/*
 * 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", the "GNU Affero General Public License v3.0 only", and the "Server Side
 * Public License v 1"; you may not use this file except in compliance with, at
 * your election, the "Elastic License 2.0", the "GNU Affero General Public
 * License v3.0 only", or the "Server Side Public License, v 1".
 */

import React, { useState } from 'react';
import ReactDOM from 'react-dom';

import {
  EuiText,
  EuiPageTemplate,
  EuiCard,
  EuiPageHeader,
  EuiFlexGroup,
  EuiFlexItem,
  EuiFieldSearch,
  EuiListGroup,
  EuiHighlight,
  EuiLink,
  EuiButtonIcon,
} from '@elastic/eui';
import {
  AnalyticsServiceStart,
  AppMountParameters,
  I18nStart,
  ThemeServiceStart,
  UserProfileService,
} from '@kbn/core/public';
import { KibanaRenderContextProvider } from '@kbn/react-kibana-context-render';
import { ExampleDefinition } from './types';

interface StartServices {
  analytics: Pick<AnalyticsServiceStart, 'reportEvent'>;
  i18n: I18nStart;
  theme: Pick<ThemeServiceStart, 'theme$'>;
  userProfile: UserProfileService;
}

interface Props {
  startServices: StartServices;
  examples: ExampleDefinition[];
  navigateToApp: (appId: string) => void;
  getUrlForApp: (appId: string) => string;
}

function DeveloperExamples({ startServices, examples, navigateToApp, getUrlForApp }: Props) {
  const [search, setSearch] = useState<string>('');

  const lcSearch = search.toLowerCase();
  const filteredExamples = !lcSearch
    ? examples
    : examples.filter((def) => {
        if (def.description.toLowerCase().indexOf(lcSearch) >= 0) return true;
        if (def.title.toLowerCase().indexOf(lcSearch) >= 0) return true;
        return false;
      });

  return (
    <KibanaRenderContextProvider {...startServices}>
      <EuiPageTemplate offset={0}>
        <EuiPageTemplate.Header>
          <EuiFlexGroup justifyContent={'spaceBetween'}>
            <EuiFlexItem>
              <EuiPageHeader pageTitle={'Developer examples'} />
              <EuiText>
                The following examples showcase services and APIs that are available to developers.
              </EuiText>
            </EuiFlexItem>
            <EuiFlexItem>
              <EuiFieldSearch
                fullWidth
                placeholder="Search"
                value={search}
                onChange={(e) => setSearch(e.target.value)}
                isClearable={true}
                aria-label="Search developer examples"
              />
            </EuiFlexItem>
          </EuiFlexGroup>
        </EuiPageTemplate.Header>
        <EuiPageTemplate.Section>
          <EuiFlexGroup wrap>
            {filteredExamples.map((def) => (
              <EuiFlexItem style={{ minWidth: 300, maxWidth: 500 }} key={def.appId}>
                <EuiCard
                  description={
                    <EuiHighlight search={search} highlightAll={true}>
                      {def.description}
                    </EuiHighlight>
                  }
                  title={
                    <React.Fragment>
                      <EuiLink
                        onClick={() => {
                          navigateToApp(def.appId);
                        }}
                      >
                        <EuiHighlight search={search} highlightAll={true}>
                          {def.title}
                        </EuiHighlight>
                      </EuiLink>
                      <EuiButtonIcon
                        iconType="popout"
                        onClick={() =>
                          window.open(getUrlForApp(def.appId), '_blank', 'noopener, noreferrer')
                        }
                      >
                        Open in new tab
                      </EuiButtonIcon>
                    </React.Fragment>
                  }
                  image={def.image}
                  footer={def.links ? <EuiListGroup size={'s'} listItems={def.links} /> : undefined}
                />
              </EuiFlexItem>
            ))}
          </EuiFlexGroup>
        </EuiPageTemplate.Section>
      </EuiPageTemplate>
    </KibanaRenderContextProvider>
  );
}

export const renderApp = (props: Props, element: AppMountParameters['element']) => {
  ReactDOM.render(<DeveloperExamples {...props} />, element);

  return () => ReactDOM.unmountComponentAtNode(element);
};