import React, {Component} from "react";
import { Redirect } from 'react-router-dom';
import { resolve } from 'url';
import {Container, Row, Col, Collapse, Card, CardHeader, CardBody, Table} from "reactstrap";
import { grades } from '../../Util';

class Result extends Component {

    constructor(props) {
        super(props);
        this.state = {
            candidates: [],
            title: null,
            numGrades: 0,
            colSizeCandidateLg: 4,
            colSizeCandidateMd: 6,
            colSizeCandidateXs: 12,
            colSizeGradeLg: 1,
            colSizeGradeMd: 1,
            colSizeGradeXs: 1,
            collapseGraphics: false,
            collapseProfiles: false,
            redirectLost: false,
            electionGrades: grades
        };
    }

    handleErrors = (response) => {
      if (!response.ok) {
          response.json().then( response => {
              this.setState(state => ({
                  redirectLost: '/unknown-election/' + encodeURIComponent(response)}));
          })
          throw Error(response);
      }
      return response;
    }

    resultsToState = (response) => {
        const candidates = response.map(c => ({
            id: c.id, label: c.name, profile: c.profile, grade:c.grade, score: c.score
        }));
       this.setState(state => ({candidates: candidates}));
       return response;
    }

    detailsToState = (response) => {
        const numGrades = response.num_grades;
        const colSizeGradeLg = Math.floor((12 - this.state.colSizeCandidateLg) / numGrades);
        const colSizeGradeMd = Math.floor((12 - this.state.colSizeCandidateMd) / numGrades);
        const colSizeGradeXs = Math.floor((12 - this.state.colSizeCandidateXs) / numGrades);
        this.setState(state => ({
            title: response.title,
            numGrades: numGrades,
            colSizeGradeLg: colSizeGradeLg,
            colSizeGradeMd: colSizeGradeMd,
            colSizeGradeXs: colSizeGradeXs,
            colSizeCandidateLg: ((12 - colSizeGradeLg * numGrades) > 0) ? (12 - colSizeGradeLg * numGrades) : 12,
            colSizeCandidateMd: ((12 - colSizeGradeMd * numGrades) > 0) ? (12 - colSizeGradeMd * numGrades) : 12,
            colSizeCandidateXs: ((12 - colSizeGradeXs * numGrades) > 0) ? (12 - colSizeGradeXs * numGrades) : 12,
            electionGrades: grades.slice(0, numGrades)
        }));
        return response;
    }

    componentDidMount() {
        // FIXME we should better handling logs

        const electionSlug  = this.props.match.params.handle;

        // get details of the election
        const detailsEndpoint = resolve(process.env.REACT_APP_SERVER_URL,
                                 'election/get/'.concat(electionSlug));

        fetch(detailsEndpoint)
              .then(this.handleErrors)
              .then(response => response.json())
              .then(this.detailsToState)
              .catch(error => console.log(error));

        // get results of the election
        const resultsEndpoint = resolve(process.env.REACT_APP_SERVER_URL,
                                 'election/results/'.concat(electionSlug));

        fetch(resultsEndpoint)
              .then(this.handleErrors)
              .then(response => response.json())
              .then(this.resultsToState)
              .catch(error => console.log(error));

    }

    toggleGraphics = () => {
        this.setState(state => ({collapseGraphics: !state.collapseGraphics}));
    };

    toggleProfiles = () => {
        this.setState(state => ({collapseProfiles: !state.collapseProfiles}));
    };

    render() {

        const { redirectLost,
                candidates,
                electionGrades
              } = this.state;

        if (redirectLost) {
          return (<Redirect to={redirectLost}/>)
        }

        return (
            <Container>
                <Row>
                    <Col xs="12"><h1>{this.state.title}</h1></Col>
                </Row>

                <Row className="mt-5">
                    <Col><h1>Résultat du vote :</h1>
                        <ol>{candidates.map((candidate, i) => {
                            return (<li key={i} className="mt-2">{candidate.label}<span
                                className="badge badge-dark mr-2 mt-2">{candidate.score}%</span><span
                                className="badge badge-light mr-2 mt-2" style={{
                                backgroundColor: electionGrades[candidate.grade].color,
                                color: "#fff"
                            }}>{grades[candidate.grade].label}</span></li>);
                        })}</ol>
                    </Col>
                </Row>

                <Row className="mt-5">
                    <Col>
                        <Card className="bg-light text-primary">
                            <CardHeader className="pointer" onClick={this.toggleGraphics}>
                                <h4 className={"m-0 panel-title " + (this.state.collapseGraphics ? "collapsed" : "")}>Graphique</h4>
                            </CardHeader>
                            <Collapse isOpen={this.state.collapseGraphics}>
                                <CardBody className="pt-5">
                                    <div>
                                        <div className="median"
                                             style={{height: (candidates.length * 28) + 30}}/>
                                        <table style={{width: "100%"}}><tbody>
                                            {candidates.map((candidate, i) => {
                                                return (<tr key={i}>
                                                    <td style={{width: "30px"}}>{i + 1}</td>
                                                    {/*candidate.label*/}
                                                    <td>
                                                        <table style={{width: "100%"}}>
                                                            <tbody>
                                                            <tr>
                                                                {candidate.profile.map((value, i) => {
                                                                    if (value > 0) {
                                                                        let percent = value + "%";
                                                                        if (i === 0) {
                                                                            percent = "auto";
                                                                        }
                                                                        return (<td key={i} style={{
                                                                            width: percent,
                                                                            backgroundColor: this.state.electionGrades[i].color
                                                                        }}>&nbsp;</td>);
                                                                    }else{
                                                                        return null
                                                                    }

                                                                })}</tr>
                                                            </tbody>
                                                        </table>
                                                    </td>
                                                </tr>)
                                            })}</tbody></table>

                                    </div>
                                    <div className="mt-4">
                                        <small>
                                            {candidates.map((candidate, i) => {
                                                return (
                                                    <span key={i}>{(i > 0) ? ", " : ""}<b>{i + 1}</b>: {candidate.label}</span>);
                                            })}
                                        </small>
                                    </div>
                                    <div className="mt-2">
                                        <small>
                                          {electionGrades.map((grade, i) => {
                                              return (
                                                    <span key={i} className="badge badge-light mr-2 mt-2" style={{
                                                        backgroundColor: grade.color,
                                                        color: "#fff"
                                                    }}>{grade.label}</span>
                                              )})}
                                        </small>
                                    </div>
                                </CardBody>
                            </Collapse>
                        </Card>
                    </Col>
                </Row>
                <Row className="mt-3">
                    <Col>
                        <Card className="bg-light text-primary">
                            <CardHeader className="pointer" onClick={this.toggleProfiles}>
                                <h4 className={"m-0 panel-title " + (this.state.collapseProfiles ? "collapsed" : "")}>Profils
                                    de mérites</h4>
                            </CardHeader>
                            <Collapse isOpen={this.state.collapseProfiles}>
                                <CardBody>
                                    <div className="table-responsive">
                                        <Table className="profiles">
                                            <thead>
                                            <tr>
                                                <th>#</th>
                                                {electionGrades.map((grade, i) => {
                                                    return (<th key={i}><span className="badge badge-light" style={{
                                                        backgroundColor: grade.color,
                                                        color: "#fff"
                                                    }}>{grade.label} </span></th>);
                                                })}</tr>
                                            </thead>
                                            <tbody>{candidates.map((candidate, i) => {
                                                return (<tr key={i}>
                                                    <td>{i + 1}</td>
                                                    {/*candidate.label*/}
                                                    {candidate.profile.map((value, i) => {
                                                        return (<td key={i}>{value}%</td>);
                                                    })}
                                                </tr>)
                                            })}</tbody>
                                        </Table>
                                    </div>
                                    <small>{candidates.map((candidate, i) => {
                                        return (<span
                                            key={i}>{(i > 0) ? ", " : ""}<b>{i + 1}</b>: {candidate.label}</span>);
                                    })}</small>
                                </CardBody>
                            </Collapse>
                        </Card>
                    </Col>
                </Row>
            </Container>
        )
    }
}

export default Result;