import { SSMClient, GetParameterCommand } from '@aws-sdk/client-ssm';
import { logger } from 'web-shared/src/logger';

const ssm = new SSMClient(
  !process.env.LAMBDA_TASK_ROOT
    ? { region: 'ap-southeast-2', profile: 'dev' }
    : { region: 'ap-southeast-2' },
);

const parameterCache: Record<string, string> = {};

export const getParameter = async (
  parameterName: string,
  decrypt?: boolean,
): Promise<string> => {
  try {
    if (parameterCache[parameterName]) {
      return parameterCache[parameterName];
    }

    const result = await ssm.send(
      new GetParameterCommand({
        Name: parameterName,
        WithDecryption: decrypt,
      }),
    );

    parameterCache[parameterName] = result.Parameter?.Value || '';
    return parameterCache[parameterName];
  } catch (err) {
    logger.error(
      { err, parameter: parameterName },
      'Failed to fetch parameter',
    );
    throw new Error('Failed to fetch parameter');
  }
};