ca1ed390d9e4c:api/src/signature-retirement/signature-retirement.service.ts'],
  { encoding: 'utf8' },
);
const compiled = require('typescript').transpileModule(oldSource, {
  compilerOptions: { module: 1, target: 9, experimentalDecorators: true, emitDecoratorMetadata: true },
}).outputText;
const oldModule = new Module(require.resolve('./dist/signature-retirement/signature-retirement.service'));
oldModule.filename = require.resolve('./dist/signature-retirement/signature-retirement.service');
oldModule.paths = require.resolve.paths('@prisma/client');
oldModule._compile(compiled, oldModule.filename);
const db = new PrismaService(),
  prefix = 'bench' + randomUUID().slice(0, 8),
  N = 300,
  K = 100,
  D = addDays(todayKey(), -1),
  start = startOfDay(D),
  end = startOfDay(todayKey());
let last;
const traced = new Proxy(db, {
  get(t, k) {
    if (k === '$queryRaw')
      return async (q) => {
        last = q;
        return db.$queryRaw(q);
      };
    const v = t[k];
    return typeof v === 'function' ? v.bind(t) : v;
  },
});
try {
  const tenant = await db.tenant.create({ data: { name: prefix, code: prefix } }),
    app = await db.smsApplication.create({
      data: {
        tenantId: tenant.id,
        name: prefix,
        cmppAccount: prefix,
        cmppEnterpriseCode: '000001',
        secretHash: 'isolated',
        interfaceEnabled: false,
      },
    }),
    channel = await db.smsChannel.create({
      data: {
        name: prefix,
        code: prefix,
        srcId: '1069',
        gatewayHost: '127.0.0.1',
        gatewayPort: 1,
        account: 'isolated',
        passwordCipher: 'not-a-secret',
        carriers: ['mobile'],
        status: 'disabled',
      },
    });
  await db.$executeRaw`INSERT INTO "SmsSignature"(id,"tenantId","applicationId",name,"updatedAt") SELECT ${prefix}||n,${tenant.id},${app.id},${prefix}||n,NOW() FROM generate_series(1,${N}) n`;
  await db.$executeRaw`INSERT INTO "SmsMessageRecord"(id,"messageId","tenantId","applicationId","signatureId","phoneNumber",content,carrier,"queuedAt","billingUnits","updatedAt") SELECT ${prefix}||n||'-'||k,${prefix}||n||'-'||k,${tenant.id},${app.id},${prefix}||n,'13800000200','isolated','mobile',${start},1,NOW() FROM generate_series(1,${N}) n CROSS JOIN generate_series(1,${K}) k`;
  await db.$executeRaw`INSERT INTO "SmsSubmitRecord"(id,"messageRecordId","submitId","channelId","submitStatus","submittedAt","createdAt","updatedAt") SELECT id,id,id,${channel.id},'accepted',${start},${start},NOW() FROM "SmsMessageRecord" WHERE "tenantId"=${tenant.id}`;
  await db.$executeRawUnsafe('ANALYZE "SmsMessageRecord"');
  await db.$executeRawUnsafe('ANALYZE "SmsSubmitRecord"');
  const dims = Array.from({ length: N }, (_, i) =>
    ['enterprise', 'channel'].map((type) => ({
      dimensionKey: JSON.stringify([type, prefix + (i + 1)]),
      dimensionType: type,
      tenantId: tenant.id,
      applicationId: app.id,
      signatureId: prefix + (i + 1),
      channelKey: type === 'channel' ? channel.id : '',
      channelId: type === 'channel' ? channel.id : null,
      carrier: 'mobile',
      approvedAt: startOfDay(addDays(D, -60)),
      signatureName: prefix + (i + 1),
      tenantName: prefix,
      applicationName: prefix,
      channelName: prefix,
    })),
  ).flat();
  const old = new oldModule.exports.SignatureRetirementService(traced);
  const before = performance.now();
  for (const d of dims) {
    const r = await old.activityCounts(d, start, end);
    assert.equal(r.acceptedBusinessCount, K);
  }
  const oldMs = performance.now() - before;
  const sampleOld = last;
  const now = performance.now(),
    counts = await activityCounts(traced, dims, D),
    newMs = performance.now() - now,
    sampleNew = last;
  for (const d of dims) assert.equal(counts.get(d.dimensionKey).acceptedBusinessCount, K);
  const explain = async (q) =>
    (await db.$queryRaw(Prisma.sql`EXPLAIN (ANALYZE,BUFFERS,FORMAT JSON) ${q}`))[0]['QUERY PLAN'][0];
  const oldPlan = await explain(sampleOld),
    newPlan = await explain(sampleNew);
  const scanRows = (p) => {
    let sum = 0;
    const walk = (n) => {
      if (
        n['Node Type']?.includes('Scan') &&
        ['SmsSubmitRecord', 'SmsMessageRecord', 'SmsReceiptRecord', 'SmsMessageSegmentAudit'].includes(
          n['Relation Name'],
        )
      )
        sum += (n['Actual Rows'] + (n['Rows Removed by Filter'] || 0)) * (n['Actual Loops'] || 0);
      for (const c of n.Plans || []) walk(c);
    };
    walk(p.Plan);
    return sum;
  };
  console.log(
    JSON.stringify({
      messages: N * K,
      dimensions: dims.length,
      oldMs,
      newMs,
      reduction: 1 - newMs / oldMs,
      oldSampleRows: scanRows(oldPlan),
      estimatedOldRows: scanRows(oldPlan) * dims.length,
      newRows: scanRows(newPlan),
      note: 'warm cache, per-dimension sample extrapolation; not production CPU or whole job capacity',
      oldPlan,
      newPlan,
    }),
  );
} finally {
  await db.onModuleDestroy();
}