export function cloudFormationDeployment()

in src/riff-raff-yaml-file/deployments/cloudformation.ts [5:49]

• 37 lines of code
• 3 McCabe index (conditional complexity)

export function cloudFormationDeployment(
  cdkStacks: CdkStacksDifferingOnlyByStage,
  dependencies: RiffRaffDeployment[],
  contentDirectory: string,
): RiffRaffDeployment {
  // The stacks in `cdkStacks` only differ by stage, so we can just use the first item in the list for key information.
  const [cdkStack] = cdkStacks;

  if (!cdkStack) {
    throw new Error("Unable to produce a working riff-raff.yaml file; there are no stacks!");
  }

  const {
    region,
    stack,
    constructor: { name },
  } = cdkStack;

  // TODO remove `lodash.kebabcase` dep as it's not that much code to kebab-ise a string...
  const kebabClassName = name.replace(/([a-z])([A-Z])/g, "$1-$2").toLowerCase();

  const templateStagePaths = cdkStacks.reduce(
    (acc, { stage, templateFile }) => ({
      ...acc,
      [stage]: templateFile,
    }),
    {},
  );

  return {
    name: ["cfn", region, stack, kebabClassName].join("-"),
    props: {
      type: "cloud-formation",
      regions: new Set([region]),
      stacks: new Set([stack]),
      app: kebabClassName,
      contentDirectory,
      parameters: {
        templateStagePaths,
      },
      // only add the `dependencies` property if there are some
      ...(dependencies.length > 0 && { dependencies: dependencies.map(({ name }) => name) }),
    },
  };
}