safer-indie-wiki-buddy/scripts/common-functions.js

276 lines
10 KiB
JavaScript

var LANGS = ["DE", "EN", "ES", "FI", "FR", "HU", "IT", "JA", "LZH", "KO", "PL", "PT", "RU", "TH", "TOK", "UK", "ZH"];
var BASE64REGEX = /^([0-9a-zA-Z+/]{4})*(([0-9a-zA-Z+/]{2}==)|([0-9a-zA-Z+/]{3}=))?$/;
function b64decode(str) {
const binary_string = atob(str);
const len = binary_string.length;
const bytes = new Uint8Array(new ArrayBuffer(len));
for (let i = 0; i < len; i++) {
bytes[i] = binary_string.charCodeAt(i);
}
return bytes;
}
async function commonFunctionDecompressJSON(value) {
// Check if value is base64 encoded:
if (BASE64REGEX.test(value)) {
// Decode into blob
const stream = new Blob([b64decode(value)], {
type: "application/json",
}).stream();
// Decompress value
const decompressedReadableStream = stream.pipeThrough(
new DecompressionStream("gzip")
);
const resp = new Response(decompressedReadableStream);
const blob = await resp.blob();
const blobText = JSON.parse(await blob.text());
return blobText;
} else {
return value;
}
}
async function commonFunctionCompressJSON(value) {
const stream = new Blob([JSON.stringify(value)], {
type: 'application/json',
}).stream();
// Compress stream with gzip
const compressedReadableStream = stream.pipeThrough(
new CompressionStream("gzip")
);
const compressedResponse = new Response(compressedReadableStream);
// Convert response to blob and buffer
const blob = await compressedResponse.blob();
const buffer = await blob.arrayBuffer();
// Encode and return string
return btoa(
String.fromCharCode(
...new Uint8Array(buffer)
)
);
}
// Load wiki data objects, with each destination having its own object
async function commonFunctionGetSiteDataByDestination() {
var sites = [];
let promises = [];
for (let i = 0; i < LANGS.length; i++) {
promises.push(fetch(chrome.runtime.getURL('data/sites' + LANGS[i] + '.json'))
.then((resp) => resp.json())
.then((jsonData) => {
jsonData.forEach((site) => site.language = LANGS[i]);
sites = sites.concat(jsonData);
}));
}
await Promise.all(promises);
return sites;
}
async function populateSiteDataByOrigin() {
// Populate with the site data
let sites = [];
let promises = [];
for (let i = 0; i < LANGS.length; i++) {
promises.push(fetch(chrome.runtime.getURL('data/sites' + LANGS[i] + '.json'))
.then((resp) => resp.json())
.then((jsonData) => {
jsonData.forEach((site) => {
site.origins.forEach((origin) => {
sites.push({
"id": site.id,
"origin": origin.origin,
"origin_base_url": origin.origin_base_url,
"origin_content_path": origin.origin_content_path,
"origin_main_page": origin.origin_main_page,
"destination": site.destination,
"destination_base_url": site.destination_base_url,
"destination_search_path": site.destination_search_path,
"destination_content_prefix": origin.destination_content_prefix || site.destination_content_prefix || "",
// /w/index.php?title= is the default path for a new MediaWiki install, change as accordingly in config JSON files
"destination_content_path": site.destination_content_path || "/w/index.php?title=",
"destination_content_suffix": origin.destination_content_suffix || site.destination_content_suffix || "",
"destination_platform": site.destination_platform,
"destination_icon": site.destination_icon,
"destination_main_page": site.destination_main_page,
"tags": site.tags || [],
"language": LANGS[i]
})
})
});
}));
}
await Promise.all(promises);
window.iwb_siteDataByOrigin = sites;
return window.iwb_siteDataByOrigin;
}
// Load wiki data objects, with each origin having its own object
async function commonFunctionGetSiteDataByOrigin() {
if (!window.iwb_siteDataByOrigin || window.iwb_siteDataByOrigin.length === 0) {
await populateSiteDataByOrigin();
}
return window.iwb_siteDataByOrigin;
}
// Given a URL, find closest match in our dataset
async function commonFunctionFindMatchingSite(site, crossLanguageSetting, dest = false) {
let base_url_key = dest ? 'destination_base_url' : 'origin_base_url';
let matchingSite = commonFunctionGetSiteDataByOrigin().then(sites => {
let matchingSites = [];
if (crossLanguageSetting === 'on') {
matchingSites = sites.filter(el => site.replace(/.*https?:\/\//, '').startsWith(el[base_url_key]));
} else {
matchingSites = sites.filter(el =>
site.replace(/.*https?:\/\//, '').startsWith(dest ? el[base_url_key] : (el.origin_base_url + el.origin_content_path))
|| site.replace(/.*https?:\/\//, '').replace(/\/$/, '') === el[base_url_key]
);
}
if (matchingSites.length > 0) {
// Select match with longest base URL
let closestMatch = '';
matchingSites.forEach(site => {
if (site[base_url_key].length > closestMatch.length) {
closestMatch = site[base_url_key];
}
});
return matchingSites.find(site => site[base_url_key] === closestMatch);
} else {
return null;
}
});
return matchingSite;
}
function commonFunctionGetOriginArticle(originURL, matchingSite) {
let url = new URL(originURL);
return decodeURIComponent(String(url.pathname).split(matchingSite['origin_content_path'])[1] || '');
}
function commonFunctionGetDestinationArticle(matchingSite, article) {
return matchingSite['destination_content_prefix'] + article + matchingSite['destination_content_suffix'];
}
function commonFunctionGetNewURL(originURL, matchingSite) {
// Get article name from the end of the URL;
// We can't just take the last part of the path due to subpages;
// Instead, we take everything after the wiki's base URL + content path
let originArticle = commonFunctionGetOriginArticle(originURL, matchingSite);
let destinationArticle = commonFunctionGetDestinationArticle(matchingSite, originArticle);
// Set up URL to redirect user to based on wiki platform
let newURL = '';
if (originArticle) {
// Check if main page
if (originArticle === matchingSite['origin_main_page']) {
switch (matchingSite['destination_platform']) {
case 'dokuwiki':
destinationArticle = '';
break;
default:
destinationArticle = matchingSite['destination_main_page'] + matchingSite['destination_content_suffix'];
}
}
// Replace underscores with spaces as that performs better in search
destinationArticle = destinationArticle.replaceAll('_', ' ');
// If a Fextralife wiki, replace plus signs with spaces
// When there are multiple plus signs together, this regex will only replace only the first
if (matchingSite['origin_base_url'].includes('.wiki.fextralife.com')) {
destinationArticle = destinationArticle.replace(/(?<!\+)\+/g, ' ');
}
// Encode article
destinationArticle = encodeURIComponent(destinationArticle);
let searchParams = '';
switch (matchingSite['destination_platform']) {
case 'mediawiki':
searchParams = '?title=Special:Search&search=' + destinationArticle;
break;
case 'dokuwiki':
searchParams = '?do=search&q=' + destinationArticle;
break;
}
newURL = 'https://' + matchingSite["destination_base_url"] + matchingSite["destination_search_path"] + searchParams;
} else {
newURL = 'https://' + matchingSite["destination_base_url"];
}
return newURL;
}
// Temporary function to migrate user data to IWB version 3.0+
async function commonFunctionMigrateToV3() {
await chrome.storage.sync.get(async (storage) => {
if (!storage.v3migration) {
let defaultWikiAction = storage.defaultWikiAction || 'alert';
let defaultSearchAction = storage.defaultSearchAction || 'replace';
// Set new default action settings:
if (!storage.defaultWikiAction) {
if (storage.defaultActionSettings && storage.defaultActionSettings['EN']) {
defaultWikiAction = storage.defaultActionSettings['EN'];
}
chrome.storage.sync.set({ 'defaultWikiAction': defaultWikiAction });
}
if (!storage.defaultSearchAction) {
if (storage.defaultSearchFilterSettings && storage.defaultSearchFilterSettings['EN']) {
if (storage.defaultSearchFilterSettings['EN'] === 'false') {
defaultSearchAction = 'disabled';
} else {
defaultSearchAction = 'replace';
}
}
chrome.storage.sync.set({ 'defaultSearchAction': defaultSearchAction });
}
// Remove old objects:
chrome.storage.sync.remove('defaultActionSettings');
chrome.storage.sync.remove('defaultSearchFilterSettings');
// Migrate wiki settings to new searchEngineSettings and wikiSettings objects
sites = await commonFunctionGetSiteDataByOrigin();
let siteSettings = storage.siteSettings || {};
let searchEngineSettings = await commonFunctionDecompressJSON(storage.searchEngineSettings || {});
let wikiSettings = await commonFunctionDecompressJSON(storage.wikiSettings) || {};
sites.forEach((site) => {
if (!searchEngineSettings[site.id]) {
if (siteSettings[site.id] && siteSettings[site.id].searchFilter) {
if (siteSettings[site.id].searchFilter === 'false') {
searchEngineSettings[site.id] = 'disabled';
} else {
searchEngineSettings[site.id] = 'replace';
}
} else {
searchEngineSettings[site.id] = defaultSearchAction;
}
}
if (!wikiSettings[site.id]) {
wikiSettings[site.id] = siteSettings[site.id]?.action || defaultWikiAction;
}
});
chrome.storage.sync.set({ 'searchEngineSettings': await commonFunctionCompressJSON(searchEngineSettings) });
chrome.storage.sync.set({ 'wikiSettings': await commonFunctionCompressJSON(wikiSettings) });
// Remove old object:
chrome.storage.sync.remove('siteSettings');
// Mark v3 migration as complete:
chrome.storage.sync.set({ 'v3migration': 'done' });
}
});
}