Allows customisation of the lemmy community bar
// ==UserScript==
// @name Lemmy mlmym community bar customisation
// @namespace https://greasyfork.org/
// @version 0.3
// @description Allows customisation of the lemmy community bar
// @author 9point6
// @match https://old.lemmy.world/*
// @icon https://www.google.com/s2/favicons?sz=64&domain=lemmy.world
// @grant none
// @license MIT
// ==/UserScript==
(function() {
'use strict';
const INITIAL_COMMUNITIES = [
'football',
'[email protected]',
'[email protected]',
];
const LOCAL_STORAGE_KEY = 'lemmyCommunityBarSettings';
const updateSettings = (newCommunitiesList) => {
const settings = {
settingsVersion: 1,
communities: newCommunitiesList.filter((item) => typeof item === 'string')
};
window.localStorage.setItem(LOCAL_STORAGE_KEY, JSON.stringify(settings));
return settings;
}
const loadSettings = () => {
try {
const existingSettings = window.localStorage.getItem(LOCAL_STORAGE_KEY);
if (existingSettings) {
return JSON.parse(existingSettings);
}
} catch (ex) {}
return updateSettings(INITIAL_COMMUNITIES);
}
const hideEditMenu = () => {
const container = document.querySelector('#community-bar-editor');
if (container) {
container.remove();
}
}
const createConfigButton = (icon, title, callback) => {
const configButton = document.createElement('button');
const configText = document.createTextNode(icon);
configButton.title = title;
configButton.style.padding = '0';
configButton.style.fontSize = '10px';
configButton.style.marginRight = '4px';
configButton.style.cursor = 'pointer';
configButton.style.background = 'none';
configButton.style.border = 'none';
configButton.style.transition = 'filter 0.1s ease-in-out, background-color 0.1s ease-in-out';
configButton.append(configText);
configButton.addEventListener('mouseover', (e) => {
if (!configButton.disabled) {
configButton.style.filter = 'brightness(1.2)';
configButton.style.background = 'white';
}
});
configButton.addEventListener('mouseout', (e) => {
if (!configButton.disabled) {
configButton.style.filter = 'none';
configButton.style.background = 'none';
}
});
configButton.addEventListener('click', (e) => {
e.preventDefault();
e.stopPropagation();
callback();
});
return configButton;
}
const showEditMenu = () => {
hideEditMenu();
const settings = loadSettings();
const communties = document.querySelector('.communities');
const background = document.createElement('div');
const container = document.createElement('ol');
background.id = 'community-bar-editor';
background.style.backgroundColor = 'rgba(0,0,0,0.5)';
background.style.position = 'absolute';
background.style.top = 0;
background.style.left = 0;
background.style.width = '100%';
background.style.height = '100vh';
background.style.zIndex = '102';
container.style.backgroundColor = '#ccc';
container.style.position = 'absolute';
container.style.top = '8px';
container.style.right = 0;
container.style.padding = '4px';
container.style.border = '1px #ccc solid';
background.addEventListener('click', (e) => {
e.preventDefault();
e.stopPropagation();
hideEditMenu();
});
background.append(container);
communties.append(background);
settings.communities.map((community, communityIndex) => {
const item = document.createElement('li');
const text = document.createTextNode(community);
const deleteButton = createConfigButton('❌', 'Remove community from your favourites', () => {
updateSettings(settings.communities.filter((communityName) =>
communityName !== community
));
showEditMenu();
});
const upButton = createConfigButton('⬆️', 'Move this community up in the list', () => {
const { communities } = settings;
[
communities[communityIndex - 1],
communities[communityIndex]
] = [
communities[communityIndex],
communities[communityIndex - 1]
];
updateSettings(communities);
showEditMenu();
});
if (communityIndex === 0) {
upButton.disabled = true;
upButton.style.cursor = 'default';
}
const downButton = createConfigButton('⬇️', 'Move this community down in the list', () => {
const { communities } = settings;
[
communities[communityIndex + 1],
communities[communityIndex]
] = [
communities[communityIndex],
communities[communityIndex + 1]
];
updateSettings(communities);
showEditMenu();
});
if (communityIndex === settings.communities.length - 1) {
downButton.disabled = true;
downButton.style.cursor = 'default';
}
item.style.display = 'block';
item.style.fontSize = '10px';
item.style.fontWeight = '400';
item.style.color = '#000';
item.append(deleteButton);
item.append(upButton);
item.append(downButton);
item.append(text);
container.append(item);
})
const buttonRow = document.createElement('li');
const addButton = document.createElement('button')
const addText = document.createTextNode('add');
const closeButton = document.createElement('button')
const closeText = document.createTextNode('finish editing');
const separatorText = document.createTextNode(' ');
addButton.append(addText);
closeButton.append(closeText);
buttonRow.append(addButton);
buttonRow.append(separatorText);
buttonRow.append(closeButton);
container.append(buttonRow);
addButton.style.cursor = 'pointer';
addButton.addEventListener('click', (e) => {
e.preventDefault();
e.stopPropagation();
const newCommunity = prompt('New community to add, make sure you include the instance suffix if it isn\'t a local community');
updateSettings(settings.communities.concat(newCommunity));
showEditMenu();
})
closeButton.style.cursor = 'pointer';
closeButton.addEventListener('click', (e) => {
e.preventDefault();
e.stopPropagation();
hideEditMenu();
window.location.reload();
})
};
const addFavouriteButton = () => {
const { pathname } = window.location;
if (!(pathname.startsWith('/c/') || pathname.startsWith('/post/'))) {
return;
}
const { communities } = loadSettings();
const thisCommunityTitle = document.querySelector('nav .title').textContent.trim();
const alreadySubscribed = communities.includes(thisCommunityTitle);
const sidebar = document.querySelector('.side');
const blockButton = document.querySelector('.side .block');
const favouriteButton = document.createElement('button');
const favouriteText = document.createTextNode( alreadySubscribed ? 'unfavourite' : 'favourite');
favouriteButton.style.fontSize = '10px';
favouriteButton.style.fontWeight = 'bold';
favouriteButton.style.display = 'inline-block';
favouriteButton.style.padding = '1px 4px';
favouriteButton.style.borderRadius = '4px';
favouriteButton.style.border = '1px solid #444444';
favouriteButton.style.color = 'white';
favouriteButton.style.position = 'relative';
favouriteButton.style.bottom = '1px';
favouriteButton.style.cursor = 'pointer';
favouriteButton.style.backgroundColor = alreadySubscribed ? '#cf6165' : 'green';
favouriteButton.style.marginRight = '4px';
favouriteButton.addEventListener('click', (e) => {
e.preventDefault();
e.stopPropagation();
updateSettings(
alreadySubscribed
? communities.filter((title) => title !== thisCommunityTitle)
: communities.concat(thisCommunityTitle)
);
window.location.reload();
});
favouriteButton.append(favouriteText);
sidebar.insertBefore(favouriteButton, blockButton);
}
const addEditButton = () => {
const more = document.querySelector('.communities .more');
const communties = document.querySelector('.communities');
const button = document.createElement('button');
const buttonSpan = document.createElement('span');
const buttonText = document.createTextNode('⚙️');
buttonSpan.append(buttonText);
button.append(buttonSpan);
communties.append(button);
more.style.right = '20px';
button.title = 'Edit favourite communities';
button.style.backgroundColor = '#ccc';
button.style.position = 'absolute';
button.style.top = 0;
button.style.right = 0;
button.style.border = 0;
button.style.fontSize = '10px';
button.style.cursor = 'pointer';
buttonSpan.style.filter = 'brightness(0.5)';
button.addEventListener('click', (e) => {
e.preventDefault();
e.stopPropagation();
const container = document.querySelector('#community-bar-editor');
if (container) {
hideEditMenu();
} else {
showEditMenu();
}
});
}
const addCommunityToBar = (name) => {
const shortName = name.split('@')[0];
const a = document.createElement('a');
const link = document.createTextNode(shortName);
const separator = document.createTextNode(" - ");
a.appendChild(link);
a.href = `/c/${name}`;
a.title = `Go to !${name}`;
const communities = document.querySelector('.communities')
const firstLink = document.querySelector('.communities a:nth-child(5)')
communities.insertBefore(separator, firstLink);
communities.insertBefore(a, separator);
}
loadSettings().communities.reverse().map(addCommunityToBar)
addEditButton();
addFavouriteButton();
})();