"use strict";
const compile = require("./compile.js");
const normalizeUnit = require("./normalizeUnit-Cn0hUyBC.js");
const units = require("./units.js");
const BASIC_ISO_REGEX = /^\s*((?:[+-]\d{6}|\d{4})(?:\d\d\d\d|W\d\d\d|W\d\d|\d\d\d|\d\d|))(?:(T| )(\d\d(?:\d\d(?:\d\d(?:[.,]\d+)?)?)?)([+-]\d\d(?::?\d\d)?|\s*Z)?)?$/;
const EXTENDED_ISO_REGEX = /^\s*((?:[+-]\d{6}|\d{4})-(?:\d\d-\d\d|W\d\d-\d|W\d\d|\d\d\d|\d\d))(?:(T| )(\d\d(?::\d\d(?::\d\d(?:[.,]\d+)?)?)?)([+-]\d\d(?::?\d\d)?|\s*Z)?)?$/;
const ISO_TIMES_REGEX = [
  /(\d\d):(\d\d):(\d\d)\.(\d+)/,
  // 'HH:mm:ss.SSSS'
  /(\d\d):(\d\d):(\d\d),(\d+)/,
  // 'HH:mm:ss,SSSS'
  /(\d\d):(\d\d):(\d\d)/,
  // 'HH:mm:ss'
  /(\d\d):(\d\d)/,
  // 'HH:mm'
  /(\d\d)(\d\d)(\d\d)\.(\d+)/,
  // 'HHmmss.SSSS'
  /(\d\d)(\d\d)(\d\d),(\d+)/,
  // 'HHmmss,SSSS'
  /(\d\d)(\d\d)(\d\d)/,
  // 'HHmmss'
  /(\d\d)(\d\d)/,
  // 'HHmm'
  /(\d\d)/
  // 'HH'
];
const TZ_REGEX = /(Z)|([+-]\d\d)(?::?(\d\d))?/;
const ISO_DATES_REGEX = [
  /(\d{4})-(\d\d)-(\d\d)/,
  // 'YYYY-MM-DD'
  /(\d{4})-(\d\d)/,
  // 'YYYY-MM'
  /(\d{4})(\d\d)(\d\d)/,
  // 'YYYYMMDD'
  /(\d{4})(\d\d)/,
  // 'YYYYMM'
  /(\d{4})/
  // 'YYYY'
];
function autoExtract(input) {
  const dateRet = new Array(8);
  let matches;
  const match = EXTENDED_ISO_REGEX.exec(input) || BASIC_ISO_REGEX.exec(input);
  if (match) {
    const datesLen = ISO_DATES_REGEX.length;
    for (let i = 0; i < datesLen; i++) {
      if (matches = ISO_DATES_REGEX[i].exec(match[1])) {
        for (let j = 0; j < 3; j++) {
          const matched = matches[j + 1];
          dateRet[j] = matched ? +matched : 1;
        }
        if (dateRet[1]) {
          dateRet[1] -= 1;
        }
        break;
      }
    }
    matches = null;
    if (match[3]) {
      for (let i = 0, timesLen = ISO_TIMES_REGEX.length; i < timesLen; i++) {
        if (matches = ISO_TIMES_REGEX[i].exec(match[3])) {
          if (matches[4]) {
            matches[4] = matches[4].padEnd(3, "00");
          }
          for (let j = 1, len = matches.length; j < len; j++) {
            dateRet[j + 2] = +matches[j];
          }
          break;
        }
      }
    }
    matches = null;
    if (match[4]) {
      matches = TZ_REGEX.exec(match[4]);
      if (matches) {
        dateRet[7] = matches[1] ? NaN : +matches[2] * 60 + (matches[3] ? +matches[3] : 0);
      }
    }
    return dateRet;
  }
  return input;
}
function createDate(y, m, d, h, minute, s, ms) {
  let date;
  if (y < 100 && y >= 0) {
    date = new Date(y + 400, m, d, h, minute, s, ms);
    if (isFinite(date.getFullYear())) {
      date.setFullYear(y);
    }
  } else {
    date = new Date(y, m, d, h, minute, s, ms);
  }
  return date;
}
function createUTCDate(y, m, d, h, minute, s, ms) {
  let date;
  if (y < 100 && y >= 0) {
    y += 400;
    date = new Date(Date.UTC(y, m, d, h, minute, s, ms));
    if (isFinite(date.getUTCFullYear())) {
      date.setUTCFullYear(y);
    }
  } else {
    date = new Date(Date.UTC(y, m, d, h, minute, s, ms));
  }
  return date;
}
function createFromArray(input) {
  const utcOffset = input[7];
  const currentDate = /* @__PURE__ */ new Date();
  const isUTC = Number.isNaN(utcOffset);
  const flag = isUTC ? "UTC" : "";
  const currentStuffing = [
    currentDate[`get${flag}FullYear`](),
    currentDate[`get${flag}Month`](),
    currentDate[`get${flag}Date`]()
  ];
  let i = 0;
  const array = new Array(7);
  for (; i < 3 && input[i] == null; ++i) {
    array[i] = currentStuffing[i];
  }
  for (; i < 7; i++) {
    array[i] = input[i] == null ? 0 : input[i];
  }
  let day = array[2];
  if (day === 0) {
    day = 1;
  }
  let minute = array[4];
  if (!isUTC && typeof utcOffset === "number") {
    minute -= utcOffset + currentDate.getTimezoneOffset();
  }
  return (isUTC ? createUTCDate : createDate)(
    array[0],
    array[1],
    day,
    array[3],
    minute,
    array[5],
    array[6]
  );
}
function toInteger(val) {
  return parseInt(val, 10);
}
function toMonth(val) {
  return parseInt(val, 10) - 1;
}
function toMilliseconds(val) {
  return parseInt(val.padEnd(3, "0"), 10);
}
function parseTimezone(val) {
  if (val === "Z") {
    return NaN;
  }
  const matches = TZ_REGEX.exec(val);
  return +matches[2] * 60 + (matches[3] ? +matches[3] : 0);
}
function extractWithFormat(input, format) {
  const { pattern, tokens } = compile(format);
  const match = new RegExp(pattern).exec(input);
  if (!match) {
    return "";
  }
  const parts = [];
  tokens.forEach((token, i) => {
    const value = match[i + 1];
    switch (token) {
      case "YYYY":
        parts[0] = toInteger(value);
        break;
      // case 'YY':
      //   parts[0] = toInteger(value);
      //   break;
      case "MM":
        parts[1] = toMonth(value);
        break;
      case "DD":
        parts[2] = toInteger(value);
        break;
      case "HH":
        parts[3] = toInteger(value);
        break;
      case "mm":
        parts[4] = toInteger(value);
        break;
      case "ss":
        parts[5] = toInteger(value);
        break;
      case "SSS":
        parts[6] = toMilliseconds(value);
        break;
      case "Z":
        parts[7] = parseTimezone(value);
        break;
    }
  });
  return parts;
}
const { DATE, DAY, HOUR, MILLISECOND, MINUTE, MONTH, SECOND, YEAR, UTC_OFFSET } = units;
const ASP_NET_JSON_REGEX = /^\/?Date\((-?\d+)/i;
function ensureType(value, checked) {
  return checked;
}
function parseObject(obj) {
  const array = [];
  Object.entries(obj).forEach(([unit, value]) => {
    unit = normalizeUnit.normalizeUnit(unit);
    switch (unit) {
      case YEAR:
        array[0] = value;
        break;
      case MONTH:
        array[1] = value;
        break;
      case DATE:
      case DAY:
        array[2] = value;
        break;
      case HOUR:
        array[3] = value;
        break;
      case MINUTE:
        array[4] = value;
        break;
      case SECOND:
        array[5] = value;
        break;
      case MILLISECOND:
        array[6] = value;
        break;
      case UTC_OFFSET:
        array[7] = value;
        break;
    }
  });
  if (array.length === 0) {
    return /* @__PURE__ */ new Date();
  }
  return createFromArray(array);
}
function parseString(input, format) {
  const extracted = typeof format === "string" && format ? extractWithFormat(input, format) : autoExtract(input);
  if (Array.isArray(extracted)) {
    return createFromArray(extracted);
  }
  const matched = ASP_NET_JSON_REGEX.exec(input);
  return new Date(matched !== null ? +matched[1] : Date.parse(extracted));
}
function parse(input, format) {
  let ret;
  const whatType = typeof input;
  if (ensureType(input, whatType === "string")) {
    ret = parseString(input, format);
  } else if (Array.isArray(input)) {
    ret = createFromArray(input);
  } else if (input instanceof Date) {
    ret = new Date(input);
  } else if (ensureType(input, whatType === "object" && input !== null)) {
    if (input.isValid && input.isValid()) {
      ret = /* @__PURE__ */ new Date(+input);
    } else {
      ret = parseObject(input);
    }
  } else if (ensureType(input, whatType === "number")) {
    ret = new Date(input);
  } else if (ensureType(input, whatType === "undefined")) {
    ret = format ? /* @__PURE__ */ new Date(NaN) : /* @__PURE__ */ new Date();
  } else {
    ret = new Date(Date.parse(input));
  }
  return ret;
}
module.exports = parse;