import { assertEquals, assertThrows } from "@std/assert";

import { commandId, readKeyPress } from "../driver-commands.ts";
import { runDenoWebTest } from "./utils.ts";

Deno.test("a test presses keys the browser treats as the person's", async function () {
  const run = await runDenoWebTest("commands-project");

  for (
    const name of [
      "a pressed Tab moves focus, and Shift\\+Tab moves it back",
      "a dispatched Tab moves nothing",
      "a press settles once the browser has handled all of it",
    ]
  ) {
    run.assert(
      new RegExp(`${name} \\.\\.\\. .*ok`).test(run.stdoutText),
      `${name} passes`,
    );
  }
  run.assert(
    /an unknown key is refused \.\.\. .*FAILED/.test(run.stdoutText),
    "an unknown key fails its test",
  );
  run.assert(
    /an unknown modifier is refused \.\.\. .*FAILED/.test(run.stdoutText),
    "an unknown modifier fails its test",
  );
  run.assert(
    /`Space` is not a key a test may press/.test(run.stdoutText),
    "the failure names the key",
  );
  run.assert(
    /`Hyper` is not a key a test may hold down/.test(run.stdoutText),
    "the failure names the modifier",
  );
  run.assert(/3 passed \| 2 failed/.test(run.stdoutText), "summary");
});

Deno.test("the driver reads a command's id only where it is a number", function () {
  assertEquals(commandId({ id: 3, press: "Tab" }), 3);
  for (const parsed of [{ id: "3" }, { press: "Tab" }, null, "3", undefined]) {
    assertEquals(commandId(parsed), undefined);
  }
});

Deno.test("the driver reads a key press, and refuses a key it does not press", function () {
  assertEquals(readKeyPress({ press: " " }), { press: " ", modifiers: [] });
  assertEquals(
    readKeyPress({ press: "Tab", modifiers: ["Shift", "Alt"] }),
    { press: "Tab", modifiers: ["Shift", "Alt"] },
  );
  assertThrows(
    () => readKeyPress({ press: "Space" }),
    Error,
    "`Space` is not a key a test may press",
  );
  assertThrows(
    () => readKeyPress({}),
    Error,
    "`undefined` is not a key a test may press",
  );
  assertThrows(
    () => readKeyPress({ press: "Tab", modifiers: ["Hyper"] }),
    Error,
    "`Hyper` is not a key a test may hold down",
  );
  assertThrows(
    () => readKeyPress({ press: "Tab", modifiers: "Shift" }),
    Error,
    "modifiers must be an array",
  );
});