import { strict as assert } from "node:assert";
import { existsSync } from "node:fs";
import { fileURLToPath, pathToFileURL } from "node:url";
import { dirname, resolve } from "node:path";

const here = dirname(fileURLToPath(import.meta.url));
const repoRoot = resolve(here, "..");

const helloPath =
    process.env.HELLO_MJS ?? resolve(repoRoot, "out/build/wasm/bin/hello.mjs");

if (!existsSync(helloPath)) {
    console.error(
        `[wasm-smoke] hello.mjs not found at: ${helloPath}\n` +
            `Did you run \`cmake --build --preset wasm\` first?\n` +
            `Override with HELLO_MJS=/path/to/hello.mjs if your build dir differs.`,
    );
    process.exit(1);
}

const { default: createModule } = await import(pathToFileURL(helloPath).href);
const Module = await createModule();

const addResult = Module.ccall("add", "number", ["number", "number"], [2, 3]);
assert.equal(addResult, 5, `add(2, 3) returned ${addResult}, expected 5`);

const version = Module.ccall("hello_version", "number", [], []);
assert.equal(version, 1, `hello_version() returned ${version}, expected 1`);

const addWrapped = Module.cwrap("add", "number", ["number", "number"]);
assert.equal(addWrapped(40, 2), 42);

console.log("[wasm-smoke] OK — add(2,3)=5, hello_version()=1, cwrap add(40,2)=42");