import { Notifier, Ledger, JSON } from '@klave/sdk';
import { FetchInput, FetchOutput, StoreInput, StoreOutput, ErrorMessage } from './types';

const myTableName = "my_storage_table";

/**
 * @query
 * @param {FetchInput} input - A parsed input argument
 */
export function fetchValue(input: FetchInput): void {

    let value = Ledger.getTable(myTableName).get(input.key);
    if (value.length === 0) {
        Notifier.sendJson<ErrorMessage>({
            success: false,
            message: `key '${input.key}' not found in table`
        });
    } else {
        Notifier.sendJson<FetchOutput>({
            success: true,
            value
        });
    }
}

/**
 * @transaction
 * @param {StoreInput} input - A parsed input argument
 */
export function storeValue(input: StoreInput): void {

    if (input.key && input.value) {
        Ledger.getTable(myTableName).set(input.key, input.value);
        Notifier.sendJson<StoreOutput>({
            success: true
        });
        return;
    }

    Notifier.sendJson<ErrorMessage>({
        success: false,
        message: `Missing value arguments`
    });
}