import { test, expect, type Page } from "@playwright/test";

const BASE = process.env.BASE_URL ?? "http://localhost:3000";

function trackErrors(page: Page): string[] {
  const errors: string[] = [];
  page.on("console", (msg) => {
    if (msg.type() === "error") errors.push(msg.text());
  });
  page.on("pageerror", (err) => {
    errors.push(String(err));
  });
  return errors;
}

test.describe("character page", () => {
  test("add a spell, undo it, redo it", async ({ page }) => {
    const errors = trackErrors(page);
    await page.goto(`${BASE}/`);

    const vacant = page.locator(".prepared-slot.vacant").first();
    await vacant.locator("input").fill("Щит веры");
    await vacant.locator("button[title='Записать заклинание']").click();

    await expect(page.locator(".spell-name", { hasText: "Щит веры" })).toBeVisible();

    // Ctrl+Z on the page (focus is on the button, not an input) undoes
    // the add; Ctrl+Y redoes it.
    await page.keyboard.press("Control+z");
    await expect(page.locator(".spell-name", { hasText: "Щит веры" })).toHaveCount(0);

    await page.keyboard.press("Control+y");
    await expect(page.locator(".spell-name", { hasText: "Щит веры" })).toBeVisible();

    expect(errors).toEqual([]);
  });

  test("remove a spell empties its slot", async ({ page }) => {
    const errors = trackErrors(page);
    await page.goto(`${BASE}/`);

    const fireball = page.locator(".prepared-slot.occupied", { hasText: "Огненный шар" });
    await fireball.locator("button[title='Убрать заклинание']").click();

    await expect(page.locator(".spell-name", { hasText: "Огненный шар" })).toHaveCount(0);
    await expect(page.locator(".prepared-slot.vacant")).toHaveCount(3);

    expect(errors).toEqual([]);
  });

  test("a prepared spell survives a reload", async ({ page }) => {
    const errors = trackErrors(page);
    await page.goto(`${BASE}/`);

    const vacant = page.locator(".prepared-slot.vacant").first();
    await vacant.locator("input").fill("Щит веры");
    await vacant.locator("button[title='Записать заклинание']").click();
    await expect(page.locator(".spell-name", { hasText: "Щит веры" })).toBeVisible();

    // Autosave is debounced by 500 ms; give it time before reloading.
    await page.waitForTimeout(700);
    await page.reload();

    await expect(page.locator(".spell-name", { hasText: "Щит веры" })).toBeVisible();
    expect(errors).toEqual([]);
  });

  test("attune an item, clear it, reload keeps the attunement", async ({ page }) => {
    const errors = trackErrors(page);
    await page.goto(`${BASE}/`);

    const slot = page.locator(".attunement-slot").first();
    await slot.locator("input").fill("Посох погоды");
    await slot.locator("button[title='Привязать предмет']").click();
    await expect(page.locator(".attuned-item")).toHaveText("Посох погоды");

    // Reload: the attunement persists.
    await page.waitForTimeout(700);
    await page.reload();
    await expect(page.locator(".attuned-item")).toHaveText("Посох погоды");

    // Clear it.
    await page.locator("button[title='Снять привязку']").click();
    await expect(page.locator(".attuned-item")).toHaveCount(0);

    expect(errors).toEqual([]);
  });

  test("more attunement slots can be added for custom campaigns", async ({ page }) => {
    const errors = trackErrors(page);
    await page.goto(`${BASE}/`);

    await expect(page.locator(".attunement-slot")).toHaveCount(3);
    await page.locator("button[title='Добавить слот привязки']").click();
    await expect(page.locator(".attunement-slot")).toHaveCount(4);

    const fourth = page.locator(".attunement-slot").nth(3);
    await fourth.locator("input").fill("Волшебный рог");
    await fourth.locator("button[title='Привязать предмет']").click();
    await expect(page.locator(".attuned-item")).toHaveText("Волшебный рог");

    expect(errors).toEqual([]);
  });

  test("armor class is set manually and persists", async ({ page }) => {
    const errors = trackErrors(page);
    await page.goto(`${BASE}/`);

    const ac = page.locator("#ac");
    await expect(ac).toHaveValue("16");
    await ac.fill("18");

    // Autosave is debounced by 500 ms; give it time before reloading.
    await page.waitForTimeout(700);
    await page.reload();
    await expect(page.locator("#ac")).toHaveValue("18");

    expect(errors).toEqual([]);
  });
});