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, room: boolean | "poster" | "center" = false) {
  await page.route("**/src/game/runtime.ts", async (route) => {
    const response = await route.fetch(),
      source = await response.text();
    const needle = "const world = new GameWorld(assets);";
    expect(source).toContain(needle);
    await route.fulfill({
      response,
      body: source.replace(
        needle,
        `const { foundationFixture } = await import('/tests/foundation-fixture.ts'); const world = foundationFixture(assets, ${JSON.stringify(room)});`,
      ),
    });
  });
  await page.clock.install({ time: new Date("2026-09-22T12:00:00") });
  await page.goto("/");
  await page.locator("#rom-file").setInputFiles(romPath);
  await expect(page.locator("#status")).toContainText("verified");
  await page.clock.pauseAt(new Date("2026-09-22T12:05:00"));
  await page.locator("#play").click();
}
async function backup(page: Page) {
  await page.locator("#tab-saves").click();
  const download = page.waitForEvent("download");
  await page.locator("#backup").click();
  const path = (await (await download).path())!;
  const record = JSON.parse(readFileSync(path, "utf8"));
  return {
    path,
    state: JSON.parse(Buffer.from(record.state, "base64").toString("utf8")),
  };
}
test("Start opens Key Items, freezes movement, and uses the Bicycle with keyboard and touch", async ({
  page,
}) => {
  await start(page);
  await page.keyboard.press("Enter");
  await expect(page.locator("#field-menu")).toBeVisible();
  await page.keyboard.down("ArrowDown");
  await page.clock.runFor(1000);
  await page.keyboard.up("ArrowDown");
  await expect(page.locator("#game-screen")).toHaveAttribute("data-y", "6");
  await page
    .locator("#field-items")
    .getByRole("button", { name: "BICYCLE", exact: true })
    .click();
  await page.keyboard.press("KeyX");
  await page.clock.runFor(500);
  await expect(page.locator("#field-menu")).toBeHidden();
  await expect(page.locator("#game-notice")).toHaveText("");
  expect((await backup(page)).state.playerState).toBe(1);
});
test("the bedroom PC puts away a decoration and saves the result", async ({
  page,
}) => {
  await start(page, true);
  await page.keyboard.press("KeyX");
  await expect(page.locator("#game-notice")).toHaveText("");
  await expect(page.locator("#dialogue-text")).toContainText(
    "turned on the PC.",
  );
  await page.keyboard.press("KeyX");
  const choices = page.locator("#dialogue-choice");
  await choices
    .getByRole("option", { name: "DECORATION", exact: true })
    .click();
  await expect(page.locator("#dialogue-text")).toHaveText("DECORATION");
  await choices.getByRole("option", { name: "BED", exact: true }).click();
  await choices
    .getByRole("option", { name: "PUT IT AWAY", exact: true })
    .click();
  await page.keyboard.press("KeyX");
  await choices.getByRole("option", { name: "EXIT", exact: true }).click();
  await page.clock.runFor(500);
  await expect(page.locator("#game-notice")).toHaveText("");
  expect((await backup(page)).state.decorations.bed).toBe(0);
});
test("B cancels the pack and an indoor Bicycle attempt leaves the player walking", async ({
  page,
}) => {
  await start(page, true);
  await page.keyboard.press("Enter");
  await page.keyboard.press("KeyZ");
  await expect(page.locator("#field-menu")).toBeHidden();
  await page.keyboard.press("Enter");
  await page
    .locator("#field-items")
    .getByRole("button", { name: "BICYCLE", exact: true })
    .click();
  await expect(page.locator("#game-notice")).toContainText("can’t use");
  expect((await backup(page)).state.playerState).toBe(0);
});

test("the Town Map poster opens a native map and closes with B", async ({
  page,
}) => {
  await page.setViewportSize({ width: 320, height: 568 });
  await start(page, "poster");
  await page.keyboard.press("KeyX");
  await expect(page.locator("#dialogue-text")).toContainText("TOWN MAP");
  await page.keyboard.press("KeyX");
  await expect(page.locator("#town-map-view")).toBeVisible();
  const colors = await page
    .locator("#town-map-canvas")
    .evaluate(
      (canvas: HTMLCanvasElement) =>
        new Set(canvas.getContext("2d")!.getImageData(0, 0, 160, 144).data)
          .size,
    );
  expect(colors).toBeGreaterThan(8);
  await page.keyboard.press("KeyZ");
  await expect(page.locator("#town-map-view")).toBeHidden();
  await expect(page.locator("#game-notice")).toHaveText("");
});

test("the Pokémon Center PC deposits a Pokémon and an item", async ({
  page,
}) => {
  await start(page, "center");
  const text = page.locator("#dialogue-text"),
    choices = page.locator("#dialogue-choice");
  await page.keyboard.press("KeyX");
  await expect(text).toContainText("turned on the PC.");
  await page.keyboard.press("KeyX");
  await choices.getByRole("option", { name: "BILL's PC", exact: true }).click();
  await expect(text).toContainText("BILL's PC");
  await page.keyboard.press("KeyX");
  await page.keyboard.press("KeyX");
  await choices
    .getByRole("option", { name: "DEPOSIT POKéMON", exact: true })
    .click();
  await choices.getByRole("option", { name: "PIDGEY :L4" }).click();
  await choices.getByRole("option", { name: "DEPOSIT", exact: true }).click();
  await expect(text).toHaveText("Stored PIDGEY!");
  await page.clock.runFor(2000);
  await expect(choices.getByRole("option", { name: "PIDGEY :L4" })).toHaveCount(
    0,
  );
  // B leaves the party list, then Bill's PC.
  await page.keyboard.press("KeyZ");
  await page.keyboard.press("KeyZ");
  await expect(choices.getByRole("option", { name: "TURN OFF" })).toBeVisible();
  await choices
    .getByRole("option", { name: /'s PC$/ })
    .last()
    .click();
  await page.keyboard.press("KeyX");
  await page.keyboard.press("KeyX");
  await choices
    .getByRole("option", { name: "DEPOSIT ITEM", exact: true })
    .click();
  const storage = page.locator("#mart");
  await expect(storage).toHaveAttribute("aria-label", "Item storage");
  await expect(page.locator("#mart-money")).toBeHidden();
  await storage.getByRole("button", { name: /POTION/ }).click();
  await storage.getByRole("button", { name: "Plus 1", exact: true }).click();
  await storage.getByRole("button", { name: "DEPOSIT", exact: true }).click();
  await expect(text).toContainText("Deposited 2 POTION(S).");
  await page.keyboard.press("KeyX");
  await storage.getByRole("button", { name: "BACK", exact: true }).click();
  await choices.getByRole("option", { name: "LOG OFF", exact: true }).click();
  await choices.getByRole("option", { name: "TURN OFF", exact: true }).click();
  await page.keyboard.press("KeyX");
  await page.clock.runFor(500);
  await expect(page.locator("#game-notice")).toHaveText("");
  const { state } = await backup(page);
  expect(state.party).toHaveLength(1);
  expect(
    state.storage.boxes[0].map((mon: { species: number }) => mon.species),
  ).toEqual([16]);
  expect(state.pcItems).toEqual([{ item: 18, quantity: 2 }]);
  expect(state.bag.items).toEqual([{ item: 18, quantity: 3 }]);
});