import _ from 'lodash'
import {grid} from '../Defaults'
import {baseConfig} from "./base";
import {lookupFn, lookupScope} from "../lib/lib";
import LAY_EXCEL from "lay-excel"
import {
    disabled,
    fieldLabel,
    gravity, height, metaId,
    PropertyDescriptionTable,
    tooltip,
    value, width,
    YvBase
} from "../PropertyDescriptionTable";
import {PropertyDescription} from "../PropertyDescription";
import {gridInvokeBuild} from "./stores";
import {msg} from 'src/message';


const defaultGrid = grid
export default function () {

    Ext.define('Yvan.Grid', {
        extend: 'Ext.grid.Panel',
        xtype: 'yvgrid',

        constructor(config) {
            const me = this
            const {dataSource} = config
            if (!window["IS_DESIGN_MODE"]) {
                this.columnConfigCacheKey = this.makeColumnConfigCacheKey(config)
                if (Array.isArray(config.columns) && config.columns.length > 0) {
                    const cacheData = this.getColumnConfigCache()
                    if (Array.isArray(cacheData) && cacheData.length > 0) {
                        const newColumns = []

                        for (let j = 0; j < cacheData.length; j++) {
                            const itData = cacheData[j]
                            for (let i = 0; i < config.columns.length; i++) {
                                const column = config.columns[i]
                                if (itData.dataIndex === column.dataIndex) {
                                    if (itData.width) {
                                        column.width = itData.width
                                    }
                                    column.hidden = itData.hidden
                                    column.locked = itData.locked
                                    newColumns.push(column)
                                    break
                                }
                            }
                        }
                        config.columns = newColumns
                    }
                }
            }
            const newConfig = _.defaultsDeep({
                // 强制性属性

            }, baseConfig(config, 'row-item'), config, grid)

            // 在面板上的组件
            const scope = newConfig.$initParent.yvanScope || newConfig.$initParent.lookupReferenceHolder().yvanScope;

            const buttons = []

            const {getRowClass} = newConfig
            if (typeof getRowClass === 'string' && (
                _.startsWith(getRowClass, "scope.") ||
                _.startsWith(getRowClass, "system."))
            ) {
                const fn = lookupFn(scope, getRowClass)
                _.set(newConfig, 'viewConfig.getRowClass', fn)
            }

            if (!newConfig.hideExport) {
                buttons.push({
                    xtype: 'button',
                    tooltip: '导出Excel',
                    iconCls: 'x-fa fa-download',
                    listeners: {
                        click: this.exportExcel
                    },
                })
            }
            if (!newConfig.hideAutoSize) {
                buttons.push({
                    xtype: 'button',
                    iconCls: 'x-fa fa-text-width',
                    tooltip: '自适应宽度',
                    listeners: {
                        click: this.autoSizeColumns
                    }
                })
            }
            if (!newConfig.hideClearFilter) {
                buttons.push({
                    xtype: 'button',
                    tooltip: '清空筛选',
                    iconCls: 'x-fa fa-filter',
                    handler: this.clearFilter
                })
            }
            if (!newConfig.hideSaveGridUIConfig) {
                buttons.push({
                    xtype: 'button',
                    tooltip: '保存表格自定义配置',
                    iconCls: 'x-fa fa-cogs',
                    handler: this.saveGridUIConfig
                })
            }
            if (!newConfig.hideClearGridUIConfig) {
                buttons.push({
                    xtype: 'button',
                    tooltip: '还原表格自定义配置',
                    iconCls: 'x-fa fa-reply-all',
                    handler: this.clearGridUIConfig
                })
            }

            if (!newConfig.hideFootbar) {
                if (newConfig.pagination) {
                    newConfig.bbar = new Ext.PagingToolbar({
                        // pageSize: newConfig.pageSize, 这个值是无效的
                        displayInfo: true,
                        store: this.store,
                        emptyMsg: '没有记录',
                        items: [
                            {
                                xtype: 'combobox',
                                tooltip: '分页',
                                queryMode: 'local',
                                editable: false,
                                allowBlank: true,
                                labelAlign: 'right',
                                width: 90,
                                // labelWidth: 30,
                                listConfig: {
                                    minWidth: null
                                },
                                value: 50,
                                valueField: undefined,
                                displayField: undefined,
                                hideClear: true,
                                store: newConfig.pageSizeOption,
                                listeners: {
                                    change: (sender, nv, ov) => {
                                        this.store.pageSize = nv;
                                        this.store.loadPage(1);
                                    }
                                }
                            },
                            ...buttons
                        ]
                    })
                } else {
                    newConfig.bbar = {
                        xtype: 'toolbar', overflowHandler: 'menu',
                        items: [
                            {
                                xtype: 'button',
                                tooltip: '刷新',
                                iconCls: 'x-fa fa-refresh',
                                handler: () => {
                                    this.reload()
                                }
                            },
                            '-',
                            ...buttons,
                        ]
                    }
                }
            }

            _.each(newConfig.columns, c => {
                const {renderer} = c
                if (typeof renderer === 'string' && (
                    _.startsWith(renderer, "scope.") ||
                    _.startsWith(renderer, "system."))
                ) {
                    if (newConfig.$initParent) {
                        if (scope) {
                            const rendererFn = lookupFn(scope, renderer)
                            c.renderer = rendererFn
                        }
                    }
                }
            })

            this.superclass.constructor.call(this, newConfig)
            this.store.pageSize = newConfig.pageSize
        },

        setData(value) {
            const me = this
            me._setDataReal(value)
        },

        /**
         * 添加行，并进入编辑状态
         * @param record 新行的属性集
         * @param editRowCol 要编辑的列序号
         */
        appendEditRow(record, editRowCol) {
            const records = this.getStore().add(record)
            const recNew = records[0]
            this.setSelection(records)

            if (typeof editRowCol === 'number') {
                const ce = this.findPlugin('cellediting')
                this.editingPlugin = ce
                ce.startEdit(recNew, editRowCol)
            }
        },

        /**
         * 移除行
         * @param record 如果记录传空，就是当前选中的行
         */
        removeEditRow(record) {
            if (!record) {
                record = this.selection
            }

            if (!record) {
                msg('请选中要删除的行')
                return
            }

            this.getStore().remove(record)
        },

        /**
         * 获取全部原始数据
         */
        getDataRows() {
            return this.getStore().data.items.map(r => r.data)
        },

        _transform(data) {
            // 无论是 grid._setDataReal 还是 stores.gridInvokeBuild 都会走这个函数，设值前都可以改变表格值
            _.forEach(data, row => {
                row._origin = _.clone(row)
            })
        },

        _setDataReal(value) {
            const me = this
            this._transform(value)
            me.setStore(new Ext.data.Store({
                fields: getFileds(this),
                data: value
            }))
        },

        /**
         * 轻量级刷新
         */
        refreshData() {
            const store = this.getStore()
            if (store) {
                store.reload()
            }
        },

        /**
         * 为表格强制设置焦点
         * @param seq 顺序号
         */
        focusRow(seq) {
            this.setSelection(this.store.getAt(seq))
            this.getView().focusRow(seq)
        },

        /**
         * 重新载入数据（重新计算参数）
         */
        reload(reloadParams = {}) {
            const me = this
            const {config} = me

            if (config.dataSourceCallbackFn) {
                // 函数请求刷新
                const scope = lookupScope(this)
                _.defer(() => {
                    me.setLoading(true)
                })
                config.dataSourceCallbackFn.call(scope, me, {
                    successCallback(value) {
                        me._setDataReal(value)
                        _.defer(() => {
                            me.setLoading(false)
                        })
                        me.fireEvent('dataLoadComplete', me, true, value);
                    },
                    failCallback(error) {
                        _.defer(() => {
                            me.setLoading(false)
                        })
                        me.fireEvent('dataLoadComplete', me, false, error);
                    }
                })
                return
            }

            // if (this.store) {
            //     this.store.reload({aaaa: 1, bbbb: 2})
            // }
            const {dataSource} = config
            if (_.isPlainObject(dataSource) && !window["IS_DESIGN_MODE"]) {
                const scope = lookupScope(me)
                gridInvokeBuild(scope, me, config, dataSource, reloadParams)
            }
        },

        exportCurrentExcelClick() {
            const me = this
            const {config} = me
            const scope = lookupScope(me)
            let excelFileName = config.excelFileName || scope.vjson.title || _.uniqueId("excel-")
            if (excelFileName.endsWith(".xlsx")) {
                excelFileName = excelFileName.split(".xlsx")[0]
            }
            excelFileName += ".xlsx"
            const rowsAll = this.getStore().getData().items?.map(r => r.data);
            const excelData = me.makeExcelData(rowsAll)
            LAY_EXCEL.exportExcel(excelData, excelFileName, 'xlsx')

        },

        exportExcelClick(excelExportParams) {
            const me = this
            const {config} = me
            excelExportParams.isExcelExport = true
            const scope = lookupScope(me)
            const {dataSource} = config

            let excelFileName = config.excelFileName || scope.vjson.title || _.uniqueId("excel-")

            gridInvokeBuild(scope, me, config, dataSource, excelExportParams, true, (responseData) => {
                let page = parseInt(responseData.pagination?.current) || 1
                const size = parseInt(responseData.pagination?.size) || me.exportExcelPageSize
                const total = parseInt(responseData.pagination?.total) || responseData.data?.length || 0

                me.exportExcelCurrentPage = page
                me.exportExcelPageSize = size
                me.exportExcelTotal = total

                if (excelFileName.endsWith(".xlsx")) {
                    excelFileName = excelFileName.split(".xlsx")[0]
                }
                excelFileName += "(第" + me.exportExcelCurrentPage + "页,共" + Math.ceil(total / size) + "页、" + total + "条)"
                excelFileName += ".xlsx"
                const excelData = me.makeExcelData(responseData.data)
                LAY_EXCEL.exportExcel(excelData, excelFileName, 'xlsx')

                if (page < total / size) {
                    page++
                }
            })
        },

        makeExcelData(jsonData) {

            if (!Array.isArray(jsonData) || jsonData.length === 0) {
                return
            }
            const me = this
            const data = [];
            // 获取表格的列定义
            const headerTextArr = []
            const headers = []
            for (let i = 0; i < me.headerCt.getGridColumns().length; i++) {
                const header = me.headerCt.getGridColumns()[i]
                if (!header.isHidden()) {
                    const textStr = _.trim(header.text)
                    const dataIndexStr = _.trim(header.dataIndex)
                    if (dataIndexStr) {
                        if (textStr === '') {
                            headerTextArr.push(dataIndexStr)
                        } else {
                            headerTextArr.push(textStr)
                        }
                        headers.push(header)
                    }
                }
            }
            if (headers.length === 0) {
                return
            }

            data.push(headerTextArr)
            for (let i = 0; i < jsonData.length; i++) {
                const dataRow = jsonData[i]
                const row = []
                for (let j = 0; j < headers.length; j++) {
                    const key = headers[j].dataIndex
                    let value = dataRow[key]
                    if (typeof headers[j].renderer === 'function') {
                        value = headers[j].renderer(value)
                    }
                    row.push(value || "")
                }
                data.push(row)
            }
            return data
        },

        initComponent() {
            const me = this
            const {config} = me
            const scope = lookupScope(this)

            if (!window["IS_DESIGN_MODE"]) {
                // 转换 dataSource 属性
                convertDataSource(me, scope, config)
            }

            this.on({
                afterrender(sender) {
                    const me = this
                    const {config} = this
                    const {dataSource} = config

                    if (config.autoLoad) {
                        if (config.dataSourceCallbackFn) {
                            me.reload()

                        } else if (_.isPlainObject(dataSource)) {
                            me.reload()
                        }
                    }

                    if (config.contextMenu === true && _.isArray(config.tbar)) {
                        const vm = this.lookupViewModel()
                        this.contextMenu = this.add(new Ext.menu.Menu({
                            viewModel: vm,
                            items: _.map(config.tbar, item => {
                                const menuItem = {
                                    ...item
                                }
                                if (menuItem.xtype === 'button') {
                                    delete menuItem.xtype
                                }
                                return menuItem
                            })
                        }))

                    } else if (_.isPlainObject(config.contextMenu)) {
                        this.contextMenu = this.add(config.contextMenu)
                    }

                    const $dom = $(sender.el.dom)
                    $dom.on('keydown', (e) => {
                        me.fireEvent('keydown', me, e,)

                    }).on('keyup', (e) => {
                        me.fireEvent('keyup', me, e,)
                    })
                },
                itemcontextmenu(view, rec, node, index, e) {
                    if (this.contextMenu) {
                        e.stopEvent();
                        this.contextMenu.show().setLocalXY(e.getXY());
                        return false;
                    }
                },
                // columnmove(sender, column, fromIndex, toIndex, eOpts) {
                //     this.setColumnConfigCache()
                // },
                // columnhide(sender, column, eOpts) {
                //     this.setColumnConfigCache()
                // },
                // columnshow(sender, column, eOpts) {
                //     this.setColumnConfigCache()
                // },
                // columnresize(sender, column, width, eOpts) {
                //     this.setColumnConfigCache()
                // },
                destory() {
                },
            })


            if (this.store?.proxy) {
                // 为 stores.proxy.buildRequest 做准备
                this.store.proxy.$owner = this
            }

            this.superclass.initComponent.call(this)
        },

        // 生成列自定义的缓存key
        makeColumnConfigCacheKey(config) {
            const me = this
            const scope = config.$initParent.yvanScope || config.$initParent.lookupReferenceHolder().yvanScope;
            let key = "gridColumnCache-" + scope.scopeKey + "-"
            if (config.reference) {
                key += config.reference
            } else {
                let subKey = ""
                for (let i = 0; i < config.columns.length; i++) {
                    const column = config.columns[i]
                    if (column.dataIndex) {
                        subKey += column.dataIndex
                    }
                }
                key += subKey
            }
            return key
        },

        getColumnConfigCache() {
            const key = this.columnConfigCacheKey
            const dataStr = localStorage.getItem(key)
            if (dataStr) {
                return JSON.parse(dataStr)
            }
            return ""
        },

        setColumnConfigCache() {
            const key = this.columnConfigCacheKey
            const cacheData = []
            const columns = this.headerCt.getGridColumns()
            let index = 0
            for (let i = 0; i < columns.length; i++) {
                const column = columns[i]
                if (column.dataIndex) {
                    cacheData.push({
                        dataIndex: column.dataIndex,
                        width: column.width,
                        hidden: column.hidden,
                        locked: column.locked,
                        index
                    })
                    index++
                }
            }
            localStorage.setItem(key, JSON.stringify(cacheData))
        },

        autoSizeColumns(sender) {
            const grid = sender.up('grid')
            // const columns = grid.columns;
            // for (let i = 0; i < columns.length; i++) {
            //     const column = columns[i];
            //     grid.getView().autoSizeColumn(column);
            //     column.setWidth(column.getWidth() + 5);
            // }
            for (let i = 1; i < grid.headerCt.getColumnCount(); i++) {
                grid.headerCt.getGridColumns()[i].autoSize(i);
                grid.headerCt.getGridColumns()[i].setWidth(grid.headerCt.getGridColumns()[i].getWidth() + 15);
            }
        },

        clearFilter(sender) {
            sender.up('grid').filters.clearFilters();
        },

        saveGridUIConfig(sender) {
            const grid = sender.up('grid')
            grid.setColumnConfigCache()
            msg('保存设置成功!')
        },

        clearGridUIConfig(sender) {
            const grid = sender.up('grid')
            const key = grid.columnConfigCacheKey
            localStorage.setItem(key, "")
            msg('清空设置成功，重新打开后生效!')
        },

        setLoading(value) {
            if (value) {
                this.mask('读取中')
            } else {
                this.unmask()
            }
        },

        exportExcel(sender) {
            const rect = sender.btnEl.dom.getBoundingClientRect()
            const scope = lookupScope(this)
            const grid = sender.up('grid')
            const treeMenu = new Ext.menu.Menu(
                {
                    xtype: 'menu',
                    floated: false,
                    width: 300,
                    docked: 'left',
                    items: [{
                        text: '导出表格当前的数据',
                        iconCls: 'x-fa fa-download',
                        listeners: {
                            click: (sender, value) => {
                                grid.exportCurrentExcelClick()
                            }
                        }
                    }, {
                        xtype: "textfield",
                        fieldLabel: '当前导出页',
                        maskRe: /[0-9]/,
                        value: grid.exportExcelCurrentPage,
                        listeners: {
                            render: (sender) => {
                                grid.exportExcelCurrentPageCmp = sender
                            },
                            change: (sender, value) => {
                                let v = parseInt(value)
                                if (isNaN(v) || v === 0) {
                                    window['system'].msg("页码不能为0")
                                    v = 1
                                    sender.setValue(v)
                                }
                                const size = parseInt(grid.exportExcelPageSize)
                                const total = parseInt(grid.exportExcelTotal)
                                if (v > total / size) {
                                    v = parseInt(total / size + "")
                                }
                                grid.exportExcelCurrentPage = v + ""
                            }
                        }
                    }, {
                        xtype: "textfield",
                        fieldLabel: '导出页大小',
                        maskRe: /[0-9]/,
                        value: grid.exportExcelPageSize,
                        listeners: {
                            render: (sender) => {
                                grid.exportExcelPageSizeCmp = sender
                            },
                            change: (sender, value) => {
                                let v = parseInt(value)
                                if (isNaN(v) || v === 0) {
                                    window['system'].msg("导出页大小不能为0")
                                    v = defaultGrid.exportExcelPageSize
                                    sender.setValue(v);
                                }
                                if (v >= 10000) {
                                    window['system'].msg("导出页大小不能大于10000")
                                    v = 10000
                                    sender.setValue(v);
                                }
                                let page = parseInt(grid.exportExcelCurrentPage)
                                const total = parseInt(grid.exportExcelTotal)
                                if (page > total / v) {
                                    page = parseInt(total / v + "") + 1
                                    grid.exportExcelCurrentPageCmp.setValue(page)
                                }
                                grid.exportExcelPageSize = v + ""
                            }
                        }
                    }, {
                        xtype: "textfield",
                        fieldLabel: '总条数',
                        value: grid.exportExcelTotal,
                        readOnly: true
                    }, {
                        text: '导出',
                        iconCls: 'x-fa fa-download',
                        listeners: {
                            click: (sender, value) => {
                                grid.exportExcelClick({
                                    exportExcelPageSize: grid.exportExcelPageSize,
                                    exportExcelCurrentPage: grid.exportExcelCurrentPage
                                })
                            }
                        }
                    }]
                }
            );
            treeMenu.showAt(rect.left, rect.top - 120);

            // for (let i = 1; i < grid.headerCt.getColumnCount(); i++) {
            //     grid.headerCt.getGridColumns()[i].autoSize(i);
            //     grid.headerCt.getGridColumns()[i].setWidth(grid.headerCt.getGridColumns()[i].getWidth() + 15);
            // }
        }

        // reload() {
        //     dataSourceReload(this)
        // },
    })


    PropertyDescriptionTable.set(
        'yvgrid',
        new PropertyDescription(YvBase, {
            props: [
                fieldLabel, value, disabled,
                gravity, tooltip, metaId, width, height
            ],
        })
    )
}

/**
 * 获取 columns 中所有的 dataIndex
 */
function getFileds(newConfig) {
    const fields = []
    _.forEach(newConfig.columns, c => {
        if (c.dataIndex) {
            fields.push(c.dataIndex)
        }
    })
    return fields
}

function convertDataSource(sender, scope, newConfig) {
    if (typeof newConfig.store !== 'undefined') {
        // 有 store 属性的情况下，不做任何事
        return
    }

    if (typeof newConfig.dataSource === 'undefined') {
        // 没有定义 dataSource 的情况下，不做任何事
        return
    }

    if (_.isArray(newConfig.data)) {
        // 有 data 属性赋值的情况下
        newConfig.store = {
            fields: getFileds(newConfig),
            data: newConfig.data
        }
        delete newConfig.data
        return
    }

    let {dataSource} = newConfig
    if (typeof dataSource === 'string') {
        // dataSource 是字符串的情况下，找到成员函数
        dataSource = lookupFn(scope, dataSource)
    }

    if (typeof dataSource === 'function') {
        // dataSource 是函数的情况下，在 afterrender 之后进行回调
        newConfig.store = new Ext.data.Store({
            fields: getFileds(newConfig),
            // data: [],
            autoLoad: true,
            proxy: {
                type: 'memory',
                data: [],
                // reader: {
                //     type: 'json',
                //     rootProperty: 'users'
                // }
            }
        })
        newConfig.dataSourceCallbackFn = dataSource
        return
    }


    // throw new TypeError('无法识别的调用方法')
}