/**
 * 附件统一管理（common_attachment）
 *
 * 删除走后台 Attachment::delete()：先经 FileStorageService 触发 FileDelete 事件
 * （OSS / FTP 等自定义存储在此接管物理删除），再软删记录。
 */
layui.define(['table', 'layer', 'form', 'auth', 'http', 'jquery'], function (exports) {
    var table = layui.table,
        layer = layui.layer,
        form  = layui.form,
        auth  = layui.auth,
        http  = layui.http,
        $     = layui.jquery;

    // URL 由浏览器按当前页面目录解析（/admin/attachment/），只写动作名
    var FUNC = {
        index:  'index',
        delete: 'delete'
    };

    function parse(res) {
        return {
            code:  res.code,
            msg:   res.message,
            count: res.count || 0,
            data:  res.data || []
        };
    }

    function post(url, data, done) {
        var loading = layer.load(2);
        http.post(url, data).then(function (res) {
            layer.close(loading);
            if (res && res.code === 0) {
                layer.msg(res.message || '操作成功', {icon: 1});
                if (done) { done(res.data); }
            } else {
                layer.msg((res && res.message) || '操作失败', {icon: 2});
            }
        }).catch(function (err) {
            layer.close(loading);
            layer.msg('请求失败：' + (err && err.message ? err.message : '网络异常'), {icon: 2});
        });
    }

    function checkedIds() {
        var rows = table.checkStatus('dataTable').data || [];
        var ids = [];
        for (var i = 0; i < rows.length; i++) { ids.push(rows[i].id); }
        return ids;
    }

    var obj = {
        render: function () {
            table.render({
                elem: '#dataTable',
                url: FUNC.index,
                where: {},
                toolbar: '#tableBar',
                defaultToolbar: ['filter'],
                method: 'get',
                cols: [[
                    {type: 'checkbox', width: 50},
                    {field: 'id', title: 'ID', width: 70, sort: true},
                    {title: '预览', width: 70, templet: '#thumbTpl', align: 'center'},
                    {field: 'original', title: '文件名', minWidth: 220},
                    {field: 'module', title: '模块', width: 90},
                    {field: 'size_text', title: '大小', width: 100},
                    {field: 'storage', title: '存储', width: 90},
                    {field: 'uid', title: '上传者', width: 90},
                    {field: 'create_at_text', title: '时间', width: 170, sort: true},
                    {title: '操作', width: 130, toolbar: '#dataBar', fixed: 'right'}
                ]],
                page: true,
                limit: 20,
                limits: [20, 50, 100],
                response: {statusCode: 0},
                parseData: parse,
                done: function () {
                    auth.filterDom($('#dataTable').next('.layui-table-view'));
                    auth.filterDom('.layui-btn[data-perm]');
                }
            });
        },

        events: function () {
            table.on('toolbar(dataTable)', function (o) {
                if (o.event === 'deleteSelected') {
                    var ids = checkedIds();
                    if (ids.length === 0) {
                        return layer.msg('请先勾选要删除的附件', {icon: 2});
                    }
                    layer.confirm(
                        '确定删除选中的 ' + ids.length + ' 个附件？<br><span style="color:#ff5722">会同时删除存储上的文件</span>',
                        {title: '提示'},
                        function (index) {
                            layer.close(index);
                            post(FUNC.delete, {ids: ids}, function () {
                                table.reload('dataTable');
                                setTimeout(function () { location.reload(); }, 800);
                            });
                        }
                    );
                }
            });

            table.on('tool(dataTable)', function (o) {
                if (o.event === 'open') {
                    window.open(o.data.url, '_blank');
                } else if (o.event === 'delete') {
                    layer.confirm('确定删除该附件？会同时删除存储上的文件', {title: '提示'}, function (index) {
                        layer.close(index);
                        post(FUNC.delete, {ids: [o.data.id]}, function () {
                            table.reload('dataTable');
                            setTimeout(function () { location.reload(); }, 800);
                        });
                    });
                }
            });

            form.on('submit(data-search-btn)', function (o) {
                table.reload('dataTable', {
                    where: {
                        keyword:    o.field.keyword,
                        module:     o.field.module,
                        only_image: o.field.only_image ? 1 : 0
                    },
                    page: {curr: 1}
                });
                return false;
            });
            $('#btn-reset').on('click', function () {
                setTimeout(function () {
                    table.reload('dataTable', {
                        where: {keyword: '', module: '', only_image: 0},
                        page: {curr: 1}
                    });
                }, 10);
            });
        }
    };

    obj.render();
    obj.events();

    exports('attachment', obj);
});