/**
 * @file Tests the `tmux` row of scripts/plugin-doctor.js — the check that tells
 * an install its browser run console cannot work, because every run the
 * dashboard starts is a tmux session (server/lib/tmux.js). The row must WARN
 * and never FAIL: sessions, analytics, lanes and the CLI all work without the
 * binary, so failing a doctor run over it would cry wolf. A tmux older than 3.7
 * (no pane scrollbars) also warns, as does a new binary still talking to an
 * older running server. tmux is faked through the module's own exec seam, so
 * the test never depends on the host having it.
 * @author Nguyễn Ngọc Trí Vĩ <vinnt@smartgift.vn>
 */

const { describe, it, after } = require("node:test");
const assert = require("node:assert/strict");
const fs = require("node:fs");
const os = require("node:os");
const path = require("node:path");

const TMP_HOME = fs.mkdtempSync(path.join(os.tmpdir(), "agenthub-doctor-tmux-"));
process.env.CLAUDE_HOME = TMP_HOME;

const tmux = require("../lib/tmux");
const { diagnose } = require("../../scripts/plugin-doctor");

after(() => {
  tmux.__reset();
  fs.rmSync(TMP_HOME, { recursive: true, force: true });
  delete process.env.CLAUDE_HOME;
});

/** Fake the tmux binary (null = absent) and its running server (null = none),
 *  then read back the row. */
function rowWithTmux(client, server = null) {
  tmux.__setExecImpl((args) => {
    if (!client) throw new Error("spawnSync tmux ENOENT");
    if (args[0] === "-V") return `tmux ${client}\n`;
    if (!server) throw new Error("no server running");
    return `${server}\n`;
  });
  const row = diagnose().find((r) => r.label === "tmux");
  assert.ok(row, "the doctor must always emit a tmux row");
  return row;
}

describe("plugin-doctor: tmux row", () => {
  it("warns, never fails, when tmux is not on PATH", () => {
    const row = rowWithTmux(null);

    assert.equal(row.level, "warn", "a missing tmux must not fail the doctor run");
    assert.match(row.detail, /workspace shell/, "the reader needs to know WHAT breaks");
    assert.match(row.detail, /install/i, "and how to fix it");
  });

  it("passes when tmux has pane scrollbars (3.7+)", () => {
    assert.equal(rowWithTmux("3.7c").level, "ok");
    assert.equal(rowWithTmux("next-3.8", "3.8-rc3").level, "ok");
  });

  it("warns, with the upgrade path, when tmux is older than 3.7", () => {
    const row = rowWithTmux("3.4", "3.4");

    assert.equal(row.level, "warn");
    assert.match(row.detail, /3\.7/);
    assert.match(row.detail, /brew upgrade tmux/);
  });

  it("warns when a new tmux is still talking to an older running server", () => {
    const row = rowWithTmux("3.7c", "3.4");

    assert.equal(row.level, "warn");
    assert.match(row.detail, /server is 3\.4/);
  });
});