/**
 * @file websocket-pty-size.test.js
 * @description Regression test for issue #33: the `/ws-pty/:runId` attach
 * spawns `tmux attach-session` at the size the CLIENT reports in the attach
 * URL, not a hardcoded 80×24. tmux sizes the window to the newest client, so
 * attaching at 80 columns and fixing it from the first `resize` message made
 * `claude` redraw its whole UI at 80 columns — wreckage that stays in the
 * scrollback and shows up as torn left-margin fragments when scrolling back.
 * @author Nguyễn Ngọc Trí Vĩ <vinnt@smartgift.vn>
 */
const { describe, it } = require("node:test");
const assert = require("node:assert/strict");
const { sizeFromQuery } = require("../websocket");

const query = (search) => new URL(`http://x/ws-pty/agenthub-lane-1${search}`).searchParams;

describe("sizeFromQuery — the attach carries the client's real size", () => {
  it("reads the terminal's own cols/rows", () => {
    assert.deepEqual(sizeFromQuery(query("?cols=226&rows=29")), { cols: 226, rows: 29 });
  });

  // No size (a terminal on a hidden tab) stays no size: the attach then takes
  // the window's own, never a default that would resize the pane.
  const none = { cols: undefined, rows: undefined };

  it("names no size when the client named none", () => {
    assert.deepEqual(sizeFromQuery(query("")), none);
  });

  it("refuses anything out of bounds — this number reaches an ioctl", () => {
    assert.deepEqual(sizeFromQuery(query("?cols=0&rows=-5")), none);
    assert.deepEqual(sizeFromQuery(query("?cols=99999&rows=99999")), none);
    assert.deepEqual(sizeFromQuery(query("?cols=abc&rows=12")), none);
  });
});