Add GUID support for route params

[illunix]

fixes #1113

[baywet]

Thanks for the contribution.
It needs further changes and unit tests.
I'll reply shortly to the questions on the issue to provide guidance

[baywet]

This if statement is for the request body, it's good to fix the issue here as well as people will eventually run into it, but it's not going to address the initial issue.

[yasaichi]

@illunix
I think there are 2 possible ways to convert a Guid value in path parameters to a string:

Inside RequestInformation.URL

This getter is called just before StdUriTemplate.expand. Using the method seems better to me.

public get URL(): string {
  const rawUrl = this.pathParameters[
    RequestInformation.raw_url_key
  ] as string;
  if (this.uri) {
    ...
  } else {
    const data = {} as { [key: string]: unknown };
    for (const key in this.queryParameters) {
      if (this.queryParameters[key] !== null && this.queryParameters[key] !== undefined) {
        data[key] = this.queryParameters[key];
      }
    }
    for (const key in this.pathParameters) {
      if (this.pathParameters[key]) {
        data[key] = this.pathParameters[key]; // <- here
      }
    }
    return StdUriTemplate.expand(this.urlTemplate, data);
  }
}

Inside apiClientProxifier

This function is called when you write like apiClient.foos.byId(fooId).

export function apiClientProxifier<T extends object>(
  requestAdapter: RequestAdapter,
  pathParameters: Record<string, unknown>,
  navigationMetadata?: Record<string, NavigationMetadata>,
  requestsMetadata?: RequestsMetadata,
): T {
  if (!requestAdapter) throw new Error("requestAdapter cannot be undefined");
  if (!pathParameters) throw new Error("pathParameters cannot be undefined");
  return new Proxy({} as T, {
    get(target, property) {
      ...
      if (navigationMetadata) {
        const navigationCandidate = navigationMetadata[name];
        if (navigationCandidate) {
          ...
          return (...argArray: any[]) => {
            // navigation method like indexers or multiple path parameters
            const downWardPathParameters = getPathParameters(pathParameters);
            if (
              navigationCandidate.pathParametersMappings &&
              navigationCandidate.pathParametersMappings.length > 0
            ) {
              for (let i = 0; i < argArray.length; i++) {
                const element = argArray[i];
                downWardPathParameters[
                  navigationCandidate.pathParametersMappings[i]
                ] = element; // <- here
              }
            }
            return apiClientProxifier(
              requestAdapter,
              downWardPathParameters,
              navigationCandidate.navigationMetadata,
              navigationCandidate.requestsMetadata,
            );
          };
        }
        throw new Error(
          `couldn't find navigation property ${name} data: ${JSON.stringify(
            navigationMetadata,
          )}`,
        );
      }
    },
  });
}

I hope that this will help you. Thanks