import {join} from 'path';

import {JsonObject} from '@angular-devkit/core';
import {
  SchematicTestRunner,
  UnitTestTree,
} from '@angular-devkit/schematics/testing';

const WORKSPACE_OPTIONS = {
  name: 'workspace',
  newProjectRoot: 'projects',
  version: '14.0.0',
};

const APPLICATION_OPTIONS = {
  name: 'sandbox',
};

export function getProjectFile(file: string): string {
  return `/${WORKSPACE_OPTIONS.newProjectRoot}/${APPLICATION_OPTIONS.name}/${file}`;
}

export function getAngularJsonScripts(
  tree: UnitTestTree,
  isDefault = true
): {
  builder: string;
  configurations: Record<string, any>;
  options: Record<string, any>;
} {
  const angularJson = tree.readJson('angular.json') as any;
  const e2eScript = isDefault ? 'e2e' : 'puppeteer';
  return angularJson['projects']?.[APPLICATION_OPTIONS.name]?.['architect'][
    e2eScript
  ];
}

export function getPackageJson(tree: UnitTestTree): {
  scripts: Record<string, string>;
  devDependencies: string[];
} {
  const packageJson = tree.readJson('package.json') as JsonObject;
  return {
    scripts: packageJson['scripts'] as any,
    devDependencies: Object.keys(
      packageJson['devDependencies'] as Record<string, string>
    ),
  };
}

export async function buildTestingTree(
  userOptions?: Record<string, any>
): Promise<UnitTestTree> {
  const runner = new SchematicTestRunner(
    'schematics',
    join(__dirname, '../../lib/schematics/collection.json')
  );
  const options = {
    isDefaultTester: true,
    exportConfig: false,
    testingFramework: 'jasmine',
    ...userOptions,
  };
  let workingTree: UnitTestTree;

  // Build workspace
  workingTree = await runner.runExternalSchematic(
    '@schematics/angular',
    'workspace',
    WORKSPACE_OPTIONS
  );
  // Build dummy application
  workingTree = await runner.runExternalSchematic(
    '@schematics/angular',
    'application',
    APPLICATION_OPTIONS,
    workingTree
  );

  return await runner.runSchematic('ng-add', options, workingTree);
}