import Head from 'next/head';
import React from 'react';
import {connect} from 'react-redux';
import {
    Button,
    Card,
    CardBody,
    Col,
    Container,
    Input,
    InputGroup,
    InputGroupAddon,
    ListGroup,
    ListGroupItem,
    Modal,
    ModalBody,
    ModalFooter,
    ModalHeader,
    Row,
    Table
} from 'reactstrap';

import {ErrorPageComponent} from '../js/components/ErrorComponents';
import {Footer} from '../js/components/Footer';
import {TurniereNavigation} from '../js/components/Navigation';
import {BigImage} from '../js/components/BigImage';
import {getState} from '../js/api';
import {getRequest} from '../js/redux/backendApi';

import 'bootstrap/dist/css/bootstrap.min.css';

import '../static/css/everypage.css';
import '../static/css/tournament.css';

class PrivateTournamentPage extends React.Component {
    render() {
        const {id, description, isPublic, code, ownerUsername, playoffStages} = this.props.tournament;
        const {isSignedIn, username} = this.props;

        // TODO: Change href-prop of the anchor tag to contain the tournament code
        return (<div className='pb-5'>
            <Container>
                <EditButton id={id} ownerName={ownerUsername} isSignedIn={isSignedIn} username={username}/>
                <p>{description}</p>
                <ListGroup>
                    <ListGroupItem>
                        {isPublic ? 'Das Turnier ist öffentlich.' : 'Das Turnier ist privat.'}
                    </ListGroupItem>
                    <ListGroupItem>Turnier-Code: <b>{code}</b></ListGroupItem>
                    <ListGroupItem>von <b>{ownerUsername}</b></ListGroupItem>
                </ListGroup>
            </Container>
            <div className='stages pt-5'>
                {playoffStages.map(stage => <Stage isSignedIn={isSignedIn} isOwner={username === ownerUsername}
                    level={getLevelName(stage.level)} matches={stage.matches}
                    key={stage.level}/>)}
            </div>
        </div>);
    }
}

function mapStateToTournamentPageProperties(state) {
    const {isSignedIn, username} = state.userinfo;
    return {isSignedIn, username};
}

const TournamentPage = connect(mapStateToTournamentPageProperties)(PrivateTournamentPage);

function EditButton(props) {
    const {id, ownerName, isSignedIn, username} = props;

    if (isSignedIn && ownerName === username) {
        return (<a href={'/t/' + id + '/edit'} className='btn btn-outline-secondary'>Turnier bearbeiten</a>);
    } else {
        return null;
    }
}

function getLevelName(levelNumber) {
    const names = ['Finale', 'Halbfinale', 'Viertelfinale', 'Achtelfinale'];
    if (levelNumber < names.length) {
        return names[levelNumber];
    } else {
        return Math.pow(2, levelNumber) + 'tel-Finale';
    }
}

function Stage(props) {
    const {isSignedIn, isOwner} = props;

    return (<div>
        <Container className='py-5'>
            <h1 className='custom-font'>{props.level}</h1>
            <Row>
                {props.matches.map((match => (
                    <Col className='minw-25' key={match.id}><Match match={match} isSignedIn={isSignedIn}
                        isOwner={isOwner}/></Col>)))}
            </Row>
        </Container>
    </div>);
}

class Match extends React.Component {
    constructor(props) {
        super(props);
        this.state = {
            modal: false
        };
        this.toggleModal = this.toggleModal.bind(this);
    }

    toggleModal() {
        const {isSignedIn, isOwner} = this.props;

        if (isSignedIn && isOwner) {
            this.setState({modal: !this.state.modal});
        }
    }

    render() {
        let cardClass;
        let smallMessage;
        let borderClass;
        // possible states: single_team not_ready not_started in_progress team1_won team2_won undecided
        switch (this.props.match.state) {
        case 'in_progress':
            cardClass = 'table-warning';
            borderClass = 'border-warning';
            smallMessage = 'Spiel läuft';
            break;
        case 'team1_won':
            cardClass = 'table-success';
            borderClass = 'border-success';
            smallMessage = 'Gewinner: ' + this.props.match.team1;
            break;
        case 'team2_won':
            cardClass = 'table-success';
            borderClass = 'border-success';
            smallMessage = 'Gewinner: ' + this.props.match.team2;
            break;
        case 'single_team':
            cardClass = 'table-success';
            borderClass = 'border-success';
            smallMessage = 'kein Gegner, Team kommt weiter';
            break;
        case 'not_ready':
            smallMessage = 'Spiel kann noch nicht gestartet werden';
            break;
        case 'not_started':
            smallMessage = 'Spiel kann gestartet werden';
            break;
        case 'undecided':
            cardClass = 'table-success';
            borderClass = 'border-success';
            smallMessage = 'Spiel beendet, unentschieden';
            break;
        }
        return (<div className='mb-3'>
            <Card className='shadow-sm match' onClick={this.toggleModal}>
                <CardBody className={borderClass + ' border py-2 ' + cardClass}>
                    <MatchTable match={this.props.match} borderColor={borderClass}/>
                </CardBody>
            </Card>
            <small className='text-muted'>{smallMessage}</small>
            <MatchModal title='Match' isOpen={this.state.modal} toggle={this.toggleModal} match={this.props.match}/>
        </div>);
    }
}

function MatchModal(props) {
    let title;
    let actionButton = '';
    // possible states: single_team not_ready not_started in_progress team1_won team2_won undecided
    switch (props.match.state) {
    case 'in_progress':
        title = 'Spiel läuft';
        actionButton = <Button color='primary' onClick={props.toggle}>Spiel beenden</Button>;
        break;
    case 'team1_won':
        title = 'Spiel beendet';
        break;
    case 'team2_won':
        title = 'Spiel beendet';
        break;
    case 'single_team':
        title = 'kein Gegner, Team kommt weiter';
        break;
    case 'not_ready':
        title = 'Spiel kann noch nicht gestartet werden';
        break;
    case 'not_started':
        title = 'Spiel kann gestartet werden';
        actionButton = <Button color='primary' onClick={props.toggle}>Spiel starten</Button>;
        break;
    case 'undecided':
        title = 'Spiel beendet';
        break;
    }
    return (<Modal isOpen={props.isOpen} toggle={props.toggle}>
        <ModalHeader toggle={props.toggle}>{title}</ModalHeader>
        <ModalBody>
            {props.match.state === 'in_progress' ? <EditableMatchTable match={props.match}/> :
                <MatchTable match={props.match}/>}
        </ModalBody>
        <ModalFooter>
            {actionButton}
            <Button color='secondary' onClick={props.toggle}>Abbrechen</Button>
        </ModalFooter>
    </Modal>);
}

function MatchTable(props) {
    let team1Class;
    let team2Class;
    // possible states: single_team not_ready not_started in_progress team1_won team2_won undecided
    switch (props.match.state) {
    case 'in_progress':
        break;
    case 'team1_won':
        team1Class = 'font-weight-bold';
        team2Class = 'lost-team';
        break;
    case 'team2_won':
        team1Class = 'lost-team';
        team2Class = 'font-weight-bold';
        break;
    case 'single_team':
        team2Class = 'text-muted';
        break;
    case 'not_ready':
        break;
    case 'not_started':
        break;
    case 'undecided':
        break;
    }
    if (props.match.state === 'single_team') {
        return (<Table className='mb-0'>
            <tbody>
                <tr>
                    <td className={'border-top-0 ' + team1Class}>{props.match.team1}</td>
                </tr>
                <tr>
                    <td className={props.borderColor + ' ' + team2Class}>kein Gegner</td>
                </tr>
            </tbody>
        </Table>);
    } else {
        return (<Table className='mb-0'>
            <tbody>
                <tr>
                    <th className='stage border-top-0'>{props.match.scoreTeam1}</th>
                    <td className={'border-top-0 ' + team1Class}>{props.match.team1}</td>
                </tr>
                <tr>
                    <th className={'stage ' + props.borderColor}>{props.match.scoreTeam2}</th>
                    <td className={props.borderColor + ' ' + team2Class}>{props.match.team2}</td>
                </tr>
            </tbody>
        </Table>);
    }
}

function EditableMatchTable(props) {
    return (<Table className='mb-0'>
        <tbody>
            <tr>
                <td className='scoreInput border-top-0'>
                    <ScoreInput score={props.match.scoreTeam1}/>
                </td>
                <td className='align-middle border-top-0'>{props.match.team1}</td>
            </tr>
            <tr>
                <td className='scoreInput'>
                    <ScoreInput score={props.match.scoreTeam2}/>
                </td>
                <td className='align-middle'>{props.match.team2}</td>
            </tr>
        </tbody>
    </Table>);
}

class ScoreInput extends React.Component {
    constructor(props) {
        super(props);
        this.state = {score: this.props.score};
        this.updateScore = this.updateScore.bind(this);
        this.increaseScore = this.increaseScore.bind(this);
        this.decreaseScore = this.decreaseScore.bind(this);
    }

    updateScore(event) {
        this.setState({score: event.target.value});
    }

    increaseScore() {
        this.setState({score: Number(this.state.score) + 1});
    }

    decreaseScore() {
        this.setState({score: Number(this.state.score) - 1});
    }

    render() {
        return (<InputGroup>
            <InputGroupAddon addonType="prepend"><Button onClick={this.decreaseScore} color='danger'
                outline={true}>-1</Button></InputGroupAddon>
            <Input className='font-weight-bold' value={this.state.score} onChange={this.updateScore} type='number'
                step='1' placeholder='0'/>
            <InputGroupAddon addonType="append"><Button onClick={this.increaseScore}
                color='success'>+1</Button></InputGroupAddon>
        </InputGroup>);
    }
}

function convertTournament(apiTournament) {
    let groupStage = null;
    const playoffStages = [];
    for (const stage of apiTournament.stages) {
        if (stage.groups.length > 0) {
            // group stage
            groupStage = {groups: stage.groups.map(group => convertGroup(group))};
        } else {
            // playoff stage
            playoffStages.push({
                id: stage.id, level: stage.level, matches: stage.matches.map(match => convertMatch(match))
            });
        }
    }
    return {
        id: apiTournament.id,
        code: apiTournament.code,
        description: apiTournament.description,
        name: apiTournament.name,
        isPublic: apiTournament.public,
        ownerUsername: apiTournament.owner_username,
        groupStage: groupStage,
        playoffStages: playoffStages
    };
}

function convertGroup(apiGroup) {
    return {
        id: apiGroup.id,
        number: apiGroup.number,
        scores: apiGroup.group_scores,
        matches: apiGroup.matches.map(match => convertMatch(match))
    };
}

function convertMatch(apiMatch) {
    const result = {
        id: apiMatch.id, state: apiMatch.state
    };

    if (apiMatch.match_scores.length === 2) {
        result.team1 = apiMatch.match_scores[0].team.name;
        result.scoreTeam1 = apiMatch.match_scores[0].points;
        result.team2 = apiMatch.match_scores[1].team.name;
        result.scoreTeam2 = apiMatch.match_scores[1].points;
    } else if (apiMatch.match_scores.length === 1) {
        result.team1 = apiMatch.match_scores[0].team.name;
        result.scoreTeam1 = apiMatch.match_scores[0].points;
        result.team2 = 'TBD';
        result.scoreTeam2 = 0;
    } else {
        result.team1 = 'TBD';
        result.scoreTeam1 = 0;
        result.team2 = 'TBD';
        result.scoreTeam2 = 0;
    }

    return result;
}

class Main extends React.Component {
    static async getInitialProps({query}) {
        return {query};
    }

    constructor(props) {
        super(props);

        this.state = {
            tournament: null
        };
    }

    componentDidMount() {
        const code = this.props.query.code;

        getRequest(getState(), '/tournaments/' + code)
            .then(response => {
                this.setState({status: response.status, tournament: convertTournament(response.data)});
            })
            .catch(err => {
                if (err.response) {
                    this.setState({status: err.response.status});
                } else {
                    this.setState({status: -1});
                }
            });
    }


    render() {
        const tournamentName = this.state.tournament === null ? 'Turnier' : this.state.tournament.name;

        const {status, tournament} = this.state;

        if (status === 200) {
            return (<div>
                <Head>
                    <title>{tournamentName}: turnie.re</title>
                </Head>
                <TurniereNavigation/>
                <BigImage text={tournamentName}/>
                <TournamentPage tournament={tournament}/>
                <Footer/>
            </div>);
        } else {
            return <ErrorPageComponent code={status}/>;
        }
    }
}

export default Main;