sounisi5011/readme-generator

import { cac } from 'cac';

import { main } from './main';
import { omitPackageScopeName } from './template-filters/omitPackageScope';
import { isObject } from './utils';

// eslint-disable-next-line @typescript-eslint/no-var-requires
const PKG: unknown = require('../package.json');

let pkgName: string | undefined;
let pkgVersion: string | undefined;
let pkgDescription = '';
if (isObject(PKG)) {
    if (typeof PKG.name === 'string') pkgName = PKG.name;
    if (typeof PKG.version === 'string') pkgVersion = PKG.version;
    if (typeof PKG.description === 'string') pkgDescription = PKG.description;
}

const cli = cac(omitPackageScopeName(pkgName));

if (pkgVersion) cli.version(pkgVersion, '-V, -v, --version');
cli.help(
    pkgDescription
        ? sections => {
            sections.splice(1, 0, { body: pkgDescription });
        }
        : undefined,
);

cli.option('--template <file>', 'Nunjucks template file path', { default: 'readme-template.njk' });
cli.option('--test', 'Test if README.md file is overwritten');

if (cli.commands.length <= 0) cli.usage('[options]');

const { options } = cli.parse();

if (!options.version && !options.help) {
    const unknownOptions = Object.keys(options)
        .filter(name => name !== '--' && !cli.globalCommand.hasOption(name));

    if (unknownOptions.length > 0) {
        process.exitCode = 1;
        console.error(
            `unknown ${unknownOptions.length > 1 ? 'options' : 'option'}: ${
                unknownOptions
                    .map(name => /^[^-]$/.test(name) ? `-${name}` : `--${name}`)
                    .join(' ')
            }\nTry \`${cli.name} --help\` for valid options.`,
        );
    } else {
        main({
            template: options.template,
            test: options.test,
        }).catch(error => {
            process.exitCode = 1;
            console.error(error instanceof Error ? error.message : error);
        });
    }
}