const errorPhrases = require('../assets/errorPhrases.json');

const moment = require('moment');

const collection = require('lodash/collection');

logAndMsg = (channel, msg) => {

console.log(msg);

channel.send(msg);

};

getRandomIndex = (arr) => Math.floor(Math.random() * arr.length);

errAndMsg = (channel, err) => {

console.error(err);

channel.send(`${errorPhrases[getRandomIndex(errorPhrases)]} ${err}`);

};

getUnixTimestamp = () => {

return moment().valueOf();

};

getHumanReadableDateTime = (datetime) => {

return moment(datetime).format("dddd, MMMM Do YYYY, h:mm:ssA");

};

formatArrayAsList = arr => {

// https://stackoverflow.com/a/29234240/5750790

let outStr = "";

arr = arr.map(el => '`' + el + '`');

if (arr.length === 1) {

outStr = arr[0];

} else if (arr.length === 2) {

outStr = arr.join(' and ');

} else if (arr.length > 2) {

outStr = arr.slice(0, -1).join(', ') + ', and ' + arr.slice(-1);

}

return outStr;

};

updateReactionsList = (snapshot, channel) => {

const mediaData = snapshot.val();

const sortedMediaNames = collection.groupBy(Object.keys(mediaData).filter(key => key !== 'TEMPLATE'), name => name[0].toLowerCase());

const embeds = Object.keys(sortedMediaNames).sort().map(key => ({

title: key.match(/[a-z]/i) ? `:regional_indicator_${key}:` : key,

description: sortedMediaNames[key].reduce((acc, val) => acc + `, [${val}](${mediaData[val].media})`, '').substring(2),

}));

channel.fetchMessages().then(messages => {

const embedNotUpdated = embed => {

const msg = messages.find(msg => msg.embeds.length > 0 && msg.embeds[0].title === embed.title);

if (msg === null || msg.embeds[0].description !== embed.description) return true;

else return false;

};

if (embeds.some(embedNotUpdated)) {

Promise.all(messages.map(msg => msg.delete())).then(() => {

// send embeds in order

embeds.reduce((chain, embed) => chain.then(() => channel.send({ embed })), Promise.resolve());

});

}

});

};

module.exports = {

logAndMsg,

getRandomIndex,

errAndMsg,

getUnixTimestamp,

getHumanReadableDateTime,

formatArrayAsList,

updateReactionsList,

};