Function resolveRequestHost

packages/plugins/openapi/src/sdk/invoke.ts:1271–1293

(
  servers: readonly ServerInfo[],
  serverArg: unknown,
  baseUrl: string,
)

// Connection `baseUrl` wins; otherwise the call's chosen server (`server.url`, or
// the first) resolved with its `{variables}` (call values, else spec defaults).
const resolveRequestHost = (
  servers: readonly ServerInfo[],
  serverArg: unknown,
  baseUrl: string,
): string => {
  if (baseUrl) return baseUrl;
  if (servers.length === 0) return "";

  const arg = (
    typeof serverArg === "object" && serverArg !== null && !Array.isArray(serverArg)
      ? serverArg
      : {}
  ) as { url?: unknown; variables?: unknown };
  const chosen = servers.find((server) => server.url === arg.url) ?? servers[0]!;

  const overrides: Record<string, string> = {};
  if (typeof arg.variables === "object" && arg.variables !== null) {
    for (const [name, value] of Object.entries(arg.variables as Record<string, unknown>)) {
      if (value != null && value !== "") overrides[name] = String(value);
    }
  }
  return resolveServerUrl(chosen.url, Option.getOrUndefined(chosen.variables), overrides);
};

const baseUrlForPathTemplate = (baseUrl: string, pathTemplate: string): string => {
  if (!baseUrl || !pathTemplate.startsWith("/upload/") || !URL.canParse(baseUrl)) return baseUrl;