import { Type } from "../type.ts";
const YAML_DATE_REGEXP = new RegExp( "^([0-9][0-9][0-9][0-9])" + "-([0-9][0-9])" + "-([0-9][0-9])$", );
const YAML_TIMESTAMP_REGEXP = new RegExp( "^([0-9][0-9][0-9][0-9])" + "-([0-9][0-9]?)" + "-([0-9][0-9]?)" + "(?:[Tt]|[ \\t]+)" + "([0-9][0-9]?)" + ":([0-9][0-9])" + ":([0-9][0-9])" + "(?:\\.([0-9]*))?" + "(?:[ \\t]*(Z|([-+])([0-9][0-9]?)" + "(?::([0-9][0-9]))?))?$", );
function resolveYamlTimestamp(data: string): boolean { if (data === null) return false; if (YAML_DATE_REGEXP.exec(data) !== null) return true; if (YAML_TIMESTAMP_REGEXP.exec(data) !== null) return true; return false;}
function constructYamlTimestamp(data: string): Date { let match = YAML_DATE_REGEXP.exec(data); if (match === null) match = YAML_TIMESTAMP_REGEXP.exec(data);
if (match === null) throw new Error("Date resolve error");
const year = +match[1]; const month = +match[2] - 1; const day = +match[3];
if (!match[4]) { return new Date(Date.UTC(year, month, day)); }
const hour = +match[4]; const minute = +match[5]; const second = +match[6];
let fraction = 0; if (match[7]) { let partFraction = match[7].slice(0, 3); while (partFraction.length < 3) { partFraction += "0"; } fraction = +partFraction; }
let delta = null; if (match[9]) { const tzHour = +match[10]; const tzMinute = +(match[11] || 0); delta = (tzHour * 60 + tzMinute) * 60000; if (match[9] === "-") delta = -delta; }
const date = new Date( Date.UTC(year, month, day, hour, minute, second, fraction), );
if (delta) date.setTime(date.getTime() - delta);
return date;}
function representYamlTimestamp(date: Date): string { return date.toISOString();}
export const timestamp = new Type("tag:yaml.org,2002:timestamp", { construct: constructYamlTimestamp, instanceOf: Date, kind: "scalar", represent: representYamlTimestamp, resolve: resolveYamlTimestamp,});