const preact = require('preact');
const range = require('lodash/range');
const reactStringReplace = require('react-string-replace');

const { INFO } = require('./../constants');
const { convertItem, removeTier } = require('../utils');
const { tutorialStage } = require('../tutorial.utils');
const shapes = require('./shapes');


class InfoComponent extends preact.Component {
    shouldComponentUpdate(newProps) {
        if (newProps.tutorial !== this.props.tutorial) return true;
        // We don't care about info during tutorial
        if (newProps.tutorial && this.props.instance.time_control === 'Practice'
            && this.props.instance.rounds.length === 1) return false;
        if (newProps.info !== this.props.info) return true;
        return false;
    }

    render(args) {
        const {
            // Variables that will change
            info,
            tutorial,

            // Static
            player, // Only used for colour calcs which will be update if info changes
            ws,
            itemInfo,
            instance, // Only used for instance id
            // functions
            setInfo,
            setTutorialNull,
        } = args;

        function Info() {
            if (tutorial) {
                const tutorialStageInfo = tutorialStage(tutorial, ws, setTutorialNull, instance);
                if (tutorialStageInfo) return tutorialStageInfo;
            }
            if (!info) return false;
            if (info.includes('constructName')) {
                return (
                    <div>
                        <h2> {info.replace('constructName ', '')} </h2>
                        <p> This is the name of your construct. <br />
                            Names are randomly generated and are purely cosmetic. <br />
                            You can change change your construct name in the <b>RESHAPE</b> tab outside of games.
                        </p>
                    </div> 
                );
            }

            if (info.includes('constructAvatar')) {
                return (
                    <div>
                        <h2> {info.replace('constructAvatar ', '')} </h2>
                        <p> This is your construct avatar. <br />
                            Avatars are randomly generated and are purely cosmetic. <br />
                            You can change your construct avatar in the <b>RESHAPE</b> tab outside of games.
                        </p>
                    </div>
                );
            }
            const fullInfo = itemInfo.items.find(i => i.item === info) || INFO[info];
            if (!fullInfo) return false;
            const isSkill = fullInfo.skill;
            const isSpec = fullInfo.spec;

            if (isSkill) {
                const regEx = /(RedPower|BluePower|GreenPower|RedLife|BlueLife|GreenLife|SpeedStat)/;
                let infoDescription = reactStringReplace(fullInfo.description, regEx, match => shapes[match]());
                infoDescription = reactStringReplace(infoDescription, '\n', () => <br />);
                const itemSource = itemInfo.combos.filter(c => c.item === removeTier(info));
                const itemSourceInfo = itemSource.length
                    ? `${itemSource[0].components[0]} ${itemSource[0].components[1]} ${itemSource[0].components[2]}`
                    : false;
                const itemRegEx = /(Red|Blue|Green)/;
                const itemSourceDescription = reactStringReplace(itemSourceInfo, itemRegEx, match => shapes[match]());
                const speed = <div> Speed {shapes.SpeedStat()} multiplier {fullInfo.speed * 4}% </div>;
                const cooldown = fullInfo.cooldown ? `${fullInfo.cooldown} Turn delay` : null;
                return (
                    <div class="info-skill">
                        <h2>{fullInfo.item} {fullInfo.cost}b</h2>
                        <h3> SKILL </h3>
                        {itemSourceDescription}
                        <div> {cooldown} </div>
                        <div>{infoDescription}</div>
                        {speed}
                    </div>
                );
            }

            if (isSpec) {
                let red = 0;
                let blue = 0;
                let green = 0;
                player.constructs.forEach(construct => {
                    red += construct.colours.red;
                    blue += construct.colours.blue;
                    green += construct.colours.green;
                });
                const teamColours = { red, blue, green };

                const colourReqs = fullInfo.values.bonuses || [];

                const thresholds = colourReqs.map((bonus, i) => {
                    const colours = ['red', 'green', 'blue'];
                    const colourGoals = {
                        red: [],
                        green: [],
                        blue: [],
                    };
                    const overFlow = [];

                    colours.forEach(c => {
                        const colourReq = bonus.req[c];
                        if (colourReqs === 0) return false;

                        const start = i === 0
                            ? 0
                            : colourReqs[i - 1].req[c];

                        const dots = range(start, colourReq).map(j => {
                            const unmet = teamColours[c] < j + 1;


                            const reqClass = unmet
                                ? 'unmet'
                                : '';

                            if (j - start > 4) {
                                overFlow.push(
                                    <figure key={j} alt={c.colour} class={reqClass} >
                                        {shapes.vboxColour(c)}
                                    </figure>
                                );
                            } else {
                                colourGoals[c].push(
                                    <figure key={j} alt={c.colour} class={reqClass} >
                                        {shapes.vboxColour(c)}
                                    </figure>
                                );
                            }

                            return true;
                        });

                        return dots;
                    });

                    const reqsMet = colours.every(c => teamColours[c] >= bonus.req[c]);

                    const reqClass = reqsMet
                        ? ''
                        : 'unmet';

                    const goals = colours.map((c, j) => {
                        if (colourGoals[c].length) {
                            return (
                                <div key={j}>{colourGoals[c]}</div>
                            );
                        }
                        return false;
                    });
                    const bonusObj = info.includes('Life')
                        ? <div class={`${reqClass} bonus`} > + {bonus.bonus}</div>
                        : <div class={`${reqClass} bonus`} > + {bonus.bonus}%</div>;
                    const overFlowObj = overFlow.length ? <div> {overFlow} </div> : null;
                    return (
                        <div key={i} class="spec-goal">
                            {goals}
                            {overFlowObj}
                            {bonusObj}
                        </div>
                    );
                });
                const regEx = /(RedPower|BluePower|GreenPower|RedLife|BlueLife|GreenLife|SpeedStat)/;
                let infoDescription = reactStringReplace(fullInfo.description, regEx, match => shapes[match]());
                infoDescription = reactStringReplace(infoDescription, '\n', () => <br />);
                const itemSource = itemInfo.combos.filter(c => c.item === info);
                let itemSourceInfo = itemSource.length
                    ? `${itemSource[0].components[0]} ${itemSource[0].components[1]} ${itemSource[0].components[2]}`
                    : false;
                const itemRegEx = /(Red|Blue|Green)/;
                if (itemSourceInfo) {
                    while (itemSourceInfo.includes('Plus')) itemSourceInfo = itemSourceInfo.replace('Plus', '+');
                }
                const itemSourceDescription = reactStringReplace(itemSourceInfo, itemRegEx, match => shapes[match]());
                let infoText = info;
                while (infoText.includes('Plus')) infoText = infoText.replace('Plus', '+');

                return (
                    <div class="info-spec">
                        <h2>{infoText} {fullInfo.cost}b</h2>
                        <h3>SPEC</h3>
                        {itemSourceDescription}
                        <div>{infoDescription}</div>
                        <div class="thresholds">
                            {thresholds}
                        </div>
                    </div>
                );
            }
            const cost = fullInfo.cost ? `- ${fullInfo.cost}b` : false;
            const infoDescription = reactStringReplace(fullInfo.description, '\n', () => <br />);
            return (
                <div class="info-item">
                    <h2>{fullInfo.item} {cost}</h2>
                    <div>{infoDescription}</div>
                </div>
            );
        }

        function Combos() {
            if (tutorial && instance.time_control === 'Practice' && instance.rounds.length === 1) return false;
            const generalNotes = (
                <div>
                    <h2> General </h2>
                    <p>
                        You can preview combos by clicking the combined item when it appears in this section. <br />
                        Click the <b>READY</b> button to start the <b>GAME PHASE</b>.
                    </p>
                </div>
            );
            if (!player) return generalNotes;
            if (!info) return generalNotes;

            const vboxCombos = itemInfo.combos.filter(c => c.components.includes(info));
            if (vboxCombos.length > 6 || vboxCombos.length === 0) return generalNotes;

            return (
                <table class="combos">
                    <tbody>
                        {vboxCombos.map((c, i) =>
                            <tr key={i} >
                                <td class="highlight" onClick={() => setInfo(c.item)} >{convertItem(c.item)}</td>
                                {c.components.map((u, j) => <td key={j} >{convertItem(u)}</td>)}
                            </tr>
                        )}
                    </tbody>
                </table>
            );
        }

        return (
            <div class='info' >
                <Info />
                <Combos />
            </div>
        );
    }
}

module.exports = InfoComponent;