refactor video files scanner

src/VideoFiles/Update/Scanner/video-files-scanner.service.ts

@@ -0,0 +1,69 @@
+import { Injectable } from '@nestjs/common';
+import { configService } from '../../../config/config.service';
+import { VideoFilesConfig } from '../../../config/video-files.config';
+import { spawn } from 'child_process';
+
+@Injectable()
+export class VideoFilesScannerService {
+  private readonly config: VideoFilesConfig;
+
+  constructor() {
+    this.config = configService.getVideoFilesConfig();
+  }
+
+  public async scanNewFiles(): Promise<
+    [paths: string[], pathToRelPath: Record<string, string>]
+  > {
+    let filesInFs = [];
+    let pathToRelPath = {}; //needed for title/season parsing
+    for (const videoFilesFolder of this.config.getVideoFilesFolders()) {
+      const [paths, relPaths] = await this.scanFolderForVideoFiles(
+        videoFilesFolder,
+      ).catch(() => [[], {}]);
+      filesInFs = filesInFs.concat(paths);
+      pathToRelPath = Object.assign(pathToRelPath, relPaths);
+    }
+
+    return [filesInFs, pathToRelPath];
+  }
+
+  private scanFolderForVideoFiles(
+    path: string,
+  ): Promise<[paths: string[], pathToRelPath: Record<string, string>]> {
+    return new Promise((resolve, reject) => {
+      if (path.slice(-1) !== '/') {
+        path += '/';
+      }
+
+      const findOptions = [path, '-name'].concat(
+        this.config.getVideoFilesExt().join(' -o -name ').split(' '),
+      );
+
+      const objCommand = spawn('find', findOptions);
+
+      let strList = '';
+
+      objCommand.stdout.on('data', (data) => {
+        strList = strList + data;
+      });
+
+      objCommand.stderr.on('data', (data) => {
+        reject(`stderr: ${data}`);
+      });
+
+      objCommand.on('close', (code) => {
+        if (code !== 0) {
+          reject(`rejected ${code}`);
+          return;
+        }
+        const arrList = strList.split('\n').filter((item) => item);
+        const objList = {};
+        for (const filePath of arrList) {
+          objList[filePath] = filePath.replace(path, '');
+        }
+
+        resolve([arrList, objList]);
+      });
+    });
+  }
+}