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/** Function that can be used to wait for a condition before returning. */
async function wait<T>(condition: () => T | false, timeout = 5000, check = 100): Promise<T> {
return await new Promise((resolve, reject) => {
setTimeout(() => {
clearInterval(interval);
reject("TIMEOUT");
}, timeout);
const intervalCheck = () => {
const result = condition();
if (result) {
resolve(result);
clearInterval(interval);
}
};
const interval = setInterval(intervalCheck, check);
//run the check once first, this speeds it up a lot
intervalCheck();
});
}
/**
* 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;
}
/**
* List of all indexes that have the specified value
* https://stackoverflow.com/a/54954694/1985387
*/
function indexesOf<T>(array: T[], value: T): number[] {
return array.map((v, i) => v === value ? i : -1).filter(i => i !== -1);
}
export const GenericUtils = {
wait,
getErrorMessage,
getLuminance,
indexesOf
}
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