fix: move find files to the factory

Author: GeekaN2

src/models/releasesFactory.ts

@@ -1,6 +1,42 @@
 import type { Collection, Db, ObjectId } from 'mongodb';
 import type { ReleaseDBScheme } from '@hawk.so/types';
 
+/**
+ * Interface representing how release files are stored in the DB
+ */
+export interface ReleaseFileDBScheme {
+  /**
+   * File's id
+   */
+  _id: ObjectId;
+
+  /**
+   * File length in bytes
+   */
+  length: number;
+
+  /**
+   * File upload date
+   */
+  uploadDate: Date;
+
+  /**
+   * File chunk size
+   */
+  chunkSize: number;
+
+  /**
+   * File map name
+   */
+  filename: string;
+
+  /**
+   * File MD5 hash
+   */
+  md5: string;
+}
+
+
 /**
  * ReleasesFactory
  * Helper for accessing releases collection
@@ -10,13 +46,15 @@ export default class ReleasesFactory {
    * DataBase collection to work with
    */
   private readonly collection: Collection<ReleaseDBScheme>;
+  private readonly filesCollection: Collection<ReleaseFileDBScheme>;
 
   /**
    * Creates releases factory instance
    * @param dbConnection - connection to Events DB
    */
   constructor(dbConnection: Db) {
     this.collection = dbConnection.collection<ReleaseDBScheme>('releases');
+    this.filesCollection = dbConnection.collection<ReleaseFileDBScheme>('releases.files');
   }
 
   /**
@@ -49,4 +87,13 @@ export default class ReleasesFactory {
 
     return doc;
   }
+
+  /**
+   * Find files by release id
+   * @param releaseId - release id
+   * @returns files
+   */
+  public async findFilesByReleaseId(releaseId: string): Promise<ReleaseFileDBScheme[]> {
+    return this.filesCollection.find({ releaseId }).toArray();
+  }
 }

src/resolvers/project.js

@@ -579,24 +579,16 @@ module.exports = {
       // If there are files to enrich, try to get their metadata
       if (enrichedFiles.length > 0) {
         try {
-          const filesColl = mongo.databases.events.collection('releases.files');
-
           const fileIds = [ ...new Set(
             enrichedFiles
               .filter(file => file && typeof file === 'object' && file._id)
               .map(file => String(file._id))
           ) ].map(id => new ObjectId(id));
 
           if (fileIds.length > 0) {
-            const filesInfo = await filesColl.find(
-              { _id: { $in: fileIds } },
-              {
-                projection: {
-                  length: 1,
-                  uploadDate: 1,
-                },
-              }
-            ).toArray();
+            const filesInfo = await factories.releasesFactory.findFilesByReleaseId(
+              releaseDoc._id.toString()
+            );
 
             const metaById = new Map(
               filesInfo.map(fileInfo => [String(fileInfo._id), {