import Store from '../../src/modules/store.js';

export default class StoreTest {
  constructor(assert) {
    this.assert = assert;
  }

  test() {
    (() => {
      let called = false
      const callback = () => called = true;
      const store = new Store();

      store.subscribe(callback);
      Store.publish(Store.actions.ADD_LINE);

      this.assert("Subscribed callback is run after a successfull publish action", called, true);

    })();
    (() => {
      const store = new Store();
      store.state = {
        records: [
          {id: 0, text: "asdf", action: 'add'},
          {id: 1, text: "qwer", action: 'add'},
        ],
        selected: [0],
      };

      Store.publish('WRONG');

      const expected = {
        records: [
          {id: 0, text: "asdf", action: 'add'},
          {id: 1, text: "qwer", action: 'add'},
        ],
        selected: [0],
      };

      this.assert("Publish with unknown action does nothing", store.state, expected);

    })();
    (() => {
      const store = new Store();

      Store.publish(Store.actions.ADD_LINE);

      const expected = [
        {id: 0, text: "asdf", action: 'add'},
      ];

      this.assert("Publishing action ADD_LINE adds a line to the records", store.state.records, expected);

    })();
    (() => {
      const store = new Store();
      store.state = {
        records: [
          {id: 0, text: "asdf", action: 'add'},
        ],
        selected: [],
      };

      Store.publish(Store.actions.REMOVE_LINE);

      const expected = [
        {id: 0, text: "asdf", action: 'add'},
      ];

      this.assert("Publish action REMOVE_LINE without selected in the state does nothing", store.state.records, expected);

    })();
    (() => {
      const store = new Store();
      store.state = {
        records: [
          {id: 0, text: "asdf", action: 'add'},
        ],
        selected: [0],
      };

      Store.publish(Store.actions.REMOVE_LINE);

      const expected = [
        {id: 0, text: "asdf", action: 'add'},
        {id: 1, targetIds: [0], action: 'remove'},
      ];

      this.assert("Publish action REMOVE_LINE with one selected id in the state creates a remove record", store.state.records, expected);
      this.assert("Selected status is reset after REMOVE_LINE action", store.state.selected, []);

    })();

    (() => {
      const store = new Store();
      store.state.records = [
        {id: 0, text: "asdf", action: 'add'},
        {id: 1, text: "qwer", action: 'add'},
        {id: 2, action: 'remove'},
      ]

      Store.publish(Store.actions.UNDO);

      const expected = [
        {id: 0, text: "asdf", action: 'add'},
        {id: 1, text: "qwer", action: 'add'},
      ];

      this.assert("Publish action UNDO removes last record", store.state.records, expected);

    })();

    (() => {
      const store = new Store();
      store.state.selected = [0]

      Store.publish(Store.actions.SELECTED, [1, 3]);

      const expected = [1, 3];

      this.assert("Publish action SELECTED updates the array of selected ids", store.state.records, expected);

    })();

    (() => {
      const store = new Store();

      store.state.records = [
        {id: 0, text: "Line 1", action: 'add'},
        {id: 1, text: "Line 2", action: 'add'},
        {id: 2, text: "Line 3", action: 'add'},
      ];
      
      const expected = [
        {id: 0, text: "Line 1"},
        {id: 1, text: "Line 2"},
        {id: 2, text: "Line 3"},
      ];

      this.assert("getRecords() returns an array of strings with 3 add records", store.getRecords(), expected);
    })();

    (() => {
      const store = new Store();

      store.state.records = [
        {id: 0, text: "Line 1", action: 'add'},
        {id: 1, text: "Line 2", action: 'add'},
        {id: 2, text: "Line 3", action: 'add'},
        {id: 3, targetIds: [1], action: 'remove'},
      ];
      
      const expected = [
        {id: 0, text: "Line 1"},
        {id: 2, text: "Line 3"},
      ];

      this.assert("getRecords() returns an array of 2 strings with 3 add records and a delete record with 1 id", store.getRecords(), expected);
    })();

    (() => {
      const store = new Store();

      store.state.records = [
        {id: 0, text: "Line 1", action: 'add'},
        {id: 1, text: "Line 2", action: 'add'},
        {id: 2, text: "Line 3", action: 'add'},
        {id: 3, targetIds: [0, 1], action: 'remove'},
      ];
      
      const expected = [
        {id: 2, text: "Line 3"},
      ];

      this.assert("getRecords() returns an array of 1 string with 3 add records and a delete record with 2 ids", store.getRecords(), expected);
    })();

    (() => {
      const store = new Store();

      store.state.selected = [0, 1];
      
      const expected = [0, 1];

      this.assert("getSelected() returns an array of ids representing the selected items", store.getSelected(), expected);
    })();
  }
}