import test from "node:test";
import assert from "node:assert/strict";
import { chmod, mkdtemp, readFile, rm, writeFile } from "node:fs/promises";
import os from "node:os";
import path from "node:path";
import { fileURLToPath } from "node:url";
import { spawnSync } from "node:child_process";

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

test("codex app-server protocol snapshot script records schema, help and method inventory", async () => {
  const runtimeRoot = await mkdtemp(path.join(os.tmpdir(), "boss-codex-protocol-snapshot-"));
  const fakeBin = path.join(runtimeRoot, "codex");
  const outDir = path.join(runtimeRoot, "snapshot");
  await writeFile(
    fakeBin,
    `#!/usr/bin/env node
const fs = require("node:fs");
const path = require("node:path");
const args = process.argv.slice(2);
function writeGenerated(out, name, content) {
  fs.mkdirSync(out, { recursive: true });
  fs.writeFileSync(path.join(out, name), content);
}
if (args.includes("--version")) {
  console.log("codex-cli 0.135.0-alpha.1");
  process.exit(0);
}
if (args[0] === "app-server" && args.includes("--help")) {
  console.log("Usage: codex app-server [OPTIONS]");
  console.log("--listen <URL> stdio:// unix:// ws://IP:PORT off");
  process.exit(0);
}
if (args[0] === "app-server" && args[1] === "generate-json-schema") {
  const out = args[args.indexOf("--out") + 1];
  writeGenerated(out, "codex_app_server_protocol.schemas.json", JSON.stringify({
    anyOf: [
      { properties: { method: { const: "thread/start" } } },
      { properties: { method: { const: "thread/inject_items" } } },
      { properties: { method: { const: "skills/extraRoots/set" } } },
      { properties: { method: { const: "hooks/list" } } },
      { properties: { method: { const: "turn/start" } } }
    ]
  }, null, 2));
  process.exit(0);
}
if (args[0] === "app-server" && args[1] === "generate-ts") {
  const out = args[args.indexOf("--out") + 1];
  writeGenerated(out, "ClientRequest.ts", 'export type ClientRequest = { "method": "thread/start" } | { "method": "skills/extraRoots/set" } | { "method": "hooks/list" } | { "method": "turn/start" };\\n');
  process.exit(0);
}
console.error("unexpected args " + args.join(" "));
process.exit(2);
`,
    "utf8",
  );
  await chmod(fakeBin, 0o755);

  try {
    const result = spawnSync(
      process.execPath,
      [
        "scripts/codex-app-server-protocol-snapshot.mjs",
        "--codex-bin",
        fakeBin,
        "--out-dir",
        outDir,
      ],
      {
        cwd: repoRoot,
        encoding: "utf8",
      },
    );

    assert.equal(result.status, 0, result.stderr);
    const manifest = JSON.parse(await readFile(path.join(outDir, "0.135.0-alpha.1", "manifest.json"), "utf8"));
    assert.equal(manifest.codexVersion, "0.135.0-alpha.1");
    assert.equal(manifest.supports.wsTransport, true);
    assert.equal(manifest.supports.unixTransport, true);
    assert.equal(manifest.supports.threadInjectItems, true);
    assert.equal(manifest.supports.skillsExtraRoots, true);
    assert.equal(manifest.supports.hooksList, true);
    assert.deepEqual(manifest.methods, [
      "hooks/list",
      "skills/extraRoots/set",
      "thread/inject_items",
      "thread/start",
      "turn/start",
    ]);
    assert.match(
      await readFile(path.join(outDir, "0.135.0-alpha.1", "app-server-help.txt"), "utf8"),
      /ws:\/\/IP:PORT/,
    );
  } finally {
    await rm(runtimeRoot, { recursive: true, force: true });
  }
});