import {bootstrap} from 'aurelia-bootstrapper';
import {StageComponent} from 'aurelia-testing';
import {getEndlessObject, getMockStore, wait} from '../../src/lib/test-utils.js';

/**
 * Mock Component Config
 * @typedef {Object} MockComponentConfig
 * @property {string} markup - html markup
 * @property {string|string[]} [resources=[]] inserted into StageComponent.withResources
 * @property {Object} [mockStore={}] default store contents
 * @property {Object} [mockBeans={}] beans contents, defaults to endless object
 * @property {Object} [mockState={}] state to send to component.viewModel.mapState
 * @property {Object} [mockAttributes={}] attribute values to be inserted into html
 */

/**
 * @param {MockComponentConfig} defaultConfig
 * @returns {{create: (function([MockComponentConfig]))}}
 */
export function mockComponentFactory(defaultConfig = {}) {
  return {
    /**
     * @param {MockComponentConfig} [testConfig]
     * @returns {[StageComponent,Promise,*]}
     */
    create: (testConfig = {}) => {
      let component = StageComponent
        .withResources(testConfig.resources || defaultConfig.resources || [])
        .inView(testConfig.markup || defaultConfig.markup);
      component.mockStore = getMockStore(testConfig.mockStore || defaultConfig.mockStore || {});
      component.mockBeans = testConfig.mockStore || defaultConfig.mockBeans || getEndlessObject();
      component.configure = (aurelia) => {
        aurelia.container.registerInstance('Store', component.mockStore);
        aurelia.container.registerInstance('Beans', component.mockBeans);
        aurelia.use.basicConfiguration();
      };
      component.boundTo(testConfig.mockAttributes || defaultConfig.mockAttributes || {});
      let promise = component.create(bootstrap);
      let state = testConfig.mockState || defaultConfig.mockState;
      if (state) {
        promise = promise
          .then(() => {
            component.viewModel.mapState(state);
          })
          .then(wait());
      }
      return [component, promise, component.viewModel];
    }
  };
}

/**
 * @param {Object} mockState
 * @param {StageComponent} component
 * @param {Function} done
 * @return {Promise}
 */
export function expectMockStateToPopulateComponent(mockState, component, done) {
  let promise = component.create(bootstrap);
  promise
    .then(() => {
      component.viewModel.mapState(mockState);
    })
    .then(wait())
    .then(() => {
      expect(component.viewModel.isPopulated).toBe(true);
      done();
    })
    .catch((e)=>{
      expect(e).toBeNull();
      done();
    });
  return promise;
}

/**
 * @param {StageComponent} component
 * @param {Function} done
 * @return {Promise}
 */
export function expectEmptyMockStateToNotPopulateComponent(component, done) {
  let promise = component.create(bootstrap);
  promise
    .then(() => {
      component.viewModel.mapState({});
    })
    .then(wait())
    .then(() => {
      expect(component.viewModel.isPopulated).toBe(false);
      done();
    })
    .catch((e)=>{
      expect(e).toBeNull();
      done();
    });
  return promise;
}