Add v2 functionality
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app/bot.js
88
app/bot.js
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@ -1,4 +1,12 @@
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//external lib imports
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const GetUrls = require("get-urls"); //for extracting urls from messages
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//my imports
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const DiscordUtil = require("discordjs-util");
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//app component imports
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const GuildData = require("./models/guild-data.js");
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const FeedData = require("./models/feed-data.js");
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module.exports = {
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onReady(client, guildsData, config) {
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@ -19,17 +27,83 @@ module.exports = {
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}
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},
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onNonCommandMsg(message, guildData) {
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return;
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guildData.feeds.forEach(feedData => {
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if (message.channel.name === feedData.channelName)
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feedData.cachedLinks.push(...GetUrls(message.content)); //spread the urlSet returned by GetUrls into the cache array
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});
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}
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};
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function addFeed() {
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//todo
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function addFeed(client, guildsData, message, maxCacheSize) {
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return new Promise((resolve, reject) => {
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const feedUrl = [...GetUrls(message.content)][0];
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const channel = message.mentions.channels.first();
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if (!feedUrl || !channel)
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reject("Please provide both a channel and an RSS feed URL. You can optionally @mention a role also.");
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const role = message.mentions.roles.first();
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const feedData = new FeedData({
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url: feedUrl,
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channelName: channel.name,
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roleName: role ? role.name : null,
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maxCacheSize: maxCacheSize
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});
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//ask the user if they're happy with the details they set up, save if yes, don't if no
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DiscordUtil.ask(client, message.channel, message.member, "Are you happy with this?\n" + feedData.toString())
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.then(responseMessage => {
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//if they responded yes, save the feed and let them know, else tell them to start again
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if (responseMessage.content.toLowerCase() === "yes") {
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if (!guildsData[message.guild.id])
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guildsData[message.guild.id] = new GuildData({ id: message.guild.id, feeds: [] });
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guildsData[message.guild.id].feeds.push(feedData);
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resolve("Your new feed has been saved!");
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}
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else
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reject("Your feed has not been saved, please add it again with the correct details");
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});
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});
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}
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function removeFeed() {
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//todo
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function removeFeed(guildsData, message, botName) {
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return new Promise((resolve, reject) => {
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const parameters = message.content.split(" ");
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if (parameters.length !== 3)
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resolve(`Please use the command as such:\n\`\`\` ${botName} remove-feed feedid\`\`\``);
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else {
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const guildData = guildsData[message.guild.id];
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const idx = guildData.feeds.findIndex(feed => feed.id === parameters[2]);
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if (!Number.isInteger(idx))
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reject("Can't find feed with id " + parameters[2]);
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else {
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guildData.feeds.splice(idx, 1);
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reject("Feed removed!");
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}
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}
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});
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}
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function viewFeeds() {
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//todo
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function viewFeeds(guildData) {
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if (!guildData)
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return Promise.reject("Guild not setup");
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return Promise.resolve(guildData.feeds.map(f => f.toString()).join("\n"));
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}
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function checkFeedsInGuilds(guilds, guildsData) {
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Object.keys(guildsData).forEach(key => guildsData[key].checkFeeds(guilds));
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}
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function parseLinksInGuilds(guilds, guildsData) {
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const promises = [];
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for (let guildId of guilds.keys()) {
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const guildData = guildsData[guildId];
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if (guildData)
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promises.push(guildData.cachePastPostedLinks(guilds.get(guildId)));
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}
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return Promise.all(promises);
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}
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@ -4,7 +4,9 @@
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"saveIntervalSec": 60,
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"website": "https://benji7425.github.io",
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"discordInvite": "https://discord.gg/SSkbwSJ",
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"defaultDMResponse": "This bot does not have any handling for direct messages. To learn more or get help please visit %s, or join my Discord server here: %s" },
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"defaultDMResponse": "This bot does not have any handling for direct messages. To learn more or get help please visit %s, or join my Discord server here: %s"
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},
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"feedCheckIntervalSec": 30,
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"commands": {
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"version": {
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"command": "version",
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@ -0,0 +1,89 @@
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//my imports
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const DiscordUtil = require("discordjs-util");
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//external lib imports
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const Dns = require("dns"); //for host resolution checking
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const Url = require("url"); //for url parsing
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const FeedRead = require("feed-read"); //for extracing new links from RSS feeds
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const GetUrls = require("get-urls"); //for extracting urls from messages
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const ShortID = require("shortid"); //to provide ids for each feed, allowing guilds to remove them
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module.exports = class FeedData {
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constructor({ id, url, channelName, roleName, cachedLinks, maxCacheSize }) {
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this.id = id || ShortID.generate();
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this.url = url;
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this.channelName = channelName;
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this.roleName = roleName;
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this.cachedLinks = cachedLinks || [];
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this.maxCacheSize = maxCacheSize || 10;
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this.cachedLinks.push = (...elements) => {
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const unique = elements
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.map(el => normaliseUrl(el)) //normalise all the urls
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.filter(el => !this.cachedLinks.includes(el)); //filter out any already cached
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Array.prototype.push.apply(this.cachedLinks, unique);
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if (this.cachedLinks.length > this.maxCacheSize)
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this.cachedLinks.splice(0, this.cachedLinks.length - this.maxCacheSize); //remove the # of elements above the max from the beginning
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};
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}
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/**
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* Returns a promise providing all the links posted in the last 100 messages
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* @param {Discord.Guild} guild The guild this feed belongs to
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* @returns {Promise<string[]>} Links posted in last 100 messages
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*/
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updatePastPostedLinks(guild) {
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const channel = guild.channels.find(ch => ch.type === "text" && ch.name === this.channelName);
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return new Promise((resolve, reject) => {
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channel.fetchMessages({ limit: 100 })
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.then(messages => {
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new Map([...messages].reverse()).forEach(m => this.cachedLinks.push(...GetUrls(m.content))); //push all the links in each message into our links array
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resolve(this);
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})
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.catch(reject);
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});
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}
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check(guild) {
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Dns.resolve(Url.parse(this.url).host || "", err => { //check we can resolve the host, so we can throw an appropriate error if it fails
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if (err)
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DiscordUtil.dateError("Connection Error: Can't resolve host", err); //log our error if we can't resolve the host
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else
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FeedRead(this.url, (err, articles) => { //check the feed
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if (err)
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DiscordUtil.dateError(err);
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else {
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let latest = articles[0].link; //extract the latest link
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latest = normaliseUrl(latest); //standardise it a bit
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//if we don't have it cached already, cache it and callback
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if (!this.cachedLinks.includes(latest)) {
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this.cachedLinks.push(latest);
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const channel = guild.channels.find(ch => ch.type === "text" && ch.name.toLowerCase() === this.channelName.toLowerCase());
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const role = this.roleName ? guild.roles.find(role => role.name.toLowerCase() === this.roleName.toLowerCase()) : null;
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channel.send((role ? role + " " : "") + latest);
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}
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}
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});
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});
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}
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toString() {
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const blacklist = ["cachedLinks", "maxCacheSize"];
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return `\`\`\`JavaScript\n ${JSON.stringify(this, (k, v) => !blacklist.includes(k) ? v : undefined, "\t")} \`\`\``;
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}
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};
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function normaliseUrl(url) {
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url = url.replace("https://", "http://"); //cheaty way to get around http and https not matching
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if (Url.parse(url).host.includes("youtu")) //detect youtu.be and youtube.com - yes I know it's hacky
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url = url.split("&")[0]; //quick way to chop off stuff like &feature=youtube
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url = url.replace(/(www.)?youtube.com\/watch\?v=/, "youtu.be/"); //turn full url into share url
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return url;
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}
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@ -1,7 +1,23 @@
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const DiscordUtil = require("discordjs-util");
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const FeedData = require("./feed-data.js");
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const Util = require("discordjs-util");
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module.exports = class GuildData {
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constructor({ id }) {
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constructor({ id, feeds }) {
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this.id = id;
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this.feeds = feeds.map(feed => new FeedData(feed));
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}
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cachePastPostedLinks(guild) {
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const promises = [];
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this.feeds.forEach(feed => {
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promises.push(feed.updatePastPostedLinks(guild).catch(Util.dateError));
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});
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return Promise.all(promises);
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}
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checkFeeds(guilds) {
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this.feeds.forEach(feed => feed.check(guilds.get(this.id)));
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}
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};
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