[App Search] Create Curation view/functionality (#92560)

* Add server route and logic listener

* [Misc] Remove 'Set' from 'deleteCurationSet'
- to match createCuration

- IMO, this language isn't necessary if we're splitting up Curations and CurationLogic - the context is fairly evident within a smaller and more modular logic file

* Add CurationQueries component

+ accompanying CurationQueriesLogic & CurationQuery row

* Add CurationCreation view

x-pack/plugins/enterprise_search/public/applications/app_search/components/curations/components/curation_queries/curation_queries.scss

@@ -0,0 +1,3 @@
+.curationQueryRow {
+  margin-bottom: $euiSizeXS;
+}

x-pack/plugins/enterprise_search/public/applications/app_search/components/curations/components/curation_queries/curation_queries.test.tsx

@@ -0,0 +1,102 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the Elastic License
+ * 2.0; you may not use this file except in compliance with the Elastic License
+ * 2.0.
+ */
+
+import { setMockActions, setMockValues } from '../../../../../__mocks__';
+
+import React from 'react';
+
+import { shallow } from 'enzyme';
+
+import { CurationQuery } from './curation_query';
+
+import { CurationQueries } from './';
+
+describe('CurationQueries', () => {
+  const props = {
+    queries: ['a', 'b', 'c'],
+    onSubmit: jest.fn(),
+  };
+  const values = {
+    queries: ['a', 'b', 'c'],
+    hasEmptyQueries: false,
+    hasOnlyOneQuery: false,
+  };
+  const actions = {
+    addQuery: jest.fn(),
+    editQuery: jest.fn(),
+    deleteQuery: jest.fn(),
+  };
+
+  beforeEach(() => {
+    jest.clearAllMocks();
+    setMockValues(values);
+    setMockActions(actions);
+  });
+
+  it('renders a CurationQuery row for each query', () => {
+    const wrapper = shallow(<CurationQueries {...props} />);
+
+    expect(wrapper.find(CurationQuery)).toHaveLength(3);
+    expect(wrapper.find(CurationQuery).at(0).prop('queryValue')).toEqual('a');
+    expect(wrapper.find(CurationQuery).at(1).prop('queryValue')).toEqual('b');
+    expect(wrapper.find(CurationQuery).at(2).prop('queryValue')).toEqual('c');
+  });
+
+  it('calls editQuery when the CurationQuery value changes', () => {
+    const wrapper = shallow(<CurationQueries {...props} />);
+    wrapper.find(CurationQuery).at(0).simulate('change', 'new query value');
+
+    expect(actions.editQuery).toHaveBeenCalledWith(0, 'new query value');
+  });
+
+  it('calls deleteQuery when the CurationQuery calls onDelete', () => {
+    const wrapper = shallow(<CurationQueries {...props} />);
+    wrapper.find(CurationQuery).at(2).simulate('delete');
+
+    expect(actions.deleteQuery).toHaveBeenCalledWith(2);
+  });
+
+  it('calls addQuery when the Add Query button is clicked', () => {
+    const wrapper = shallow(<CurationQueries {...props} />);
+    wrapper.find('[data-test-subj="addCurationQueryButton"]').simulate('click');
+
+    expect(actions.addQuery).toHaveBeenCalled();
+  });
+
+  it('disables the add button if any query fields are empty', () => {
+    setMockValues({
+      ...values,
+      queries: ['a', '', 'c'],
+      hasEmptyQueries: true,
+    });
+    const wrapper = shallow(<CurationQueries {...props} />);
+    const button = wrapper.find('[data-test-subj="addCurationQueryButton"]');
+
+    expect(button.prop('isDisabled')).toEqual(true);
+  });
+
+  it('calls the passed onSubmit callback when the submit button is clicked', () => {
+    setMockValues({ ...values, queries: ['some query'] });
+    const wrapper = shallow(<CurationQueries {...props} />);
+    wrapper.find('[data-test-subj="submitCurationQueriesButton"]').simulate('click');
+
+    expect(props.onSubmit).toHaveBeenCalledWith(['some query']);
+  });
+
+  it('disables the submit button if no query fields have been filled', () => {
+    setMockValues({
+      ...values,
+      queries: [''],
+      hasOnlyOneQuery: true,
+      hasEmptyQueries: true,
+    });
+    const wrapper = shallow(<CurationQueries {...props} />);
+    const button = wrapper.find('[data-test-subj="submitCurationQueriesButton"]');
+
+    expect(button.prop('isDisabled')).toEqual(true);
+  });
+});

x-pack/plugins/enterprise_search/public/applications/app_search/components/curations/components/curation_queries/curation_queries.tsx

@@ -0,0 +1,72 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the Elastic License
+ * 2.0; you may not use this file except in compliance with the Elastic License
+ * 2.0.
+ */
+
+import React from 'react';
+
+import { useValues, useActions } from 'kea';
+
+import { EuiButton, EuiButtonEmpty, EuiSpacer } from '@elastic/eui';
+import { i18n } from '@kbn/i18n';
+
+import { Curation } from '../../types';
+
+import { CurationQueriesLogic } from './curation_queries_logic';
+import { CurationQuery } from './curation_query';
+import { filterEmptyQueries } from './utils';
+import './curation_queries.scss';
+
+interface Props {
+  queries: Curation['queries'];
+  onSubmit(queries: Curation['queries']): void;
+  submitButtonText?: string;
+}
+
+export const CurationQueries: React.FC<Props> = ({
+  queries: initialQueries,
+  onSubmit,
+  submitButtonText = i18n.translate('xpack.enterpriseSearch.actions.continue', {
+    defaultMessage: 'Continue',
+  }),
+}) => {
+  const logic = CurationQueriesLogic({ queries: initialQueries });
+  const { queries, hasEmptyQueries, hasOnlyOneQuery } = useValues(logic);
+  const { addQuery, editQuery, deleteQuery } = useActions(logic);
+
+  return (
+    <>
+      {queries.map((query: string, index) => (
+        <CurationQuery
+          key={`query-${index}`}
+          queryValue={query}
+          onChange={(newValue) => editQuery(index, newValue)}
+          onDelete={() => deleteQuery(index)}
+          disableDelete={hasOnlyOneQuery}
+        />
+      ))}
+      <EuiButtonEmpty
+        size="s"
+        iconType="plusInCircle"
+        onClick={addQuery}
+        isDisabled={hasEmptyQueries}
+        data-test-subj="addCurationQueryButton"
+      >
+        {i18n.translate('xpack.enterpriseSearch.appSearch.engine.curations.addQueryButtonLabel', {
+          defaultMessage: 'Add query',
+        })}
+      </EuiButtonEmpty>
+      <EuiSpacer />
+      <EuiButton
+        fill
+        isDisabled={hasOnlyOneQuery && hasEmptyQueries}
+        onClick={() => onSubmit(filterEmptyQueries(queries))}
+        data-test-subj="submitCurationQueriesButton"
+      >
+        {submitButtonText}
+      </EuiButton>
+    </>
+  );
+};

x-pack/plugins/enterprise_search/public/applications/app_search/components/curations/components/curation_queries/curation_queries_logic.test.ts

@@ -0,0 +1,98 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the Elastic License
+ * 2.0; you may not use this file except in compliance with the Elastic License
+ * 2.0.
+ */
+
+import { resetContext } from 'kea';
+
+import { CurationQueriesLogic } from './curation_queries_logic';
+
+describe('CurationQueriesLogic', () => {
+  const MOCK_QUERIES = ['a', 'b', 'c'];
+
+  const DEFAULT_PROPS = { queries: MOCK_QUERIES };
+  const DEFAULT_VALUES = {
+    queries: MOCK_QUERIES,
+    hasEmptyQueries: false,
+    hasOnlyOneQuery: false,
+  };
+
+  const mount = (props = {}) => {
+    CurationQueriesLogic({ ...DEFAULT_PROPS, ...props });
+    CurationQueriesLogic.mount();
+  };
+
+  beforeEach(() => {
+    jest.clearAllMocks();
+    resetContext({});
+  });
+
+  it('has expected default values passed from props', () => {
+    mount();
+    expect(CurationQueriesLogic.values).toEqual(DEFAULT_VALUES);
+  });
+
+  describe('actions', () => {
+    afterEach(() => {
+      // Should not mutate the original array
+      expect(CurationQueriesLogic.values.queries).not.toBe(MOCK_QUERIES); // Would fail if we did not clone a new array
+    });
+
+    describe('addQuery', () => {
+      it('appends an empty string to the queries array', () => {
+        mount();
+        CurationQueriesLogic.actions.addQuery();
+
+        expect(CurationQueriesLogic.values).toEqual({
+          ...DEFAULT_VALUES,
+          hasEmptyQueries: true,
+          queries: ['a', 'b', 'c', ''],
+        });
+      });
+    });
+
+    describe('deleteQuery', () => {
+      it('deletes the query string at the specified array index', () => {
+        mount();
+        CurationQueriesLogic.actions.deleteQuery(1);
+
+        expect(CurationQueriesLogic.values).toEqual({
+          ...DEFAULT_VALUES,
+          queries: ['a', 'c'],
+        });
+      });
+    });
+
+    describe('editQuery', () => {
+      it('edits the query string at the specified array index', () => {
+        mount();
+        CurationQueriesLogic.actions.editQuery(2, 'z');
+
+        expect(CurationQueriesLogic.values).toEqual({
+          ...DEFAULT_VALUES,
+          queries: ['a', 'b', 'z'],
+        });
+      });
+    });
+  });
+
+  describe('selectors', () => {
+    describe('hasEmptyQueries', () => {
+      it('returns true if queries has any empty strings', () => {
+        mount({ queries: ['', '', ''] });
+
+        expect(CurationQueriesLogic.values.hasEmptyQueries).toEqual(true);
+      });
+    });
+
+    describe('hasOnlyOneQuery', () => {
+      it('returns true if queries only has one item', () => {
+        mount({ queries: ['test'] });
+
+        expect(CurationQueriesLogic.values.hasOnlyOneQuery).toEqual(true);
+      });
+    });
+  });
+});

x-pack/plugins/enterprise_search/public/applications/app_search/components/curations/components/curation_queries/curation_queries_logic.ts

@@ -0,0 +1,53 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the Elastic License
+ * 2.0; you may not use this file except in compliance with the Elastic License
+ * 2.0.
+ */
+
+import { kea, MakeLogicType } from 'kea';
+
+interface CurationQueriesValues {
+  queries: string[];
+  hasEmptyQueries: boolean;
+  hasOnlyOneQuery: boolean;
+}
+
+interface CurationQueriesActions {
+  addQuery(): void;
+  deleteQuery(indexToDelete: number): { indexToDelete: number };
+  editQuery(index: number, newQueryValue: string): { index: number; newQueryValue: string };
+}
+
+export const CurationQueriesLogic = kea<
+  MakeLogicType<CurationQueriesValues, CurationQueriesActions>
+>({
+  path: ['enterprise_search', 'app_search', 'curation_queries_logic'],
+  actions: () => ({
+    addQuery: true,
+    deleteQuery: (indexToDelete) => ({ indexToDelete }),
+    editQuery: (index, newQueryValue) => ({ index, newQueryValue }),
+  }),
+  reducers: ({ props }) => ({
+    queries: [
+      props.queries,
+      {
+        addQuery: (state) => [...state, ''],
+        deleteQuery: (state, { indexToDelete }) => {
+          const newState = [...state];
+          newState.splice(indexToDelete, 1);
+          return newState;
+        },
+        editQuery: (state, { index, newQueryValue }) => {
+          const newState = [...state];
+          newState[index] = newQueryValue;
+          return newState;
+        },
+      },
+    ],
+  }),
+  selectors: {
+    hasEmptyQueries: [(selectors) => [selectors.queries], (queries) => queries.indexOf('') >= 0],
+    hasOnlyOneQuery: [(selectors) => [selectors.queries], (queries) => queries.length <= 1],
+  },
+});

x-pack/plugins/enterprise_search/public/applications/app_search/components/curations/components/curation_queries/curation_query.test.tsx

@@ -0,0 +1,55 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the Elastic License
+ * 2.0; you may not use this file except in compliance with the Elastic License
+ * 2.0.
+ */
+
+import React from 'react';
+
+import { shallow } from 'enzyme';
+
+import { EuiFieldText } from '@elastic/eui';
+
+import { CurationQuery } from './curation_query';
+
+describe('CurationQuery', () => {
+  const props = {
+    queryValue: 'some query',
+    onChange: jest.fn(),
+    onDelete: jest.fn(),
+    disableDelete: false,
+  };
+
+  beforeEach(() => {
+    jest.clearAllMocks();
+  });
+
+  it('renders', () => {
+    const wrapper = shallow(<CurationQuery {...props} />);
+
+    expect(wrapper.find(EuiFieldText)).toHaveLength(1);
+    expect(wrapper.find(EuiFieldText).prop('value')).toEqual('some query');
+  });
+
+  it('calls onChange when the input value changes', () => {
+    const wrapper = shallow(<CurationQuery {...props} />);
+    wrapper.find(EuiFieldText).simulate('change', { target: { value: 'new query value' } });
+
+    expect(props.onChange).toHaveBeenCalledWith('new query value');
+  });
+
+  it('calls onDelete when the delete button is clicked', () => {
+    const wrapper = shallow(<CurationQuery {...props} />);
+    wrapper.find('[data-test-subj="deleteCurationQueryButton"]').simulate('click');
+
+    expect(props.onDelete).toHaveBeenCalled();
+  });
+
+  it('disables the delete button if disableDelete is passed', () => {
+    const wrapper = shallow(<CurationQuery {...props} disableDelete />);
+    const button = wrapper.find('[data-test-subj="deleteCurationQueryButton"]');
+
+    expect(button.prop('isDisabled')).toEqual(true);
+  });
+});