import assert from 'node:assert/strict';
import { execFileSync, spawnSync } from 'node:child_process';
import fs from 'node:fs';
import os from 'node:os';
import path from 'node:path';
import test from 'node:test';

import { classifyRuntimeImpact } from '../../scripts/runtime-impact.mjs';

const root = path.resolve(import.meta.dirname, '../..');

function git(cwd, ...args) {
  return execFileSync('git', args, { cwd, encoding: 'utf8' }).trim();
}

test('runtime impact keeps affected components separate from restart scope', () => {
  assert.deepEqual(classifyRuntimeImpact(['README.md', 'workpack/STATUS.md', 'test/example.test.js']), {
    affectedComponents: [],
    restartScope: 'none',
  });
  assert.deepEqual(classifyRuntimeImpact(['scripts/clean-test-dist.mjs']), {
    affectedComponents: [],
    restartScope: 'none',
  });
  assert.deepEqual(classifyRuntimeImpact(['.tmp-tests/harbor-route-test/network.json']), {
    affectedComponents: [],
    restartScope: 'none',
  });
  assert.deepEqual(classifyRuntimeImpact(['context.md']), {
    affectedComponents: [],
    restartScope: 'none',
  });
  assert.deepEqual(classifyRuntimeImpact(['src/web/App.tsx']), {
    affectedComponents: ['control'],
    restartScope: 'control',
  });
  assert.deepEqual(classifyRuntimeImpact(['src/server/services/domainTrafficService.ts']), {
    affectedComponents: ['dataplane'],
    restartScope: 'both',
  });
  assert.deepEqual(classifyRuntimeImpact(['package-lock.json']), {
    affectedComponents: ['control', 'dataplane'],
    restartScope: 'both',
  });
});

test('every displaced regex path keeps dataplane restart coverage in JS and TS', () => {
  const legacyPaths = [
    'src/server/config',
    'src/server/dataplane',
    'src/server/gatewayRouting',
    'src/server/singbox',
    'src/server/singboxRuntime',
    'src/server/version',
    'src/server/adapters/neighbors',
    'src/server/services/connectivityDiagnosticsService',
    'src/server/services/deviceTrafficService',
    'src/server/services/devicePolicyService',
    'src/server/services/singboxSelectorService',
    'src/shared/connectivityDiagnostics',
    'src/shared/errors',
  ];
  for (const file of legacyPaths) {
    assert.equal(classifyRuntimeImpact([`${file}.js`]).restartScope, 'both', `${file}.js`);
    assert.equal(classifyRuntimeImpact([`${file}.ts`]).restartScope, 'both', `${file}.ts`);
  }
  for (const file of ['Dockerfile', 'entrypoint.sh', 'package.json', 'package-lock.json',
    'scripts/build-runtime-base.sh', '.gitea/workflows/gateway-build.yml']) {
    assert.equal(classifyRuntimeImpact([file]).restartScope, 'both', file);
  }
});

test('classifier covers current dataplane reachability without promoting its client adapter', () => {
  for (const file of ['src/server/main.js', 'src/server/main.ts']) {
    assert.deepEqual(classifyRuntimeImpact([file]), {
      affectedComponents: ['control', 'dataplane'],
      restartScope: 'both',
    }, file);
  }
  assert.deepEqual(classifyRuntimeImpact(['src/server/services/domainTrafficService.js']), {
    affectedComponents: ['dataplane'],
    restartScope: 'both',
  });
  assert.deepEqual(classifyRuntimeImpact(['src/server/services/deviceInventoryService.js']), {
    affectedComponents: ['control', 'dataplane'],
    restartScope: 'both',
  });
  assert.deepEqual(classifyRuntimeImpact(['src/server/services/singboxSelectorService.ts']), {
    affectedComponents: ['control', 'dataplane'],
    restartScope: 'both',
  });
  assert.deepEqual(classifyRuntimeImpact(['src/server/dataplaneClient.ts']), {
    affectedComponents: ['control'],
    restartScope: 'control',
  });
});

test('native traffic contracts and collector restart both Gateway processes', () => {
  for (const file of [
    'buf.gen.yaml',
    'proto/sing-box/v1.14.0-rc.5/daemon/started_service.proto',
    'src/server/gatewayNativeRuntime.ts',
    'src/server/generated/daemon/started_service_pb.ts',
    'src/server/services/liveTrafficService.ts',
    'src/shared/liveTraffic.ts',
  ]) {
    assert.deepEqual(classifyRuntimeImpact([file]), {
      affectedComponents: ['control', 'dataplane'],
      restartScope: 'both',
    }, file);
  }
  for (const file of [
    'tools/test-singbox-client-rc.sh',
    'tools/test-singbox-gateway-native-traffic.sh',
    'tools/test-singbox-native-traffic.sh',
  ]) {
    assert.deepEqual(classifyRuntimeImpact([file]), {
      affectedComponents: [],
      restartScope: 'none',
    }, file);
  }
});

test('version bumps do not promote a control-only change to a dataplane restart', () => {
  assert.deepEqual(classifyRuntimeImpact(['src/web/App.tsx', 'src/shared/versions.ts']), {
    affectedComponents: ['control'],
    restartScope: 'control',
  });
});

test('release-critical inputs restart both and unknown paths fail closed', () => {
  for (const file of [
    '.dockerignore',
    '.gitea/workflows/another.yml',
    'docker-compose.gateway.yml',
    'scripts/deploy-gateway.sh',
  ]) {
    assert.deepEqual(classifyRuntimeImpact([file]), {
      affectedComponents: ['control', 'dataplane'],
      restartScope: 'both',
    }, file);
  }
  assert.throws(() => classifyRuntimeImpact(['src/new-owner.ts']), /Unclassified path/);
  assert.throws(() => classifyRuntimeImpact(['scripts/new-runtime.sh']), /Unclassified path/);
});

test('every repository path has an explicit ownership class', () => {
  const tracked = execFileSync(
    'git',
    ['ls-files', '--cached', '--others', '--exclude-standard'],
    { cwd: root, encoding: 'utf8' },
  )
    .trim()
    .split('\n');
  assert.doesNotThrow(() => classifyRuntimeImpact(tracked));
});

test('workflow CLI reads changed paths from stdin', () => {
  const result = spawnSync(
    process.execPath,
    ['scripts/runtime-impact.mjs', '--stdin'],
    { cwd: root, input: 'src/web/App.tsx\nsrc/server/dataplane.ts\n', encoding: 'utf8' },
  );
  assert.equal(result.status, 0, result.stderr);
  assert.equal(result.stdout.trim(), 'affected-components=control+dataplane\nrestart-scope=both');
});

test('push range keeps a dataplane change from an earlier commit', (t) => {
  const repository = fs.mkdtempSync(path.join(os.tmpdir(), 'harbor-impact-'));
  t.after(() => fs.rmSync(repository, { recursive: true, force: true }));
  git(repository, 'init', '-q');
  fs.writeFileSync(path.join(repository, 'README.md'), 'base\n');
  git(repository, 'add', '.');
  git(repository, '-c', 'user.name=Harbor', '-c', 'user.email=harbor@example.test', 'commit', '-qm', 'base');
  const before = git(repository, 'rev-parse', 'HEAD');

  const dataplane = path.join(repository, 'src/server/services/domainTrafficService.ts');
  fs.mkdirSync(path.dirname(dataplane), { recursive: true });
  fs.writeFileSync(dataplane, 'export {};\n');
  git(repository, 'add', '.');
  git(repository, '-c', 'user.name=Harbor', '-c', 'user.email=harbor@example.test', 'commit', '-qm', 'dataplane');
  fs.writeFileSync(path.join(repository, 'README.md'), 'tip docs change\n');
  git(repository, 'add', '.');
  git(repository, '-c', 'user.name=Harbor', '-c', 'user.email=harbor@example.test', 'commit', '-qm', 'tip');

  const changed = git(repository, 'diff', '--name-only', before, 'HEAD').split('\n');
  assert.deepEqual(classifyRuntimeImpact(changed), {
    affectedComponents: ['dataplane'],
    restartScope: 'both',
  });
});

test('rename range keeps ownership of the displaced dataplane path', (t) => {
  const repository = fs.mkdtempSync(path.join(os.tmpdir(), 'harbor-impact-rename-'));
  t.after(() => fs.rmSync(repository, { recursive: true, force: true }));
  git(repository, 'init', '-q');
  const oldPath = path.join(repository, 'src/server/services/domainTrafficService.ts');
  fs.mkdirSync(path.dirname(oldPath), { recursive: true });
  fs.writeFileSync(oldPath, 'export function dataplaneOwned() { return true; }\n');
  git(repository, 'add', '.');
  git(repository, '-c', 'user.name=Harbor', '-c', 'user.email=harbor@example.test', 'commit', '-qm', 'base');
  const before = git(repository, 'rev-parse', 'HEAD');

  fs.renameSync(oldPath, path.join(path.dirname(oldPath), 'newService.ts'));
  git(repository, 'add', '-A');
  git(repository, '-c', 'user.name=Harbor', '-c', 'user.email=harbor@example.test', 'commit', '-qm', 'rename');
  const changed = git(repository, 'diff', '--no-renames', '--name-only', before, 'HEAD').split('\n');

  assert.deepEqual(classifyRuntimeImpact(changed), {
    affectedComponents: ['control', 'dataplane'],
    restartScope: 'both',
  });
});