import React from 'react';
import PropTypes from 'prop-types';
import { Link } from 'react-router';
import TimeAgoWrapper from 'app/components/elements/TimeAgoWrapper';
import Icon from 'app/components/elements/Icon';
import { connect } from 'react-redux';
import * as userActions from 'app/redux/UserReducer';
import Reblog from 'app/components/elements/Reblog';
import Voting from 'app/components/elements/Voting';
import { immutableAccessor } from 'app/utils/Accessors';
import extractContent from 'app/utils/ExtractContent';
import VotesAndComments from 'app/components/elements/VotesAndComments';
import { Map } from 'immutable';
import Author from 'app/components/elements/Author';
import TagList from 'app/components/elements/TagList';
import UserNames from 'app/components/elements/UserNames';
import tt from 'counterpart';
import ImageUserBlockList from 'app/utils/ImageUserBlockList';
import proxifyImageUrl from 'app/utils/ProxifyUrl';
import Userpic, { avatarSize } from 'app/components/elements/Userpic';
import { SIGNUP_URL } from 'shared/constants';

class PostSummary extends React.Component {
    static propTypes = {
        post: PropTypes.string.isRequired,
        pending_payout: PropTypes.string.isRequired,
        total_payout: PropTypes.string.isRequired,
        content: PropTypes.object.isRequired,
        thumbSize: PropTypes.string,
        nsfwPref: PropTypes.string,
    };

    constructor() {
        super();
        this.state = { revealNsfw: false };
        this.onRevealNsfw = this.onRevealNsfw.bind(this);
    }

    shouldComponentUpdate(props, state) {
        return (
            props.thumbSize !== this.props.thumbSize ||
            props.pending_payout !== this.props.pending_payout ||
            props.total_payout !== this.props.total_payout ||
            props.username !== this.props.username ||
            props.nsfwPref !== this.props.nsfwPref ||
            props.blogmode !== this.props.blogmode ||
            state.revealNsfw !== this.state.revealNsfw
        );
    }

    onRevealNsfw(e) {
        e.preventDefault();
        this.setState({ revealNsfw: true });
    }

    render() {
        const { thumbSize, ignore } = this.props;
        const { post, content } = this.props;
        const { account } = this.props;
        if (!content) return null;

        let reblogged_by;
        if (
            content.get('reblogged_by') &&
            content.get('reblogged_by').size > 0
        ) {
            reblogged_by = content.get('reblogged_by').toJS();
        }

        if (reblogged_by) {
            reblogged_by = (
                <div className="articles__resteem">
                    <p className="articles__resteem-text">
                        <span className="articles__resteem-icon">
                            <Icon name="reblog" />
                        </span>
                        <UserNames names={reblogged_by} />{' '}
                        {tt('postsummary_jsx.resteemed')}
                    </p>
                </div>
            );
        }

        // 'account' is the current blog being viewed, if applicable.
        if (account && account != content.get('author')) {
            reblogged_by = (
                <div className="articles__resteem">
                    <p className="articles__resteem-text">
                        <span className="articles__resteem-icon">
                            <Icon name="reblog" />
                        </span>
                        {tt('postsummary_jsx.resteemed')}
                    </p>
                </div>
            );
        }

        const { gray, authorRepLog10, flagWeight, isNsfw } = content
            .get('stats', Map())
            .toJS();
        const pinned = content.get('pinned');
        const p = extractContent(immutableAccessor, content);
        const desc = p.desc;

        const archived = content.get('cashout_time') === '1969-12-31T23:59:59'; // TODO: audit after HF17. #1259
        const full_power = content.get('percent_steem_dollars') === 0;

        let post_url;
        let title_text;
        let comments_url;

        if (content.get('depth') > 0) {
            title_text = tt('g.re_to', { topic: content.get('root_title') });
            post_url =
                '/' +
                content.get('category') +
                '/@' +
                content.get('author') +
                '/' +
                content.get('permlink');
            comments_url = p.link + '#comments';
        } else {
            title_text = p.title;
            post_url = p.link;
            comments_url = post_url + '#comments';
        }

        const content_body = (
            <div className="PostSummary__body entry-content">
                <Link to={post_url}>{desc}</Link>
            </div>
        );
        const content_title = (
            <h2 className="articles__h2 entry-title">
                <Link to={post_url}>
                    {isNsfw && <span className="nsfw-flag">nsfw</span>}
                    {title_text}
                </Link>
            </h2>
        );

        // author and category
        const author_category = (
            <span className="vcard">
                <Userpic account={p.author} />
                <Author
                    author={p.author}
                    authorRepLog10={authorRepLog10}
                    follow={false}
                    mute={false}
                />
                {} {tt('g.in')} <TagList post={p} single />&nbsp;•&nbsp;
                <Link to={post_url}>
                    <TimeAgoWrapper date={p.created} className="updated" />
                </Link>
            </span>
        );

        // New Post Summary heading
        const summary_header = (
            <div className="articles__summary-header">
                <div className="user">
                    {!isNsfw ? (
                        <div className="user__col user__col--left">
                            <a className="user__link" href={'/@' + p.author}>
                                <Userpic
                                    account={p.author}
                                    size={avatarSize.small}
                                />
                            </a>
                        </div>
                    ) : null}
                    <div className="user__col user__col--right">
                        <span className="user__name">
                            <Author
                                author={p.author}
                                authorRepLog10={authorRepLog10}
                                follow={false}
                                mute={false}
                            />
                        </span>

                        <span className="articles__tag-link">
                            {tt('g.in')}&nbsp;<TagList post={p} single />&nbsp;•&nbsp;
                        </span>
                        <Link className="timestamp__link" to={post_url}>
                            <span className="timestamp__time">
                                <TimeAgoWrapper
                                    date={p.created}
                                    className="updated"
                                />
                            </span>

                            {full_power && (
                                <span
                                    className="articles__icon-100"
                                    title={tt('g.powered_up_100')}
                                >
                                    <Icon name="steempower" />
                                </span>
                            )}
                        </Link>
                    </div>
                </div>
                <div className="articles__flag clearfix">
                    <Voting post={post} flag />
                </div>
            </div>
        );

        const content_footer = (
            <div className="PostSummary__footer">
                <Voting post={post} showList={false} />
                <VotesAndComments post={post} commentsLink={comments_url} />
                <span className="PostSummary__time_author_category">
                    {!archived && (
                        <Reblog
                            author={p.author}
                            permlink={p.permlink}
                            parent_author={p.parent_author}
                        />
                    )}
                    <span className="show-for-medium">{author_category}</span>
                </span>
            </div>
        );

        const summary_footer = (
            <div className="articles__summary-footer">
                <Voting post={post} showList={false} />
                <VotesAndComments post={post} commentsLink={comments_url} />
                <span className="PostSummary__time_author_category">
                    {!archived && (
                        <Reblog
                            author={p.author}
                            permlink={p.permlink}
                            parent_author={p.parent_author}
                        />
                    )}
                </span>
            </div>
        );

        const { nsfwPref, username } = this.props;
        const { revealNsfw } = this.state;

        if (isNsfw) {
            if (nsfwPref === 'hide') {
                // user wishes to hide these posts entirely
                return null;
            } else if (nsfwPref === 'warn' && !revealNsfw) {
                // user wishes to be warned, and has not revealed this post
                return (
                    <article
                        className={'PostSummary hentry'}
                        itemScope
                        itemType="http://schema.org/blogPost"
                    >
                        <div className="PostSummary__nsfw-warning">
                            {summary_header}
                            <span className="nsfw-flag">
                                nsfw
                            </span>&nbsp;&nbsp;<span
                                className="ptc"
                                role="button"
                                onClick={this.onRevealNsfw}
                            >
                                <a>{tt('postsummary_jsx.reveal_it')}</a>
                            </span>{' '}
                            {tt('g.or') + ' '}
                            {username ? (
                                <span>
                                    {tt('postsummary_jsx.adjust_your')}{' '}
                                    <Link to={`/@${username}/settings`}>
                                        {tt(
                                            'postsummary_jsx.display_preferences'
                                        )}
                                    </Link>.
                                </span>
                            ) : (
                                <span>
                                    <a href={SIGNUP_URL}>
                                        {tt(
                                            'postsummary_jsx.create_an_account'
                                        )}
                                    </a>{' '}
                                    {tt(
                                        'postsummary_jsx.to_save_your_preferences'
                                    )}.
                                </span>
                            )}
                            {summary_footer}
                        </div>
                    </article>
                );
            }
        }

        const userBlacklisted = ImageUserBlockList.includes(p.author);

        let thumb = null;
        if (!gray && p.image_link && !userBlacklisted) {
            // on mobile, we always use blog layout style -- there's no toggler
            // on desktop, we offer a choice of either blog or list
            // if blogmode is false, output an image with a srcset
            // which has the 256x512 for whatever the large breakpoint is where the list layout is used
            // and the 640 for lower than that

            const blogSize = proxifyImageUrl(p.image_link, '640x480').replace(
                / /g,
                '%20'
            );

            if (this.props.blogmode) {
                thumb = (
                    <span className="articles__feature-img-container">
                        <img className="articles__feature-img" src={blogSize} />
                    </span>
                );
            } else {
                const listSize = proxifyImageUrl(
                    p.image_link,
                    '256x512'
                ).replace(/ /g, '%20');

                thumb = (
                    <span className="articles__feature-img-container">
                        <picture className="articles__feature-img">
                            <source
                                srcSet={listSize}
                                media="(min-width: 1000px)"
                            />
                            <img srcSet={blogSize} />
                        </picture>
                    </span>
                );
            }
        }

        // A post is hidden if it's marked "gray" or "ignore" and it's not
        // pinned.
        const commentClasses = [];
        if (!pinned && (gray || ignore)) commentClasses.push('downvoted'); // rephide

        return (
            <div className="articles__summary">
                {reblogged_by}
                {summary_header}
                <div
                    className={
                        'articles__content hentry' +
                        (thumb ? ' with-image ' : ' ') +
                        commentClasses.join(' ')
                    }
                    itemScope
                    itemType="http://schema.org/blogPost"
                >
                    {thumb ? (
                        <div className="articles__content-block articles__content-block--img">
                            <Link className="articles__link" to={post_url}>
                                {thumb}
                            </Link>
                        </div>
                    ) : null}
                    <div className="articles__content-block articles__content-block--text">
                        {content_title}
                        {content_body}
                        {this.props.blogmode ? null : summary_footer}
                    </div>
                    {this.props.blogmode ? summary_footer : null}
                </div>
            </div>
        );
    }
}

export default connect(
    (state, props) => {
        const { post } = props;
        const content = state.global.get('content').get(post);
        let pending_payout = 0;
        let total_payout = 0;
        if (content) {
            pending_payout = content.get('pending_payout_value');
            total_payout = content.get('total_payout_value');
        }
        return {
            post,
            content,
            pending_payout: pending_payout
                ? pending_payout.toString()
                : pending_payout,
            total_payout: total_payout ? total_payout.toString() : total_payout,
            username:
                state.user.getIn(['current', 'username']) ||
                state.offchain.get('account'),
            blogmode: state.app.getIn(['user_preferences', 'blogmode']),
        };
    },

    dispatch => ({
        dispatchSubmit: data => {
            dispatch(userActions.usernamePasswordLogin({ ...data }));
        },
        clearError: () => {
            dispatch(userActions.loginError({ error: null }));
        },
    })
)(PostSummary);
