/**
 * @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.io/license
 */

import {chain, noop, Rule, Tree} from '@angular-devkit/schematics';
import {
  addModuleImportToModule,
  buildComponent,
  findModuleFromOptions,
} from '@angular/cdk/schematics';
import {Schema} from './schema';

/**
 * Scaffolds a new tree component.
 * Internally it bootstraps the base component schematic
 */
export default function(options: Schema): Rule {
  return chain([
    buildComponent({...options}, {
      template: './__path__/__name@dasherize@if-flat__/__name@dasherize__.component.html.template',
      stylesheet:
          './__path__/__name@dasherize@if-flat__/__name@dasherize__.component.__style__.template',
    }),
    options.skipImport ? noop() : addTreeModulesToModule(options)
  ]);
}

/**
 * Adds the required modules to the relative module.
 */
function addTreeModulesToModule(options: Schema) 
{
  return async (host: Tree) => {
    const modulePath = (await findModuleFromOptions(host, options))!;
    addModuleImportToModule(host, modulePath, 'MatTreeModule', '@angular/material/tree');
    addModuleImportToModule(host, modulePath, 'MatIconModule', '@angular/material/icon');
    addModuleImportToModule(host, modulePath, 'MatButtonModule', '@angular/material/button');
  };
}