import { describe, expect, it } from 'vitest';

import { checkLockfilePolicy } from './dependency-policy.mjs';
import { rebuildArgs, validateRebuildEntries, verify } from './rebuild-native.mjs';

const registryOrigin = 'https://registry.npmjs.org/';

describe('dependency policy adversarial cases', () => {
  it('rejects a non-link package when resolved and integrity are both missing', () => {
    const violations = checkLockfilePolicy(
      {
        lockfileVersion: 3,
        packages: {
          'node_modules/evil': {
            version: '1.0.0',
            hasInstallScript: true,
          },
        },
      },
      ['node_modules/evil'],
      registryOrigin,
    );

    expect(violations).toContainEqual({
      code: 'missing-resolved',
      name: 'node_modules/evil',
    });
    expect(violations).toContainEqual({
      code: 'missing-integrity',
      name: 'node_modules/evil',
    });
  });

  it('rejects lookalike registry hostnames', () => {
    const violations = checkLockfilePolicy(
      {
        lockfileVersion: 3,
        packages: {
          'node_modules/evil': {
            version: '1.0.0',
            resolved: 'https://registry.npmjs.org.evil.example/evil.tgz',
            integrity: 'sha512-example',
          },
        },
      },
      [],
      registryOrigin,
    );

    expect(violations).toContainEqual({
      code: 'non-registry-url',
      name: 'node_modules/evil',
    });
  });

  // このテストは名前で path / name / version / integrity の 4 つを縛ると言っている。
  // ところが実際に起こしていたのは version の食い違いだけで、integrity 照合を
  // 削っても 35 件すべて緑だった（PR #1074 のレビュー M8）。4 つを別々に起こす。
  const soundLockfile = (over = {}) => ({
    lockfileVersion: 3,
    packages: {
      'node_modules/native': {
        version: '1.0.0',
        resolved: 'https://registry.npmjs.org/native/-/native-1.0.0.tgz',
        integrity: 'sha512-approved',
        hasInstallScript: true,
        ...over,
      },
    },
  });
  const soundApproval = (over = {}) => [{
    path: 'node_modules/native',
    name: 'native',
    version: '1.0.0',
    integrity: 'sha512-approved',
    verifier: 'better-sqlite3-memory-db',
    ...over,
  }];

  it('accepts an approval that matches the lockfile on every field', () => {
    expect(validateRebuildEntries(soundLockfile(), soundApproval())).toHaveLength(1);
  });

  it('rejects an integrity mismatch even when the version agrees', () => {
    expect(() => validateRebuildEntries(soundLockfile({ integrity: 'sha512-swapped' }), soundApproval()))
      .toThrow(/integrity mismatch/i);
  });

  it('rejects a target the lockfile says has no install script', () => {
    // 許可一覧に「script を持たない依存」を書けると、rebuild だけが走る経路になる
    expect(() => validateRebuildEntries(soundLockfile({ hasInstallScript: false }), soundApproval()))
      .toThrow(/no install script/i);
  });

  it('rejects a path whose last node_modules segment is not the approved name', () => {
    // 経路の取り出しは lastIndexOf でなければならない。indexOf に変えると
    // node_modules/a/node_modules/b が "a/node_modules/b" になり、
    // 名前の食い違いを見逃す
    expect(() => validateRebuildEntries(
      {
        lockfileVersion: 3,
        packages: {
          'node_modules/outer/node_modules/native': {
            version: '1.0.0',
            resolved: 'https://registry.npmjs.org/native/-/native-1.0.0.tgz',
            integrity: 'sha512-approved',
            hasInstallScript: true,
          },
        },
      },
      soundApproval({ path: 'node_modules/outer/node_modules/native', name: 'outer' }),
    )).toThrow(/name mismatch/i);
  });

  it('accepts a nested path when the approved name matches its last segment', () => {
    expect(validateRebuildEntries(
      {
        lockfileVersion: 3,
        packages: {
          'node_modules/outer/node_modules/native': {
            version: '1.0.0',
            resolved: 'https://registry.npmjs.org/native/-/native-1.0.0.tgz',
            integrity: 'sha512-approved',
            hasInstallScript: true,
          },
        },
      },
      soundApproval({ path: 'node_modules/outer/node_modules/native' }),
    )).toHaveLength(1);
  });

  it('refuses a verifier it does not know, instead of silently skipping', () => {
    // verify を即 return にしても 35 件すべて緑だった（レビュー M7）。
    // 「実際にデータベースを開いて確かめる」が丸ごと消えても誰も気づかない状態。
    expect(() => verify('no-such-verifier')).toThrow(/unsupported native rebuild verifier/i);
  });

  it('actually opens a database for the verifier this repository uses', () => {
    // 中身が消えたら（即 return になったら）ここが空振りになるので、
    // 検証が本当に走ったことを、走った先の失敗で見る
    expect(() => verify('better-sqlite3-memory-db')).not.toThrow();
  });

  it('binds native rebuild permission to path, name, version, and integrity', () => {
    const lockfile = {
      lockfileVersion: 3,
      packages: {
        'node_modules/native': {
          version: '2.0.0',
          resolved: 'https://registry.npmjs.org/native/-/native-2.0.0.tgz',
          integrity: 'sha512-new',
          hasInstallScript: true,
        },
      },
    };
    const approved = [{
      path: 'node_modules/native',
      name: 'native',
      version: '1.0.0',
      integrity: 'sha512-approved',
      verifier: 'better-sqlite3-memory-db',
    }];

    expect(() => validateRebuildEntries(lockfile, approved)).toThrow(/version mismatch/i);
  });
});

describe('how npm rebuild is invoked', () => {
  // 引数の並びに意味がある箇所。PR #1074 のレビューが、`--` を消しても
  // 35 件すべて緑だったと報告した（M6）。
  it('separates the package name from flags with --', () => {
    const args = rebuildArgs('better-sqlite3');
    expect(args[args.length - 2]).toBe('--');
    expect(args[args.length - 1]).toBe('better-sqlite3');
  });

  it('builds from source instead of downloading a prebuilt binary', () => {
    // 配布物を取ってこないぶん安全側。消すと取得物が 1 つ増える
    expect(rebuildArgs('better-sqlite3')).toContain('--build-from-source');
  });
});