diff --git a/preprocessor/folder/database.go b/preprocessor/folder/database.go
index 4f42bf2..eec0b96 100644
--- a/preprocessor/folder/database.go
+++ b/preprocessor/folder/database.go
@@ -45,6 +45,7 @@ func initDbTableIfNotExists(connPool *pgxpool.Pool) error {
 	return nil
 }
 
+// ProjectQueryResult represents the result of a project metadata query
 type ProjectQueryResult struct {
 	ProjectId        *string
 	ProjectPath      *string
@@ -53,6 +54,7 @@ type ProjectQueryResult struct {
 	AuthorIdentifier *string
 }
 
+// queryAllProjects queries all project metadata from the database
 func queryAllProjects(connPool *pgxpool.Pool) ([]ProjectQueryResult, error) {
 	var result []ProjectQueryResult
 	rows, err := connPool.Query(
diff --git a/preprocessor/folder/database_schema.go b/preprocessor/folder/database_schema.go
index 29fdd9d..53a7a74 100644
--- a/preprocessor/folder/database_schema.go
+++ b/preprocessor/folder/database_schema.go
@@ -16,6 +16,7 @@ var FILE_STATUS_TABLE = `CREATE TABLE IF NOT EXISTS file_status (
 	CREATE INDEX IF NOT EXISTS idx_file_status_status ON file_status (status);
 `
 
+// schema for project_metadata table
 var PROJECT_METADATA_TABLE = `CREATE TABLE IF NOT EXISTS project_metadata (
 	id BIGSERIAL PRIMARY KEY,
 	project_id TEXT UNIQUE NOT NULL,
diff --git a/preprocessor/folder/folder.go b/preprocessor/folder/folder.go
index 63eb9e4..7787c27 100644
--- a/preprocessor/folder/folder.go
+++ b/preprocessor/folder/folder.go
@@ -36,6 +36,7 @@ func scanSyncDirectory(subPath string) (fileList []string, dirList []string, err
 	return fileList, dirList, err
 }
 
+// watchLoop watches for file changes in a directory and checks if it should be handled
 func watchLoop(w *fsnotify.Watcher, pgPool *pgxpool.Pool, dirPathToProject map[string]ProjectQueryResult) {
 	for {
 		select {