import React, { Component, PropTypes } from 'react';
import reactMixin                      from 'react-mixin';
import { ListenerMixin }               from 'reflux';
import _                               from 'lodash';
import Mozaik                          from 'mozaik/browser';
const { Gauge }                        = Mozaik.Component;


class PullRequestsGauge extends Component {
    constructor(props) {
        super(props);

        this.state = { pullRequests: [] };
    }

    getApiRequest() {
        const { repository } = this.props;

        return {
            id:     `github.pullRequests.${ repository }`,
            params: { repository }
        };
    }

    onApiData(pullRequests) {
        this.setState({ pullRequests });
    }

    render() {
        const { repository, thresholds, title } = this.props;
        const { pullRequests }                  = this.state;

        let titleNode = title === undefined ? (
            <span>
                <span className="widget__header__subject">{repository}</span> pull requests
            </span>
        ) : title;

        let cappedValue    = Math.min(pullRequests.length, _.max(thresholds.map(threshold => threshold.threshold)));
        let message        = null;
        let normThresholds = thresholds.map(threshold => {
            if (message === null && cappedValue <= threshold.threshold) {
                message = threshold.message;
            }

            return {
                upperBound: threshold.threshold,
                color:      threshold.color
            };
        });

        return (
            <div>
                <div className="widget__header">
                    {titleNode}
                    <span className="widget__header__count">
                        {pullRequests.length}
                    </span>
                    <i className="fa fa-github-alt"/>
                </div>
                <div className="widget__body">
                    <div className="github__pull-requests_gauge_chart">
                        <Gauge
                            donutRatio={0.65}
                            spacing={{ top: 45, right: 45, left: 45 }}
                            ranges={normThresholds}
                            value={pullRequests.length}
                        />
                    </div>
                    <div className="github__pull-requests_gauge_message">
                        {message}
                    </div>
                </div>
            </div>
        );
    }
}

PullRequestsGauge.displayName = 'PullRequestsGauge';

PullRequestsGauge.propTypes = {
    repository: PropTypes.string.isRequired,
    title:      PropTypes.string,
    thresholds: PropTypes.arrayOf(PropTypes.shape({
        threshold: PropTypes.number.isRequired,
        color:     PropTypes.string.isRequired,
        message:   PropTypes.string.isRequired
    })).isRequired
};

PullRequestsGauge.defaultProps = {
    thresholds: [
        { threshold: 3,  color: '#85e985', message: 'good job!' },
        { threshold: 5,  color: '#ecc265', message: 'you should consider reviewing' },
        { threshold: 10, color: '#f26a3f', message: 'pull requests overflow' }
    ]
};

reactMixin(PullRequestsGauge.prototype, ListenerMixin);
reactMixin(PullRequestsGauge.prototype, Mozaik.Mixin.ApiConsumer);


export default PullRequestsGauge;