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/**
* A self-contained library for managing pamphlets
* Original source: https://shi.foo/static/js/libs/pamphlet.js
* Credit must be given if this code is used in any way
* @version 1.0.0
* @module Pamphlet
*/
(function (window) {
'use strict';
/**
* Manages pamphlets
*/
class Pamphlet {
/**
* Creates a new Pamphlet instance
* @param {Object} config - Configuration options
* @param {string} [config.server='https://shi.foo/services/pamphlet'] - Server endpoint for pamphlet content
* @param {number} [config.refreshInterval=3600000] - Refresh interval in milliseconds (0 to disable)
*/
constructor(config = {}) {
let refreshInterval = config.refreshInterval || 3600000;
// Ensure refresh interval is either 0 (disabled) or valid
if (refreshInterval > 0 && refreshInterval < 60000) {
console.warn('Pamphlet: Refresh interval must be at least 1 minute (60000ms). Setting to 60000ms.');
refreshInterval = 60000;
} else if (refreshInterval < 0) {
console.warn('Pamphlet: Refresh interval cannot be negative. Setting to 3600000ms.');
refreshInterval = 3600000;
} else if (isNaN(refreshInterval)) {
console.warn('Pamphlet: Refresh interval must be a number. Setting to 3600000ms.');
refreshInterval = 3600000;
}
// First spread the config object, then override with validated values
this.config = {
...config,
server: config.server || 'https://shi.foo/services/pamphlet',
refreshInterval: refreshInterval
};
/** @type {Map<string, {element: HTMLElement, style: string}>} */
this.slots = new Map();
if (document.readyState === 'loading') {
document.addEventListener('DOMContentLoaded', () => this.init());
} else {
this.init();
}
}
/**
* Initializes the Pamphlet instance by scanning for slots and setting up refresh interval
* @private
*/
init() {
this.scanForSlots();
if (this.config.refreshInterval > 0) {
setInterval(() => this.refreshAll(), this.config.refreshInterval);
}
}
/**
* Scans the document for pamphlet elements and sets them up
* @private
*/
scanForSlots() {
const elements = document.querySelectorAll('.pamphlet');
elements.forEach(element => {
const style = this.getStyle(element);
if (style) {
this.setupSlot(element, style);
}
});
}
/**
* Determines the style of a pamphlet element based on its classes
* @private
* @param {HTMLElement} element - Element to check
* @returns {string|null} Style name or null if no valid style found
*/
getStyle(element) {
const classes = element.classList;
if (classes.contains('pamphlet-banner')) return 'banner';
if (classes.contains('pamphlet-big')) return 'big';
if (classes.contains('pamphlet-button')) return 'button';
return null;
}
/**
* Sets up a new pamphlet slot
* @private
* @param {HTMLElement} element - Element to set up as a slot
* @param {string} style - Style of the pamphlet
*/
setupSlot(element, style) {
const slotId = `slot-${Math.random().toString(36).substring(2, 9)}`;
element.setAttribute('data-pamphlet-id', slotId);
this.slots.set(slotId, {
element,
style
});
this.loadPamphlet(slotId);
}
/**
* Loads pamphlet content for a specific slot
* @private
* @param {string} slotId - ID of the slot to load content for
*/
loadPamphlet(slotId) {
const slot = this.slots.get(slotId);
if (!slot) return;
try {
const img = document.createElement('img');
const seed = Math.random().toString(36).substring(7);
img.src = `${this.config.server}?style=${slot.style}&seed=${seed}`;
img.alt = 'Pamphlet';
img.style.width = '100%';
img.style.height = '100%';
slot.element.innerHTML = '';
slot.element.appendChild(img);
} catch (error) {
slot.element.innerHTML = '<!-- Failed to load pamphlet -->';
}
}
/**
* Refreshes all pamphlet slots
* @public
*/
refreshAll() {
this.slots.forEach((slot, slotId) => {
this.loadPamphlet(slotId);
});
}
/**
* Refreshes a specific pamphlet element
* @public
* @param {HTMLElement} element - Element to refresh
*/
refresh(element) {
const slotId = element.getAttribute('data-pamphlet-id');
if (slotId) {
this.loadPamphlet(slotId);
}
}
}
window.Pamphlet = Pamphlet;
})(window);
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