Merged in feature/doc_import (pull request #177)

integration of background processor

* integration part 1

* feature working

* fix mimetype issue

internal/database/repository/batch.sql.go

@@ -304,6 +304,69 @@ func (q *Queries) GetDocumentsByBatchId(ctx context.Context, batchID *uuid.UUID)
 	return items, nil
 }
 
+const getUnprocessedBatches = `-- name: GetUnprocessedBatches :many
+SELECT id, client_id, original_filename, total_documents, 
+       processed_documents, failed_documents, invalid_type_documents,
+       status, progress_percent, created_at, completed_at
+FROM batch_uploads 
+WHERE status = 'processing'
+ORDER BY created_at ASC
+`
+
+type GetUnprocessedBatchesRow struct {
+	ID                   uuid.UUID        `db:"id"`
+	ClientID             string           `db:"client_id"`
+	OriginalFilename     string           `db:"original_filename"`
+	TotalDocuments       int32            `db:"total_documents"`
+	ProcessedDocuments   int32            `db:"processed_documents"`
+	FailedDocuments      int32            `db:"failed_documents"`
+	InvalidTypeDocuments int32            `db:"invalid_type_documents"`
+	Status               BatchStatus      `db:"status"`
+	ProgressPercent      int32            `db:"progress_percent"`
+	CreatedAt            pgtype.Timestamp `db:"created_at"`
+	CompletedAt          pgtype.Timestamp `db:"completed_at"`
+}
+
+// GetUnprocessedBatches
+//
+//	SELECT id, client_id, original_filename, total_documents,
+//	       processed_documents, failed_documents, invalid_type_documents,
+//	       status, progress_percent, created_at, completed_at
+//	FROM batch_uploads
+//	WHERE status = 'processing'
+//	ORDER BY created_at ASC
+func (q *Queries) GetUnprocessedBatches(ctx context.Context) ([]*GetUnprocessedBatchesRow, error) {
+	rows, err := q.db.Query(ctx, getUnprocessedBatches)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+	items := []*GetUnprocessedBatchesRow{}
+	for rows.Next() {
+		var i GetUnprocessedBatchesRow
+		if err := rows.Scan(
+			&i.ID,
+			&i.ClientID,
+			&i.OriginalFilename,
+			&i.TotalDocuments,
+			&i.ProcessedDocuments,
+			&i.FailedDocuments,
+			&i.InvalidTypeDocuments,
+			&i.Status,
+			&i.ProgressPercent,
+			&i.CreatedAt,
+			&i.CompletedAt,
+		); err != nil {
+			return nil, err
+		}
+		items = append(items, &i)
+	}
+	if err := rows.Err(); err != nil {
+		return nil, err
+	}
+	return items, nil
+}
+
 const listBatchUploads = `-- name: ListBatchUploads :many
 SELECT id, client_id, original_filename, total_documents, processed_documents, 
        failed_documents, invalid_type_documents, status, progress_percent,