const { removeTier } = require('./utils');
const { TIMES } = require('./constants');

function none() {
    return {
        animSource: null,
        animTarget: null,
    };
}

function getObjects(resolution, stages, game, account) {
    if (!resolution) return none();
    if (!resolution.target) return none();

    const [type, event] = resolution.event;
    if (!event || !event.skill) return none();

    const playerTeam = game.players.find(t => t.id === account.id);
    const playerTeamIds = playerTeam.constructs.map(c => c.id);
    const otherTeam = game.players.find(t => t.id !== account.id);
    const otherTeamIds = otherTeam.constructs.map(c => c.id);
    const sourceIsPlayer = playerTeamIds.includes(resolution.source.id);
    const targetIsPlayer = playerTeamIds.includes(resolution.target.id);

    const targetting = () => {
        if (type === 'AoeSkill') {
            if (targetIsPlayer) return playerTeamIds;
            return otherTeamIds;
        }
        return [resolution.target.id];
    };

    const sameTeam = (sourceIsPlayer && targetIsPlayer) || (!sourceIsPlayer && !targetIsPlayer);
    let y = 0;
    if (!sameTeam) y = targetIsPlayer ? 1 : -1;

    const i = sourceIsPlayer
        ? playerTeamIds.findIndex(c => c === resolution.source.id)
        : otherTeamIds.findIndex(c => c === resolution.source.id);
 
    const j = targetIsPlayer
        ? playerTeamIds.findIndex(c => c === resolution.target.id)
        : otherTeamIds.findIndex(c => c === resolution.target.id);
    const x = j - i;
    const direction = { x, y };
    // const targetTeam = targetIsPlayer ? playerTeamIds : otherTeamIds;

    const createSourceAnim = () => {
        return {
            animation: 'sourceCast',
            constructId: resolution.source.id,
            direction,
        };
    };

    const skipSource = !stages.includes('START_SKILL')
        || resolution.source.id === resolution.target.id;

    const animSource = skipSource
        ? null
        : createSourceAnim();

    const skill = removeTier(event.skill);

    const animTarget = {
        skill,
        constructId: targetting(),
        player: playerTeamIds.includes(resolution.target.id),
        direction,
    };
    return {
        animSource,
        animTarget,
    };
}

function getSequence(resolution) {
    if (!resolution.event) return [];
    if (resolution.event[0] === 'Inversion') return [];
    if (['Skill', 'AoeSkill'].includes(resolution.event[0])) return ['START_SKILL', 'END_SKILL'];
    if (resolution.event[0] === 'Ko') return ['POST_SKILL'];

    switch (resolution.stages) {
    case 'AllStages': return ['START_SKILL', 'END_SKILL', 'POST_SKILL'];
    case 'StartEnd': return ['START_SKILL', 'END_SKILL'];
    case 'StartPost': return ['START_SKILL', 'POST_SKILL'];
    case 'StartOnly': return ['START_SKILL'];
    case 'EndPost': return ['END_SKILL', 'POST_SKILL'];
    case 'EndOnly': return ['END_SKILL'];
    case 'PostOnly': return ['POST_SKILL'];
    case 'None': return [];
    default: return ['START_SKILL', 'END_SKILL', 'POST_SKILL'];
    }
}

function getTime(stages) {
    let time = 0;
    if (stages.includes('START_SKILL') && stages.includes('END_SKILL')) {
        time += TIMES.SOURCE_AND_TARGET_TOTAL_DURATION;
    } else {
        if (stages.includes('START_SKILL')) time += TIMES.SOURCE_DURATION_MS;
        if (stages.includes('END_SKILL')) time += TIMES.TARGET_DURATION_MS;
    }
    if (stages.includes('POST_SKILL')) time += TIMES.POST_SKILL_DURATION_MS;

    return time;
}

function getFocusTargets(resolution, game) {
    if (!resolution) return [];
    if (!resolution.event) return [];
    const [type] = resolution.event;
    const source = resolution.source.id;
    const target = resolution.target.id;

    if (type === 'AoeSkill') {
        const targetTeam = game.players.find(t => t.constructs.find(c => c.id === target));
        const targetTeamIds = targetTeam.constructs.map(c => c.id);
        if (source !== target) targetTeamIds.push(source);
        return targetTeamIds;
    }
    if (source !== target) return [source, target];
    return [target];
}

function getText(resolution, sequence) {
    const nullText = { text: null, constructId: null, life: null };
    if (!resolution) return nullText;
    if (!sequence.includes('POST_SKILL')) return nullText;

    function generatePostSkill() {
        const [type, event] = resolution.event;
        if (type === 'Ko') {
            return { text: 'KO!', css: 'ko' };
        }

        if (type === 'Disable') {
            const { disable } = event;
            return { text: `${disable}`, css: '' };
        }

        if (type === 'Immunity') {
            return { text: 'IMMUNE', css: '' };
        }

        if (type === 'Damage') {
            const { mitigation, colour } = event;
            let { amount } = event;
            let css = '';
            if (colour === 'Green') {
                css = 'green-damage';
                amount *= -1;
            }
            if (colour === 'Red') css = 'red-damage';
            if (colour === 'Blue') css = 'blue-damage';

            const mitigationText = mitigation
                ? `(${mitigation})`
                : '';
            return { text: `${amount} ${mitigationText}`, css };
        }

        if (type === 'Healing') {
            const { amount, overhealing } = event;
            return { text: `${amount} (${overhealing} OH)`, css: 'green-damage' };
        }

        if (type === 'Inversion') {
            return { text: 'INVERT', css: '' };
        }

        if (type === 'Reflection') {
            return { text: 'REFLECT', css: '' };
        }

        if (type === 'Effect') {
            const { effect, duration, construct_effects: effects } = event;
            return { text: `+ ${effect} ${duration}T`, css: '', effects };
        }

        if (type === 'Recharge') {
            const { red, blue } = event;
            return { text: [`+${red}R ${blue}B`, ''], css: '' };
        }

        if (type === 'Removal') {
            const { effect, construct_effects: effects } = event;
            return { text: `-${effect}`, css: '', effects };
        }
        return false;
    }

    const { green, red, blue } = resolution.target;
    const { text, css, effects } = generatePostSkill();
    return {
        css,
        text,
        effects,
        life: { green, red, blue },
        constructId: resolution.target.id,
    };
}

module.exports = {
    getFocusTargets,
    getObjects,
    getTime,
    getSequence,
    getText,
};


        // if (!(resolution.target.id === construct.id)
        //     && !(resolution.event[0] === 'AoeSkill' && targetTeam.includes(construct.id))) return false;