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

async function login(page: Page) {
	await page.goto('/login/');
	await page.fill('#lg-username', 'demo');
	await page.fill('#lg-password', 'demo');
	await page.click('button[type=submit]');
	await expect(page.getByTestId('nav-menu')).toBeVisible();
}

/** Every run is persisted server-side, so running one seeds the history. */
async function runPrediction(page: Page) {
	await page.getByTestId('run-btn').click();
	await expect(page.getByTestId('flight-time')).toBeVisible({ timeout: 15000 });
}

test('a run appears in history with its landing and flight time', async ({ page }) => {
	await login(page);
	await runPrediction(page);

	await page.goto('/user/predictions/');
	await expect(page.getByTestId('history-table')).toBeVisible();
	const rows = page.getByTestId('history-table').locator('tbody tr');
	await expect(rows.first()).toBeVisible();
	// Mock history is shared across the run and may also hold ensemble rows, so
	// assert that at least one single-run row carries a derived flight time.
	await expect(rows.filter({ hasText: /\d+ч \d+мин|\dh \d+min/ }).first()).toBeVisible();

	await page.getByTestId('history-detail').first().click();
	await expect(page.getByTestId('history-detail-card')).toContainText('complete');
});

test('deleting a prediction offers undo and restores it', async ({ page }) => {
	await login(page);
	await runPrediction(page);
	await page.goto('/user/predictions/');

	// The mock keeps history in dev-server state shared by the whole run, so
	// assert on the change rather than an absolute count.
	const rows = page.getByTestId('history-table').locator('tbody tr');
	await expect(rows.first()).toBeVisible();
	const before = await rows.count();

	await page.getByTestId('history-delete').first().click();
	await expect(page.getByTestId('undo-bar')).toBeVisible();
	if (before === 1) {
		await expect(page.getByTestId('history-empty')).toBeVisible();
	} else {
		await expect(rows).toHaveCount(before - 1);
	}

	// Undo cancels the pending server call and restores the row.
	await page.getByTestId('undo-delete').click();
	await expect(page.getByTestId('history-table').locator('tbody tr')).toHaveCount(before);
});

test('a past run can be loaded back into a new scenario', async ({ page }) => {
	await login(page);
	await runPrediction(page);
	await page.goto('/user/predictions/');

	await page.getByTestId('history-load').first().click();
	// It lands on the map view with an extra scenario built from the stored request.
	await expect(page).toHaveURL(/\/app/);
	await expect(page.getByTestId('select-scenario')).toHaveCount(2);
});