/** * 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`) || responseText.includes(""))) ? "\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(array: T[], value: T): number[] { return array.map((v, i) => v === value ? i : -1).filter(i => i !== -1); } export const GenericUtils = { getErrorMessage, getLuminance, indexesOf }