新增 文件管理分页功能

Author: yumao233

src/routers/file_router.ts

@@ -42,8 +42,9 @@ routerApp.use((event, ctx, data, next) => {
 routerApp.on("file/list", (ctx, data) => {
   try {
     const fileManager = getFileManager(data.instanceUuid);
-    fileManager.cd(data.target);
-    const overview = fileManager.list();
+    const { page, pageSize, target } = data;
+    const overview = fileManager.list(page, pageSize);
+    fileManager.cd(target);
     protocol.response(ctx, overview);
   } catch (error) {
     protocol.responseError(ctx, error);

src/service/system_file.ts

@@ -69,8 +69,13 @@ export default class FileManager {
     this.cwd = path.normalize(path.join(this.cwd, dirName));
   }
 
-  list() {
-    const fileNames = fs.readdirSync(this.toAbsolutePath());
+  list(page: 0, pageSize = 40) {
+    if (pageSize > 100 || pageSize <= 0 || page < 0) throw new Error("Beyond the value limit");
+    let fileNames = fs.readdirSync(this.toAbsolutePath());
+    const total = fileNames.length;
+    const sliceStart = page * pageSize;
+    const sliceEnd = sliceStart + pageSize;
+    fileNames = fileNames.slice(sliceStart, sliceEnd);
     const files: IFile[] = [];
     const dirs: IFile[] = [];
     fileNames.forEach((name) => {
@@ -94,7 +99,12 @@ export default class FileManager {
     files.sort((a, b) => (a.name > b.name ? 1 : -1));
     dirs.sort((a, b) => (a.name > b.name ? 1 : -1));
     const resultList = dirs.concat(files);
-    return resultList;
+    return {
+      items: resultList,
+      page,
+      pageSize,
+      total
+    };
   }
 
   async readFile(fileName: string) {