/*
 * index.js
 * Copyright (C) 2016 thegrumpydictator@gmail.com
 *
 * This software may be modified and distributed under the terms of the
 * Creative Commons Attribution-ShareAlike 4.0 International License.
 *
 * See the LICENSE file for details.
 */

/** global: minDate */

$(function () {
    "use strict";

    if ($('#inputDateRange').length > 0) {

        $('#inputDateRange').daterangepicker(
            {
                locale: {
                    format: 'YYYY-MM-DD',
                    firstDay: 1,
                },
                minDate: minDate,
                drops: 'up',
            }
        );

        // set values from cookies, if any:
        if (!(readCookie('report-type') === null)) {
            $('select[name="report_type"]').val(readCookie('report-type'));
        }

        if ((readCookie('report-accounts') !== null)) {
            var arr = readCookie('report-accounts').split(',');
            arr.forEach(function (val) {
                $('input[class="account-checkbox"][type="checkbox"][value="' + val + '"]').prop('checked', true);
            });
        }

        // set date:
        var startStr = readCookie('report-start');
        var endStr = readCookie('report-end');
        if (startStr !== null && endStr !== null && startStr.length == 8 && endStr.length == 8) {
            var startDate = moment(startStr, "YYYY-MM-DD");
            var endDate = moment(endStr, "YYYY-MM-DD");
            var datePicker = $('#inputDateRange').data('daterangepicker');
            datePicker.setStartDate(startDate);
            datePicker.setEndDate(endDate);
        }
    }

    $('.date-select').on('click', preSelectDate);
    $('#report-form').on('submit', catchSubmit);
    $('select[name="report_type"]').on('change', getReportOptions);
    getReportOptions();

});

function getReportOptions() {
    "use strict";
    var reportType = $('select[name="report_type"]').val();
    $('#extra-options').empty();
    $('#extra-options').addClass('loading');

    $.getJSON('reports/options/' + reportType, function (data) {
        $('#extra-options').removeClass('loading').html(data.html);
        setOptionalFromCookies();
    }).fail(function () {
        $('#extra-options').removeClass('loading').addClass('error');
    });
}

function setOptionalFromCookies() {
    var arr;
    // categories
    if ((readCookie('report-categories') !== null)) {
        arr = readCookie('report-categories').split(',');
        arr.forEach(function (val) {
            $('input[class="category-checkbox"][type="checkbox"][value="' + val + '"]').prop('checked', true);
        });
    }

    // and budgets!
    if ((readCookie('report-budgets') !== null)) {
        arr = readCookie('report-budgets').split(',');
        arr.forEach(function (val) {
            $('input[class="budget-checkbox"][type="checkbox"][value="' + val + '"]').prop('checked', true);
        });
    }
}

function catchSubmit() {
    "use strict";
    // date, processed:
    var picker = $('#inputDateRange').data('daterangepicker');

    // all account ids:
    var count = 0;
    var accounts = [];
    $.each($('.account-checkbox'), function (i, v) {
        var c = $(v);
        if (c.prop('checked')) {
            accounts.push(c.val());
            count++;
        }
    });

    // all category ids:
    var categories = [];
    $.each($('.category-checkbox'), function (i, v) {
        var c = $(v);
        if (c.prop('checked')) {
            categories.push(c.val());
        }
    });

    // all budget ids:
    var budgets = [];
    $.each($('.budget-checkbox'), function (i, v) {
        var c = $(v);
        if (c.prop('checked')) {
            budgets.push(c.val());
        }
    });


    // remember all
    if (count > 0) {
        // set cookie to remember choices.
        createCookie('report-type', $('select[name="report_type"]').val(), 365);
        createCookie('report-accounts', accounts, 365);
        createCookie('report-categories', categories, 365);
        createCookie('report-budgets', budgets, 365);
        createCookie('report-start', moment(picker.startDate).format("YYYYMMDD"), 365);
        createCookie('report-end', moment(picker.endDate).format("YYYYMMDD"), 365);
    }

    return true;
}

function preSelectDate(e) {
    "use strict";
    var link = $(e.target);
    var picker = $('#inputDateRange').data('daterangepicker');
    picker.setStartDate(moment(link.data('start'), "YYYY-MM-DD"));
    picker.setEndDate(moment(link.data('end'), "YYYY-MM-DD"));
    return false;

}


function createCookie(name, value, days) {
    "use strict";
    var expires;

    if (days) {
        var date = new Date();
        date.setTime(date.getTime() + (days * 24 * 60 * 60 * 1000));
        expires = "; expires=" + date.toGMTString();
    } else {
        expires = "";
    }
    document.cookie = encodeURIComponent(name) + "=" + encodeURIComponent(value) + expires + "; path=/";
}

function readCookie(name) {
    "use strict";
    var nameEQ = encodeURIComponent(name) + "=";
    var ca = document.cookie.split(';');
    for (var i = 0; i < ca.length; i++) {
        var c = ca[i];
        while (c.charAt(0) === ' ') {
            c = c.substring(1, c.length);
        }
        if (c.indexOf(nameEQ) === 0) {
            return decodeURIComponent(c.substring(nameEQ.length, c.length));
        }
    }
    return null;
}