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/**

* @license

* Copyright Google LLC All Rights Reserved.

*

* Use of this source code is governed by an MIT-style license that can be

* found in the LICENSE file at https://angular.dev/license

*/

import assert from 'node:assert';

import * as child_process from 'node:child_process';

import { copyFile, readFile, rm, writeFile } from 'node:fs/promises';

import * as path from 'node:path';

import { pathToFileURL } from 'node:url';

import build from './build.mts';

import { packages } from './packages.mts';

export interface CreateOptions extends Record<string, unknown> {

_: string[];

}

const __dirname = import.meta.dirname;

async function _exec(command: string, args: string[], opts: { cwd?: string }) {

const { status, error, stderr, stdout } = child_process.spawnSync(command, args, { ...opts });

if (status != 0) {

console.error(`Command failed: ${command} ${args.map((x) => JSON.stringify(x)).join(', ')}`);

if (error) {

console.error('Error: ' + (error ? error.message : 'undefined'));

} else {

console.error(`STDERR:\n${stderr}`);

}

throw error;

}

return { stdout };

}

export default async function (args: CreateOptions, cwd: string): Promise<number> {

const { _, ...otherArgOptions } = args;

const projectName = _[0];

assert(projectName, 'Project name must be provided.');

const ngNewAdditionalOptions = Object.entries(otherArgOptions).map(

([key, value]) => `--${key}=${value}`,

);

const oldCwd = process.cwd();

console.info('Building...');

const buildResult = await build({ local: true });

const cliBuild = buildResult.find(({ name }) => name === 'angular/cli');

assert(cliBuild);

process.chdir(cwd);

// The below is needed as NPX does not guarantee that the updated version is used unless the file name changes.

const newTarballName = cliBuild.tarPath.replace('.tgz', '-' + Date.now() + '.tgz');

await copyFile(cliBuild.tarPath, newTarballName);

console.info('Creating project...');

try {

await _exec(

'npx',

[

'--yes',

pathToFileURL(newTarballName).toString(),

'new',

projectName,

'--skip-install',

'--skip-git',

'--no-interactive',

...ngNewAdditionalOptions,

],

{ cwd },

);

} finally {

await rm(newTarballName, { maxRetries: 3 });

}

console.info('Updating package.json...');

const packageJsonPath = path.join(projectName, 'package.json');

const packageJson = JSON.parse(await readFile(packageJsonPath, 'utf-8'));

packageJson['dependencies'] ??= {};

packageJson['devDependencies'] ??= {};

packageJson['overrides'] ??= {};

// Set the dependencies to the new build we just used.

for (const packageName of packages.map(({ name }) => name)) {

const tar = path.join(__dirname, '../dist', packageName.replace(/\/|@/g, '_') + '.tgz');

if (packageName in packageJson['dependencies']) {

packageJson['dependencies'][packageName] = tar;

} else if (packageName in packageJson['devDependencies']) {

packageJson['devDependencies'][packageName] = tar;

} else {

packageJson['overrides'][packageName] = tar;

}

}

await writeFile(packageJsonPath, JSON.stringify(packageJson, null, 2), 'utf-8');

console.info('Installing npm packages...');

await _exec('npm', ['install'], { cwd: path.join(cwd, projectName) });

process.chdir(oldCwd);

return 0;

}