/**
 * 高级检索
 */

$(document).ready(function () {
    $('#sort-ul li:lt(6)').show();
    $('#journal-ul li:lt(9)').show();

    /**
     * 展开期刊分类
     */
    $('.show-more-sort').click(function () {
        var cls = $(this).prop('class');
        if (cls == 'show-more-sort') {
            $('#sort-ul li').show();
            $('.more-sort-txt').text('Fold ');
            $('.more-sort-open').css('transform', 'rotate(0deg)');
            $(this).prop('class', 'hide-more-sort');
        } else {
            $('#sort-ul li:gt(5)').hide();
            $('.more-sort-txt').text('Expand ');
            $('.more-sort-open').css('transform', 'rotate(-90deg)');
            $(this).prop('class', 'show-more-sort');
        }
    });

    /**
     * 展开期刊
     */
    $('.show-more-journal').click(function () {
        var cls = $(this).prop('class');
        if (cls == 'show-more-journal') {
            $('#journal-ul li').show();
            $('.more-journal-txt').text('Fold ');
            $('.more-journal-open').css('transform', 'rotate(0deg)');
            $(this).prop('class', 'hide-more-journal');
        } else {
            $('#journal-ul li:gt(8)').hide();
            $('.more-journal-txt').text('Expand ');
            $('.more-journal-open').css('transform', 'rotate(-90deg)');
            $(this).prop('class', 'show-more-journal');
        }
    });

    /**
     * 检索文章
     */
    $('#btn-search').click(function () {
        var searchSql = $('#text-sql').html();

        // 1.获取 journalIds
        var journalIds = '';
        var scope = $('#journal-scope').val();
        if (scope > 0) {
            if ($('input[name="journalId"]:checked').length == 0) {
                alert('Please select a journal!');
                return false;
            }
            $('input[name="journalId"]:checked').each(function () {
                journalIds += $(this).val() + 'J';
            });
        } else {
            journalIds = $('#current-jid').val();
        }
        searchSql = '(' + searchSql + ' AND ' + journalIds + '[Journal])';

        // 2.年, 卷, 期, 起始页, doi
        var year = $('#year').val();
        if (year.trim() != '') {
            var regYear = new RegExp('^[1-9][0-9]{3}$');
            if (!regYear.test(year)) {
                alert('Year input error!');
                $('#year').focus();
                return false;
            }
            searchSql = '(' + searchSql + ' AND ' + year + '[Year])';
        }
        var volumn = $('#volumn').val();
        if (volumn.trim() != '') {
            var regVolumn = new RegExp('^([a-zA-Z0-9])+$');
            if (!regVolumn.test(volumn)) {
                alert('volumn input error!');
                $('#volumn').focus();
                return false;
            }
            searchSql = '(' + searchSql + ' AND ' + volumn + '[volumn])';
        }
        var issue = $('#issue').val();
        if (issue.trim() != '') {
            var regIssue = new RegExp('^([a-zA-Z0-9])+$');
            if (!regIssue.test(issue)) {
                alert('issue input error!');
                $('#issue').focus();
                return false;
            }
            searchSql = '(' + searchSql + ' AND ' + issue + '[issue])';
        }
        var startP = $('#startP').val();
        if (startP.trim() != '') {
            var regStartP = new RegExp('^[0-9]{1,}$');
            if (!regStartP.test(startP)) {
                alert('Start page input error!');
                $('#startP').focus();
                return false;
            }
            searchSql = '(' + searchSql + ' AND ' + startP + '[startP])';
        }
        var doi = $('#doi').val();
        if (doi.trim() != '') {
            searchSql = '(' + searchSql + ' AND ' + doi + '[DOI])';
        }

        // 3.专题, 
        var subject = $('#subject').val();
        if (subject) {
	        if (subject != '0') {
	            searchSql = '(' + searchSql + ' AND ' + subject + '[SubjectArticle])';
	        }
        }
        
        //栏目
        var channel = $('#channel').val();
        if (channel) {
            if (channel != '0') {
                searchSql = '(' + searchSql + ' AND ' + channel + '[Channel])';
            }
        }

        // 4.字段组合
        // joinField();

        // 5.出版年, 每页显示, 排序方式
        var startYear = $('#startYear').val();
        if (startYear.trim() != '') {
            searchSql = '(' + searchSql + ' AND ' + startYear + '[FromYear])';
        }
        var endYear = $('#endYear').val();
        if (endYear.trim() != '') {
            searchSql = '(' + searchSql + ' AND ' + endYear + '[ToYear])';
        }

        var pageSize = $('#page-size').val();
        if (pageSize.trim() != '') {
            var regSize = new RegExp('^[1-9][0-9]{0,4}$');
            if (!regSize.test(pageSize)) {
                alert('Page input error!');
                $('#page-size').focus();
                return false;
            }
            searchSql = '((' + searchSql + ' AND ' + pageSize + '[PageSize])';
        }
        var sort = $('input[name="sort"]:checked').val();
        searchSql = '(' + searchSql + ' AND ' + sort + '[Order])';
        $('#text-sql').html(searchSql);
        $('#inp-sql').val(searchSql);
        $('#search-form').submit();
    });
});

/***************************************************************************************************************************
 ****** 上面 jquery, 下面 javascript ******
 ***************************************************************************************************************************/

/**
 * 动态加载指定专题
 * @returns {boolean}
 */
function changeSubject() {
    var scope = $('#journal-scope').val();
    if (scope > 0) {
        var journalIds = '';
        $('input[name="journalId"]:checked').each(function () {
            journalIds += $(this).val() + ',';
        });
        journalIds = journalIds.substring(0, journalIds.length - 1);
        $.ajax({
            url: 'changeSubject.do',
            data: {
                journalIds: journalIds
            },
            type: 'post',
            dataType: 'json',
            success: function (data) {
                $('#subject option:not(:first)').remove();
                if (data != null) {
                    $.each(data, function (i, item) {
                        $('#subject').append('<option value="' + item['zhuanTiId'] + '">' + item['zhuanTiMingCheng_en'] + '</option>');
                    });
                }
            },
            error: function () {
                alert('Exception');
            }
        });
    }
}

/**
 * 期刊 change 事件
 * @param obj
 */
function changeJournal(obj) {
    $.ajax({
        url: 'changeJournal.do',
        data: {
            journalId: obj.value
        },
        type: 'post',
        dataType: 'json',
        success: function (res) {
            if (res != null) {
                var journalSortId = '';
                var boxLen = 0;
                $.each(res, function (i, item) {
                    if (journalSortId == '') {
                        journalSortId = item['journalSortId'];
                    }
                    var jbox = $('input[name="journalId"][value="' + item['journalId'] + '"]:checked').length;
                    boxLen += jbox;
                });
                if (boxLen == 0) {
                    $('input[name="journalSortId"][value="' + journalSortId + '"]').removeProp('indeterminate');
                    $('input[name="journalSortId"][value="' + journalSortId + '"]').removeProp('checked');
                } else if (res.length != boxLen) {
                    $('input[name="journalSortId"][value="' + journalSortId + '"]').removeProp('checked');
                    $('input[name="journalSortId"][value="' + journalSortId + '"]').prop('indeterminate', true);
                } else if (res.length == boxLen) {
                    $('input[name="journalSortId"][value="' + journalSortId + '"]').removeProp('indeterminate');
                    $('input[name="journalSortId"][value="' + journalSortId + '"]').prop('checked', true);
                }

                $('.show-more-sort').prop('class', 'hide-more-sort');
                $('.more-sort-txt').text('Fold ');
                $('#sort-ul li').show();

                changeSubject();
            }
        },
        error: function () {
            alert('Exception');
        }
    });
}

/**
 * 期刊分类 change 事件
 * @returns {boolean}
 */
function changeJournalSort() {
    // 1.获取全选状态期刊分类 ids
    var checkedJournalSortIds = '';
    $('input[name="journalSortId"]:checked').each(function () {
        checkedJournalSortIds += $(this).val() + ',';
    });
    checkedJournalSortIds = checkedJournalSortIds.substring(0, checkedJournalSortIds.length - 1);

    // 2.获取半选状态期刊分类 ids
    var indeterminateJournalSortIds = '';
    $('input[name="journalSortId"]:indeterminate').each(function () {
        indeterminateJournalSortIds += $(this).val() + ',';
    });
    indeterminateJournalSortIds = indeterminateJournalSortIds.substring(0, indeterminateJournalSortIds.length - 1);
    var journalIds = '';
    if (indeterminateJournalSortIds) {
        $('input[name="journalId"]:checked').each(function () {
            journalIds += $(this).val() + ',';
        });
        journalIds = journalIds.substring(0, journalIds.length - 1);
    }

    if (!checkedJournalSortIds && !indeterminateJournalSortIds) {
        $('input[name="journalId"]').removeProp('checked');
        return false;
    }

    $.ajax({
        url: 'changeJournalSort.do',
        data: {
            checkedJournalSortIds: checkedJournalSortIds,
            indeterminateJournalSortIds: indeterminateJournalSortIds,
            journalIds: journalIds
        },
        type: 'post',
        dataType: 'json',
        success: function (data) {
            if (data != null) {
                $('#journal-ul').html('');
                $.each(data, function (i, item) {
                    if (item['check'] == 't') {
                        $('#journal-ul').append('<li style="display: none;"><label><input type="checkbox" name="journalId" value="' + item['journalId'] + '" onclick="changeJournal(this)" checked />' + item['journalEName'] + '</label></li>');
                    } else {
                        $('#journal-ul').append('<li style="display: none;"><label><input type="checkbox" name="journalId" value="' + item['journalId'] + '" onclick="changeJournal(this)" />' + item['journalEName'] + '</label></li>');
                    }
                });
                $('.show-more-journal').prop('class', 'hide-more-journal');
                $('.more-journal-txt').text('Fold ');
                $('#journal-ul li').show();

                changeSubject();
            }
        }
    });
}

/**
 * 全选
 * @param type
 */
function selectAll(type) {
    if (type == 'sort') {
        $('input[name="journalSortId"]').removeProp('indeterminate');
        $('input[name="journalSortId"]').prop('checked', true);
        $('input[name="journalId"]').prop('checked', true);
    }
    if (type == 'journal') {
        $('input[name="journalSortId"]').removeProp('indeterminate');
        $('input[name="journalId"]').prop('checked', true);
        $('input[name="journalSortId"]').prop('checked', true);
    }

    changeSubject();
}

/**
 * 全不选
 * @param type
 */
function cancelAll(type) {
    if (type == 'sort') {
        $('input[name="journalSortId"]').removeProp('indeterminate');
        $('input[name="journalSortId"]').removeProp('checked');
        $('input[name="journalId"]').removeProp('checked');
    }
    if (type == 'journal') {
        $('input[name="journalSortId"]').removeProp('indeterminate');
        $('input[name="journalId"]').removeProp('checked');
        $('input[name="journalSortId"]').removeProp('checked');
    }

    changeSubject();
}

/**
 * 字段组合
 */
function joinField() {
    // 获取字段组合最外层 table 容器
    var fieldContainer = document.getElementById('field-container');
    // 获取 table 容器里边所有 tr, 并遍历
    var rows = fieldContainer.getElementsByTagName('tr');
    var searchSql = '';
    for (var r = 0; r < rows.length; r++) {
        // 获取每个 tr 的 id 属性
        var trId = rows[r].id;
        trId = trId.replace('fields', '');
        // value
        var value = document.getElementById('value' + trId).value;
        if (value.trim() != '') {
            // key
            var key = document.getElementById('key' + trId).value;
            if (trId == 1) {
                // 文题, 摘要, 关键词
                if (key == 'tit-abs-key') {
                    searchSql = '(((' + value + '[Title]) OR ' + value +  '[Abstract]) OR ' + value + '[Keyword])';
                } else {
                    // 其它
                    searchSql = '(' + value + '[' + key + '])';
                }
            }
            if (trId > 1) {
                var logic = document.getElementById('logic' + trId).value;
                // logic
                if (key == 'tit-abs-key') {
                    searchSql = '(((' + searchSql + ' ' + logic + ' ' + value + '[Title] OR) + ' + value + '[Abstract]) OR ' + value + '[Keyword])';
                } else {
                    searchSql = '(' + searchSql + ' ' + logic + ' ' + value + '[' + key + '])';
                }
            }
        }
    }
    document.getElementById('text-sql').innerHTML = searchSql;
}

/**
 * 添加字段组合
 */
var id = 2;
function addFieldItem() {
    $('#field-first').attr('class', 'field-first');
    $('.joint-field').append('<tr id="fields' + id + '"><td class="td-left">&nbsp;</td><td class="td-right"><select name="logic" id="logic' + id + '" onchange="joinField();"><option value="AND">AND</option><option value="OR">OR</option><option value="NOT">NOT</option></select>&nbsp;<select name="key" id="key' + id + '" onchange="joinField();"><option value="tit-abs-key">Title, abstract, key word</option><option value="Title">Title</option><option value="Abstract">Abstract</option><option value="Keyword">Key word</option><option value="Author">Author</option><option value="AuthorCompany">Affiliation</option><option value="Words">Field code</option><option value="FundSupport">Fund</option></select>&nbsp;<input type="text" id="value' + id + '" onkeyup="joinField();" />&nbsp;<img class="btn" src="../../images/icon/icon-remove.gif" onclick="removeFieldItem(this);" /></td></tr>');
    id++;
}

/**
 * 移除字段组合
 * @param obj
 */
function removeFieldItem(obj) {
    var fields = $('tr[id^="fields"]');
    if (fields.length == 2) {
        $('#field-first').removeAttr('class', 'field-first');
    }
    $(obj).parent('td').parent('tr').remove();
    joinField();
}