MagicMirror/modules/default/newsfeed/newsfeed.js
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2020-05-11 22:22:32 +02:00

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JavaScript

/* Magic Mirror
* Module: NewsFeed
*
* By Michael Teeuw https://michaelteeuw.nl
* MIT Licensed.
*/
Module.register("newsfeed", {
// Default module config.
defaults: {
feeds: [
{
title: "New York Times",
url: "https://rss.nytimes.com/services/xml/rss/nyt/HomePage.xml",
encoding: "UTF-8" //ISO-8859-1
}
],
showSourceTitle: true,
showPublishDate: true,
broadcastNewsFeeds: true,
broadcastNewsUpdates: true,
showDescription: false,
wrapTitle: true,
wrapDescription: true,
truncDescription: true,
lengthDescription: 400,
hideLoading: false,
reloadInterval: 5 * 60 * 1000, // every 5 minutes
updateInterval: 10 * 1000,
animationSpeed: 2.5 * 1000,
maxNewsItems: 0, // 0 for unlimited
ignoreOldItems: false,
ignoreOlderThan: 24 * 60 * 60 * 1000, // 1 day
removeStartTags: "",
removeEndTags: "",
startTags: [],
endTags: [],
prohibitedWords: [],
scrollLength: 500,
logFeedWarnings: false
},
// Define required scripts.
getScripts: function () {
return ["moment.js"];
},
// Define required translations.
getTranslations: function () {
// The translations for the default modules are defined in the core translation files.
// Therefor we can just return false. Otherwise we should have returned a dictionary.
// If you're trying to build your own module including translations, check out the documentation.
return false;
},
// Define start sequence.
start: function () {
Log.info("Starting module: " + this.name);
// Set locale.
moment.locale(config.language);
this.newsItems = [];
this.loaded = false;
this.activeItem = 0;
this.scrollPosition = 0;
this.registerFeeds();
this.isShowingDescription = this.config.showDescription;
},
// Override socket notification handler.
socketNotificationReceived: function (notification, payload) {
if (notification === "NEWS_ITEMS") {
this.generateFeed(payload);
if (!this.loaded) {
this.scheduleUpdateInterval();
}
this.loaded = true;
}
},
// Override dom generator.
getDom: function () {
var wrapper = document.createElement("div");
if (this.config.feedUrl) {
wrapper.className = "small bright";
wrapper.innerHTML = this.translate("configuration_changed");
return wrapper;
}
if (this.activeItem >= this.newsItems.length) {
this.activeItem = 0;
}
if (this.newsItems.length > 0) {
// this.config.showFullArticle is a run-time configuration, triggered by optional notifications
if (!this.config.showFullArticle && (this.config.showSourceTitle || this.config.showPublishDate)) {
var sourceAndTimestamp = document.createElement("div");
sourceAndTimestamp.className = "newsfeed-source light small dimmed";
if (this.config.showSourceTitle && this.newsItems[this.activeItem].sourceTitle !== "") {
sourceAndTimestamp.innerHTML = this.newsItems[this.activeItem].sourceTitle;
}
if (this.config.showSourceTitle && this.newsItems[this.activeItem].sourceTitle !== "" && this.config.showPublishDate) {
sourceAndTimestamp.innerHTML += ", ";
}
if (this.config.showPublishDate) {
sourceAndTimestamp.innerHTML += moment(new Date(this.newsItems[this.activeItem].pubdate)).fromNow();
}
if ((this.config.showSourceTitle && this.newsItems[this.activeItem].sourceTitle !== "") || this.config.showPublishDate) {
sourceAndTimestamp.innerHTML += ":";
}
wrapper.appendChild(sourceAndTimestamp);
}
//Remove selected tags from the beginning of rss feed items (title or description)
if (this.config.removeStartTags === "title" || this.config.removeStartTags === "both") {
for (let f = 0; f < this.config.startTags.length; f++) {
if (this.newsItems[this.activeItem].title.slice(0, this.config.startTags[f].length) === this.config.startTags[f]) {
this.newsItems[this.activeItem].title = this.newsItems[this.activeItem].title.slice(this.config.startTags[f].length, this.newsItems[this.activeItem].title.length);
}
}
}
if (this.config.removeStartTags === "description" || this.config.removeStartTags === "both") {
if (this.isShowingDescription) {
for (let f = 0; f < this.config.startTags.length; f++) {
if (this.newsItems[this.activeItem].description.slice(0, this.config.startTags[f].length) === this.config.startTags[f]) {
this.newsItems[this.activeItem].description = this.newsItems[this.activeItem].description.slice(this.config.startTags[f].length, this.newsItems[this.activeItem].description.length);
}
}
}
}
//Remove selected tags from the end of rss feed items (title or description)
if (this.config.removeEndTags) {
for (let f = 0; f < this.config.endTags.length; f++) {
if (this.newsItems[this.activeItem].title.slice(-this.config.endTags[f].length) === this.config.endTags[f]) {
this.newsItems[this.activeItem].title = this.newsItems[this.activeItem].title.slice(0, -this.config.endTags[f].length);
}
}
if (this.isShowingDescription) {
for (let f = 0; f < this.config.endTags.length; f++) {
if (this.newsItems[this.activeItem].description.slice(-this.config.endTags[f].length) === this.config.endTags[f]) {
this.newsItems[this.activeItem].description = this.newsItems[this.activeItem].description.slice(0, -this.config.endTags[f].length);
}
}
}
}
if (!this.config.showFullArticle) {
var title = document.createElement("div");
title.className = "newsfeed-title bright medium light" + (!this.config.wrapTitle ? " no-wrap" : "");
title.innerHTML = this.newsItems[this.activeItem].title;
wrapper.appendChild(title);
}
if (this.isShowingDescription) {
var description = document.createElement("div");
description.className = "newsfeed-desc small light" + (!this.config.wrapDescription ? " no-wrap" : "");
var txtDesc = this.newsItems[this.activeItem].description;
description.innerHTML = this.config.truncDescription ? (txtDesc.length > this.config.lengthDescription ? txtDesc.substring(0, this.config.lengthDescription) + "..." : txtDesc) : txtDesc;
wrapper.appendChild(description);
}
if (this.config.showFullArticle) {
var fullArticle = document.createElement("iframe");
fullArticle.className = "";
fullArticle.style.width = "100vw";
// very large height value to allow scrolling
fullArticle.height = "3000";
fullArticle.style.height = "3000";
fullArticle.style.top = "0";
fullArticle.style.left = "0";
fullArticle.style.border = "none";
fullArticle.src = this.getActiveItemURL();
fullArticle.style.zIndex = 1;
wrapper.appendChild(fullArticle);
}
if (this.config.hideLoading) {
this.show();
}
} else {
if (this.config.hideLoading) {
this.hide();
} else {
wrapper.innerHTML = this.translate("LOADING");
wrapper.className = "small dimmed";
}
}
return wrapper;
},
getActiveItemURL: function () {
return typeof this.newsItems[this.activeItem].url === "string" ? this.newsItems[this.activeItem].url : this.newsItems[this.activeItem].url.href;
},
/* registerFeeds()
* registers the feeds to be used by the backend.
*/
registerFeeds: function () {
for (var f in this.config.feeds) {
var feed = this.config.feeds[f];
this.sendSocketNotification("ADD_FEED", {
feed: feed,
config: this.config
});
}
},
/* generateFeed()
* Generate an ordered list of items for this configured module.
*
* attribute feeds object - An object with feeds returned by the node helper.
*/
generateFeed: function (feeds) {
var newsItems = [];
for (var feed in feeds) {
var feedItems = feeds[feed];
if (this.subscribedToFeed(feed)) {
for (var i in feedItems) {
var item = feedItems[i];
item.sourceTitle = this.titleForFeed(feed);
if (!(this.config.ignoreOldItems && Date.now() - new Date(item.pubdate) > this.config.ignoreOlderThan)) {
newsItems.push(item);
}
}
}
}
newsItems.sort(function (a, b) {
var dateA = new Date(a.pubdate);
var dateB = new Date(b.pubdate);
return dateB - dateA;
});
if (this.config.maxNewsItems > 0) {
newsItems = newsItems.slice(0, this.config.maxNewsItems);
}
if (this.config.prohibitedWords.length > 0) {
newsItems = newsItems.filter(function (value) {
for (var i = 0; i < this.config.prohibitedWords.length; i++) {
if (value["title"].toLowerCase().indexOf(this.config.prohibitedWords[i].toLowerCase()) > -1) {
return false;
}
}
return true;
}, this);
}
// get updated news items and broadcast them
var updatedItems = [];
newsItems.forEach((value) => {
if (this.newsItems.findIndex((value1) => value1 === value) === -1) {
// Add item to updated items list
updatedItems.push(value);
}
});
// check if updated items exist, if so and if we should broadcast these updates, then lets do so
if (this.config.broadcastNewsUpdates && updatedItems.length > 0) {
this.sendNotification("NEWS_FEED_UPDATE", { items: updatedItems });
}
this.newsItems = newsItems;
},
/* subscribedToFeed(feedUrl)
* Check if this module is configured to show this feed.
*
* attribute feedUrl string - Url of the feed to check.
*
* returns bool
*/
subscribedToFeed: function (feedUrl) {
for (var f in this.config.feeds) {
var feed = this.config.feeds[f];
if (feed.url === feedUrl) {
return true;
}
}
return false;
},
/* titleForFeed(feedUrl)
* Returns title for a specific feed Url.
*
* attribute feedUrl string - Url of the feed to check.
*
* returns string
*/
titleForFeed: function (feedUrl) {
for (var f in this.config.feeds) {
var feed = this.config.feeds[f];
if (feed.url === feedUrl) {
return feed.title || "";
}
}
return "";
},
/* scheduleUpdateInterval()
* Schedule visual update.
*/
scheduleUpdateInterval: function () {
var self = this;
self.updateDom(self.config.animationSpeed);
// Broadcast NewsFeed if needed
if (self.config.broadcastNewsFeeds) {
self.sendNotification("NEWS_FEED", { items: self.newsItems });
}
this.timer = setInterval(function () {
self.activeItem++;
self.updateDom(self.config.animationSpeed);
// Broadcast NewsFeed if needed
if (self.config.broadcastNewsFeeds) {
self.sendNotification("NEWS_FEED", { items: self.newsItems });
}
}, this.config.updateInterval);
},
/* capitalizeFirstLetter(string)
* Capitalizes the first character of a string.
*
* argument string string - Input string.
*
* return string - Capitalized output string.
*/
capitalizeFirstLetter: function (string) {
return string.charAt(0).toUpperCase() + string.slice(1);
},
resetDescrOrFullArticleAndTimer: function () {
this.isShowingDescription = this.config.showDescription;
this.config.showFullArticle = false;
this.scrollPosition = 0;
// reset bottom bar alignment
document.getElementsByClassName("region bottom bar")[0].style.bottom = "0";
document.getElementsByClassName("region bottom bar")[0].style.top = "inherit";
if (!this.timer) {
this.scheduleUpdateInterval();
}
},
notificationReceived: function (notification, payload, sender) {
var before = this.activeItem;
if (notification === "ARTICLE_NEXT") {
this.activeItem++;
if (this.activeItem >= this.newsItems.length) {
this.activeItem = 0;
}
this.resetDescrOrFullArticleAndTimer();
Log.info(this.name + " - going from article #" + before + " to #" + this.activeItem + " (of " + this.newsItems.length + ")");
this.updateDom(100);
} else if (notification === "ARTICLE_PREVIOUS") {
this.activeItem--;
if (this.activeItem < 0) {
this.activeItem = this.newsItems.length - 1;
}
this.resetDescrOrFullArticleAndTimer();
Log.info(this.name + " - going from article #" + before + " to #" + this.activeItem + " (of " + this.newsItems.length + ")");
this.updateDom(100);
}
// if "more details" is received the first time: show article summary, on second time show full article
else if (notification === "ARTICLE_MORE_DETAILS") {
// full article is already showing, so scrolling down
if (this.config.showFullArticle === true) {
this.scrollPosition += this.config.scrollLength;
window.scrollTo(0, this.scrollPosition);
Log.info(this.name + " - scrolling down");
Log.info(this.name + " - ARTICLE_MORE_DETAILS, scroll position: " + this.config.scrollLength);
} else {
this.showFullArticle();
}
} else if (notification === "ARTICLE_SCROLL_UP") {
if (this.config.showFullArticle === true) {
this.scrollPosition -= this.config.scrollLength;
window.scrollTo(0, this.scrollPosition);
Log.info(this.name + " - scrolling up");
Log.info(this.name + " - ARTICLE_SCROLL_UP, scroll position: " + this.config.scrollLength);
}
} else if (notification === "ARTICLE_LESS_DETAILS") {
this.resetDescrOrFullArticleAndTimer();
Log.info(this.name + " - showing only article titles again");
this.updateDom(100);
} else if (notification === "ARTICLE_TOGGLE_FULL") {
if (this.config.showFullArticle) {
this.activeItem++;
this.resetDescrOrFullArticleAndTimer();
} else {
this.showFullArticle();
}
} else if (notification === "ARTICLE_INFO_REQUEST") {
this.sendNotification("ARTICLE_INFO_RESPONSE", {
title: this.newsItems[this.activeItem].title,
source: this.newsItems[this.activeItem].sourceTitle,
date: this.newsItems[this.activeItem].pubdate,
desc: this.newsItems[this.activeItem].description,
url: this.getActiveItemURL()
});
}
},
showFullArticle: function () {
this.isShowingDescription = !this.isShowingDescription;
this.config.showFullArticle = !this.isShowingDescription;
// make bottom bar align to top to allow scrolling
if (this.config.showFullArticle === true) {
document.getElementsByClassName("region bottom bar")[0].style.bottom = "inherit";
document.getElementsByClassName("region bottom bar")[0].style.top = "-90px";
}
clearInterval(this.timer);
this.timer = null;
Log.info(this.name + " - showing " + this.isShowingDescription ? "article description" : "full article");
this.updateDom(100);
}
});