// What the bash task list means: which tasks are live, the words for a state,
// the order, and the count. Run by `npm test`, which imports the `.ts` module
// as it is.
import assert from "node:assert/strict";
import { test } from "node:test";
import {
  isLive,
  runningTasksLabel,
  sortTasks,
  stateWord,
} from "../src/agent/terminal/bash-tasks.ts";

const task = (name, state, created, exit = null) => ({
  task: name,
  state,
  cmd: "make",
  created_unix: created,
  since_unix: created + 1,
  exit,
});

test("only a queued or running task, still reporting, is live", () => {
  assert.equal(isLive(task("a", "pending", 1)), true);
  assert.equal(isLive(task("a", "running", 1)), true);
  for (const s of ["stale", "done", "timed_out", "interrupted", "killed"]) {
    assert.equal(isLive(task("a", s, 1)), false, s);
  }
});

test("the state word says what the age counts from", () => {
  assert.equal(stateWord(task("a", "pending", 1)), "queued");
  assert.equal(stateWord(task("a", "running", 1)), "started");
  assert.equal(stateWord(task("a", "stale", 1)), "stopped reporting");
  assert.equal(stateWord(task("a", "done", 1, 0)), "finished");
  assert.equal(stateWord(task("a", "done", 1)), "finished");
  assert.equal(stateWord(task("a", "done", 1, 2)), "exited 2");
  assert.equal(stateWord(task("a", "timed_out", 1)), "timed out");
  assert.equal(stateWord(task("a", "interrupted", 1)), "interrupted");
  assert.equal(stateWord(task("a", "killed", 1)), "killed");
});

test("live tasks come first, each group newest first, ties by id", () => {
  const list = [
    task("old-done", "done", 10),
    task("new-done", "done", 50),
    task("old-run", "running", 20),
    task("new-run", "running", 60),
    task("b", "running", 40),
    task("a", "running", 40),
  ];
  assert.deepEqual(
    sortTasks(list).map((t) => t.task),
    ["new-run", "a", "b", "old-run", "new-done", "old-done"],
  );
});

test("the count names the live tasks only", () => {
  assert.equal(runningTasksLabel([]), "0 running tasks");
  assert.equal(runningTasksLabel([task("a", "running", 1)]), "1 running task");
  assert.equal(
    runningTasksLabel([
      task("a", "running", 1),
      task("b", "pending", 1),
      task("c", "done", 1),
      task("d", "stale", 1),
    ]),
    "2 running tasks",
  );
});