Readarr/src/UI/Handlebars/Helpers/Html.js

var $ = require('jquery');
var Handlebars = require('handlebars');
var StatusModel = require('../../System/StatusModel');

var placeholder = StatusModel.get('urlBase') + '/Content/Images/poster-dark.png';

window.NzbDrone.imageError = function(img) {
    if (!img.src.contains(placeholder)) {
        img.src = placeholder;
        $(img).addClass('placeholder-image');
    }

    img.onerror = null;
};

Handlebars.registerHelper('defaultImg', function(src, size) {
    if (!src) {
        return new Handlebars.SafeString('onerror="window.NzbDrone.imageError(this);"');
    }

    if (size) {
        src = src.replace(/\.jpg($|\?)/g, '-' + size + '.jpg$1');
    }

    return new Handlebars.SafeString('src="{0}" onerror="window.NzbDrone.imageError(this);"'.format(src));
});

Handlebars.registerHelper('UrlBase', function() {
    return new Handlebars.SafeString(StatusModel.get('urlBase'));
});