// Copyright (c) 2016 Mattermost, Inc. All Rights Reserved.
// See License.txt for license information.

import LineChart from './line_chart.jsx';
import StatisticCount from './statistic_count.jsx';
import TableChart from './table_chart.jsx';

import AdminStore from 'stores/admin_store.jsx';
import AnalyticsStore from 'stores/analytics_store.jsx';

import * as Utils from 'utils/utils.jsx';
import * as AsyncClient from 'utils/async_client.jsx';
import Constants from 'utils/constants.jsx';
const StatTypes = Constants.StatTypes;

import {formatPostsPerDayData, formatUsersWithPostsPerDayData} from './system_analytics.jsx';
import {FormattedMessage, FormattedDate} from 'react-intl';

import React from 'react';

export default class TeamAnalytics extends React.Component {
    static get propTypes() {
        return {
            params: React.PropTypes.object.isRequired
        };
    }

    constructor(props) {
        super(props);

        this.onChange = this.onChange.bind(this);
        this.onAllTeamsChange = this.onAllTeamsChange.bind(this);

        this.state = {
            team: AdminStore.getTeam(this.props.params.team),
            stats: AnalyticsStore.getAllTeam(this.props.params.team)
        };
    }

    componentDidMount() {
        AnalyticsStore.addChangeListener(this.onChange);
        AdminStore.addAllTeamsChangeListener(this.onAllTeamsChange);

        this.getData(this.props.params.team);
    }

    getData(id) {
        AsyncClient.getStandardAnalytics(id);
        AsyncClient.getPostsPerDayAnalytics(id);
        AsyncClient.getUsersPerDayAnalytics(id);
        AsyncClient.getRecentAndNewUsersAnalytics(id);
    }

    componentWillUnmount() {
        AnalyticsStore.removeChangeListener(this.onChange);
        AdminStore.removeAllTeamsChangeListener(this.onAllTeamsChange);
    }

    componentWillReceiveProps(nextProps) {
        this.getData(nextProps.params.team);
        this.setState({
            stats: AnalyticsStore.getAllTeam(nextProps.params.team)
        });
    }

    shouldComponentUpdate(nextProps, nextState) {
        if (!Utils.areObjectsEqual(nextState.stats, this.state.stats)) {
            return true;
        }

        if (!Utils.areObjectsEqual(nextProps.params.team, this.props.params.team)) {
            return true;
        }

        return false;
    }

    onChange() {
        this.setState({
            stats: AnalyticsStore.getAllTeam(this.props.params.team)
        });
    }

    onAllTeamsChange() {
        this.setState({
            team: AdminStore.getTeam(this.props.params.team)
        });
    }

    render() {
        if (!this.state.team || !this.state.stats) {
            return null;
        }

        const stats = this.state.stats;
        const postCountsDay = formatPostsPerDayData(stats[StatTypes.POST_PER_DAY]);
        const userCountsWithPostsDay = formatUsersWithPostsPerDayData(stats[StatTypes.USERS_WITH_POSTS_PER_DAY]);
        const recentActiveUsers = formatRecentUsersData(stats[StatTypes.RECENTLY_ACTIVE_USERS]);
        const newlyCreatedUsers = formatNewUsersData(stats[StatTypes.NEWLY_CREATED_USERS]);

        return (
            <div className='wrapper--fixed team_statistics'>
                <h3>
                    <FormattedMessage
                        id='analytics.team.title'
                        defaultMessage='Team Statistics for {team}'
                        values={{
                            team: this.state.team.name
                        }}
                    />
                </h3>
                <div className='row'>
                    <StatisticCount
                        title={
                            <FormattedMessage
                                id='analytics.team.totalUsers'
                                defaultMessage='Total Users'
                            />
                        }
                        icon='fa-user'
                        count={stats[StatTypes.TOTAL_USERS]}
                    />
                    <StatisticCount
                        title={
                            <FormattedMessage
                                id='analytics.team.publicChannels'
                                defaultMessage='Public Channels'
                            />
                        }
                        icon='fa-users'
                        count={stats[StatTypes.TOTAL_PUBLIC_CHANNELS]}
                    />
                    <StatisticCount
                        title={
                            <FormattedMessage
                                id='analytics.team.privateGroups'
                                defaultMessage='Private Groups'
                            />
                        }
                        icon='fa-globe'
                        count={stats[StatTypes.TOTAL_PRIVATE_GROUPS]}
                    />
                    <StatisticCount
                        title={
                            <FormattedMessage
                                id='analytics.team.totalPosts'
                                defaultMessage='Total Posts'
                            />
                        }
                        icon='fa-comment'
                        count={stats[StatTypes.TOTAL_POSTS]}
                    />
                </div>
                <div className='row'>
                    <LineChart
                        title={
                            <FormattedMessage
                                id='analytics.team.totalPosts'
                                defaultMessage='Total Posts'
                            />
                        }
                        data={postCountsDay}
                        options={{
                            legend: {
                                display: false
                            }
                        }}
                        width='740'
                        height='225'
                    />
                </div>
                <div className='row'>
                    <LineChart
                        title={
                            <FormattedMessage
                                id='analytics.team.activeUsers'
                                defaultMessage='Active Users With Posts'
                            />
                        }
                        data={userCountsWithPostsDay}
                        options={{
                            legend: {
                                display: false
                            }
                        }}
                        width='740'
                        height='225'
                    />
                </div>
                <div className='row'>
                    <TableChart
                        title={
                            <FormattedMessage
                                id='analytics.team.recentUsers'
                                defaultMessage='Recent Active Users'
                            />
                        }
                        data={recentActiveUsers}
                    />
                    <TableChart
                        title={
                            <FormattedMessage
                                id='analytics.team.newlyCreated'
                                defaultMessage='Newly Created Users'
                            />
                        }
                        data={newlyCreatedUsers}
                    />
                </div>
            </div>
        );
    }
}

export function formatRecentUsersData(data) {
    if (data == null) {
        return [];
    }

    const formattedData = data.map((user) => {
        const item = {};
        item.name = user.username;
        item.value = (
            <FormattedDate
                value={user.last_activity_at}
                day='numeric'
                month='long'
                year='numeric'
                hour12={true}
                hour='2-digit'
                minute='2-digit'
            />
        );
        item.tip = user.email;

        return item;
    });

    return formattedData;
}

export function formatNewUsersData(data) {
    if (data == null) {
        return [];
    }

    const formattedData = data.map((user) => {
        const item = {};
        item.name = user.username;
        item.value = (
            <FormattedDate
                value={user.create_at}
                day='numeric'
                month='long'
                year='numeric'
                hour12={true}
                hour='2-digit'
                minute='2-digit'
            />
        );
        item.tip = user.email;

        return item;
    });

    return formattedData;
}