// The simulation in Chromium (F4.6a): Java's mode buttons, the design locked
// while it runs, the speed, the cables that carry frames, a computer's
// desktop opened with a tap — Java's title, its programs in Java's order, its
// network as it runs — and desktops kept over a return to the design.

import { expect, test, type Page } from '@playwright/test';
import { desktopOf, drawing, onDevice, openEditor, serveEditor } from './editorPage.js';

let server: { readonly base: string; readonly close: () => Promise<void> };

test.beforeAll(async () => {
  server = await serveEditor();
});

test.afterAll(async () => {
  await server.close();
});

async function deviceNamed(page: Page, name: string): Promise<string> {
  return (await drawing(page)).nodes.find((node) => node.name === name)!.id;
}

async function tap(page: Page, id: string): Promise<void> {
  const at = await onDevice(page, id);
  await page.mouse.click(at.x, at.y);
}

const simulationButton = (page: Page) => page.getByRole('button', { name: 'Wechselt in den Aktionsmodus' });
const designButton = (page: Page) => page.getByRole('button', { name: 'Wechselt in den Entwurfsmodus' });
const desktop = (page: Page, id: string) => page.locator(`section[data-desktop="${id}"]`);

/** Starts the simulation and waits until the room says it runs (it answers from its worker). */
async function start(page: Page): Promise<void> {
  await simulationButton(page).click();
  await expect(page.locator('svg.filius-canvas')).toHaveAttribute('data-mode', 'simulation');
}

test('locks the design while the simulation runs, as Java does, and gives it back', async ({ page }) => {
  await openEditor(page, server.base, 'zwei_rechnernetze_komplett.fls');
  const router = (await drawing(page)).nodes.find((node) => node.kind === 'router')!;
  await tap(page, router.id);
  await expect(page.getByRole('complementary', { name: 'Einstellungen' })).toBeVisible();
  await expect(designButton(page)).toHaveAttribute('aria-pressed', 'true');

  await simulationButton(page).click();
  await expect(simulationButton(page)).toHaveAttribute('aria-pressed', 'true');
  await expect(page.locator('svg.filius-canvas')).toHaveAttribute('data-mode', 'simulation');
  await expect(page.getByRole('complementary', { name: 'Einstellungen' })).toHaveCount(0);
  await expect(page.locator('[data-palette]')).toHaveCount(0);
  await expect(page.getByRole('button', { name: 'Rückgängig' })).toHaveCount(0);
  // Java's slider: 90 per cent at first (Verbindung's delay factor 10).
  const speed = page.locator('input[name="speed"]');
  await expect(speed).toHaveValue('90');
  await expect(page.getByTitle('Aktuelle Simulationsgeschwindigkeit')).toHaveText('90%');
  await speed.fill('40');
  await expect(page.getByTitle('Aktuelle Simulationsgeschwindigkeit')).toHaveText('40%');

  // Nothing moves, nothing is chosen, a key removes nothing.
  const at = await onDevice(page, router.id);
  await page.mouse.move(at.x, at.y);
  await page.mouse.down();
  await page.mouse.move(at.x + 80, at.y + 60, { steps: 5 });
  await page.mouse.up();
  await page.keyboard.press('Delete');
  const still = (await drawing(page)).nodes.find((node) => node.id === router.id)!;
  expect([still.x, still.y]).toEqual([router.x, router.y]);
  await expect(page.locator('g.device[data-selected]')).toHaveCount(0);

  await designButton(page).click();
  await expect(page.locator('svg.filius-canvas')).toHaveAttribute('data-mode', 'design');
  await expect(page.locator('[data-palette]').first()).toBeVisible();
  await expect(page.getByRole('button', { name: 'Rückgängig' })).toBeVisible();
  await expect(page.locator('input[name="speed"]')).toHaveCount(0);
  // The speed stays the room's for the next start.
  await simulationButton(page).click();
  await expect(page.locator('input[name="speed"]')).toHaveValue('40');
});

test("lights a cable while it carries a frame, in Java's green", async ({ page }) => {
  // The notebooks ask for their addresses by DHCP as the simulation starts.
  await openEditor(page, server.base, 'einfaches_rechnernetz_komplett.fls');
  await simulationButton(page).click();
  await expect(page.locator('path[data-link][data-active="true"]').first()).toBeAttached({ timeout: 10_000 });
  await expect(page.locator('path[data-link][data-active="true"]').first()).toHaveCSS('stroke', 'rgb(0, 255, 64)');
  await designButton(page).click();
  await expect(page.locator('path[data-link][data-active]')).toHaveCount(0);
});

test("opens a computer's desktop with a tap: Java's title, its programs in Java's order, its network as it runs", async ({ page }) => {
  await openEditor(page, server.base, 'zwei_rechnernetze_komplett.fls');
  const id = await deviceNamed(page, 'DNS-Server 2.10');
  expect((await desktopOf(page, id))!.programs).toHaveLength(3);
  await start(page);
  await tap(page, id);
  const window = desktop(page, id);
  await expect(window.getByRole('heading')).toHaveText('DNS-Server 2.10 - 141.99.2.10');
  await expect(window.locator('.desktop-icon span')).toHaveText(['Software-Installation', 'Datei-Explorer', 'DNS-Server', 'Webserver']);
  await expect(window.getByRole('button', { name: 'Startbildschirm' })).toBeVisible();

  await window.getByRole('button', { name: 'Netzwerk' }).click();
  const values = window.locator('.desktop-network dd');
  await expect(window.locator('.desktop-network dt')).toHaveText(['IP-Adresse:', 'Netzmaske:', 'DNS-Server:', 'Gateway:', 'MAC-Adresse:']);
  await expect(values.nth(0)).toHaveText('141.99.2.10');
  await expect(values.nth(4)).toHaveText(/^([0-9A-F]{2}:){5}[0-9A-F]{2}$/);
  // A press beside the panel closes it.
  await window.locator('.desktop-info-layer').click({ position: { x: 20, y: 20 } });
  await expect(window.locator('.desktop-network')).toHaveCount(0);

  // A switch has no desktop; its long-press menu has nothing either.
  await tap(page, await deviceNamed(page, 'Switch 1'));
  await expect(page.locator('section[data-desktop]')).toHaveCount(1);
  await window.getByRole('button', { name: 'Schließen' }).click();
  await expect(page.locator('section[data-desktop]')).toHaveCount(0);

  // Java's menu: "show desktop".
  const at = await onDevice(page, await deviceNamed(page, 'Notebook 1.10'));
  await page.mouse.move(at.x, at.y);
  await page.mouse.down();
  await page.waitForTimeout(700);
  await page.mouse.up();
  await page.getByRole('menuitem', { name: 'Desktop anzeigen' }).click();
  await expect(page.locator('section[data-desktop] h2')).toHaveText('Notebook 1.10 - 141.99.1.10');
  await expect(page.locator('section[data-desktop] .desktop-icon span')).toHaveText(['Software-Installation', 'Webbrowser']);
});

test('moves a desktop by its title bar, brings the one touched to the front, and keeps them over a return to the design', async ({ page }) => {
  await openEditor(page, server.base, 'zwei_rechnernetze_komplett.fls');
  const [first, second] = [await deviceNamed(page, 'Notebook 1.10'), await deviceNamed(page, 'Notebook 1.11')];
  await start(page);
  await tap(page, first);
  // Moved by its title bar into the half of the page the second notebook is not in.
  const at = await onDevice(page, second);
  const width = page.viewportSize()!.width;
  const bar = (await desktop(page, first).locator('.desktop-titlebar h2').boundingBox())!;
  const before = (await desktop(page, first).boundingBox())!;
  const step = { x: (at.x < width / 2 ? width - 650 : 0) - before.x, y: 30 };
  await page.mouse.move(bar.x + 10, bar.y + 10);
  await page.mouse.down();
  await page.mouse.move(bar.x + 10 + step.x, bar.y + 10 + step.y, { steps: 8 });
  await page.mouse.up();
  const after = (await desktop(page, first).boundingBox())!;
  expect([Math.round(after.x - before.x), Math.round(after.y - before.y)]).toEqual([Math.round(step.x), step.y]);

  await tap(page, second);
  await expect(page.locator('section[data-desktop]')).toHaveCount(2);
  const z = async (id: string) => Number(await desktop(page, id).evaluate((element) => getComputedStyle(element).zIndex));
  expect(await z(second)).toBeGreaterThan(await z(first));
  await desktop(page, first).locator('.desktop-titlebar h2').click();
  expect(await z(first)).toBeGreaterThan(await z(second));

  await designButton(page).click();
  await expect(page.locator('section[data-desktop]')).toHaveCount(0);
  await simulationButton(page).click();
  await expect(page.locator('section[data-desktop]')).toHaveCount(2);
  expect(Math.round((await desktop(page, first).boundingBox())!.x)).toBe(Math.round(after.x));
});

test('takes nothing back and keeps no design tool while the simulation runs', async ({ page }) => {
  await openEditor(page, server.base, 'zwei_rechnernetze_komplett.fls');
  const id = await deviceNamed(page, 'Notebook 1.10');
  const at = await onDevice(page, id);
  await page.mouse.move(at.x, at.y);
  await page.mouse.down();
  await page.mouse.move(at.x + 60, at.y + 40, { steps: 5 });
  await page.mouse.up();
  const moved = (await drawing(page)).nodes.find((node) => node.id === id)!;
  await page.locator('[data-palette="cable"]').click();
  await expect(page.locator('svg.filius-canvas')).toHaveAttribute('data-tool', 'cable');
  await start(page);
  await page.keyboard.press('Control+z');
  const still = (await drawing(page)).nodes.find((node) => node.id === id)!;
  expect([still.x, still.y]).toEqual([moved.x, moved.y]);
  await designButton(page).click();
  await expect(page.locator('svg.filius-canvas')).toHaveAttribute('data-tool', 'select');
  // Back in the design, the step can be taken back.
  await page.getByRole('button', { name: 'Rückgängig' }).click();
  await expect.poll(async () => (await drawing(page)).nodes.find((node) => node.id === id)!.x).not.toBe(moved.x);
});

test("titles a desktop with the address alone where the address is the computer's name, and lights its network icon while its cable carries a frame", async ({ page }) => {
  await openEditor(page, server.base, 'einfaches_rechnernetz_komplett.fls');
  const id = await deviceNamed(page, 'Rechner 1');
  await tap(page, id);
  await page.getByRole('complementary', { name: 'Einstellungen' }).getByLabel('IP-Adresse als Name verwenden').check();
  await page.getByRole('complementary', { name: 'Einstellungen' }).getByRole('button', { name: 'Schließen' }).click();
  // The notebooks ask for their addresses by DHCP as the simulation starts; the switch passes their broadcasts on to Rechner 1.
  await start(page);
  await tap(page, id);
  const window = desktop(page, id);
  await expect(window.getByRole('heading')).toHaveText('192.168.0.11');
  await expect(window.locator('.desktop-network-icon[data-active="true"]')).toBeAttached({ timeout: 10_000 });
  await window.getByRole('button', { name: 'Netzwerk' }).click();
  await expect(window.locator('.desktop-network')).toBeVisible();
  await window.getByRole('button', { name: 'Startbildschirm' }).click();
  await expect(window.locator('.desktop-network')).toHaveCount(0);
});

test("closes a desktop whose computer is removed while the design is shown", async ({ page }) => {
  await openEditor(page, server.base, 'zwei_rechnernetze_komplett.fls');
  const id = await deviceNamed(page, 'Notebook 1.10');
  await start(page);
  await tap(page, id);
  await designButton(page).click();
  await expect(page.locator('svg.filius-canvas')).toHaveAttribute('data-mode', 'design');
  await tap(page, id);
  await page.keyboard.press('Delete');
  await simulationButton(page).click();
  await expect(page.locator('svg.filius-canvas')).toHaveAttribute('data-mode', 'simulation');
  await expect(page.locator('section[data-desktop]')).toHaveCount(0);
  // The next desktop takes the first place: the gone one is not counted.
  const next = await deviceNamed(page, 'Notebook 1.11');
  await tap(page, next);
  const area = (await page.locator('.editor-area').boundingBox())!;
  const box = (await desktop(page, next).boundingBox())!;
  expect([Math.round(box.x - area.x), Math.round(box.y - area.y)]).toEqual([24, 76]);
});

test.describe('on a phone', () => {
  test.use({ viewport: { width: 390, height: 844 }, hasTouch: true });

  test('fills the surface with a desktop opened by a tap, below the mode buttons', async ({ page }) => {
    await openEditor(page, server.base, 'zwei_rechnernetze_komplett.fls');
    await simulationButton(page).tap();
    await expect(page.locator('svg.filius-canvas')).toHaveAttribute('data-mode', 'simulation');
    await page.getByRole('button', { name: 'Alles zeigen' }).tap();
    const id = await deviceNamed(page, 'Notebook 1.10');
    const at = await onDevice(page, id);
    await page.touchscreen.tap(at.x, at.y);
    const window = desktop(page, id);
    await expect(window).toBeVisible();
    const box = (await window.boundingBox())!;
    const area = (await page.locator('.editor-area').boundingBox())!;
    const modes = (await simulationButton(page).boundingBox())!;
    expect(box.width).toBeCloseTo(area.width, 0);
    expect(box.y).toBeGreaterThanOrEqual(modes.y + modes.height);
    expect(box.y + box.height).toBeCloseTo(area.y + area.height, 0);
    const home = (await window.getByRole('button', { name: 'Startbildschirm' }).boundingBox())!;
    expect(home.height).toBeGreaterThanOrEqual(44);
  });
});

test('speaks English when asked', async ({ page }) => {
  await openEditor(page, server.base, 'zwei_rechnernetze_komplett.fls', '&lang=en');
  await page.getByRole('button', { name: 'Change to Simulation Mode' }).click();
  await expect(page.locator('svg.filius-canvas')).toHaveAttribute('data-mode', 'simulation');
  const id = await deviceNamed(page, 'DNS-Server 2.10');
  await tap(page, id);
  await expect(desktop(page, id).locator('.desktop-icon span')).toHaveText(['Software Installation', 'DNS server', 'File explorer', 'Webserver']);
  await expect(desktop(page, id).getByRole('button', { name: 'Home Screen' })).toBeVisible();
});