import * as assets from 'aws-cdk-lib/aws-s3-assets'
const __dirname = dirname(fileURLToPath(import.meta.url));
const resolversDir = join(__dirname, 'data/resolvers');
const resolverFiles = readdirSync(resolversDir).filter(
  (f) => f.endsWith('.req.vtl') || f.endsWith('.res.vtl')
);
for (const file of resolverFiles) {
  const parts = file.replace('.req.vtl', '').replace('.res.vtl', '').split('.');
  const [typeName, fieldName] = parts;
  const isRequest = file.endsWith('.req.vtl');
  const functionId = `${typeName}${
    fieldName.charAt(0).toUpperCase() + fieldName.slice(1)
  }DataResolverFn`;
  const pipelineFunction =
    backend.data.resources.cfnResources.cfnFunctionConfigurations[functionId];
  if (pipelineFunction) {
    const templatePath = join(resolversDir, file);
    const vtlTemplate = new assets.Asset(backend.data.stack, `VTLTemplate-${file}`, {
      path: templatePath
    });
    if (isRequest) {
      pipelineFunction.requestMappingTemplateS3Location = vtlTemplate.s3ObjectUrl;
    } else {
      pipelineFunction.responseMappingTemplateS3Location = vtlTemplate.s3ObjectUrl;
    }
  }
}