/*
 * SonarQube
 * Copyright (C) 2009-2017 SonarSource SA
 * mailto:info AT sonarsource DOT com
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 3 of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 */
// @flow
import React from 'react';
import { connect } from 'react-redux';
import { keyBy } from 'lodash';
import { Link } from 'react-router';
import AboutProjects from './AboutProjects';
import EntryIssueTypes from './EntryIssueTypes';
import AboutLanguages from './AboutLanguages';
import AboutCleanCode from './AboutCleanCode';
import AboutQualityModel from './AboutQualityModel';
import AboutQualityGates from './AboutQualityGates';
import AboutLeakPeriod from './AboutLeakPeriod';
import AboutStandards from './AboutStandards';
import AboutScanners from './AboutScanners';
import { searchProjects } from '../../../api/components';
import { getFacet } from '../../../api/issues';
import { getAppState, getCurrentUser, getSettingValue } from '../../../store/rootReducer';
import { translate } from '../../../helpers/l10n';
import { fetchAboutPageSettings } from '../actions';
import AboutAppForSonarQubeDotComLazyLoader from './AboutAppForSonarQubeDotComLazyLoader';
import '../styles.css';

type State = {
  loading: boolean,
  projectsCount: number,
  issueTypes?: {
    [key: string]: ?{
      count: number
    }
  }
};

class AboutApp extends React.PureComponent {
  mounted: boolean;

  props: {
    appState: {
      defaultOrganization: string,
      organizationsEnabled: boolean
    },
    currentUser: { isLoggedIn: boolean },
    customText?: string,
    fetchAboutPageSettings: () => Promise<*>,
    sonarqubeDotCom?: { value: string }
  };

  state: State = {
    loading: true,
    projectsCount: 0
  };

  componentDidMount() {
    this.mounted = true;
    this.loadData();
  }

  componentWillUnmount() {
    this.mounted = false;
  }

  loadProjects() {
    return searchProjects({ ps: 1 }).then(r => r.paging.total);
  }

  loadIssues() {
    return getFacet({ resolved: false }, 'types');
  }

  loadCustomText() {
    return this.props.fetchAboutPageSettings();
  }

  loadData() {
    Promise.all([this.loadProjects(), this.loadIssues(), this.loadCustomText()]).then(responses => {
      if (this.mounted) {
        const [projectsCount, issues] = responses;
        const issueTypes = keyBy(issues.facet, 'val');
        this.setState({
          projectsCount,
          issueTypes,
          loading: false
        });
      }
    });
  }

  render() {
    if (this.state.loading) {
      return null;
    }

    const { customText, sonarqubeDotCom } = this.props;

    // $FlowFixMe
    const bugs = this.state.issueTypes['BUG'].count;
    // $FlowFixMe
    const vulnerabilities = this.state.issueTypes['VULNERABILITY'].count;
    // $FlowFixMe
    const codeSmells = this.state.issueTypes['CODE_SMELL'].count;

    if (sonarqubeDotCom && sonarqubeDotCom.value === 'true') {
      return (
        <AboutAppForSonarQubeDotComLazyLoader
          appState={this.props.appState}
          bugs={bugs}
          codeSmells={codeSmells}
          currentUser={this.props.currentUser}
          customText={customText}
          projectsCount={this.state.projectsCount}
          vulnerabilities={vulnerabilities}
        />
      );
    }

    return (
      <div id="about-page" className="about-page">
        <div className="about-page-container">
          <div className="about-page-entry">
            <div className="about-page-intro">
              <h1 className="big-spacer-bottom">
                {translate('layout.sonar.slogan')}
              </h1>
              {!this.props.currentUser.isLoggedIn &&
                <Link to="/sessions/new" className="button button-active big-spacer-right">
                  {translate('layout.login')}
                </Link>}
              <a
                className="button"
                href="https://redirect.sonarsource.com/doc/home.html"
                target="_blank">
                {translate('about_page.read_documentation')}
              </a>
            </div>

            <div className="about-page-instance">
              <AboutProjects count={this.state.projectsCount} />
              <EntryIssueTypes
                bugs={bugs}
                vulnerabilities={vulnerabilities}
                codeSmells={codeSmells}
              />
            </div>
          </div>

          {customText != null &&
            customText.value &&
            <div
              className="about-page-section"
              dangerouslySetInnerHTML={{ __html: customText.value }}
            />}

          <AboutLanguages />

          <AboutQualityModel />

          <div className="flex-columns">
            <div className="flex-column flex-column-half about-page-group-boxes">
              <AboutCleanCode />
            </div>
            <div className="flex-column flex-column-half about-page-group-boxes">
              <AboutLeakPeriod />
            </div>
          </div>

          <div className="flex-columns">
            <div className="flex-column flex-column-half about-page-group-boxes">
              <AboutQualityGates />
            </div>
            <div className="flex-column flex-column-half about-page-group-boxes">
              <AboutStandards appState={this.props.appState} />
            </div>
          </div>

          <AboutScanners />
        </div>
      </div>
    );
  }
}

const mapStateToProps = state => ({
  appState: getAppState(state),
  currentUser: getCurrentUser(state),
  customText: getSettingValue(state, 'sonar.lf.aboutText'),
  sonarqubeDotCom: getSettingValue(state, 'sonar.lf.sonarqube.com.enabled')
});

const mapDispatchToProps = { fetchAboutPageSettings };

export default connect(mapStateToProps, mapDispatchToProps)(AboutApp);