import {
  CdcColumn,
  CdcTable,
} from '@dadosfera/protospack-v2/dist/lib/Input/interfaces/entities';

/** What a caller knows about a CDC table before it is stored. The source
 *  table is named `table_name` on the platform-facing bodies and `name` on
 *  the create DTO (CdcTableReq); either works — deriving one from the other
 *  happens only here. */
export interface CdcTableInput {
  // Optional on the create DTO (CdcTableReq); the platform validates it.
  table_schema?: string;
  table_name?: string;
  name?: string;
  primary_keys?: string[];
  iceberg_table_name?: string;
  iceberg_qualify_table_name?: string;
  columns?: CdcColumn[];
  column_exclude_list?: string[];
}

/**
 * The only place maestro builds a protospack `CdcTable`.
 *
 * `name` is the identity key shared with batch `NewTable` (in-factory keys
 * update/soft-delete on it) and the proto keeps it required, so it mirrors
 * `table_name` here and nowhere else. Follow-up (protospack): make `name`
 * optional and let in-factory be its sole writer (it already backfills
 * `name ?? table_name`).
 */
export function toCdcTable(table: CdcTableInput): CdcTable {
  const tableName = table.table_name ?? table.name;
  return {
    table_schema: table.table_schema,
    table_name: tableName,
    name: tableName,
    primary_keys: table.primary_keys ?? [],
    iceberg_table_name: table.iceberg_table_name,
    iceberg_qualify_table_name: table.iceberg_qualify_table_name,
    columns: table.columns ?? [],
    column_exclude_list: table.column_exclude_list ?? [],
  };
}