import {execSync} from 'child_process';
import {readFileSync, statSync, writeFileSync} from 'fs';
import * as path from 'path';

export function newApp(command: string): string {
  return execSync(`../node_modules/.bin/ng ${command}`, {cwd: `./tmp`}).toString();
}
export function runCLI(command: string, {projectName: projectName}: {projectName: string}): string {
  projectName = projectName === undefined ? '' : projectName;
  return execSync(`../../node_modules/.bin/ng ${command}`, {cwd: `./tmp/${projectName}`}).toString();
}
export function runSchematic(command: string, {projectName}: {projectName?: string} = {}): string {
  const up = projectName ? '../' : '';
  projectName = projectName === undefined ? '' : projectName;
  return execSync(`../${up}node_modules/.bin/schematics ${command}`, {cwd: `./tmp/${projectName}`}).toString();
}
export function runCommand(command: string, {projectName}: {projectName: string}): string {
  projectName = projectName === undefined ? '' : projectName;
  return execSync(command, {cwd: `./tmp/${projectName}`}).toString();
}

export function updateFile(f: string, content: string): void {
  writeFileSync(path.join(getCwd(), 'tmp', f), content);
}

export function checkFilesExists(...expectedFiles: string[]) {
  expectedFiles.forEach(f => {
    const ff = f.startsWith('/') ? f : path.join(getCwd(), 'tmp', f);
    if (!exists(ff)) {
      throw new Error(`File '${ff}' does not exist`);
    }
  });
}

export function readFile(f: string) {
  const ff = f.startsWith('/') ? f : path.join(getCwd(), 'tmp', f);
  return readFileSync(ff).toString();
}

export function cleanup() {
  execSync('rm -rf tmp && mkdir tmp');
}

export function getCwd(): string {
  return process.cwd();
}

export function directoryExists(filePath: string): boolean {
  try {
    return statSync(filePath).isDirectory();
  } catch (err) {
    return false;
  }
}

export function fileExists(filePath: string): boolean {
  try {
    return statSync(filePath).isFile();
  } catch (err) {
    return false;
  }
}

export function exists(filePath: string): boolean {
  return directoryExists(filePath) || fileExists(filePath);
}

export function copyMissingPackages(path: string): void {
  execSync(`cp -r node_modules/@ngrx tmp/${path}/node_modules/@ngrx`);
  execSync(`cp -r node_modules/jasmine-marbles tmp/${path}/node_modules/jasmine-marbles`);
  execSync(`cp -r node_modules/@nrwl tmp/${path}/node_modules/@nrwl`);
  execSync(`cp -r node_modules/angular tmp/${path}/node_modules/angular`);
  execSync(`cp -r node_modules/@angular/upgrade tmp/${path}/node_modules/@angular/upgrade`);
}

export function addNodeModule(path: string, module: string): void {
  execSync(`cp -r node_modules/${module} tmp/${path}/node_modules/${module}`);
}