Apex Class for Content Document Table Component | getDocuments

ContentDocumentController.cls

  @AuraEnabled(cacheable=true)
  public static String getDocuments(String library, String folder, Id recordId) {
    try {
      String folderName = folder != null ? folder : recordId.getSObjectType().getDescribe().getName();

      // get workspace library
      ContentWorkspace cw = [
        SELECT Id, Name
        FROM ContentWorkspace
        WHERE Name LIKE :library
        WITH USER_MODE
        LIMIT 1
      ];

      // get specific folder from library based on object api name
      ContentFolder cf = [
        SELECT Id, Name
        FROM ContentFolder
        WHERE ParentContentFolder.Name = :cw.Id AND Name = :folderName
        WITH USER_MODE
        LIMIT 1
      ];

      // get all files that are in the folder
      List<Id> cfmIdList = new List<Id>();
      for (ContentFolderMember cfm : [
        SELECT Id, ParentContentFolderId, ParentContentFolder.Name, ChildRecordId, ChildRecord.title
        FROM ContentFolderMember
        WHERE ParentContentFolderId = :cf.Id
        WITH USER_MODE
      ]) {
        cfmIdList.add(cfm.ChildRecordId);
      }

      return JSON.serialize(
        [
          SELECT Id, Title, Description, FileExtension, FileType, ContentSize, CreatedDate
          FROM ContentDocument
          WHERE Id IN :cfmIdList
        ]
      );
    } catch (Exception e) {
      System.debug('The following exception has occurred: ' + e.getMessage());
      return null;
    }
  }