import React from 'react';
import PropTypes from 'prop-types';
import { Link } from 'react-router';
import { Switch, Chip, ListItem } from 'react-mdl';
import Progress from './progress';
import { calc, styles as commonStyles } from '../common';

import styles from './feature.scss';

const Feature = ({
    feature,
    toggleFeature,
    settings,
    metricsLastHour = { yes: 0, no: 0, isFallback: true },
    metricsLastMinute = { yes: 0, no: 0, isFallback: true },
}) => {
    const { name, description, enabled, strategies } = feature;

    const { showLastHour = false } = settings;
    const isStale = showLastHour
        ? metricsLastHour.isFallback
        : metricsLastMinute.isFallback;

    const percent =
        1 *
        (showLastHour
            ? calc(
                  metricsLastHour.yes,
                  metricsLastHour.yes + metricsLastHour.no,
                  0
              )
            : calc(
                  metricsLastMinute.yes,
                  metricsLastMinute.yes + metricsLastMinute.no,
                  0
              ));

    const strategiesToShow = Math.min(strategies.length, 3);
    const remainingStrategies = strategies.length - strategiesToShow;

    const strategyChips =
        strategies &&
        strategies.slice(0, strategiesToShow).map((s, i) => (
            <Chip className={styles.strategyChip} key={i}>
                {s.name}
            </Chip>
        ));
    const summaryChip = remainingStrategies > 0 && (
        <Chip className={styles.strategyChip}>+{remainingStrategies}</Chip>
    );

    return (
        <ListItem twoLine>
            <span className={styles.listItemMetric}>
                <Progress
                    strokeWidth={15}
                    percentage={percent}
                    isFallback={isStale}
                />
            </span>
            <span className={styles.listItemToggle}>
                <Switch
                    title={`Toggle ${name}`}
                    key="left-actions"
                    onChange={() => toggleFeature(name)}
                    checked={enabled}
                />
            </span>
            <span
                className={[
                    'mdl-list__item-primary-content',
                    styles.listItemLink,
                ].join(' ')}
            >
                <Link
                    to={`/features/view/${name}`}
                    className={[
                        commonStyles.listLink,
                        commonStyles.truncate,
                    ].join(' ')}
                >
                    {name}
                    <span
                        className={[
                            'mdl-list__item-sub-title',
                            commonStyles.truncate,
                        ].join(' ')}
                    >
                        {description}
                    </span>
                </Link>
            </span>
            <span
                className={[
                    styles.listItemStrategies,
                    commonStyles.hideLt920,
                ].join(' ')}
            >
                {strategyChips}
                {summaryChip}
            </span>
        </ListItem>
    );
};

Feature.propTypes = {
    feature: PropTypes.object,
    toggleFeature: PropTypes.func,
    settings: PropTypes.object,
    metricsLastHour: PropTypes.object,
    metricsLastMinute: PropTypes.object,
};

export default Feature;