#!/usr/bin/env node
// SPDX-License-Identifier: MIT
// Generated by metaharness — the `wifi-densepose-sar-harness` CLI entry point.
//
// This is plain ESM JavaScript on purpose: it runs as-is via `npx wifi-densepose-sar-harness`
// with NO build step. `npm run build` (tsc) is only needed if you extend the
// TypeScript in src/. The published package ships this file directly (see the
// "bin" + "files" fields in package.json), so `npx wifi-densepose-sar-harness` works the moment
// `npm install` has resolved @metaharness/kernel + @metaharness/host-claude-code.

import { loadKernel } from '@metaharness/kernel';
import adapter from '@metaharness/host-claude-code';

const HARNESS_NAME = 'wifi-densepose-sar-harness';

/** `wifi-densepose-sar-harness init` — boot the kernel + host adapter and report status. */
async function init() {
  const kernel = await loadKernel();
  const info = kernel.kernelInfo();
  console.log(`${HARNESS_NAME} — kernel ${info.version} (${kernel.backend})`);
  console.log(`Host adapter: ${adapter.name}`);
  console.log(`Run \`${HARNESS_NAME} doctor\` to verify the install.`);
  return 0;
}

/**
 * `wifi-densepose-sar-harness route <e0> <e1> <e2> <e3>` — route a 4-axis
 * task embedding to the cost-optimal model tier via @metaharness/router.
 * Needs `npm run build` first (src/router.ts is TypeScript; this command
 * imports the compiled dist/ output so the base CLI stays build-free).
 */
async function route(args) {
  const embedding = args.map(Number);
  if (embedding.length !== 4 || embedding.some((n) => Number.isNaN(n))) {
    console.error('Usage: wifi-densepose-sar-harness route <physicsExplanation> <codeReview> <numericalDebugging> <docWriting>  (four 0..1 numbers)');
    return 2;
  }
  let routeSarQuery;
  try {
    ({ routeSarQuery } = await import('../dist/router.js'));
  } catch (err) {
    console.error(`route: dist/router.js not found — run \`npm run build\` first. (${err.message})`);
    return 1;
  }
  const pick = routeSarQuery(embedding);
  console.log(`route -> ${pick.id} (predicted quality ${pick.predictedQuality.toFixed(3)}, $${pick.costPerMTok}/MTok, met bar: ${pick.metBar})`);
  return 0;
}

/**
 * `wifi-densepose-sar-harness flywheel [generations]` — run the SYNTHETIC
 * @metaharness/flywheel demo (see src/flywheel.ts) and print the lift curve
 * + an independent replay-bundle verification. Needs `npm run build` first.
 */
async function flywheel(args) {
  const generations = args[0] ? Number(args[0]) : 3;
  if (Number.isNaN(generations) || generations < 1) {
    console.error('Usage: wifi-densepose-sar-harness flywheel [generations>=1]');
    return 2;
  }
  let runSarFlywheelDemo, verifySarFlywheelDemo;
  try {
    ({ runSarFlywheelDemo, verifySarFlywheelDemo } = await import('../dist/flywheel.js'));
  } catch (err) {
    console.error(`flywheel: dist/flywheel.js not found — run \`npm run build\` first. (${err.message})`);
    return 1;
  }
  console.log(`Running ${generations}-generation flywheel demo (dataSource: SYNTHETIC — see src/flywheel.ts)...`);
  const result = await runSarFlywheelDemo(generations);
  for (const point of result.liftCurve) {
    console.log(`  gen ${point.generation}: primary=${point.primary.toFixed(3)} delta=${point.delta.toFixed(3)} anchor=${point.anchor ?? 'n/a'}`);
  }
  const verdict = verifySarFlywheelDemo(result);
  console.log(`generations run: ${result.generationsRun} · promotions: ${result.promotions.length} · replay verified: ${verdict.pass}`);
  return verdict.pass ? 0 : 1;
}

/** `wifi-densepose-sar-harness doctor` — verify the install end-to-end (kernel + host resolve). */
async function doctor() {
  const kernel = await loadKernel();
  const info = kernel.kernelInfo();
  const checks = [
    ['kernel loads', !!kernel],
    ['kernel reports a version', typeof info.version === 'string' && info.version.length > 0],
    ['kernel backend is native|wasm|js', ['native', 'wasm', 'js'].includes(kernel.backend)],
    ['host adapter has a name', typeof adapter?.name === 'string' && adapter.name.length > 0],
  ];
  let ok = true;
  for (const [label, pass] of checks) {
    console.log(`${pass ? 'PASS' : 'FAIL'} ${label}`);
    if (!pass) ok = false;
  }
  console.log(
    ok
      ? `\n${HARNESS_NAME}: all checks passed (kernel ${info.version}, ${kernel.backend} backend, host ${adapter.name})`
      : `\n${HARNESS_NAME}: doctor found problems`,
  );
  return ok ? 0 : 1;
}

/**
 * Dispatch one CLI invocation. Exported (not just run on import) so a test can
 * drive it without spawning a subprocess. Returns the intended exit code.
 */
export async function run(argv) {
  const cmd = argv[0] ?? 'init';
  switch (cmd) {
    case 'init':
      return init();
    case 'doctor':
      return doctor();
    case 'route':
      return route(argv.slice(1));
    case 'flywheel':
      return flywheel(argv.slice(1));
    case '--version':
    case '-v': {
      const kernel = await loadKernel();
      console.log(kernel.version());
      return 0;
    }
    case '--help':
    case '-h':
      console.log(`Usage: ${HARNESS_NAME} <command>\n\n  init       boot the kernel + host adapter (default)\n  doctor     verify the install end-to-end\n  route      route a 4-axis task embedding to a cost-optimal model tier (needs \`npm run build\`)\n  flywheel   run the SYNTHETIC self-improvement demo loop (needs \`npm run build\`)\n  --version  print the kernel version`);
      return 0;
    default:
      console.error(`Unknown command: ${cmd}. Try \`${HARNESS_NAME} --help\`.`);
      return 2;
  }
}

// CLI guard: execute only when invoked directly (not when imported by a test).
// npm's bin shims pass a NON-normalized argv[1] (e.g. ".../.bin/../<pkg>/bin/cli.js"
// on Windows) and may differ in case, so realpath BOTH sides before comparing —
// a naive string === misses the npx/shim path and the CLI silently no-ops.
import { fileURLToPath } from 'node:url';
import { realpathSync } from 'node:fs';
import { argv } from 'node:process';
const invokedDirectly = (() => {
  if (!argv[1]) return false;
  try {
    const a = realpathSync(argv[1]);
    const b = realpathSync(fileURLToPath(import.meta.url));
    return process.platform === 'win32' ? a.toLowerCase() === b.toLowerCase() : a === b;
  } catch {
    return false;
  }
})();
if (invokedDirectly) {
  run(argv.slice(2))
    .then((code) => process.exit(code))
    .catch((err) => {
      console.error(err);
      process.exit(1);
    });
}