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/** Function that can be used to wait for a condition before returning. */
async function wait<T>(condition: () => T, timeout = 5000, check = 100, predicate?: (obj: T) => boolean): Promise<T> {
return await new Promise((resolve, reject) => {
setTimeout(() => {
clearInterval(interval);
reject("TIMEOUT");
}, timeout);
const intervalCheck = () => {
const result = condition();
if (predicate ? predicate(result) : result) {
resolve(result);
clearInterval(interval);
}
};
const interval = setInterval(intervalCheck, check);
//run the check once first, this speeds it up a lot
intervalCheck();
});
}
function getFormattedTimeToSeconds(formatted: string): number | null {
const fragments = /^(?:(?:(\d+):)?(\d+):)?(\d*(?:[.,]\d+)?)$/.exec(formatted);
if (fragments === null) {
return null;
}
const hours = fragments[1] ? parseInt(fragments[1]) : 0;
const minutes = fragments[2] ? parseInt(fragments[2] || '0') : 0;
const seconds = fragments[3] ? parseFloat(fragments[3].replace(',', '.')) : 0;
return hours * 3600 + minutes * 60 + seconds;
}
function getFormattedTime(seconds: number, precise?: boolean): string {
seconds = Math.max(seconds, 0);
const hours = Math.floor(seconds / 60 / 60);
const minutes = Math.floor(seconds / 60) % 60;
let minutesDisplay = String(minutes);
let secondsNum = seconds % 60;
if (!precise) {
secondsNum = Math.floor(secondsNum);
}
let secondsDisplay = 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;
}
if (isNaN(hours) || isNaN(minutes)) {
return null;
}
const formatted = (hours ? hours + ":" : "") + minutesDisplay + ":" + secondsDisplay;
return formatted;
}
/**
* Gets the error message in a nice string
*
* @param {int} statusCode
* @returns {string} errorMessage
*/
function getErrorMessage(statusCode: number, responseText: string): string {
const postFix = ((responseText && !responseText.includes(`cf-wrapper`)) ? "\n\n" + responseText : "");
// display response body for 4xx
if([400, 429, 409, 0].includes(statusCode)) {
return chrome.i18n.getMessage(statusCode + "") + " " + chrome.i18n.getMessage("errorCode") + statusCode + postFix;
} else if (statusCode >= 500 && statusCode <= 599) {
// 503 == 502
if (statusCode == 503) statusCode = 502;
return chrome.i18n.getMessage(statusCode + "") + " " + chrome.i18n.getMessage("errorCode") + statusCode
+ "\n\n" + chrome.i18n.getMessage("statusReminder");
} else {
return chrome.i18n.getMessage("connectionError") + statusCode + postFix;
}
}
/* Gets percieved luminance of a color */
function getLuminance(color: string): number {
const {r, g, b} = hexToRgb(color);
return Math.sqrt(0.299 * (r * r) + 0.587 * (g * g) + 0.114 * (b * b));
}
/* From https://stackoverflow.com/a/5624139 */
function hexToRgb(hex: string): {r: number, g: number, b: number} {
// Expand shorthand form (e.g. "03F") to full form (e.g. "0033FF")
const shorthandRegex = /^#?([a-f\d])([a-f\d])([a-f\d])$/i;
hex = hex.replace(shorthandRegex, function(m, r, g, b) {
return r + r + g + g + b + b;
});
const result = /^#?([a-f\d]{2})([a-f\d]{2})([a-f\d]{2})$/i.exec(hex);
return result ? {
r: parseInt(result[1], 16),
g: parseInt(result[2], 16),
b: parseInt(result[3], 16)
} : null;
}
function generateUserID(length = 36): string {
const charset = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
let result = "";
if (window.crypto && window.crypto.getRandomValues) {
const 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;
}
}
export const GenericUtils = {
wait,
getFormattedTime,
getFormattedTimeToSeconds,
getErrorMessage,
getLuminance,
generateUserID
}
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