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MMM-ImagesPhotos.js
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MMM-ImagesPhotos.js
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/* global Module */
/* Magic Mirror
* Module: MMM-ImagesPhotos
*
* By Rodrigo Ramírez Norambuena https://rodrigoramirez.com
* MIT Licensed.
*/
Module.register("MMM-ImagesPhotos",{
defaults: {
opacity: 0.9,
animationSpeed: 500,
updateInterval: 5000,
getInterval: 60000,
maxWidth: "100%",
maxHeight: "100%",
retryDelay: 2500
},
requiresVersion: "2.1.0", // Required version of MagicMirror
start: function() {
var self = this;
this.photos = [];
this.loaded = false;
this.lastPhotoIndex = -1;
// Schedule update timer.
this.getPhotos();
setInterval(function() {
self.updateDom(self.config.animationSpeed);
}, this.config.updateInterval);
},
/*
* getPhotos
* Requests new data from api url helper
*
*/
getPhotos: function() {
var urlApHelper = "/MMM-ImagesPhotos/photos";
var self = this;
var retry = true;
var photosRequest = new XMLHttpRequest();
photosRequest.open("GET", urlApHelper, true);
photosRequest.onreadystatechange = function() {
if (this.readyState === 4) {
if (this.status === 200) {
self.processPhotos(JSON.parse(this.response));
} else if (this.status === 401) {
self.updateDom(self.config.animationSpeed);
Log.error(self.name, this.status);
retry = false;
} else {
Log.error(self.name, "Could not load photos.");
}
if (retry) {
self.scheduleUpdate((self.loaded) ? -1 : self.config.retryDelay);
}
}
};
photosRequest.send();
},
/* scheduleUpdate()
* Schedule next update.
*
* argument delay number - Milliseconds before next update.
* If empty, this.config.updateInterval is used.
*/
scheduleUpdate: function(delay) {
var nextLoad = this.config.getInterval;
if (typeof delay !== "undefined" && delay >= 0) {
nextLoad = delay;
}
nextLoad = nextLoad ;
var self = this;
setTimeout(function() {
self.getPhotos();
}, nextLoad);
},
/* randomIndex(photos)
* Generate a random index for a list of photos.
*
* argument photos Array<String> - Array with photos.
*
* return Number - Random index.
*/
randomIndex: function(photos) {
if (photos.length === 1) {
return 0;
}
var generate = function() {
return Math.floor(Math.random() * photos.length);
};
var photoIndex = generate();
this.lastPhotoIndex = photoIndex;
return photoIndex;
},
/* complimentArray()
* Retrieve a random photos.
*
* return photo Object - A photo.
*/
randomPhoto: function() {
var photos = this.photos;
var index = this.randomIndex(photos);
return photos[index];
},
getDom: function() {
var self = this;
var wrapper = document.createElement("div");
var photoImage = this.randomPhoto();
if (photoImage) {
var img = document.createElement("img");
img.src = photoImage.url;
img.id = "mmm-images-photos";
img.style.maxWidth = this.config.maxWidth;
img.style.maxHeight = this.config.maxHeight;
img.style.opacity = self.config.opacity;
wrapper.appendChild(img);
}
return wrapper;
},
getScripts: function() {
return ["MMM-ImagesPhotos.css"]
},
processPhotos: function(data) {
var self = this;
this.photos = data;
if (this.loaded === false) { self.updateDom(self.config.animationSpeed) ; }
this.loaded = true;
},
});