[api] only return files not part of a dataset when listing a users files

sda/cmd/api/api_test.go

@@ -1193,5 +1193,5 @@ func (suite *TestSuite) TestListUserFiles() {
 	files := []database.SubmissionFileInfo{}
 	err = json.NewDecoder(okResponse.Body).Decode(&files)
 	assert.NoError(suite.T(), err, "failed to list users from DB")
-	assert.Equal(suite.T(), 5, len(files))
+	assert.Equal(suite.T(), 2, len(files))
 }

sda/internal/database/db_functions.go

@@ -635,14 +635,9 @@ func (dbs *SDAdb) getUserFiles(userID string) ([]*SubmissionFileInfo, error) {
 	db := dbs.DB
 
 	// select all files of the user, each one annotated with its latest event
-	const query = "SELECT f.submission_file_path, e.event, f.created_at " +
-		"FROM sda.files f " +
-		"LEFT JOIN ( " +
-		"SELECT DISTINCT ON (file_id) file_id, started_at, event " +
-		"FROM sda.file_event_log " +
-		"ORDER BY file_id, started_at DESC" +
-		") e ON f.id = e.file_id " +
-		"WHERE f.submission_user = $1; "
+	const query = "SELECT f.submission_file_path, e.event, f.created_at FROM sda.files f " +
+	"LEFT JOIN (SELECT DISTINCT ON (file_id) file_id, started_at, event FROM sda.file_event_log ORDER BY file_id, started_at DESC) e ON f.id = e.file_id WHERE f.submission_user = $1 " +
+	"AND f.id NOT IN (SELECT f.id FROM sda.files f RIGHT JOIN sda.file_dataset d ON f.id = d.file_id); "
 
 	// nolint:rowserrcheck
 	rows, err := db.Query(query, userID)