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data-helper.ts
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317 lines (292 loc) · 9.75 KB
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/* eslint-disable object-curly-newline */
import { isJSFunction } from '@alilc/lowcode-types';
import { transformArrayToMap, transformStringToFunction, clone } from './common';
import { jsonp, request, get, post } from './request';
import { DataSource, DataSourceItem } from '../types';
const DS_STATUS = {
INIT: 'init',
LOADING: 'loading',
LOADED: 'loaded',
ERROR: 'error',
};
export class DataHelper {
host: any;
config: DataSource;
parser: any;
ajaxList: any[];
ajaxMap: any;
dataSourceMap: any;
appHelper: any;
constructor(comp: any, config: DataSource, appHelper: any, parser: any) {
this.host = comp;
this.config = config || {};
this.parser = parser;
this.ajaxList = config?.list || [];
this.ajaxMap = transformArrayToMap(this.ajaxList, 'id');
this.dataSourceMap = this.generateDataSourceMap();
this.appHelper = appHelper;
}
// 重置config，dataSourceMap状态会被重置；
resetConfig(config = {}) {
this.config = config as DataSource;
this.ajaxList = (config as DataSource)?.list || [];
this.ajaxMap = transformArrayToMap(this.ajaxList, 'id');
this.dataSourceMap = this.generateDataSourceMap();
return this.dataSourceMap;
}
// 更新config，只会更新配置，状态保存；
updateConfig(config = {}) {
this.config = config as DataSource;
this.ajaxList = (config as DataSource)?.list || [];
const ajaxMap: any = transformArrayToMap(this.ajaxList, 'id');
// 删除已经移除的接口
Object.keys(this.ajaxMap).forEach((key) => {
if (!ajaxMap[key]) {
delete this.dataSourceMap[key];
}
});
this.ajaxMap = ajaxMap;
// 添加未加入到dataSourceMap中的接口
this.ajaxList.forEach((item) => {
if (!this.dataSourceMap[item.id]) {
this.dataSourceMap[item.id] = {
status: DS_STATUS.INIT,
load: (...args: any) => {
// @ts-ignore
return this.getDataSource(item.id, ...args);
},
};
}
});
return this.dataSourceMap;
}
generateDataSourceMap() {
const res: any = {};
this.ajaxList.forEach((item) => {
res[item.id] = {
status: DS_STATUS.INIT,
load: (...args: any) => {
// @ts-ignore
return this.getDataSource(item.id, ...args);
},
};
});
return res;
}
updateDataSourceMap(id: string, data: any, error: any) {
this.dataSourceMap[id].error = error || undefined;
this.dataSourceMap[id].data = data;
this.dataSourceMap[id].status = error ? DS_STATUS.ERROR : DS_STATUS.LOADED;
}
getInitData() {
const initSyncData = this.parser(this.ajaxList).filter((item: DataSourceItem) => {
if (item.isInit) {
this.dataSourceMap[item.id].status = DS_STATUS.LOADING;
return true;
}
return false;
});
// 所有 datasource 的 datahandler
return this.asyncDataHandler(initSyncData).then((res) => {
let { dataHandler } = this.config;
if (isJSFunction(dataHandler)) {
dataHandler = transformStringToFunction(dataHandler.value);
}
if (!dataHandler || typeof dataHandler !== 'function') return res;
try {
return (dataHandler as any).call(this.host, res);
} catch (e) {
console.error('请求数据处理函数运行出错', e);
}
});
}
getDataSource(id: string, params: any, otherOptions: any, callback: any) {
const req = this.parser(this.ajaxMap[id]);
const options = req.options || {};
if (typeof otherOptions === 'function') {
callback = otherOptions;
otherOptions = {};
}
const { headers, ...otherProps } = otherOptions || {};
if (!req) {
console.warn(`getDataSource API named ${id} not exist`);
return;
}
return this.asyncDataHandler([
{
...req,
options: {
...options,
// 支持参数为array的情况，当参数为array时，不做参数合并
params:
Array.isArray(options.params) || Array.isArray(params)
? params || options.params
: {
...options.params,
...params,
},
headers: {
...options.headers,
...headers,
},
...otherProps,
},
},
])
.then((res: any) => {
try {
callback && callback(res && res[id]);
} catch (e) {
console.error('load请求回调函数报错', e);
}
return res && res[id];
})
.catch((err) => {
try {
callback && callback(null, err);
} catch (e) {
console.error('load请求回调函数报错', e);
}
return err;
});
}
asyncDataHandler(asyncDataList: any[]) {
return new Promise((resolve, reject) => {
const allReq = [];
const doserReq: Array<{name: string; package: string; params: any }> = [];
const doserList: string[] = [];
const beforeRequest = this.appHelper && this.appHelper.utils && this.appHelper.utils.beforeRequest;
const afterRequest = this.appHelper && this.appHelper.utils && this.appHelper.utils.afterRequest;
const csrfInput = document.getElementById('_csrf_token');
const _tb_token_ = (csrfInput as any)?.value;
asyncDataList.forEach((req) => {
const { id, type, options } = req;
if (!id || !type) return;
if (type === 'doServer') {
const { uri, params } = options || {};
if (!uri) return;
doserList.push(id);
doserReq.push({ name: uri, package: 'cms', params });
} else {
allReq.push(req);
}
});
if (doserReq.length > 0) {
allReq.push({
type: 'doServer',
options: {
uri: '/nrsService.do',
cors: true,
method: 'POST',
params: {
data: JSON.stringify(doserReq),
_tb_token_,
},
},
});
}
if (allReq.length === 0) resolve({});
const res: any = {};
// todo:
Promise.all(
allReq.map((item: any) => {
return new Promise((resolve) => {
const { type, id, dataHandler, options } = item;
const doFetch = (type: string, options: any) => {
this.fetchOne(type as any, options)
?.then((data: any) => {
if (afterRequest) {
this.appHelper.utils.afterRequest(item, data, undefined, (data: any, error: any) => {
fetchHandler(data, error);
});
} else {
fetchHandler(data, undefined);
}
})
.catch((err: Error) => {
if (afterRequest) {
// 必须要这么调用，否则beforeRequest中的this会丢失
this.appHelper.utils.afterRequest(item, undefined, err, (data: any, error: any) => {
fetchHandler(data, error);
});
} else {
fetchHandler(undefined, err);
}
});
};
const fetchHandler = (data: any, error: any) => {
if (type === 'doServer') {
if (!Array.isArray(data)) {
data = [data];
}
doserList.forEach((id, idx) => {
const req: any = this.ajaxMap[id];
if (req) {
res[id] = this.dataHandler(id, req.dataHandler, data && data[idx], error);
this.updateDataSourceMap(id, res[id], error);
}
});
} else {
res[id] = this.dataHandler(id, dataHandler, data, error);
this.updateDataSourceMap(id, res[id], error);
}
resolve({});
};
if (type === 'doServer') {
doserList.forEach((item) => {
this.dataSourceMap[item].status = DS_STATUS.LOADING;
});
} else {
this.dataSourceMap[id].status = DS_STATUS.LOADING;
}
// 请求切片
if (beforeRequest) {
// 必须要这么调用，否则beforeRequest中的this会丢失
this.appHelper.utils.beforeRequest(item, clone(options), (options: any) => doFetch(type, options));
} else {
doFetch(type, options);
}
});
}),
)
.then(() => {
resolve(res);
})
.catch((e) => {
reject(e);
});
});
}
// dataHandler todo:
dataHandler(id: string, dataHandler: any, data: any, error: any) {
if (isJSFunction(dataHandler)) {
dataHandler = transformStringToFunction(dataHandler.value);
}
if (!dataHandler || typeof dataHandler !== 'function') return data;
try {
return dataHandler.call(this.host, data, error);
} catch (e) {
console.error(`[${ id }]单个请求数据处理函数运行出错`, e);
}
}
fetchOne(type: DataSourceType, options: any) {
// eslint-disable-next-line prefer-const
let { uri, url, method = 'GET', headers, params, ...otherProps } = options;
otherProps = otherProps || {};
if (type === 'jsonp') {
return jsonp(uri, params, otherProps);
}
if (type === 'fetch') {
switch (method.toUpperCase()) {
case 'GET':
return get(uri, params, headers, otherProps);
case 'POST':
return post(uri, params, headers, otherProps);
default:
return request(uri, method, params, headers, otherProps);
}
}
console.error(`Engine default dataSource not support type:[${type}] dataSource request!`);
}
}
type DataSourceType = 'fetch' | 'jsonp';