// Copyright 2021 Signal Messenger, LLC
// SPDX-License-Identifier: AGPL-3.0-only

import { assert } from 'chai';
import * as sinon from 'sinon';
import { times } from 'lodash';
import { v4 as uuid } from 'uuid';
import { RowType } from '../../../components/ConversationList';
import * as remoteConfig from '../../../RemoteConfig';
import { ContactCheckboxDisabledReason } from '../../../components/conversationList/ContactCheckbox';

import { LeftPaneChooseGroupMembersHelper } from '../../../components/leftPane/LeftPaneChooseGroupMembersHelper';

describe('LeftPaneChooseGroupMembersHelper', () => {
  const defaults = {
    candidateContacts: [],
    cantAddContactForModal: undefined,
    isShowingRecommendedGroupSizeModal: false,
    isShowingMaximumGroupSizeModal: false,
    searchTerm: '',
    selectedContacts: [],
  };

  const fakeContact = () => ({
    id: uuid(),
    isGroupV2Capable: true,
    title: uuid(),
    type: 'direct' as const,
  });

  let sinonSandbox: sinon.SinonSandbox;

  beforeEach(() => {
    sinonSandbox = sinon.createSandbox();

    sinonSandbox
      .stub(remoteConfig, 'getValue')
      .withArgs('global.groupsv2.maxGroupSize')
      .returns('22')
      .withArgs('global.groupsv2.groupSizeHardLimit')
      .returns('33');
  });

  afterEach(() => {
    sinonSandbox.restore();
  });

  describe('getBackAction', () => {
    it('returns the "show composer" action', () => {
      const startComposing = sinon.fake();
      const helper = new LeftPaneChooseGroupMembersHelper(defaults);

      assert.strictEqual(
        helper.getBackAction({ startComposing }),
        startComposing
      );
    });
  });

  describe('getRowCount', () => {
    it('returns 0 if there are no contacts', () => {
      assert.strictEqual(
        new LeftPaneChooseGroupMembersHelper({
          ...defaults,
          candidateContacts: [],
          searchTerm: '',
          selectedContacts: [fakeContact()],
        }).getRowCount(),
        0
      );
      assert.strictEqual(
        new LeftPaneChooseGroupMembersHelper({
          ...defaults,
          candidateContacts: [],
          searchTerm: 'foo bar',
          selectedContacts: [fakeContact()],
        }).getRowCount(),
        0
      );
    });

    it('returns the number of candidate contacts + 2 if there are any', () => {
      assert.strictEqual(
        new LeftPaneChooseGroupMembersHelper({
          ...defaults,
          candidateContacts: [fakeContact(), fakeContact()],
          searchTerm: '',
          selectedContacts: [fakeContact()],
        }).getRowCount(),
        4
      );
    });
  });

  describe('getRow', () => {
    it('returns undefined if there are no contacts', () => {
      assert.isUndefined(
        new LeftPaneChooseGroupMembersHelper({
          ...defaults,
          candidateContacts: [],
          searchTerm: '',
          selectedContacts: [fakeContact()],
        }).getRow(0)
      );
      assert.isUndefined(
        new LeftPaneChooseGroupMembersHelper({
          ...defaults,
          candidateContacts: [],
          searchTerm: '',
          selectedContacts: [fakeContact()],
        }).getRow(99)
      );
      assert.isUndefined(
        new LeftPaneChooseGroupMembersHelper({
          ...defaults,
          candidateContacts: [],
          searchTerm: 'foo bar',
          selectedContacts: [fakeContact()],
        }).getRow(0)
      );
    });

    it('returns a header, then the contacts, then a blank space if there are contacts', () => {
      const candidateContacts = [fakeContact(), fakeContact()];
      const helper = new LeftPaneChooseGroupMembersHelper({
        ...defaults,
        candidateContacts,
        searchTerm: 'foo bar',
        selectedContacts: [candidateContacts[1]],
      });

      assert.deepEqual(helper.getRow(0), {
        type: RowType.Header,
        i18nKey: 'contactsHeader',
      });
      assert.deepEqual(helper.getRow(1), {
        type: RowType.ContactCheckbox,
        contact: candidateContacts[0],
        isChecked: false,
        disabledReason: undefined,
      });
      assert.deepEqual(helper.getRow(2), {
        type: RowType.ContactCheckbox,
        contact: candidateContacts[1],
        isChecked: true,
        disabledReason: undefined,
      });
      assert.deepEqual(helper.getRow(3), { type: RowType.Blank });
    });

    it("disables non-selected contact checkboxes if you've selected the maximum number of contacts", () => {
      const candidateContacts = times(50, () => fakeContact());
      const helper = new LeftPaneChooseGroupMembersHelper({
        ...defaults,
        candidateContacts,
        searchTerm: 'foo bar',
        selectedContacts: candidateContacts.slice(1, 33),
      });

      assert.deepEqual(helper.getRow(1), {
        type: RowType.ContactCheckbox,
        contact: candidateContacts[0],
        isChecked: false,
        disabledReason: ContactCheckboxDisabledReason.MaximumContactsSelected,
      });
      assert.deepEqual(helper.getRow(2), {
        type: RowType.ContactCheckbox,
        contact: candidateContacts[1],
        isChecked: true,
        disabledReason: undefined,
      });
    });

    it("disables contacts that aren't GV2-capable, unless they are already selected somehow", () => {
      const candidateContacts = [
        { ...fakeContact(), isGroupV2Capable: false },
        { ...fakeContact(), isGroupV2Capable: undefined },
        { ...fakeContact(), isGroupV2Capable: false },
      ];

      const helper = new LeftPaneChooseGroupMembersHelper({
        ...defaults,
        candidateContacts,
        searchTerm: 'foo bar',
        selectedContacts: [candidateContacts[2]],
      });

      assert.deepEqual(helper.getRow(1), {
        type: RowType.ContactCheckbox,
        contact: candidateContacts[0],
        isChecked: false,
        disabledReason: ContactCheckboxDisabledReason.NotCapable,
      });
      assert.deepEqual(helper.getRow(2), {
        type: RowType.ContactCheckbox,
        contact: candidateContacts[1],
        isChecked: false,
        disabledReason: ContactCheckboxDisabledReason.NotCapable,
      });
      assert.deepEqual(helper.getRow(3), {
        type: RowType.ContactCheckbox,
        contact: candidateContacts[2],
        isChecked: true,
        disabledReason: undefined,
      });
    });
  });
});