feat: approval, carbon copy unique record (#1349)

Reviewed-on: daoyoucloud/tachybase#1349
Co-authored-by: bai.zixv <bai.zixv@foxmail.com>
Co-committed-by: bai.zixv <bai.zixv@foxmail.com>

packages/plugins/@tachybase/plugin-workflow/src/server/features/approval/actions/approvalCarbonCopy.ts

@@ -3,6 +3,7 @@ import { Op } from '@tachybase/database';
 
 import { COLLECTION_WORKFLOWS_NAME } from '../../common/constants';
 import { APPROVAL_STATUS } from '../constants';
+import { findUniqueObjects } from '../utils';
 
 export const approvalCarbonCopy = {
   async listCentralized(context, next) {
@@ -26,11 +27,14 @@ export const approvalCarbonCopy = {
 
     await actions.list(context, next);
 
-    // context.body = actions.list(context, next);
+    // NOTE: 进一步筛选, 筛选出同个用户下相同的approvalid, 只保留最新的一份.
-
+    if (context.body.rows) {
-    // context.body
+      context.body.rows = findUniqueObjects(
-    // actions.list(context, next);
+        context.body.rows,
-    // return
+        ['userId', 'approvalId'],
-    // context.body = userJob;
+        'createdAt',
+        (a: string, b: string) => new Date(a).getTime() - new Date(b).getTime(),
+      );
+    }
   },
 };

packages/plugins/@tachybase/plugin-workflow/src/server/features/approval/utils.ts

@@ -18,3 +18,28 @@ export async function jsonParse(expression, scope): Promise<any[]> {
     return [result];
   }
 }
+
+// 根据一系列唯一性字段, 去重对象数组
+// result = [{id:1,name,2,weight:10, time:1}]
+// 用法示例: findUniquifyObjects(result, ['name', 'weight'], 'time', (a, b) => a - b);
+export function findUniqueObjects(
+  sourceArray = [],
+  uniqueByArray: string[],
+  compareByKey = '',
+  compareByFunc = (a, b) => a - b,
+): any[] {
+  const uniqueMap = {};
+  let result = [];
+  sourceArray.forEach((obj) => {
+    const uniqueKey = uniqueByArray.map((field) => obj[field]).join('|');
+    const existingObj = uniqueMap[uniqueKey];
+
+    if (!existingObj || compareByFunc(obj[compareByKey], existingObj[compareByKey]) > 0) {
+      uniqueMap[uniqueKey] = obj;
+    }
+  });
+
+  result = [...Object.values(uniqueMap)];
+
+  return result;
+}