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import Config from "./config";
import { CategorySelection, SponsorTime, FetchResponse } from "./types";
import * as CompileConfig from "../config.json";
class Utils {
// Contains functions needed from the background script
backgroundScriptContainer: any = null;
// Used to add content scripts and CSS required
js = [
"./js/vendor.js",
"./js/content.js"
];
css = [
"content.css",
"./libs/Source+Sans+Pro.css",
"popup.css"
];
constructor(backgroundScriptContainer?: any) {
this.backgroundScriptContainer = backgroundScriptContainer;
}
// Function that can be used to wait for a condition before returning
async wait(condition, timeout = 5000, check = 100) {
return await new Promise((resolve, reject) => {
setTimeout(() => reject("TIMEOUT"), timeout);
let intervalCheck = () => {
let result = condition();
if (result !== false) {
resolve(result);
clearInterval(interval);
};
};
let interval = setInterval(intervalCheck, check);
//run the check once first, this speeds it up a lot
intervalCheck();
});
}
/**
* Asks for the optional permissions required for all extra sites.
* It also starts the content script registrations.
*
* For now, it is just SB.config.invidiousInstances.
*
* @param {CallableFunction} callback
*/
setupExtraSitePermissions(callback) {
// Request permission
let permissions = ["declarativeContent"];
if (this.isFirefox()) permissions = [];
let self = this;
chrome.permissions.request({
origins: this.getInvidiousInstancesRegex(),
permissions: permissions
}, async function (granted) {
if (granted) {
self.setupExtraSiteContentScripts();
} else {
self.removeExtraSiteRegistration();
}
callback(granted);
});
}
/**
* Registers the content scripts for the extra sites.
* Will use a different method depending on the browser.
* This is called by setupExtraSitePermissions().
*
* For now, it is just SB.config.invidiousInstances.
*/
setupExtraSiteContentScripts() {
let self = this;
if (this.isFirefox()) {
let firefoxJS = [];
for (const file of this.js) {
firefoxJS.push({file});
}
let firefoxCSS = [];
for (const file of this.css) {
firefoxCSS.push({file});
}
let registration = {
message: "registerContentScript",
id: "invidious",
allFrames: true,
js: firefoxJS,
css: firefoxCSS,
matches: this.getInvidiousInstancesRegex()
};
if (this.backgroundScriptContainer) {
this.backgroundScriptContainer.registerFirefoxContentScript(registration);
} else {
chrome.runtime.sendMessage(registration);
}
} else {
chrome.declarativeContent.onPageChanged.removeRules(["invidious"], function() {
let conditions = [];
for (const regex of self.getInvidiousInstancesRegex()) {
conditions.push(new chrome.declarativeContent.PageStateMatcher({
pageUrl: { urlMatches: regex }
}));
}
// Add page rule
let rule = {
id: "invidious",
conditions,
// This API is experimental and not visible by the TypeScript compiler
actions: [new (<any> chrome.declarativeContent).RequestContentScript({
allFrames: true,
js: self.js,
css: self.css
})]
};
chrome.declarativeContent.onPageChanged.addRules([rule]);
});
}
}
/**
* Removes the permission and content script registration.
*/
removeExtraSiteRegistration() {
if (this.isFirefox()) {
let id = "invidious";
if (this.backgroundScriptContainer) {
this.backgroundScriptContainer.unregisterFirefoxContentScript(id);
} else {
chrome.runtime.sendMessage({
message: "unregisterContentScript",
id: id
});
}
} else if (chrome.declarativeContent) {
// Only if we have permission
chrome.declarativeContent.onPageChanged.removeRules(["invidious"]);
}
chrome.permissions.remove({
origins: this.getInvidiousInstancesRegex()
});
}
/**
* Gets just the timestamps from a sponsorTimes array
*
* @param sponsorTimes
*/
getSegmentsFromSponsorTimes(sponsorTimes: SponsorTime[]): number[][] {
let segments: number[][] = [];
for (const sponsorTime of sponsorTimes) {
segments.push(sponsorTime.segment);
}
return segments;
}
getSponsorIndexFromUUID(sponsorTimes: SponsorTime[], UUID: string): number {
for (let i = 0; i < sponsorTimes.length; i++) {
if (sponsorTimes[i].UUID === UUID) {
return i;
}
}
return -1;
}
getSponsorTimeFromUUID(sponsorTimes: SponsorTime[], UUID: string): SponsorTime {
return sponsorTimes[this.getSponsorIndexFromUUID(sponsorTimes, UUID)];
}
getCategorySelection(category: string): CategorySelection {
for (const selection of Config.config.categorySelections) {
if (selection.name === category) {
return selection;
}
}
}
localizeHtmlPage() {
//Localize by replacing __MSG_***__ meta tags
var objects = document.getElementsByClassName("sponsorBlockPageBody")[0].children;
for (var j = 0; j < objects.length; j++) {
var obj = objects[j];
let localizedMessage = this.getLocalizedMessage(obj.innerHTML.toString());
if (localizedMessage) obj.innerHTML = localizedMessage;
}
}
getLocalizedMessage(text) {
var valNewH = text.replace(/__MSG_(\w+)__/g, function(match, v1) {
return v1 ? chrome.i18n.getMessage(v1) : "";
});
if(valNewH != text) {
return valNewH;
} else {
return false;
}
}
/**
* @returns {String[]} Invidious Instances in regex form
*/
getInvidiousInstancesRegex() {
var invidiousInstancesRegex = [];
for (const url of Config.config.invidiousInstances) {
invidiousInstancesRegex.push("https://*." + url + "/*");
invidiousInstancesRegex.push("http://*." + url + "/*");
}
return invidiousInstancesRegex;
}
generateUserID(length = 36) {
let charset = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
let result = "";
if (window.crypto && window.crypto.getRandomValues) {
let values = new Uint32Array(length);
window.crypto.getRandomValues(values);
for (let i = 0; i < length; i++) {
result += charset[values[i] % charset.length];
}
return result;
} else {
for (let i = 0; i < length; i++) {
result += charset[Math.floor(Math.random() * charset.length)];
}
return result;
}
}
/**
* Gets the error message in a nice string
*
* @param {int} statusCode
* @returns {string} errorMessage
*/
getErrorMessage(statusCode) {
let errorMessage = "";
if([400, 429, 409, 502, 0].includes(statusCode)) {
//treat them the same
if (statusCode == 503) statusCode = 502;
errorMessage = chrome.i18n.getMessage(statusCode + "") + " " + chrome.i18n.getMessage("errorCode") + statusCode
+ "\n\n" + chrome.i18n.getMessage("statusReminder");
} else {
errorMessage = chrome.i18n.getMessage("connectionError") + statusCode;
}
return errorMessage;
}
/**
* Sends a request to a custom server
*
* @param type The request type. "GET", "POST", etc.
* @param address The address to add to the SponsorBlock server address
* @param callback
*/
async asyncRequestToCustomServer(type: string, url: string, data = {}): Promise<FetchResponse> {
return new Promise((resolve) => {
// Ask the background script to do the work
chrome.runtime.sendMessage({
message: "sendRequest",
type,
url,
data
}, (response) => {
resolve(response);
});
})
}
/**
* Sends a request to the SponsorBlock server with address added as a query
*
* @param type The request type. "GET", "POST", etc.
* @param address The address to add to the SponsorBlock server address
* @param callback
*/
async asyncRequestToServer(type: string, address: string, data = {}): Promise<FetchResponse> {
let serverAddress = Config.config.testingServer ? CompileConfig.testingServerAddress : Config.config.serverAddress;
return await (this.asyncRequestToCustomServer(type, serverAddress + address, data));
}
/**
* Sends a request to the SponsorBlock server with address added as a query
*
* @param type The request type. "GET", "POST", etc.
* @param address The address to add to the SponsorBlock server address
* @param callback
*/
sendRequestToServer(type: string, address: string, callback?: (response: FetchResponse) => void) {
let serverAddress = Config.config.testingServer ? CompileConfig.testingServerAddress : Config.config.serverAddress;
// Ask the background script to do the work
chrome.runtime.sendMessage({
message: "sendRequest",
type,
url: serverAddress + address
}, (response) => {
callback(response);
});
}
getFormattedMinutes(seconds: number) {
return Math.floor(seconds / 60);
}
getFormattedSeconds(seconds: number) {
return seconds % 60;
}
getFormattedTime(seconds: number, precise?: boolean): string {
let hours = Math.floor(seconds / 60 / 60);
let minutes = Math.floor(seconds / 60) % 60;
let minutesDisplay = String(minutes);
let secondsNum = seconds % 60;
if (!precise) {
secondsNum = Math.floor(secondsNum);
}
let secondsDisplay: string = String(precise ? secondsNum.toFixed(3) : secondsNum);
if (secondsNum < 10) {
//add a zero
secondsDisplay = "0" + secondsDisplay;
}
if (hours && minutes < 10) {
//add a zero
minutesDisplay = "0" + minutesDisplay;
}
let formatted = (hours ? hours + ":" : "") + minutesDisplay + ":" + secondsDisplay;
return formatted;
}
shortCategoryName(categoryName: string): string {
return chrome.i18n.getMessage("category_" + categoryName + "_short") || chrome.i18n.getMessage("category_" + categoryName);
}
getRawSeconds(minutes: number, seconds: number): number {
return minutes * 60 + seconds;
}
isContentScript(): boolean {
return window.location.protocol === "http:" || window.location.protocol === "https:";
}
isHex(num: string): boolean {
return Boolean(num.match(/^[0-9a-f]+$/i));
}
/**
* Is this Firefox (web-extensions)
*/
isFirefox(): boolean {
return typeof(browser) !== "undefined";
}
}
export default Utils;
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