import path from 'path';
import fs from 'fs-extra';

import { NPMExecutor } from '@squeebot/core/lib/npm';

import { defaultEnvironment } from '../default/environment.default';
import { gitignore } from '../default/gitignore.default';
import { tsConfig } from '../default/tsconfig.default';
import { REPOSITORY_SCHEMA } from './constants';

/**
 * Create a new repository, complete with typescript and git.
 * @param name Repository name
 * @param location Repository path
 * @param typescript Use typescript
 */
export async function newRepository(
  name: string,
  location?: string,
  typescript = true): Promise<void> {
  if (!name) {
    throw new Error('Repository needs a name!');
  }

  if (!location) {
    location = name;
  }

  location = path.resolve(process.cwd(), location);
  console.log('Creating a new repository development environment at', location);

  await fs.ensureDir(location);
  const env = defaultEnvironment(location);

  console.log('Creating package.json and installing base requirements');
  const executor = new NPMExecutor(env, '@squeebot/core');
  await executor.loadPackageFile();

  let gitIgnore = gitignore + '';

  if (typescript) {
    console.log('Installing TypeScript support');
    await executor.installPackage('typescript');
    await fs.writeJson(path.join(location, 'tsconfig.json'), tsConfig);
    gitIgnore += '\n*.js';
    gitIgnore += '\n!.eslintrc.js';
    gitIgnore += '\n*.d.ts';
    gitIgnore += '\n*.tsbuildinfo';
    gitIgnore += '\n';

    console.log('Adding TypeScript scripts to package.json');
    const pkgjson = path.join(location, 'package.json');
    const contents = await fs.readJson(pkgjson);
    contents.scripts = {
      build: 'tsc',
      watch: 'tsc -w',
    };
    await fs.writeJson(pkgjson, contents, { spaces: 2 });
  }

  console.log('Creating .gitignore');
  await fs.writeFile(path.join(location, '.gitignore'), gitIgnore);

  console.log('Writing build metadata');
  await fs.writeJson(path.join(location, 'squeebot.repo.json'), {
    name,
    plugins: [],
    typescript,
    $schema: REPOSITORY_SCHEMA,
  }, { spaces: 2 });

  console.log('\nDone! Your repository "%s" lives at:', name, location);
}