add db-wrapper package types

internal/app/db-wrapper/mssql.go

@@ -0,0 +1,38 @@
+package dbwrapper
+
+import (
+	"context"
+	"database/sql"
+)
+
+type mssqlDbWrapper struct {
+	db *sql.DB
+}
+
+func (wrapper *mssqlDbWrapper) Connect(ctx context.Context, dbUrl string) error { return nil }
+
+func (wrapper *mssqlDbWrapper) Close() error { return nil }
+
+func (wrapper *mssqlDbWrapper) Exec(ctx context.Context, query string, args ...any) (ExecResult, error) {
+	result, execErr := wrapper.db.ExecContext(ctx, query, args...)
+	if execErr != nil {
+		return ExecResult{}, execErr
+	}
+
+	affectedRows, err := result.RowsAffected()
+	if err != nil {
+		return ExecResult{}, err
+	}
+
+	return ExecResult{
+		AffectedRows: affectedRows,
+	}, nil
+}
+
+func (wrapper *mssqlDbWrapper) Query(ctx context.Context, query string, args ...any) (RowsResult, error) {
+	return nil, nil
+}
+
+func (wrapper *mssqlDbWrapper) SaveMassive(ctx context.Context, schema string, table string, columnNames []string, rows [][]any) (int64, error) {
+	return 0, nil
+}