import test from "node:test";
import assert from "node:assert/strict";
import { readFileSync } from "node:fs";
import { dirname, resolve } from "node:path";
import { fileURLToPath } from "node:url";
import { execFileSync } from "node:child_process";

const packageRoot = resolve(dirname(fileURLToPath(import.meta.url)), "..");
const pkg = JSON.parse(readFileSync(resolve(packageRoot, "package.json"), "utf8"));

function getPackedPaths(cwd: string) {
  const out = execFileSync("npm", ["pack", "--dry-run", "--json"], {
    cwd,
    encoding: "utf8",
    stdio: ["ignore", "pipe", "pipe"],
    timeout: 30_000,
  });
  const parsed = JSON.parse(out);
  // npm pack --dry-run --json returns array with first entry containing files
  return (parsed[0]?.files ?? []).map((f: { path: string }) => f.path);
}

test("package.json exposes pi-web-search as a standalone pi package", () => {
  assert.equal(pkg.name, "pi-web-search");
  assert.equal(pkg.type, "module");
  assert.ok(Array.isArray(pkg.keywords));
  assert.ok(pkg.keywords.includes("pi-package"));
  assert.deepEqual(pkg.pi, {
    extensions: ["./index.ts"],
  });

  // description + repository exact match
  assert.equal(
    pkg.description,
    "Pi extension package that adds web_search and web_fetch tools backed by pluggable providers such as Exa and Tavily."
  );
  assert.deepEqual(pkg.repository, {
    type: "git",
    url: "https://gitea.rwiesner.com/pi/pi-web-search",
  });

  assert.equal(pkg.peerDependencies["@mariozechner/pi-coding-agent"], "*");
  assert.equal(pkg.peerDependencies["@mariozechner/pi-tui"], "*");
  assert.equal(pkg.peerDependencies["@sinclair/typebox"], "*");
  assert.ok("exa-js" in (pkg.dependencies ?? {}));
  assert.ok(!("@sinclair/typebox" in (pkg.dependencies ?? {})));
  assert.deepEqual(pkg.files, ["index.ts", "src"]);

  // ensure manifest does not bundle dependencies by default
  assert.equal(pkg.bundledDependencies, undefined);
});

test("README contains local and git install examples", () => {
  const readme = readFileSync(resolve(packageRoot, "README.md"), "utf8");
  assert.match(readme, /pi install \/absolute\/path\/to\/web-search/);
  assert.match(readme, /pi install https:\/\/gitea.rwiesner.com\/pi\/pi-web-search/);
});

test("npm pack includes expected assets and excludes .test.ts files", () => {
  const packedPaths = getPackedPaths(packageRoot);

  // meaningful pack assertions
  assert.ok(packedPaths.includes("index.ts"), "index.ts should be included in package");
  assert.ok(packedPaths.includes("src/runtime.ts"), "src/runtime.ts should be included in package");
  assert.ok(packedPaths.includes("src/tools/web-search.ts"), "src/tools/web-search.ts should be included in package");
  assert.ok(packedPaths.includes("src/tools/web-fetch.ts"), "src/tools/web-fetch.ts should be included in package");

  // no test files packed
  assert.deepEqual(packedPaths.filter((p) => p.endsWith(".test.ts")), []);
});