import { expect, test } from "bun:test";
import { parse } from "@wrnexus/syntax";
import { generate } from "../src/codegen.ts";

function serverModule(inner: string): string {
  return generate(
    parse(`page Repro {
  ssr {
${inner}
  }

  view { <main><p api="ssrUsers">loading</p></main> }
}
`),
  );
}

test("a sectioned ssr block binds the payload to data", () => {
  const generated = serverModule(`    api ssrUsers GET /api/users {
      response {
        return data.users.length
      }
    }`);

  expect(generated).toContain("data.users.length");
});

test("a legacy ssr block is unchanged", () => {
  const generated = serverModule(`    api ssrUsers GET /api/users {
      return users.length
    }`);

  expect(generated).toContain("users.length");
});

test("an ssr block with an error section emits the error body and binds status/message/data", () => {
  const generated = serverModule(`    api ssrUsers GET /api/users {
      response {
        return data.users.length
      }
      error {
        return message + status + data
      }
    }`);

  expect(generated).toContain('"errorBody"');
  expect(generated).toContain("return message + status + data");
  expect(generated).toContain("const status = $status");
  expect(generated).toContain("const message = $message");
  expect(generated).toContain("const data = $data");
  expect(generated).toContain("__wrnexusEvalError");
});

test("an ssr block without an error section emits no catch entry for that binding", () => {
  const generated = serverModule(`    api ssrUsers GET /api/users {
      response {
        return data.users.length
      }
    }`);

  expect(generated).not.toContain('"errorBody"');
});