import { test, expect, type Page } from "@playwright/test";
import { existsSync, readFileSync } from "node:fs";
import { resolve } from "node:path";

const romPath = resolve(
  process.env.CRYSTAL_ROM_PATH ??
    "Pokemon - Crystal Version (UE) (V1.1) [C][!].gbc",
);
test.beforeEach(() =>
  test.skip(!existsSync(romPath), "Requires the local user ROM."),
);

async function start(page: Page) {
  await page.clock.install({ time: new Date("2026-09-25T14:37:00") });
  await page.goto("/");
  await page.locator("#rom-file").setInputFiles(romPath);
  await expect(page.locator("#status")).toContainText("verified");
  await page.clock.pauseAt(new Date("2026-09-25T14:37:05"));
  await page.locator("#play").click();
}
/** Press A until the dialogue shows `text`. */
async function advanceTo(page: Page, text: string) {
  const dialogue = page.locator("#dialogue-text");
  for (let guard = 0; guard < 40; guard++) {
    if ((await dialogue.textContent())?.includes(text)) return;
    await page.keyboard.press("KeyX");
  }
  await expect(dialogue).toContainText(text);
}

test("a new game asks for gender, the clock and a name before the bedroom", async ({
  page,
}) => {
  const errors: string[] = [];
  page.on("pageerror", (error) => errors.push(error.message));
  await start(page);
  const screen = page.locator("#game-screen"),
    choice = page.locator("#dialogue-choice"),
    text = page.locator("#dialogue-text"),
    picture = page.locator("#pokepic-canvas");
  await expect(screen).toHaveAttribute("data-intro", "true");
  await expect(page.locator("#intro-screen")).toBeVisible();
  await expect(text).toHaveText("Are you a boy?\nOr are you a girl?");
  // Down, then A chooses "Girl"; B is ignored.
  await page.keyboard.press("KeyZ");
  await page.keyboard.press("ArrowDown");
  await expect(choice.getByRole("option", { name: "Girl" })).toHaveAttribute(
    "aria-selected",
    "true",
  );
  await page.keyboard.press("KeyX");
  await advanceTo(page, "What time is it?");
  // The hour starts at the device time; Up three times is 5 PM.
  const value = choice.locator("output");
  await expect(value).toHaveText("DAY 2 o'clock");
  for (let i = 0; i < 3; i++) await page.keyboard.press("ArrowUp");
  await expect(value).toHaveText("DAY 5 o'clock");
  await page.keyboard.press("KeyX");
  await expect(text).toHaveText("What?\nDAY 5 o'clock?");
  await choice.getByRole("button", { name: "YES" }).click();
  await expect(text).toHaveText("How many minutes?");
  await expect(value).toHaveText("37 min.");
  await choice.getByRole("button", { name: "Earlier" }).click();
  await expect(value).toHaveText("36 min.");
  await choice.getByRole("button", { name: "OK" }).click();
  await expect(text).toHaveText("Whoa! 36 min.?");
  await page.keyboard.press("KeyX");
  await expect(text).toHaveText("DAY 5:36!\nYikes! I over-\nslept!");
  await page.keyboard.press("KeyX");
  await expect(picture).toHaveAttribute("aria-label", "Professor Oak");
  await advanceTo(page, "This world is in-");
  await expect(picture).toHaveAttribute("aria-label", "WOOPER");
  await advanceTo(page, "Now, what did you");
  await expect(picture).toHaveAttribute("aria-label", "Kris");
  await page.keyboard.press("KeyX");
  await expect(choice.getByRole("option")).toHaveText([
    "NEW NAME",
    "KRIS",
    "AMANDA",
    "JUANA",
    "JODI",
  ]);
  await page.keyboard.press("KeyX");
  await expect(text).toHaveText("YOUR NAME?");
  await choice.locator("input").fill("LYRA");
  await choice.locator("input").press("Enter");
  await expect(text).toHaveText("LYRA, are you\nready?");
  await advanceTo(page, "I'll be seeing you");
  await page.keyboard.press("KeyX");
  await expect(screen).toHaveAttribute("data-intro", "false");
  await expect(page.locator("#intro-screen")).toBeHidden();
  await expect(page.locator("#pokepic")).toBeHidden();
  await expect(screen).toHaveAttribute("data-map", "24:7");

  await page.locator("#tab-saves").click();
  const download = page.waitForEvent("download");
  await page.locator("#backup").click();
  const record = JSON.parse(
    readFileSync((await (await download).path())!, "utf8"),
  );
  const save = JSON.parse(Buffer.from(record.state, "base64").toString("utf8"));
  expect(save).toMatchObject({
    intro: false,
    name: "LYRA",
    avatar: "kris",
    clock: { minuteOffset: 17 * 60 + 36 - (14 * 60 + 37) },
  });
  expect(errors).toEqual([]);
});

test("a session saved during the introduction starts it again", async ({
  page,
}) => {
  await start(page);
  await page.keyboard.press("KeyX");
  await advanceTo(page, "What time is it?");
  // Leaving the game tab pauses and saves.
  await page.locator("#tab-saves").click();
  await expect(page.locator("#save-status")).toContainText("Session saved");
  await page.reload();
  await page.locator("#rom-file").setInputFiles(romPath);
  await expect(page.locator("#status")).toContainText("saved session");
  await page.locator("#play").click();
  await expect(page.locator("#game-screen")).toHaveAttribute(
    "data-intro",
    "true",
  );
  await expect(page.locator("#dialogue-text")).toHaveText(
    "Are you a boy?\nOr are you a girl?",
  );
});