mastodon-embed-timeline/src/mastodon-timeline.js
2023-03-01 13:57:02 +00:00

359 lines
11 KiB
JavaScript

// Mastodon embed feed timeline v3.3.0
// More info at:
// https://gitlab.com/idotj/mastodon-embed-feed-timeline
// Timeline settings
document.addEventListener("DOMContentLoaded", () => {
let mapi = new MastodonApi({
// Id of the <div> containing the timeline
container_body_id: 'mt-body',
// Preferred color theme: 'light', 'dark' or 'auto' (default: auto)
default_theme: 'auto',
// Your Mastodon instance
instance_uri: 'https://mastodon.online',
// Your user ID on Mastodon instance. Leave empty if you prefer to show local instance toots
user_id: '000180745',
// Your user name on Mastodon instance
profile_name: '@idotj',
// Maximum amount of toots to get (default: 20)
toots_limit: '20',
// Hide boosted toots (default: don't hide)
hide_reblog: false,
// Hide replies toots (default: don't hide)
hide_replies: false,
// Limit the text content to a maximum number of lines (default: unlimited)
text_max_lines: '0',
// Customize the text of the link pointing to the Mastodon page (appears after the last toot)
link_see_more: 'See more posts at Mastodon'
});
});
let MastodonApi = function (params_) {
// Endpoint access settings / default values
this.DEFAULT_THEME = params_.default_theme || 'auto';
this.INSTANCE_URI = params_.instance_uri;
this.USER_ID = params_.user_id || '';
this.PROFILE_NAME = this.USER_ID ? params_.profile_name : '';
this.TOOTS_LIMIT = params_.toots_limit || '20';
this.HIDE_REBLOG = typeof params_.hide_reblog !== 'undefined' ? params_.hide_reblog : false;
this.HIDE_REPLIES = typeof params_.hide_replies !== 'undefined' ? params_.hide_replies : false;
this.TEXT_MAX_LINES = params_.text_max_lines || '0';
this.LINK_SEE_MORE = params_.link_see_more;
// Target selector
this.mtBodyContainer = document.getElementById(params_.container_body_id);
// Apply selected appearance
this.applyTheme();
// Get the toots
this.getToots();
}
// Theme style
MastodonApi.prototype.applyTheme = function () {
const setTheme = function (theme) {
document.documentElement.setAttribute('data-theme', theme);
}
if (this.DEFAULT_THEME === 'auto') {
let systemTheme = window.matchMedia('(prefers-color-scheme: dark)');
systemTheme.matches ? setTheme('dark') : setTheme('light');
systemTheme.addEventListener('change', event => {
event.matches ? setTheme('dark') : setTheme('light');
});
} else {
setTheme(this.DEFAULT_THEME);
}
}
// Listing toots function
MastodonApi.prototype.getToots = function () {
let mapi = this;
let requestURL = '';
// Get request (user toots or local timeline toots)
if (this.USER_ID) {
requestURL = this.INSTANCE_URI + '/api/v1/accounts/' + this.USER_ID + '/statuses?limit=' + this.TOOTS_LIMIT;
} else {
requestURL = this.INSTANCE_URI + '/api/v1/timelines/public?limit=' + this.TOOTS_LIMIT;
}
fetch(requestURL, { method: 'get' })
.then(
response => {
if (response.ok) {
return response.json()
} else if (response.status === 404) {
throw new Error("404 Not found", { cause: response });
} else {
throw new Error(response.status);
}
}
)
.then(jsonData => {
// console.log('jsonData: ', jsonData);
// Empty the <div> container
this.mtBodyContainer.innerHTML = '';
// Add toots
for (let i in jsonData) {
// List only public toots
if (jsonData[i].visibility == 'public' || jsonData[i].visibility == 'unlisted') {
if (mapi.HIDE_REBLOG && jsonData[i].reblog || mapi.HIDE_REPLIES && jsonData[i].in_reply_to_id) {
// Nothing here (Don't append boosts and/or replies toots)
} else {
appendToot.call(mapi, jsonData[i], i);
}
}
}
// Add target="_blank" to all #hashtags and @mentions
let linksToBlank = document.querySelectorAll('#mt-body .hashtag, .u-url.mention');
for (let j = 0; j < linksToBlank.length; j++) {
linksToBlank[j].target = '_blank';
linksToBlank[j].hasAttribute('rel', 'tag') ? linksToBlank[j].setAttribute('rel', 'tag nofollow noopener noreferrer') : linksToBlank[j].setAttribute('rel', 'nofollow noopener noreferrer');
}
// Insert link after last toot to visit Mastodon page
if (mapi.LINK_SEE_MORE) {
let linkHtml = '';
if (this.USER_ID) {
linkHtml = '<div class="mt-footer"><a href="' + mapi.INSTANCE_URI + '/' + mapi.PROFILE_NAME + '" class="btn" target="_blank" rel="nofollow noopener noreferrer">' + mapi.LINK_SEE_MORE + '</a></div>';
} else {
linkHtml = '<div class="mt-footer"><a href="' + mapi.INSTANCE_URI + '/public/local' + '" class="btn" target="_blank" rel="nofollow noopener noreferrer">' + mapi.LINK_SEE_MORE + '</a></div>';
}
this.mtBodyContainer.parentNode.insertAdjacentHTML('beforeend', linkHtml);
}
})
.catch(err => {
this.mtBodyContainer.innerHTML = '<div class="mt-error">✖️<br/><strong>Request Failed:</strong><br/>' + err + '</div>';
this.mtBodyContainer.setAttribute('role', 'none');
});
// Inner function to add each toot content in container
let appendToot = function (status_, index) {
let avatar, user, content, url, date;
if (status_.reblog) {
// BOOSTED toot
// Toot url
url = status_.reblog.url;
// Boosted avatar
avatar =
'<a href="' + status_.reblog.account.url + '" class="mt-avatar mt-avatar-boosted" style="background-image:url(' + status_.reblog.account.avatar + ');" rel="nofollow noopener noreferrer" target="_blank">'
+ '<div class="mt-avatar mt-avatar-booster" style="background-image:url(' + status_.account.avatar + ');">'
+ '</div>'
+ '<span class="visually-hidden">'
+ status_.account.username + ' avatar'
+ '</span>'
+ '</a>';
// User name and url
user =
'<div class="mt-user">'
+ '<a href="' + status_.reblog.account.url + '" rel="nofollow noopener noreferrer" target="_blank">'
+ status_.reblog.account.username + '<span class="visually-hidden"> post</span>'
+ '</a>'
+ '</div>';
// Date
date = this.formatDate(status_.reblog.created_at);
} else {
// STANDARD toot
// Toot url
url = status_.url;
// Avatar
avatar =
'<a href="' + status_.account.url + '" class="mt-avatar" style="background-image:url(' + status_.account.avatar + ');" rel="nofollow noopener noreferrer" target="_blank">'
+ '<span class="visually-hidden">'
+ status_.account.username + ' avatar'
+ '</span>'
+ '</a>';
// User name and url
user =
'<div class="mt-user">'
+ '<a href="' + status_.account.url + '" rel="nofollow noopener noreferrer" target="_blank">'
+ status_.account.username + '<span class="visually-hidden"> post</span>'
+ '</a>'
+ '</div>';
// Date
date = this.formatDate(status_.created_at);
}
// Main text
let text_css = '';
if (this.TEXT_MAX_LINES !== '0') {
text_css = 'truncate';
document.documentElement.style.setProperty('--text-max-lines', this.TEXT_MAX_LINES);
}
if (status_.spoiler_text !== '') {
content =
'<div class="toot-text">'
+ status_.spoiler_text
+ ' <button type="button" class="spoiler-link" aria-expanded="false">Show more</button>'
+ '<div class="spoiler-text">'
+ status_.content
+ '</div>'
+ '</div>';
} else if (status_.reblog && status_.reblog.content !== '') {
content =
'<div class="toot-text' + ' ' + text_css + '">'
+ '<div>'
+ status_.reblog.content
+ '</div>'
+ '</div>';
} else {
content =
'<div class="toot-text' + ' ' + text_css + '">'
+ '<div>'
+ status_.content
+ '</div>'
+ '</div>';
}
// Media attachments
let media = '';
if (status_.media_attachments.length > 0) {
for (let picid in status_.media_attachments) {
media = this.replaceMedias(status_.media_attachments[picid], status_.sensitive);
}
}
if (status_.reblog && status_.reblog.media_attachments.length > 0) {
for (let picid in status_.reblog.media_attachments) {
media = this.replaceMedias(status_.reblog.media_attachments[picid], status_.sensitive);
}
}
// Poll
let poll = '';
let pollOption = '';
if (status_.poll) {
for (let i in status_.poll.options) {
pollOption +=
'<li>'
+ status_.poll.options[i].title
+ '</li>';
}
poll =
'<div class="toot-poll">'
+ '<ul>'
+ pollOption
+ '</ul>'
+ '</div>';
}
// Date
let timestamp =
'<div class="toot-date">'
+ '<a href="' + url + '" rel="nofollow noopener noreferrer" tabindex="-1" target="_blank">'
+ date
+ '</a>'
+ '</div>';
// Add all to main toot container
let toot =
'<article class="mt-toot border-bottom" aria-posinset="' + (Number(index) + 1) + '" aria-setsize="' + this.TOOTS_LIMIT + '" data-location="' + url + '" tabindex="0">'
+ avatar
+ user
+ content
+ media
+ poll
+ timestamp
+ '</article>';
this.mtBodyContainer.insertAdjacentHTML('beforeend', toot);
};
// Toot interactions
this.mtBodyContainer.addEventListener('click', function (event) {
// Check if clicked in a toot
if (event.target.localName == 'article' || event.target.offsetParent.localName == 'article' || event.target.localName == 'img') {
openTootURL(event);
}
// Check if clicked in Show More/Less button
if (event.target.localName == 'button' && event.target.className == 'spoiler-link') {
toogleSpoiler(event);
}
});
this.mtBodyContainer.addEventListener('keydown', function (event) {
// Check if Enter key pressed with focus in an article
if (event.code === 'Enter' && event.target.localName == 'article') {
openTootURL(event);
}
});
// Open Toot in a new page avoiding any other natural link
openTootURL = function (event_) {
let urlToot = event_.target.closest('.mt-toot').dataset.location;
if (event_.target.localName !== 'a' && event_.target.localName !== 'span' && event_.target.localName !== 'button' && urlToot) {
window.open(urlToot, '_blank');
}
}
// Spoiler button
toogleSpoiler = function (event_) {
let spoilerText = event_.target.nextSibling;
let spoilerBtnText = event_.target.textContent;
spoilerText.classList.toggle('spoiler-text');
if (spoilerBtnText == 'Show more') {
spoilerBtnText = 'Show less';
event_.target.setAttribute('aria-expanded', 'true');
} else {
spoilerBtnText = 'Show more';
event_.target.setAttribute('aria-expanded', 'false');
}
}
};
// Place media
MastodonApi.prototype.replaceMedias = function (media_, spoiler_) {
let spoiler = spoiler_ || false;
let pic =
'<div class="toot-media ' + (spoiler ? 'toot-media-spoiler' : '') + ' img-ratio14_7 loading-spinner">'
+ '<img onload="removeSpinner(this)" onerror="removeSpinner(this)" src="' + media_.preview_url + '" alt="" loading="lazy" />'
+ '</div>';
return pic;
};
// Format date
MastodonApi.prototype.formatDate = function (date_) {
const monthNames = ["Jan", "Feb", "Mar", "Apr", "May", "Jun",
"Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
];
let date = new Date(date_);
let displayDate = monthNames[date.getMonth()]
+ " " + date.getDate()
+ ", " + date.getFullYear();
return displayDate;
};
// Loading spinner
removeSpinner = function (element) {
const spinnerCSS = 'loading-spinner';
// Find closest parent container (1st, 2nd or 3rd level)
let spinnerContainer = element.closest('.' + spinnerCSS);
if (spinnerContainer) {
spinnerContainer.classList.remove(spinnerCSS);
}
}