/*
 * SPDX-License-Identifier: Apache-2.0
 *
 * The OpenSearch Contributors require contributions made to
 * this file be licensed under the Apache-2.0 license or a
 * compatible open source license.
 *
 * Any modifications Copyright OpenSearch Contributors. See
 * GitHub history for details.
 */

/*
 * Licensed to Elasticsearch B.V. under one or more contributor
 * license agreements. See the NOTICE file distributed with
 * this work for additional information regarding copyright
 * ownership. Elasticsearch B.V. licenses this file to you under
 * the Apache License, Version 2.0 (the "License"); you may
 * not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

import React, { useState } from 'react';
import { EuiModalBody } from '@elastic/eui';
import { i18n } from '@osd/i18n';
import { OverlayStart } from 'opensearch-dashboards/public';
import { EuiFieldText } from '@elastic/eui';
import { EuiButton } from '@elastic/eui';
import { toMountPoint } from '../../../../src/plugins/opensearch_dashboards_react/public';
import {
  IContainer,
  EmbeddableFactoryDefinition,
  EmbeddableFactory,
} from '../../../../src/plugins/embeddable/public';
import { TodoEmbeddable, TODO_EMBEDDABLE, TodoInput, TodoOutput } from './todo_embeddable';

function TaskInput({ onSave }: { onSave: (task: string) => void }) {
  const [task, setTask] = useState('');
  return (
    <EuiModalBody>
      <EuiFieldText
        data-test-subj="taskInputField"
        value={task}
        placeholder="Enter task here"
        onChange={(e) => setTask(e.target.value)}
      />
      <EuiButton data-test-subj="createTodoEmbeddable" onClick={() => onSave(task)}>
        Save
      </EuiButton>
    </EuiModalBody>
  );
}

interface StartServices {
  openModal: OverlayStart['openModal'];
}

export type TodoEmbeddableFactory = EmbeddableFactory<TodoInput, TodoOutput, TodoEmbeddable>;

export class TodoEmbeddableFactoryDefinition
  implements EmbeddableFactoryDefinition<TodoInput, TodoOutput, TodoEmbeddable> {
  public readonly type = TODO_EMBEDDABLE;

  constructor(private getStartServices: () => Promise<StartServices>) {}

  public async isEditable() {
    return true;
  }

  public async create(initialInput: TodoInput, parent?: IContainer) {
    return new TodoEmbeddable(initialInput, parent);
  }

  /**
   * This function is used when dynamically creating a new embeddable to add to a
   * container. Some input may be inherited from the container, but not all. This can be
   * used to collect specific embeddable input that the container will not provide, like
   * in this case, the task string.
   */
  public getExplicitInput = async () => {
    const { openModal } = await this.getStartServices();
    return new Promise<{ task: string }>((resolve) => {
      const onSave = (task: string) => resolve({ task });
      const overlay = openModal(
        toMountPoint(
          <TaskInput
            onSave={(task: string) => {
              onSave(task);
              overlay.close();
            }}
          />
        )
      );
    });
  };

  public getDisplayName() {
    return i18n.translate('embeddableExamples.todo.displayName', {
      defaultMessage: 'Todo item',
    });
  }
}