// Copyright (c) Microsoft Corporation. All rights reserved. Licensed under the MIT license.
// See LICENSE in the project root for license information.

import * as colors from 'colors';
import * as os from 'os';

import { CommandLineParser, CommandLineFlagParameter } from '@rushstack/ts-command-line';
import { InternalError } from '@rushstack/node-core-library';

import { RunAction } from './RunAction';
import { InitAction } from './InitAction';

export class ApiExtractorCommandLine extends CommandLineParser {
  private _debugParameter: CommandLineFlagParameter;

  public constructor() {
    super({
      toolFilename: 'api-extractor',
      toolDescription: 'API Extractor helps you build better TypeScript libraries.  It analyzes the main entry'
        + ' point for your package, collects the inventory of exported declarations, and then generates three kinds'
        + ' of output:  an API report file (.api.md) to facilitate reviews, a declaration rollup (.d.ts) to be'
        + ' published with your NPM package, and a doc model file (.api.json) to be used with a documentation'
        + ' tool such as api-documenter.  For details, please visit the web site.'
    });
    this._populateActions();
  }

  protected onDefineParameters(): void { // override
    this._debugParameter = this.defineFlagParameter({
      parameterLongName: '--debug',
      parameterShortName: '-d',
      description: 'Show the full call stack if an error occurs while executing the tool'
    });
  }

  protected onExecute(): Promise<void> { // override
    if (this._debugParameter.value) {
      InternalError.breakInDebugger = true;
    }

    return super.onExecute().catch((error) => {

      if (this._debugParameter.value) {
        console.error(os.EOL + error.stack);
      } else {
        console.error(os.EOL + colors.red('ERROR: ' + error.message.trim()));
      }

      process.exitCode = 1;
    });
  }

  private _populateActions(): void {
    this.addAction(new InitAction(this));
    this.addAction(new RunAction(this));
  }
}