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

import {
  collectNpmWorkspaceErrors,
  REQUIRED_PACKAGE_MANAGER,
  REQUIRED_WORKSPACES,
} from './check-npm-workspaces.mjs';

const fixtureDirectories = [];

const workspaceNames = {
  'apps/admin-web': '@genarrative/admin-web',
  'apps/ai-game-creator-shell': '@genarrative/ai-game-creator-shell',
  'apps/desktop-shell': '@genarrative/desktop-shell',
  'apps/mobile-shell': '@genarrative/mobile-shell',
  'apps/preview-deployer-web': '@genarrative/preview-deployer-web',
  'packages/image-canvas-core': '@genarrative/image-canvas-core',
  'packages/image-canvas-react': '@genarrative/image-canvas-react',
  'packages/shared': '@genarrative/shared',
  'tools/spine-json-export-validator':
    '@genarrative/spine-json-export-validator',
};

const localDependencies = {
  'apps/admin-web': { '@genarrative/shared': '0.1.0' },
  'apps/ai-game-creator-shell': {
    '@genarrative/image-canvas-core': '0.1.0',
    '@genarrative/image-canvas-react': '0.1.0',
    '@genarrative/shared': '0.1.0',
  },
  'apps/mobile-shell': { '@genarrative/shared': '0.1.0' },
  'packages/image-canvas-react': { '@genarrative/image-canvas-core': '0.1.0' },
};

afterEach(() => {
  for (const fixtureDirectory of fixtureDirectories.splice(0)) {
    fs.rmSync(fixtureDirectory, { recursive: true, force: true });
  }
});

function writeJson(rootDir, relativePath, value) {
  const absolutePath = path.join(rootDir, relativePath);
  fs.mkdirSync(path.dirname(absolutePath), { recursive: true });
  fs.writeFileSync(absolutePath, `${JSON.stringify(value, null, 2)}\n`);
}

function createValidFixture() {
  const rootDir = fs.mkdtempSync(
    path.join(os.tmpdir(), 'genarrative-npm-workspaces-'),
  );
  fixtureDirectories.push(rootDir);

  writeJson(rootDir, 'package.json', {
    name: 'fixture-root',
    private: true,
    version: '0.0.0',
    packageManager: REQUIRED_PACKAGE_MANAGER,
    workspaces: REQUIRED_WORKSPACES,
    dependencies: {
      '@genarrative/image-canvas-core': '0.1.0',
      '@genarrative/image-canvas-react': '0.1.0',
      '@genarrative/shared': '0.1.0',
    },
  });

  const packages = {
    '': {
      name: 'fixture-root',
      version: '0.0.0',
      workspaces: REQUIRED_WORKSPACES,
    },
  };
  for (const workspacePath of REQUIRED_WORKSPACES) {
    const manifest = {
      name: workspaceNames[workspacePath],
      private: true,
      version:
        workspacePath === 'apps/ai-game-creator-shell' ? '0.1.12' : '0.1.0',
      dependencies: localDependencies[workspacePath],
    };
    writeJson(rootDir, `${workspacePath}/package.json`, manifest);
    packages[workspacePath] = manifest;
    packages[`node_modules/${manifest.name}`] = {
      resolved: workspacePath,
      link: true,
    };
  }
  writeJson(rootDir, 'package-lock.json', {
    name: 'fixture-root',
    version: '0.0.0',
    lockfileVersion: 3,
    requires: true,
    packages,
  });

  return rootDir;
}

function readJson(rootDir, relativePath) {
  return JSON.parse(fs.readFileSync(path.join(rootDir, relativePath), 'utf8'));
}

test('accepts the fixed npm workspace topology and root lock links', () => {
  const rootDir = createValidFixture();
  assert.deepEqual(collectNpmWorkspaceErrors(rootDir), []);
});

test('rejects workspace protocol and non-exact local package versions', () => {
  const rootDir = createValidFixture();
  const manifestPath = 'apps/admin-web/package.json';
  const manifest = readJson(rootDir, manifestPath);
  manifest.dependencies['@genarrative/shared'] = 'workspace:*';
  writeJson(rootDir, manifestPath, manifest);

  const errors = collectNpmWorkspaceErrors(rootDir).join('\n');
  assert.match(errors, /must not use the unsupported workspace: protocol/u);
  assert.match(errors, /must use exact version 0\.1\.0/u);
});

test('rejects missing workspace entries and links in the root lock', () => {
  const rootDir = createValidFixture();
  const lockfile = readJson(rootDir, 'package-lock.json');
  delete lockfile.packages['apps/mobile-shell'];
  delete lockfile.packages['node_modules/@genarrative/mobile-shell'];
  writeJson(rootDir, 'package-lock.json', lockfile);

  const errors = collectNpmWorkspaceErrors(rootDir).join('\n');
  assert.match(errors, /packages\["apps\/mobile-shell"\]/u);
  assert.match(errors, /node_modules\/@genarrative\/mobile-shell/u);
});

test('rejects nested package locks and shrinkwrap files', () => {
  const rootDir = createValidFixture();
  writeJson(rootDir, 'apps/admin-web/package-lock.json', {});
  writeJson(rootDir, 'packages/shared/fixtures/npm-shrinkwrap.json', {});

  const errors = collectNpmWorkspaceErrors(rootDir).join('\n');
  assert.match(errors, /apps\/admin-web\/package-lock\.json/u);
  assert.match(errors, /packages\/shared\/fixtures\/npm-shrinkwrap\.json/u);
});

test('rejects package manager and explicit workspace list drift', () => {
  const rootDir = createValidFixture();
  const rootPackage = readJson(rootDir, 'package.json');
  rootPackage.packageManager = 'npm@11.0.0';
  rootPackage.workspaces = ['apps/*', 'packages/*'];
  writeJson(rootDir, 'package.json', rootPackage);

  const errors = collectNpmWorkspaceErrors(rootDir).join('\n');
  assert.match(errors, /packageManager must be npm@10\.9\.7/u);
  assert.match(errors, /workspaces must be the explicit ordered list/u);
});

test('rejects test and build aliases tied to a nested workspace install', () => {
  const rootDir = createValidFixture();
  fs.writeFileSync(
    path.join(rootDir, 'vitest.config.ts'),
    "const cubone = 'apps/ai-game-creator-shell/node_modules/@cubone/react-file-manager';\n",
  );

  const errors = collectNpmWorkspaceErrors(rootDir).join('\n');
  assert.match(
    errors,
    /vitest\.config\.ts: resolve dependencies from the workspace manifest/u,
  );
});