import {
  MergeStrategy,
  SchematicContext,
  Tree,
  VirtualTree
} from '@angular-devkit/schematics';
import { isObservable, of } from 'rxjs';
import { tap } from 'rxjs/operators';

import { getFileContent } from '../test';
import { BUILD_COMMAND, CLI_IMPORT, SDK_IMPORT } from './constants';
import { Schema } from './schema';
import {
  BUILD_PRODUCTION,
  DEPLOY,
  DEPLOY_PUSH,
  PACKAGE_PATH,
  PACKAGE_PRODUCTION,
  updatePackage
} from './update.package';

describe('update.package', () => {
  const context: SchematicContext = ({
    engine: null,
    debug: false,
    strategy: MergeStrategy.Default
  } as {}) as SchematicContext;

  it('should update an existing package json', () => {
    const tree = new VirtualTree();

    const options: Schema = {};

    const pkg: any = {
      dependencies: {
        [SDK_IMPORT]: '^6.0.0'
      },
      devDependencies: {
        [CLI_IMPORT]: '^6.0.0'
      },
      scripts: {
        [BUILD_PRODUCTION]: BUILD_PRODUCTION,
        [PACKAGE_PRODUCTION]: PACKAGE_PRODUCTION,
        [DEPLOY_PUSH]: DEPLOY_PUSH,
        [DEPLOY]: DEPLOY
      }
    };

    tree.create(PACKAGE_PATH, JSON.stringify(pkg));

    const res = updatePackage(options)(tree, context);

    const rxRes = isObservable(res) ? res : of(res as Tree);

    return rxRes
      .pipe(
        tap(tree => {
          // verify the url
          expect(tree).toBeTruthy();
          if (tree) {
            // check that we have the file
            expect(tree.exists(PACKAGE_PATH)).toBeTruthy();

            const pkg = JSON.parse(getFileContent(tree, PACKAGE_PATH));
            expect(pkg.dependencies[SDK_IMPORT]).toBeTruthy();
            expect(pkg.devDependencies[CLI_IMPORT]).toBeTruthy();
            expect(pkg.scripts[BUILD_COMMAND]).toBeTruthy();
          }
        })
      )
      .toPromise();
  });

  it('should update the package json', () => {
    const tree = new VirtualTree();

    const options: Schema = {};

    const res = updatePackage(options)(tree, context);

    const rxRes = isObservable(res) ? res : of(res as Tree);

    return rxRes
      .pipe(
        tap(tree => {
          // verify the url
          expect(tree).toBeTruthy();
          if (tree) {
            // check that we have the file
            expect(tree.exists(PACKAGE_PATH)).toBeTruthy();

            const pkg = JSON.parse(getFileContent(tree, PACKAGE_PATH));
            expect(pkg.dependencies[SDK_IMPORT]).toBeTruthy();
            expect(pkg.devDependencies[CLI_IMPORT]).toBeTruthy();
            expect(pkg.scripts[BUILD_COMMAND]).toBeTruthy();
          }
        })
      )
      .toPromise();
  });
});