import _ from 'lodash'
import {Lib, lookupScope} from './lib'
import {ajax} from "./config";
import {Model} from 'src/types';
import {msg, showErrorDialog} from "../message";

export const SIMPLE_RE = /^(?:\{(?:(\d+)|([a-z_][\w\.]*))\})$/i

/**
 * 对某个表达式进行求值
 * a:{query.a},b:{query.b} -> a:aValue,b:bValue
 *
 * @example
 * calcExpress(cc.viewModel.data, "WH_ID:{query.WH_ID},C:{theGrid.selection.data.WH_ID}")
 * 计算出来的值是: "WH_ID:queryWhId,C:JH000000001"
 *
 * @param data 数据环境对象
 * @param express 表达式对象
 */
export function calcExpress(data, express) {
    let result = express

    if (SIMPLE_RE.test(express)) {
        // '{foo}' 简单表达式
        const path = express.substring(1, express.length - 1);
        return _.get(data, path)
    }

    while (true) {
        const mlist = result.match(/{(.*?)}/)
        if (!mlist) {
            break
        }

        const pathC = mlist[0]  // {query.a}
        const path = mlist[1]  // query.a

        let value = _.get(data, path)
        result = result.replaceAll(pathC, value || '')
    }

    return result
}

/**
 * 对个对象进行表达式求值，不用回调
 * @example
 * calcObjectFlat({query:{a:'aValue',b1:'b1Value',b2:'b2Value',d1:1,d2:2}}, { a:'{query.a}', b:{b1:'{query.b1}', b2:'{query.b2}'},c:'aa',d:['{query.d1}','{query.d2}'] })
 *
 * {
 *     a: '{query.a}',
 *     b: {
 *         b1: '{query.b1}',
 *         b2: '{query.b2}',
 *     },
 *     c: 'aa',
 *     d: [
 *         '{query.d1}',
 *         '{query.d2}'
 *     ]
 * }
 *
 * 计算结果为
 * {
 *     a: 'aValue',
 *     b: {
 *         b1: 'b1Value',
 *         b2: 'b2Value'
 *     },
 *     c: 'aa'
 *     d: [
 *         '1',
 *         '2'
 *     ]
 * }
 *
 * @param data
 * @param paramObject
 */
export function calcObjectFlat(data, paramObject) {
    const result = _.cloneDeep(paramObject)

    const trav = (param) => {
        _.forOwn(param, (value, key) => {
            if (_.isPlainObject(value)) {
                // 深度递归，对子对象进行求解
                trav(value)

            } else if (_.isString(value)) {
                // 字符串直接用 calcExpress 表达式求解
                param[key] = calcExpress(data, param[key])

            } else if (_.isArray(value)) {
                // 数组求解
                _.each(value, (v, idx) => {
                    value[idx] = calcExpress(data, v)
                })
            }
        })
    }

    trav(result)
    return result
}

/**
 * 根据表达式进入写值
 * express="{query.a}"   写值就是 viewModel.set('query.a', value)
 * express="test-{query.a}"   写值就会失败
 *
 * @example
 * tryWriteByExpress(cc.viewModel, "{query.WH_ID}", "111")
 * 写值成功
 *
 * tryWriteByExpress(cc.viewModel, "test-{query.WH_ID}", "111")
 * 写值失败
 *
 * @param viewModel VM对象
 * @param express 表达式对象
 * @param value 目标值
 */
export function tryWriteByExpress(viewModel, express, value) {
    if (SIMPLE_RE.test(express)) {
        // '{foo}' 简单表达式
        express = express.substring(1, express.length - 1);
        viewModel.set(express, value)
    }
}

/**
 * 尝试根据含表达式的对象回写, calcObjectFlat 的逆向方法
 * @example
 * tryWriteObject({ a:'{query.a}', b:{b1:'{query.b1}', b2:'{query.b2}'},c:'aa',d:['{query.d1}','{query.d2}']}, {a:'aValue', b:{b1:'b1Value', b2:'b2Value'}, c:'aa', d:[1,2]})
 *
 * expressObject:
 * {
 *     a: '{query.a}',
 *     b: {
 *         b1: '{query.b1}',
 *         b2: '{query.b2}',
 *     },
 *     c: 'aa',
 *     d: [
 *         '{query.a}',
 *         '{query.b2}'
 *     ]
 * }
 *
 * valueObject:
 * {
 *     a: 'aValue',
 *     b: {
 *         b1: 'b1Value',
 *         b2: 'b2Value'
 *     },
 *     c: 'aa'
 *     c: [
 *         'aValue',
 *         'b2Value'
 *     ]
 * }
 *
 * 系统会尝试回写
 * viewModel.set('query.a', 'aValue')
 * viewModel.set('query.b1', 'b1Value')
 * viewModel.set('query.b2', 'b2Value')
 *
 * @param expressObject 含表达式的对象
 * @param valueObject 表达式计算完成之后的结果对象
 * @param writeFn 写入的方法 (path, value)=>void
 */
export function tryWriteObject(expressObject, valueObject, writeFn) {

    const trav = (pathPrefix) => {
        let parent = expressObject
        if (_.size(pathPrefix) > 1) {
            parent = _.get(parent, pathPrefix.substring(1))
        }
        _.forOwn(parent, (value, key) => {
            if (_.isPlainObject(value)) {
                // 深度递归，对子对象进行求解
                trav(pathPrefix + "." + key)

            } else if (_.isString(value)) {
                // 字符串直接用 calcExpress 表达式求解
                if (SIMPLE_RE.test(value)) {
                    // If we have '{foo}' alone it is a literal 简单表达式
                    const targetPath = value.substring(1, value.length - 1);
                    const targetValue = _.get(valueObject, (pathPrefix + "." + key).substr(1))
                    if (!writeFn) {
                        console.log(`viewModel.set('${targetPath}', '${targetValue}')`)
                    } else {
                        writeFn(targetPath, targetValue)
                    }
                }
            } else if (_.isArray(value)) {
                _.each(value, (v, idx) => {
                    if (SIMPLE_RE.test(v)) {
                        const targetPath = (pathPrefix + "." + key).substr(1) + "[" + idx + "]";
                        const targetValue = _.get(valueObject, (pathPrefix + "." + key).substr(1) + "[" + idx + "]")
                        if (!writeFn) {
                            console.log(`viewModel.set('${targetPath}', '${targetValue}')`)
                        } else {
                            writeFn(targetPath, targetValue)
                        }
                    }
                })
            }
        })
    }

    trav("")
}

/**
 * 对多个表达式进行求值. 异步回调的方式返回
 *      {
 *          a: 1,
 *          b: '{someBind}',
 *          c: ['a', 'b', 'c'],
 *          d: ['a', 'b', '{someBind}'],
 *          e: {
 *              y: 1,
 *              z: 2
 *          },
 *          f: {
 *              y: 1,
 *              z: '{someBind}'
 *          }
 *      }
 *
 *      // Will produce
 *      {
 *          b: value,
 *          d: ['a', 'b', value],
 *          f: {
 *              y: 1,
 *              z: value
 *          }
 *      }
 * @param viewModel scope.viewModel对象
 * @param paramObject 求值对象
 */
export function calcObject(viewModel, paramObject) {
    // new Ext.app.bind.Multi({a:'1',b:'ddd{query.WH_ID}'},currentScope.viewModel,function(v){console.log(v)},currentScope, {single: true})
    return new Promise(resolve => {
        const schedule = new Ext.app.bind.Multi(
            paramObject,
            viewModel,
            (ret) => {
                schedule.destroy()

                // 从 Ext.data.Model 对象转换为 js-object 对象
                ret = toPlainObject(ret)

                resolve(ret)
            },
            viewModel,
            {single: true})
    })
}

/**
 * 用于任意组件 Ext.Component 构造时，获取当前组件对应的表格（如果不是 grid.columns 对象就会返回 undefined）
 * @param config 组件构造函数传入的 config 配置文件
 */
export function getParentGrid(config) {
    return config.$initParent?.grid
}

/**
 * 动态的为 combo 或 columns.combo 设置下拉框的值
 * @param sender 目标对象
 * @param config 目标对象的配置（在构造函数之前也可以）
 * @param getDictFn 获取字典的方法
 * @param bizKey 传入字典的参数
 */
export function setComboStore(sender, config, getDictFn, bizKey) {

    if (sender.$className === 'Ext.form.field.ComboBox') {
        getDictFn(bizKey, (r) => {
            if (sender.el?.dom) {
                // 异步回传
                sender.setStore(new Ext.data.Store(r))
            } else {
                // 同步回传
                config.store = new Ext.data.Store(r)
            }
        })
        return

    } else if (sender.xtype === 'gridcolumn') {
        const grid = getParentGrid(config)
        const {editor, renderer} = config
        getDictFn(bizKey, (r) => {
            if (sender.rendered) {
                // 已经渲染出来了, 用方法进行修改
                const editor = sender.getEditor()
                if (editor && editor.xtype === 'combo') {
                    const valueField = r.field[0]
                    const displayField = r.field[1]
                    editor.valueField = valueField
                    editor.setDisplayField(displayField)
                    editor.setStore(new Ext.data.Store({
                        field: ['id', 'text'],
                        data: [
                            {id: "Y", text: "启用"},
                            {id: "N", text: "禁用"},
                            {id: "D", text: "删除"},
                        ]
                    }))
                }

            } else {
                // 没有渲染之前，修改 config 即可
                if (editor && editor.xtype === 'combo') {
                    // 带编辑模式
                    editor.store = new Ext.data.Store(r)
                }
            }

            const renderer = (value, metaData) => {
                const valueField = r.field[0]
                const displayField = r.field[1]
                _.each(r.data, row => {
                    // 从 valueField 找到要显示的 displayField
                    if (row[valueField] == value) {
                        value = row[displayField]
                        return false
                    }
                })

                return value
            }

            if (sender.rendered) {
                // 已经渲染出来了, 对列进行渲染
                sender.renderer = renderer
                sender.getView().refresh()
            } else {
                config.renderer = renderer
            }
        })
        return
    }
    throw new TypeError("无法识别的组件类型")
}

/**
 * 调用服务器 Ajax
 */
export function invokeServer(url: string, ...args: any[]) {
    // @ts-ignore
    return ajax.func({
        url: url,
        method: 'invoke',
        args: args
    })
}

export function clearViewModelValues(viewModel, propertyName) {
    const dd = _.get(viewModel.getData(), propertyName)
    _.forOwn(dd, (value, key) => {
        viewModel.set(propertyName + '.' + key, '')
    })
}

export function reloadGrid(scope, gridRefName) {
    scope.refs[gridRefName]?.reload()
}

/**
 * 将 Ext.data.Model 对象 (及子属性) 转换为 js.object 对象
 */
export function toPlainObject(obj) {
    if (obj.isModel) {
        obj = obj.data
    }
    _.forOwn(obj, (v, k) => {
        // Ext.data.Model.constructor
        if (!v) {
            return
        }

        if (v.isModel) {
            v = v.data
        }

        if (typeof v === 'object') {
            obj[k] = toPlainObject(v)
        } else {
            obj[k] = v
        }
    })
    return obj
}

class SystemEventFu {

    @Lib({
        title: '提交表单',
        author: '罗一帆',
        createAt: '2021-07-02',
        updateAt: '2021-07-02',
        type: 'system',
        category: '表单',
        args: [
            {
                type: 'string',
                title: 'groovy 服务路径',
                name: 'groovyUrl',
            },
            {
                type: 'object',
                title: '参数的 lookup 表达式, 如果不填 默认提交所有的 viewModel.data',
                name: 'arg0',
                allowEmpty: true,
            }
        ]
    })
    formCommit(groovyUrl: string, arg0: any) {
        return function (sender) {
            const scope = lookupScope(sender)
            const valid = scope.down('form').isValid()
            if (!valid) {
                return
            }

            scope.setLoading(true)

            let data = scope.viewModel.data
            if (arg0) {
                data = calcObjectFlat(data, arg0)
            }

            invokeServer(groovyUrl, data).then(res => {
                if (res.success) {
                    scope.dialogSuccess(res)
                } else {
                    showErrorDialog(res.msg || '未知错误', sender)
                }

            }).catch((e) => {
                const msg = e.response?.data?.msg
                showErrorDialog(msg || e.toString(), sender)

            }).finally(() => {
                scope.setLoading(false)
            })
        }
    }

    @Lib({
        title: '对话框成功回调',
        author: '罗一帆',
        createAt: '2021-07-02',
        updateAt: '2021-07-02',
        type: 'system',
        category: '对话框',
        args: []
    })
    dialogSuccess() {
        debugger
    }

    @Lib({
        title: '清空 viewModel 某个属性',
        author: '罗一帆',
        createAt: '2021-07-02',
        updateAt: '2021-07-02',
        type: 'system',
        category: '表单',
        args: [
            {
                type: 'viewModel',
                title: 'propertyName 属性路径',
                name: 'propertyName',
            }
        ]
    })
    clearViewModelValues(propertyName: string) {
        return function (sender) {
            const scope = lookupScope(sender)
            clearViewModelValues(scope.viewModel, propertyName)
        }
    }

    @Lib({
        title: '清空 viewModel 某个属性,并刷新表格',
        author: '罗一帆',
        createAt: '2021-07-02',
        updateAt: '2021-07-02',
        type: 'system',
        category: '表单',
        args: [
            {
                type: 'viewModel',
                title: 'propertyName 属性路径',
                name: 'propertyName',
            },
            {
                type: 'refs',
                title: 'gridRef 表格引用名',
                allowEmpty: true,
                name: 'gridRefName',
            }
        ]
    })
    clearViewModelReloadGrid(propertyName: string, gridRefName?: string) {
        return function (sender) {
            const scope = lookupScope(sender)
            clearViewModelValues(scope.viewModel, propertyName)
            if (!gridRefName) {
                scope.down('grid')?.reload()

            } else {
                scope.refs[gridRefName]?.reload()
            }
        }
    }

    @Lib({
        title: '刷新表格',
        author: '罗一帆',
        createAt: '2021-07-02',
        updateAt: '2021-07-02',
        type: 'system',
        category: '表单',
        args: [
            {
                type: 'refs',
                title: 'gridRef 表格引用名, 不填写的情况下刷新所有',
                allowEmpty: true,
                name: 'gridRefName',
            }
        ]
    })
    reloadGrid(gridRefName: string) {
        return function (sender) {
            const scope = lookupScope(sender)
            if (!gridRefName) {
                scope.down('grid')?.reload()

            } else {
                scope.refs[gridRefName]?.reload()
            }
        }
    }

    @Lib({
        title: '显示对话框',
        author: '罗一帆',
        createAt: '2021-07-02',
        updateAt: '2021-07-02',
        type: 'system',
        category: '对话框',
        args: [
            {
                type: 'module',
                title: '业务模块名',
                name: 'url',
            },
            {
                type: 'object',
                title: '参数数据 lookup 表达式',
                name: 'lookupForData',
                allowEmpty: true,
            },
            {
                type: 'event',
                title: '成功回调',
                name: 'successCallback',
                allowEmpty: true,
            }
        ]
    })
    showDialog(url: string, lookupForData: any, successCallback) {
        return function (sender) {
            const scope = lookupScope(sender)
            const data = scope.viewModel.data

            const param = calcObjectFlat(data, lookupForData)
            // @ts-ignore
            require([url], (module) => {
                const ScopeClass = module.default
                const scope = new ScopeClass()
                scope.success = successCallback
                scope.showDialog(sender, {}, {data: param})
            })
        }
    }

    @Lib({
        title: '弹出查找框(不借助 search)',
        author: '罗一帆',
        createAt: '2021-07-02',
        updateAt: '2021-07-02',
        type: 'system',
        category: '对话框',
        args: [
            {
                type: 'module',
                title: '模块名 (WidgetDialog)',
                name: 'widgetUrl',
            },
            {
                type: 'object',
                title: 'lookup 映射关系',
                name: 'lookupSetting',
                allowEmpty: true,
            }
        ]
    })
    showWidget(widgetUrl, lookup, params) {
        return function (sender, queryValue) {
            showWidget(widgetUrl, lookup, params, sender, queryValue)
        }
    }

    @Lib({
        title: '根据 lookup 清空 viewModel',
        author: '罗一帆',
        createAt: '2021-07-05',
        updateAt: '2021-07-05',
        type: 'system',
        category: '表单',
        args: [
            {
                type: 'viewModel',
                title: 'lookup 设值',
                name: 'lookup',
            },
        ]
    })
    clearViewModelByLookup(lookup) {
        return function (sender) {
            clearViewModelByLookup(sender, lookup)
        }
    }

    @Lib({
        title: '关闭对话框',
        author: '罗一帆',
        createAt: '2021-07-05',
        updateAt: '2021-07-05',
        type: 'system',
        category: '对话框',
        args: [
            {
                type: 'event',
                title: '对话框的返回值回调',
                name: 'callBack',
            },
        ]
    })
    closeMe(callBack) {
        return function (sender) {
            const scope = lookupScope(sender)
            scope.close()

            if (callBack) {
                callBack.call(sender)
            }
        }
    }
}

export function clearViewModelByLookup(sender, lookup) {
    if (_.isPlainObject(lookup)) {
        const parentScope = lookupScope(sender)

        _.forOwn(lookup, (value, key) => {
            if (SIMPLE_RE.test(value)) {
                // '{foo}' 简单表达式
                const path = value.substring(1, value.length - 1);
                if (path !== 'queryValue') {
                    parentScope.viewModel.set(path, '')
                }
            }
        })
    }
}

export function showWidget(widgetUrl, lookup, params, sender, queryValue, vjson = {}) {
    const parentScope = lookupScope(sender)
    const me = sender

    // @ts-ignore
    require([widgetUrl], (widgetScope) => {
        const WidgetScopeClass = widgetScope.default
        widgetScope = new WidgetScopeClass()

        // 传递进 widget.model 的数据
        const widgetDialogData = calcObjectFlat({
            queryValue: queryValue,
            ...parentScope.viewModel.data
        }, lookup)

        _.map(params, (value, key) => {
            widgetDialogData[key] = value
        })

        widgetScope.parentScope = parentScope
        widgetScope.searchWidgetSuccess = (data) => {
            if (typeof lookup === 'string') {
                // lookup 是字符串的情况下，就是取某个列作为 value 值
                me.setValue(data[lookup])
                return
            }

            /**
             * lookup: {
             *   // 扩展到 viewModel 的值做更改
             *   WH_CODE: "{queryValue}",
             *   WH_NAME: "{query.WH_NAME}",
             * }
             */
            if (_.isPlainObject(lookup)) {
                const parentScope = lookupScope(sender)

                tryWriteObject(lookup, data, (path, value) => {
                        if (path === 'queryValue') {
                            me.setValue(value)
                        } else {
                            parentScope.viewModel.set(path, value)
                        }
                    }
                )
            }

            return true
        }
        widgetScope.showDialog(sender, vjson, {data: widgetDialogData})
    })
}

/**
 * 停止事件的默认行为
 * @param e
 */
export function stopEvent(e) {
    e.preventDefault()
    e.stopPropagation()
    // @ts-ignore
    window.event.cancelBubble = true
    e.returnValue = false;
    e.cancelBubble = true;
}