/**
 * 版本管理相关js
 *
 * @author CaiAoLin
 * @date 2017/7/28
 * @version
 */
$(document).ready(function() {
    let isAdding = false;
    // 初始化数据
    initVersion();

    // 新增版本
    $("#add-version").click(function() {
        try {
            let [name, standardBill, rationLib, standardBillString, rationLibString] = getAndValidData();

            $.ajax({
                url: '/version/add',
                type: 'post',
                data: {name: name,standard_bill_id: standardBill, ration_lib_id: rationLib,
                    standard_bill: standardBillString, ration_lib: rationLibString},
                error: function() {
                    isAdding = false;
                },
                beforeSend: function() {
                    isAdding = true;
                },
                success: function(response) {
                    isAdding = false;
                    if (response.err === 0) {
                        window.location.reload();
                    } else {
                        let msg = response.msg === undefined ? '未知错误' : response.msg;
                        alert(msg);
                    }
                }
            });

        } catch (error) {
            alert(error);
        }
    });

    // 选择省份后读取数据
    $("select[name='standard_bill_province'],select[name='ration_lib_province']").change(function() {
        let name = $(this).attr('name');

        let billListData = billList === undefined ? [] : JSON.parse(billList);
        let rationLibData = rationList === undefined ? [] : JSON.parse(rationList);
        if (billListData.length <= 0 || rationLibData.length <= 0) {
            return false;
        }
        let sourceData = name === 'standard_bill_province' ? billListData : rationLibData;
        let selectedId = $(this).val();
        if (sourceData[selectedId] === undefined) {
            return false;
        }
        let defaultString = name === 'standard_bill_province' ? '请选择标准清单' : '请选择定额库';
        let html = '<option value="">' + defaultString + '</option>';
        for(let tmp of sourceData[selectedId]) {
            let tmpHtml = '<option value="' + tmp.id + '">' + tmp.name + '</option>';
            html += tmpHtml;
        }

        // 渲染
        let targetSelector = name === 'standard_bill_province' ? $("select[name='standard_bill']") : $("select[name='ration_lib']");
        targetSelector.children('option').remove();
        targetSelector.html(html);
    });

});

/**
 * 初始化
 *
 * @return {void|boolean}
 */
function initVersion() {
    if (province === undefined) {
        alert('初始化失败!');
        return false;
    }

    province = JSON.parse(province);
    if (province.length <= 0) {
        alert('省份数据加载失败!');
        return false;
    }

    let billProvinceElement = $("select[name='standard_bill_province']");
    let rationProvinceElement = $("select[name='ration_lib_province']");
    let html = '';
    for (let tmp of province) {
        let tmpHtml = '<option value="' + tmp.id + '">' + tmp.name + '</option>';
        html += tmpHtml;
    }

    billProvinceElement.children('option').first().after(html);
    rationProvinceElement.children('option').first().after(html);
}

/**
 * 校验数据
 *
 * @return {Array}
 */
function getAndValidData() {
    let name = $("input[name='version_name']").val();
    let standardBill = $("select[name='standard_bill']").val();
    let rationLib = $("select[name='ration_lib']").val();

    if (name === '') {
        throw '版本名字不能为空';
    }

    if (standardBill === '' || standardBill === undefined) {
        throw '请选择标准清单库';
    }

    if (rationLib === '' || rationLib === undefined) {
        throw '请选择定额库';
    }

    let standardBillString = $("select[name='standard_bill']").children("option:selected").text();
    let rationLibString = $("select[name='ration_lib']").children("option:selected").text();

    return [name, standardBill, rationLib, standardBillString, rationLibString];
}