// The text editor on a computer's desktop in Chromium (F4.6f2), on
// browser/fixtures/web-pages.fls (test/webPagesFixture.test.ts): installed
// while the simulation runs, a page written and saved through Java's file
// dialog into the web server's folder, fetched by the other computer's
// browser, changed while it runs and fetched again; the caret where one
// types, the window's own undo, what the dialog refuses, a file removed by
// the command line while it is open, „Neu“.

import { dirname, join } from 'node:path';
import { fileURLToPath } from 'node:url';
import { expect, test, type Page } from '@playwright/test';
import { drawing, onDevice, 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();
});

/** What the development page lets a test do: write into a file as another would. */
interface DevPage {
  readonly insertText: (id: string, path: string, index: number, text: string) => void;
}

const FIXTURE = join(dirname(fileURLToPath(import.meta.url)), 'fixtures/web-pages.fls');

async function openPages(page: Page): Promise<void> {
  await page.goto(`${server.base}?example=new`);
  await page.waitForSelector('svg.filius-canvas');
  await page.locator('input[type="file"]').setInputFiles(FIXTURE);
  await expect.poll(async () => (await drawing(page).catch(() => ({ nodes: [] }))).nodes.length).toBe(4);
  await page.getByRole('button', { name: 'Wechselt in den Aktionsmodus' }).click();
  await expect(page.locator('svg.filius-canvas')).toHaveAttribute('data-mode', 'simulation');
}

/** A computer's desktop, opened with a tap. */
async function desktopOf(page: Page, name: string) {
  const id = (await drawing(page)).nodes.find((node) => node.name === name)!.id;
  const at = await onDevice(page, id);
  await page.mouse.click(at.x, at.y);
  return page.locator(`section[data-desktop="${id}"]`);
}

test('writes a page into the web server, which serves it while the simulation runs, and changes it there', async ({ page }) => {
  test.setTimeout(120_000);
  await openPages(page);
  const desktop = await desktopOf(page, 'Server');
  // Installed while it runs, with the command line beside it.
  await desktop.locator('[data-program="installation"]').click();
  const installation = desktop.locator('[data-program-window="installation"]');
  const available = installation.locator('[data-list="available"] [role="option"]');
  await available.filter({ hasText: 'Text-Editor' }).click();
  await available.filter({ hasText: 'Befehlszeile' }).click();
  await installation.getByRole('button', { name: 'Installieren' }).click();
  await installation.getByRole('button', { name: 'Änderungen annehmen' }).click();

  await desktop.locator('[data-program="textEditor"]').click();
  const window = desktop.locator('[data-program-window="textEditor"]');
  const title = window.locator('.program-titlebar h3');
  const text = window.getByRole('textbox', { name: 'Text' });
  await expect(title).toHaveText('Text-Editor');
  await expect(window.locator('.text-editor-bar button')).toHaveText(['Neu', 'Öffnen', 'Speichern', 'Speichern unter']);
  await expect(text).toHaveCSS('font-size', '16px');

  // A new text: „Speichern“ asks for a name in Java's dialog; a tap opens a folder.
  await text.fill('<html><head><title>Neu</title></head><body>Erster Stand</body></html>');
  await window.getByRole('button', { name: 'Speichern', exact: true }).click();
  const dialog = window.getByRole('dialog', { name: 'Datei Speichern' });
  await expect(dialog.locator('.file-dialog-folder span')).toHaveText('Ordner: /');
  await expect(dialog.getByRole('button', { name: 'Ordner aufwärts' })).toBeDisabled();
  await expect(dialog.locator('.file-dialog-entries button')).toHaveText(['webserver']);
  await dialog.locator('.file-dialog-entries button', { hasText: 'webserver' }).click();
  await expect(dialog.locator('.file-dialog-folder span')).toHaveText('Ordner: /webserver');
  await expect(dialog.locator('.file-dialog-entries button')).toHaveText(['ordner', 'index.html', 'splashscreen-mini.png', 'ziel.html', 'zwei.html']);
  // No name: said in the dialog, which stays.
  await dialog.getByRole('button', { name: 'Speichern' }).click();
  await expect(dialog.getByRole('alert')).toHaveText('Geben Sie einen Dateinamen ein.');
  await dialog.getByRole('textbox', { name: 'Dateiname:' }).fill('neu.html');
  await dialog.getByRole('button', { name: 'Speichern' }).click();
  await expect(dialog).toHaveCount(0);
  await expect(title).toHaveText('Text-Editor - neu.html');
  // Saved as it is typed: „Speichern“ has nothing left to do.
  await expect(window.getByRole('button', { name: 'Speichern', exact: true })).toBeDisabled();

  // The other computer's browser fetches it from the running web server (the desktops closed in between, which covered the computers).
  const fetchPage = async (expected: string) => {
    await desktop.locator('.desktop-close').click();
    const browserDesktop = await desktopOf(page, 'Browser');
    await browserDesktop.locator('[data-program="webBrowser"]').click();
    const browser = browserDesktop.locator('[data-program-window="webBrowser"]');
    const address = browser.getByRole('textbox', { name: 'Adresse' });
    await address.fill('192.168.0.20/neu.html');
    await address.press('Enter');
    await expect(browser.frameLocator('iframe[title="Seite"]').locator('body')).toHaveText(expected, { timeout: 30_000 });
    await browserDesktop.locator('.desktop-close').click();
    await desktopOf(page, 'Server');
    await desktop.locator('[data-program="textEditor"]').click();
  };
  await fetchPage('Erster Stand');
  // The window is kept over the desktop closed, as Java's desktop keeps it.
  await expect(title).toHaveText('Text-Editor - neu.html');

  // Changed in the middle, the caret where one types: the server serves it at once.
  const at = (await text.inputValue()).indexOf('Erster');
  await text.evaluate((area: HTMLTextAreaElement, index) => {
    area.focus();
    area.setSelectionRange(index, index + 'Erster'.length);
  }, at);
  await page.keyboard.type('Zweiter');
  await expect(text).toHaveValue('<html><head><title>Neu</title></head><body>Zweiter Stand</body></html>');
  await fetchPage('Zweiter Stand');

  // Another writes before the caret: the caret moves with its text, and one types on where one was.
  const id = (await drawing(page)).nodes.find((node) => node.name === 'Server')!.id;
  await text.evaluate((area: HTMLTextAreaElement, index) => {
    area.focus();
    area.setSelectionRange(index, index);
  }, at + 'Zweiter'.length);
  await page.evaluate(([node]) => (window as unknown as { filiusDev: DevPage }).filiusDev.insertText(node!, '/webserver/neu.html', 0, '<!-- x -->'), [id]);
  await expect(text).toHaveValue('<!-- x --><html><head><title>Neu</title></head><body>Zweiter Stand</body></html>');
  await page.keyboard.type('!');
  await expect(text).toHaveValue('<!-- x --><html><head><title>Neu</title></head><body>Zweiter! Stand</body></html>');
  await page.keyboard.press('Backspace');
  await text.evaluate((area: HTMLTextAreaElement) => area.blur());
  await expect(text).toHaveValue('<!-- x --><html><head><title>Neu</title></head><body>Zweiter Stand</body></html>');

  // The window's own undo takes back its typing.
  await text.press('Control+z');
  await expect(text).toHaveValue('<!-- x --><html><head><title>Neu</title></head><body>Erster Stand</body></html>');
  await text.press('Control+y');
  await expect(text).toHaveValue('<!-- x --><html><head><title>Neu</title></head><body>Zweiter Stand</body></html>');

  // „Öffnen“: a name that is not there and an image are refused, the open file stays.
  await window.getByRole('button', { name: 'Öffnen' }).click();
  const opening = window.getByRole('dialog', { name: 'Datei Öffnen' });
  await opening.getByRole('textbox', { name: 'Dateiname:' }).fill('fehlt.txt');
  await opening.getByRole('button', { name: 'Öffnen' }).click();
  await expect(opening.getByRole('alert')).toHaveText('Die Datei „fehlt.txt“ gibt es nicht.');
  await opening.locator('.file-dialog-entries button', { hasText: 'webserver' }).click();
  await opening.locator('.file-dialog-entries button', { hasText: 'splashscreen-mini.png' }).click();
  await expect(opening.getByRole('textbox', { name: 'Dateiname:' })).toHaveValue('splashscreen-mini.png');
  await opening.getByRole('button', { name: 'Öffnen' }).click();
  await expect(opening.getByRole('alert')).toHaveText('„splashscreen-mini.png“ ist keine Textdatei.');
  await opening.getByRole('button', { name: 'Abbrechen' }).click();
  await expect(title).toHaveText('Text-Editor - neu.html');

  // Removed by the command line while open: the text stays as a new text, „Speichern“ asks for a name.
  await desktop.locator('.desktop-home').click();
  await desktop.locator('[data-program="commandPrompt"]').click();
  const input = desktop.locator('input[name="terminalInput"]');
  await input.fill('rm /webserver/neu.html');
  await input.press('Enter');
  await desktop.locator('.desktop-home').click();
  await desktop.locator('[data-program="textEditor"]').click();
  await expect(title).toHaveText('Text-Editor');
  await expect(window.getByRole('status')).toHaveText('Die Datei „neu.html“ wurde gelöscht. Der Text ist noch da; „Speichern“ legt ihn als neue Datei ab.');
  await expect(text).toHaveValue('<!-- x --><html><head><title>Neu</title></head><body>Zweiter Stand</body></html>');
  await expect(window.getByRole('button', { name: 'Speichern', exact: true })).toBeEnabled();

  // „Neu“: empty, no file.
  await window.getByRole('button', { name: 'Neu' }).click();
  await expect(text).toHaveValue('');
  await expect(window.getByRole('status')).toHaveCount(0);
});