/*
 Input Mask plugin extensions
 http://github.com/RobinHerbots/jquery.inputmask
 Copyright (c) Robin Herbots
 Licensed under the MIT license
 */
import Inputmask from "../inputmask";
import keyCode from "../keycode.json";
import escapeRegex from "../escapeRegex";
import {seekNext} from "../positioning";
import {getMaskTemplate} from "../validation-tests";

const $ = Inputmask.dependencyLib;

class DateObject {
    constructor(mask, format, opts) {
        this.mask = mask;
        this.format = format;
        this.opts = opts;
        this._date = new Date(1, 0, 1);
        this.initDateObject(mask, this.opts);
    }

    get date() {
        if (this._date === undefined) {
            this._date = new Date(1, 0, 1);
            this.initDateObject(undefined, this.opts);
        }
        return this._date;
    }

    initDateObject(mask, opts) {
        let match;
        getTokenizer(opts).lastIndex = 0;
        while ((match = getTokenizer(opts).exec(this.format))) {
            let dynMatches = new RegExp("\\d+$").exec(match[0]),
                fcode = dynMatches ? (match[0][0] + "x") : match[0],
                value;
            if (mask !== undefined) {
                if (dynMatches) {
                    let lastIndex = getTokenizer(opts).lastIndex,
                        tokanMatch = getTokenMatch(match.index, opts);
                    getTokenizer(opts).lastIndex = lastIndex;
                    value = mask.slice(0, mask.indexOf(tokanMatch.nextMatch[0]));
                } else {
                    value = mask.slice(0, fcode.length);
                }
                mask = mask.slice(value.length);
            }

            if (Object.prototype.hasOwnProperty.call(formatCode, fcode)) {
                this.setValue(this, value, fcode, formatCode[fcode][2], formatCode[fcode][1]);
            }
        }
    }

    setValue(dateObj, value, fcode, targetProp, dateOperation) {
        if (value !== undefined) {
            dateObj[targetProp] = targetProp === "ampm" ? value : value.replace(/[^0-9]/g, "0");
            dateObj["raw" + targetProp] = value.replace(/\s/g, "_");
        }
        if (dateOperation !== undefined) {
            let datavalue = dateObj[targetProp];
            if ((targetProp === "day" && parseInt(datavalue) === 29) || (targetProp === "month" && parseInt(datavalue) === 2)) {
                if (parseInt(dateObj.day) === 29 && parseInt(dateObj.month) === 2 && (dateObj.year === "" || dateObj.year === undefined)) {
                    //set temporary leap year in dateObj
                    dateObj._date.setFullYear(2012, 1, 29);
                }
            }
            if (targetProp === "day") {
                useDateObject = true;
                if (parseInt(datavalue) === 0)
                    datavalue = 1;
            }
            if (targetProp === "month")
                useDateObject = true;
            if (targetProp === "year") {
                useDateObject = true;
                if (datavalue.length < 4)
                    datavalue = pad(datavalue, 4, true);
            }
            if (datavalue !== "" && !isNaN(datavalue)) dateOperation.call(dateObj._date, datavalue);
            if (targetProp === "ampm")
                dateOperation.call(dateObj._date, datavalue);
        }
    }

    reset() {
        this._date = new Date(1, 0, 1);
    }

    reInit() {
        this._date = undefined;
        this.date;
    }
}

let currentYear = new Date().getFullYear(),
    useDateObject = false,
    //supported codes for formatting
    //http://blog.stevenlevithan.com/archives/date-time-format
    //https://docs.microsoft.com/en-us/dotnet/standard/base-types/custom-date-and-time-format-strings?view=netframework-4.7
    formatCode = { //regex, valueSetter, type, displayformatter
        d: ["[1-9]|[12][0-9]|3[01]", Date.prototype.setDate, "day", Date.prototype.getDate], //Day of the month as digits; no leading zero for single-digit days.
        dd: ["0[1-9]|[12][0-9]|3[01]", Date.prototype.setDate, "day", function () {
            return pad(Date.prototype.getDate.call(this), 2);
        }], //Day of the month as digits; leading zero for single-digit days.
        ddd: [""], //Day of the week as a three-letter abbreviation.
        dddd: [""], //Day of the week as its full name.
        m: ["[1-9]|1[012]", function (val) {
            let mval = val ? parseInt(val) : 0;
            if (mval > 0) mval--;
            return Date.prototype.setMonth.call(this, mval);
        }, "month", function () {
            return Date.prototype.getMonth.call(this) + 1;
        }], //Month as digits; no leading zero for single-digit months.
        mm: ["0[1-9]|1[012]", function (val) {
            let mval = val ? parseInt(val) : 0;
            if (mval > 0) mval--;
            return Date.prototype.setMonth.call(this, mval);
        }, "month", function () {
            return pad(Date.prototype.getMonth.call(this) + 1, 2);
        }], //Month as digits; leading zero for single-digit months.
        mmm: [""], //Month as a three-letter abbreviation.
        mmmm: [""], //Month as its full name.
        yy: ["[0-9]{2}", Date.prototype.setFullYear, "year", function () {
            return pad(Date.prototype.getFullYear.call(this), 2);
        }], //Year as last two digits; leading zero for years less than 10.
        yyyy: ["[0-9]{4}", Date.prototype.setFullYear, "year", function () {
            return pad(Date.prototype.getFullYear.call(this), 4);
        }],
        h: ["[1-9]|1[0-2]", Date.prototype.setHours, "hours", Date.prototype.getHours], //Hours; no leading zero for single-digit hours (12-hour clock).
        hh: ["0[1-9]|1[0-2]", Date.prototype.setHours, "hours", function () {
            return pad(Date.prototype.getHours.call(this), 2);
        }], //Hours; leading zero for single-digit hours (12-hour clock).
        hx: [function (x) {
            return `[0-9]{${x}}`;
        }, Date.prototype.setHours, "hours", function (x) {
            return Date.prototype.getHours;
        }], //Hours; no limit; set maximum digits
        H: ["1?[0-9]|2[0-3]", Date.prototype.setHours, "hours", Date.prototype.getHours], //Hours; no leading zero for single-digit hours (24-hour clock).
        HH: ["0[0-9]|1[0-9]|2[0-3]", Date.prototype.setHours, "hours", function () {
            return pad(Date.prototype.getHours.call(this), 2);
        }], //Hours; leading zero for single-digit hours (24-hour clock).
        Hx: [function (x) {
            return `[0-9]{${x}}`;
        }, Date.prototype.setHours, "hours", function (x) {
            return function () {
                return pad(Date.prototype.getHours.call(this), x);
            };
        }], //Hours; no limit; set maximum digits
        M: ["[1-5]?[0-9]", Date.prototype.setMinutes, "minutes", Date.prototype.getMinutes], //Minutes; no leading zero for single-digit minutes. Uppercase M unlike CF timeFormat's m to avoid conflict with months.
        MM: ["0[0-9]|1[0-9]|2[0-9]|3[0-9]|4[0-9]|5[0-9]", Date.prototype.setMinutes, "minutes", function () {
            return pad(Date.prototype.getMinutes.call(this), 2);
        }], //Minutes; leading zero for single-digit minutes. Uppercase MM unlike CF timeFormat's mm to avoid conflict with months.
        s: ["[1-5]?[0-9]", Date.prototype.setSeconds, "seconds", Date.prototype.getSeconds], //Seconds; no leading zero for single-digit seconds.
        ss: ["0[0-9]|1[0-9]|2[0-9]|3[0-9]|4[0-9]|5[0-9]", Date.prototype.setSeconds, "seconds", function () {
            return pad(Date.prototype.getSeconds.call(this), 2);
        }], //Seconds; leading zero for single-digit seconds.
        l: ["[0-9]{3}", Date.prototype.setMilliseconds, "milliseconds", function () {
            return pad(Date.prototype.getMilliseconds.call(this), 3);
        }], //Milliseconds. 3 digits.
        L: ["[0-9]{2}", Date.prototype.setMilliseconds, "milliseconds", function () {
            return pad(Date.prototype.getMilliseconds.call(this), 2);
        }], //Milliseconds. 2 digits.
        t: ["[ap]", setAMPM, "ampm", getAMPM, 1], //Lowercase, single-character time marker string: a or p.
        tt: ["[ap]m", setAMPM, "ampm", getAMPM, 2], //two-character time marker string: am or pm.
        T: ["[AP]", setAMPM, "ampm", getAMPM, 1], //single-character time marker string: A or P.
        TT: ["[AP]M", setAMPM, "ampm", getAMPM, 2], //two-character time marker string: AM or PM.
        Z: [".*", undefined, "Z", getTimeZoneAbbreviated], //US timezone abbreviation, e.g. EST or MDT. With non-US timezones or in the Opera browser, the GMT/UTC offset is returned, e.g. GMT-0500
        o: [""], //GMT/UTC timezone offset, e.g. -0500 or +0230.
        S: [""] //The date's ordinal suffix (st, nd, rd, or th).
    },
    formatAlias = {
        isoDate: "yyyy-mm-dd", //2007-06-09
        isoTime: "HH:MM:ss", //17:46:21
        isoDateTime: "yyyy-mm-dd'T'HH:MM:ss", //2007-06-09T17:46:21
        isoUtcDateTime: "UTC:yyyy-mm-dd'T'HH:MM:ss'Z'" //2007-06-09T22:46:21Z
    };

function setAMPM(value) {
    const hours = this.getHours();
    if (value.toLowerCase().includes("p")) {
        this.setHours(hours + 12);
        // console.log("setAMPM + 12");
    } else if (value.toLowerCase().includes("a") && hours >= 12) {
        this.setHours(hours - 12);
    }
}

function getAMPM() {
    let date = this,
        hours = date.getHours();
    hours = hours || 12;
    return hours >= 12 ? "PM" : "AM";
}

function getTimeZoneAbbreviated() {
    //not perfect, but ok for now
    let date = this, {1: tz} = date.toString().match(/\((.+)\)/);
    if (tz.includes(" ")) {
        tz = tz.replace("-", " ").toUpperCase();
        tz = tz.split(" ").map(([first]) => first).join("");
    }
    return tz;
}

function formatcode(match) {
    var dynMatches = new RegExp("\\d+$").exec(match[0]);
    if (dynMatches && dynMatches[0] !== undefined) {
        var fcode = formatCode[match[0][0] + "x"].slice("");
        fcode[0] = fcode[0](dynMatches[0]);
        fcode[3] = fcode[3](dynMatches[0]);

        return fcode;
    } else if (formatCode[match[0]]) {
        return formatCode[match[0]];
    }
}

function getTokenizer(opts) {
    if (!opts.tokenizer) {
        var tokens = [], dyntokens = [];
        for (var ndx in formatCode) {
            if (/\.*x$/.test(ndx)) {
                var dynToken = ndx[0] + "\\d+";
                if (dyntokens.indexOf(dynToken) === -1) {
                    dyntokens.push(dynToken);
                }
            } else if (tokens.indexOf(ndx[0]) === -1) {
                tokens.push(ndx[0]);
            }
        }
        opts.tokenizer = "(" + (dyntokens.length > 0 ? dyntokens.join("|") + "|" : "") + tokens.join("+|") + ")+?|.";
        opts.tokenizer = new RegExp(opts.tokenizer, "g");
    }

    return opts.tokenizer;
}

function prefillYear(dateParts, currentResult, opts) {
    if (dateParts.year !== dateParts.rawyear) {
        var crrntyear = currentYear.toString(),
            enteredPart = dateParts.rawyear.replace(/[^0-9]/g, ""),
            currentYearPart = crrntyear.slice(0, enteredPart.length),
            currentYearNextPart = crrntyear.slice(enteredPart.length);
        if (enteredPart.length === 2 && enteredPart === currentYearPart) {
            const entryCurrentYear = new Date(currentYear, dateParts.month - 1, dateParts.day);
            if (dateParts.day == entryCurrentYear.getDate() && (!opts.max || opts.max.date.getTime() >= entryCurrentYear.getTime())) {
                //update dateParts
                dateParts.date.setFullYear(currentYear);
                dateParts.year = crrntyear;
                //update result
                currentResult.insert = [{
                    pos: currentResult.pos + 1,
                    c: currentYearNextPart[0]
                }, {
                    pos: currentResult.pos + 2,
                    c: currentYearNextPart[1]
                }];
            }
        }
    }

    return currentResult;
}

function isValidDate(dateParts, currentResult, opts) {
    if (!useDateObject) return true;
    if (dateParts.rawday === undefined
        || (!isFinite(dateParts.rawday) && new Date(dateParts.date.getFullYear(), isFinite(dateParts.rawmonth) ? dateParts.month : dateParts.date.getMonth() + 1, 0).getDate() >= dateParts.day)
        || (dateParts.day == "29" && (!isFinite(dateParts.rawyear) || dateParts.rawyear === undefined || dateParts.rawyear === ""))
        || new Date(dateParts.date.getFullYear(), isFinite(dateParts.rawmonth) ? dateParts.month : dateParts.date.getMonth() + 1, 0).getDate() >= dateParts.day) {
        return currentResult;
    } else { //take corrective action if possible
        if (dateParts.day == "29") {
            var tokenMatch = getTokenMatch(currentResult.pos, opts);
            if (tokenMatch.targetMatch[0] === "yyyy" && currentResult.pos - tokenMatch.targetMatchIndex === 2) {
                currentResult.remove = currentResult.pos + 1;
                return currentResult;
            }
        } else if (dateParts.month == "02" && dateParts.day == "30" && currentResult.c !== undefined) {
            dateParts.day = "03";
            dateParts.date.setDate(3);
            dateParts.date.setMonth(1);
            currentResult.insert = [{pos: currentResult.pos, c: "0"}, {pos: currentResult.pos + 1, c: currentResult.c}];
            currentResult.caret = seekNext.call(this, currentResult.pos + 1);
            return currentResult;
        }
        return false;
    }
}

function isDateInRange(dateParts, result, opts, maskset, fromCheckval) {
    if (!result) return result;
    if (result && opts.min) {
        if (/*useDateObject && (dateParts["year"] === undefined || dateParts["yearSet"]) && */opts.min.date.getTime() === opts.min.date.getTime()) {
            let match;
            dateParts.reset();
            getTokenizer(opts).lastIndex = 0;
            while ((match = getTokenizer(opts).exec(opts.inputFormat))) {
                var fcode;
                if ((fcode = formatcode(match))) {
                    if (fcode[3]) {
                        var setFn = fcode[1];
                        var current = dateParts[fcode[2]],
                            minVal = opts.min[fcode[2]],
                            maxVal = opts.max ? opts.max[fcode[2]] : minVal,
                            curVal = [];

                        let forceCurrentValue = false;
                        for (let i = 0; i < minVal.length; i++) {
                            if (maskset.validPositions[i + match.index] === undefined && !forceCurrentValue) {
                                curVal[i] = minVal[i];
                                // ADD +1 to whoile
                                if (fcode[2] === "year" && current.length - 1 == i && minVal != maxVal)
                                    curVal = (parseInt(curVal.join("")) + 1).toString().split("");
                                if (fcode[2] === "ampm" && minVal != maxVal && opts.min.date.getTime() > dateParts.date.getTime())
                                    curVal[i] = maxVal[i];
                            } else {
                                curVal[i] = current[i];
                                forceCurrentValue = forceCurrentValue || current[i] > minVal[i];
                            }
                        }

                        setFn.call(dateParts._date, curVal.join(""));
                    }
                }
            }

            result = opts.min.date.getTime() <= dateParts.date.getTime();
            dateParts.reInit();
        }
    }

    if (result && opts.max) {
        if (opts.max.date.getTime() === opts.max.date.getTime()) {
            result = opts.max.date.getTime() >= dateParts.date.getTime();
        }
    }
    return result;
}

//parse the given format and return a mask pattern
//when a dateObjValue is passed a datestring in the requested format is returned
function parse(format, dateObjValue, opts, raw) {
    //parse format to regex string
    var mask = "", match, fcode;
    getTokenizer(opts).lastIndex = 0;
    while ((match = getTokenizer(opts).exec(format))) {
        if (dateObjValue === undefined) {
            if ((fcode = formatcode(match))) {
                mask += "(" + fcode[0] + ")";
            } else {
                switch (match[0]) {
                    case "[":
                        mask += "(";
                        break;
                    case "]":
                        mask += ")?";
                        break;
                    default:
                        mask += escapeRegex(match[0]);
                }
            }
        } else {
            if ((fcode = formatcode(match))) {
                if (raw !== true && fcode[3]) {
                    var getFn = fcode[3];
                    mask += getFn.call(dateObjValue.date);
                } else if (fcode[2]) {
                    mask += dateObjValue["raw" + fcode[2]];
                } else {
                    mask += match[0];
                }
            } else {
                mask += match[0];
            }
        }
    }
    return mask;
}

//padding function
function pad(val, len, right) {
    val = String(val);
    len = len || 2;
    while (val.length < len) val = right ? val + "0" : "0" + val;
    return val;
}

function analyseMask(mask, format, opts) {
    if (typeof mask === "string") {
        return new DateObject(mask, format, opts);
    } else if (mask && typeof mask === "object" && Object.prototype.hasOwnProperty.call(mask, "date")) {
        return mask;
    }
    return undefined;
}

function importDate(dateObj, opts) {
    return parse(opts.inputFormat, {date: dateObj}, opts);
}

function getTokenMatch(pos, opts) {
    var calcPos = 0, targetMatch, match, matchLength = 0;
    getTokenizer(opts).lastIndex = 0;
    while ((match = getTokenizer(opts).exec(opts.inputFormat))) {
        var dynMatches = new RegExp("\\d+$").exec(match[0]);
        matchLength = dynMatches ? parseInt(dynMatches[0]) : match[0].length;
        calcPos += matchLength;
        if (calcPos >= pos + 1) {
            targetMatch = match;
            match = getTokenizer(opts).exec(opts.inputFormat);
            break;
        }
    }
    return {
        targetMatchIndex: calcPos - matchLength,
        nextMatch: match,
        targetMatch: targetMatch
    };
}


Inputmask.extendAliases({
    "datetime": {
        mask: function (opts) {
            //do not allow numeric input in datetime alias
            opts.numericInput = false;

            //localize
            formatCode.S = opts.i18n.ordinalSuffix.join("|");

            opts.inputFormat = formatAlias[opts.inputFormat] || opts.inputFormat; //resolve possible formatAlias
            opts.displayFormat = formatAlias[opts.displayFormat] || opts.displayFormat || opts.inputFormat; //resolve possible formatAlias
            opts.outputFormat = formatAlias[opts.outputFormat] || opts.outputFormat || opts.inputFormat; //resolve possible formatAlias
            opts.placeholder = opts.placeholder !== "" ? opts.placeholder : opts.inputFormat.replace(/[[\]]/, "");
            opts.regex = parse(opts.inputFormat, undefined, opts);
            opts.min = analyseMask(opts.min, opts.inputFormat, opts);
            opts.max = analyseMask(opts.max, opts.inputFormat, opts);
            return null; //migrate to regex mask
        },
        placeholder: "", //set default as none (~ auto); when a custom placeholder is passed it will be used
        inputFormat: "isoDateTime", //format used to input the date
        displayFormat: null, //visual format when the input looses focus
        outputFormat: null, //unmasking format
        min: null, //needs to be in the same format as the inputfornat
        max: null, //needs to be in the same format as the inputfornat,
        skipOptionalPartCharacter: "",
        // Internationalization strings
        i18n: {
            dayNames: [
                "Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun",
                "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday", "Sunday"
            ],
            monthNames: [
                "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec",
                "January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"
            ],
            ordinalSuffix: ["st", "nd", "rd", "th"]
        },
        preValidation: function (buffer, pos, c, isSelection, opts, maskset, caretPos, strict) {
            if (strict) return true;
            if (isNaN(c) && buffer[pos] !== c) {
                var tokenMatch = getTokenMatch(pos, opts);
                if (tokenMatch.nextMatch && tokenMatch.nextMatch[0] === c && tokenMatch.targetMatch[0].length > 1) {
                    var validator = formatCode[tokenMatch.targetMatch[0]][0];
                    if (new RegExp(validator).test("0" + buffer[pos - 1])) {
                        buffer[pos] = buffer[pos - 1];
                        buffer[pos - 1] = "0";
                        return {
                            fuzzy: true,
                            buffer: buffer,
                            refreshFromBuffer: {start: pos - 1, end: pos + 1},
                            pos: pos + 1
                        };
                    }
                }
            }
            return true;
        },
        postValidation: function (buffer, pos, c, currentResult, opts, maskset, strict, fromCheckval) {
            const inputmask = this;

            if (strict) return true;
            var tokenMatch, validator;
            if (currentResult === false) { //try some shifting
                tokenMatch = getTokenMatch(pos + 1, opts);
                if (tokenMatch.targetMatch && tokenMatch.targetMatchIndex === pos && tokenMatch.targetMatch[0].length > 1 && formatCode[tokenMatch.targetMatch[0]] !== undefined) {
                    validator = formatCode[tokenMatch.targetMatch[0]][0];
                } else {
                    tokenMatch = getTokenMatch(pos + 2, opts);
                    if (tokenMatch.targetMatch && tokenMatch.targetMatchIndex === pos + 1 && tokenMatch.targetMatch[0].length > 1 && formatCode[tokenMatch.targetMatch[0]] !== undefined) {
                        validator = formatCode[tokenMatch.targetMatch[0]][0];
                    }
                }
                if (validator !== undefined) {
                    if (maskset.validPositions[pos + 1] !== undefined && new RegExp(validator).test(c + "0")) {
                        buffer[pos] = c;
                        buffer[pos + 1] = "0";
                        currentResult = {
                            //insert: [{pos: pos, c: "0"}, {pos: pos + 1, c: c}],
                            pos: pos + 2, //this will triggeer a refreshfrombuffer
                            caret: pos
                        };
                    } else if (new RegExp(validator).test("0" + c)) {
                        buffer[pos] = "0";
                        buffer[pos + 1] = c;
                        currentResult = {
                            //insert: [{pos: pos, c: "0"}, {pos: pos + 1, c: c}],
                            pos: pos + 2 //this will triggeer a refreshfrombuffer
                        };
                    }
                }

                if (currentResult === false) return currentResult;
            }

            if (currentResult.fuzzy) {
                buffer = currentResult.buffer;
                pos = currentResult.pos;
            }

            //full validate target
            tokenMatch = getTokenMatch(pos, opts);
            if (tokenMatch.targetMatch && tokenMatch.targetMatch[0] && formatCode[tokenMatch.targetMatch[0]] !== undefined) {
                let fcode = formatCode[tokenMatch.targetMatch[0]];
                validator = fcode[0];
                var part = buffer.slice(tokenMatch.targetMatchIndex, tokenMatch.targetMatchIndex + tokenMatch.targetMatch[0].length);
                if (new RegExp(validator).test(part.join("")) === false && tokenMatch.targetMatch[0].length === 2 && maskset.validPositions[tokenMatch.targetMatchIndex] && maskset.validPositions[tokenMatch.targetMatchIndex + 1]) {
                    maskset.validPositions[tokenMatch.targetMatchIndex + 1].input = "0";
                }
                if (fcode[2] == "year") {
                    var _buffer = getMaskTemplate.call(inputmask, false, 1, undefined, true);
                    for (let i = pos + 1; i < buffer.length; i++) {
                        buffer[i] = _buffer[i];
                        delete maskset.validPositions[i];
                    }
                }
            }

            var result = currentResult, dateParts = analyseMask(buffer.join(""), opts.inputFormat, opts);
            if (result && dateParts.date.getTime() === dateParts.date.getTime()) { //check for a valid date ~ an invalid date returns NaN which isn't equal
                if (opts.prefillYear) result = prefillYear(dateParts, result, opts);
                result = isValidDate.call(inputmask, dateParts, result, opts);
                result = isDateInRange(dateParts, result, opts, maskset, fromCheckval);
            }

            if (pos !== undefined && result && currentResult.pos !== pos) {
                return {
                    buffer: parse(opts.inputFormat, dateParts, opts).split(""),
                    refreshFromBuffer: {start: pos, end: currentResult.pos},
                    pos: currentResult.caret || currentResult.pos //correct caret position
                };
            }

            return result;
        },
        onKeyDown: function (e, buffer, caretPos, opts) {
            var input = this;
            if (e.ctrlKey && e.keyCode === keyCode.RIGHT) {
                input.inputmask._valueSet(importDate(new Date(), opts));
                $(input).trigger("setvalue");
            }
        },
        onUnMask: function (maskedValue, unmaskedValue, opts) {
            return unmaskedValue ? parse(opts.outputFormat, analyseMask(maskedValue, opts.inputFormat, opts), opts, true) : unmaskedValue;
        },
        casing: function (elem, test, pos, validPositions) {
            if (test.nativeDef.indexOf("[ap]") == 0) return elem.toLowerCase();
            if (test.nativeDef.indexOf("[AP]") == 0) return elem.toUpperCase();
            return elem;
        },
        onBeforeMask: function (initialValue, opts) {
            if (Object.prototype.toString.call(initialValue) === "[object Date]") {
                initialValue = importDate(initialValue, opts);
            }

            return initialValue;
        },
        insertMode: false,
        shiftPositions: false,
        keepStatic: false,
        inputmode: "numeric",
        prefillYear: true //Allows to disable prefill for datetime year.
    }
});
