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

/**
 * Helper utilities for E2E tests
 * Navigation, wait conditions, and common actions
 */

/**
 * Navigate to page and wait for load
 */
export async function navigateTo(page: Page, url: string, waitUntil: 'load' | 'domcontentloaded' | 'networkidle' = 'networkidle'): Promise<void> {
  await page.goto(url, { waitUntil });
}

/**
 * Wait for element to be ready (visible and stable)
 */
export async function waitForElement(
  page: Page,
  selector: string,
  timeout: number = 5000
): Promise<void> {
  const locator = page.locator(selector);
  await expect(locator).toBeVisible({ timeout });
  // Give DOM a moment to settle
  await page.waitForLoadState('networkidle');
}

/**
 * Fill form field with clearing first
 */
export async function fillField(
  page: Page,
  selector: string,
  value: string,
  clear: boolean = true
): Promise<void> {
  const field = page.locator(selector);

  if (clear) {
    await field.fill(''); // Clear
  }

  await field.fill(value);
  // Trigger change event if not triggered automatically
  await field.dispatchEvent('change');
}

/**
 * Click element and wait for navigation
 */
export async function clickAndWait(
  page: Page,
  selector: string,
  waitFor: 'navigation' | 'loadstate' = 'loadstate'
): Promise<void> {
  const locator = page.locator(selector);

  if (waitFor === 'navigation') {
    await Promise.all([
      page.waitForNavigation(),
      locator.click(),
    ]);
  } else {
    await locator.click();
    await page.waitForLoadState('networkidle');
  }
}

/**
 * Get text content of element
 */
export async function getText(page: Page, selector: string): Promise<string> {
  const locator = page.locator(selector);
  return locator.textContent() || '';
}

/**
 * Get input value
 */
export async function getInputValue(page: Page, selector: string): Promise<string> {
  const locator = page.locator(selector);
  const value = await locator.inputValue();
  return value || '';
}

/**
 * Check if element is visible
 */
export async function isElementVisible(page: Page, selector: string): Promise<boolean> {
  const locator = page.locator(selector);
  return locator.isVisible();
}

/**
 * Check if element is enabled
 */
export async function isElementEnabled(page: Page, selector: string): Promise<boolean> {
  const locator = page.locator(selector);
  return locator.isEnabled();
}

/**
 * Select dropdown option by text
 */
export async function selectOption(
  page: Page,
  selector: string,
  optionText: string
): Promise<void> {
  const dropdown = page.locator(selector);
  await dropdown.selectOption({ label: optionText });
}

/**
 * Wait for table row to contain text
 */
export async function waitForTableRow(
  page: Page,
  tableSelector: string,
  cellText: string,
  timeout: number = 5000
): Promise<void> {
  const row = page.locator(`${tableSelector} >> text=${cellText}`);
  await expect(row).toBeVisible({ timeout });
}

/**
 * Get row data from table
 */
export async function getTableRowData(
  page: Page,
  rowSelector: string
): Promise<Record<string, string>> {
  const cells = page.locator(`${rowSelector} [data-testid*="cell"]`);
  const count = await cells.count();
  const data: Record<string, string> = {};

  for (let i = 0; i < count; i++) {
    const cellText = await cells.nth(i).textContent();
    data[`cell_${i}`] = cellText || '';
  }

  return data;
}

/**
 * Hover over element
 */
export async function hoverElement(page: Page, selector: string): Promise<void> {
  const locator = page.locator(selector);
  await locator.hover();
}

/**
 * Double-click element
 */
export async function doubleClickElement(page: Page, selector: string): Promise<void> {
  const locator = page.locator(selector);
  await locator.dblclick();
}

/**
 * Right-click element
 */
export async function rightClickElement(page: Page, selector: string): Promise<void> {
  const locator = page.locator(selector);
  await locator.click({ button: 'right' });
}

/**
 * Scroll element into view
 */
export async function scrollIntoView(page: Page, selector: string): Promise<void> {
  const locator = page.locator(selector);
  await locator.scrollIntoViewIfNeeded();
}

/**
 * Get number of elements matching selector
 */
export async function getElementCount(page: Page, selector: string): Promise<number> {
  const locator = page.locator(selector);
  return locator.count();
}

/**
 * Wait for specific network condition
 */
export async function waitForNetworkIdle(
  page: Page,
  timeout: number = 5000
): Promise<void> {
  await page.waitForLoadState('networkidle', { timeout });
}

/**
 * Extract all text from selector and split by newlines
 */
export async function getAllText(page: Page, selector: string): Promise<string[]> {
  const locator = page.locator(selector);
  const count = await locator.count();
  const texts: string[] = [];

  for (let i = 0; i < count; i++) {
    const text = await locator.nth(i).textContent();
    if (text) {
      texts.push(text.trim());
    }
  }

  return texts;
}

/**
 * Check for error/success messages
 */
export async function hasErrorMessage(page: Page): Promise<boolean> {
  return isElementVisible(page, '[data-testid="toast-error"]');
}

/**
 * Check for success message
 */
export async function hasSuccessMessage(page: Page): Promise<boolean> {
  return isElementVisible(page, '[data-testid="toast-success"]');
}

/**
 * Wait for success message to appear and disappear
 */
export async function waitForSuccessAndDismiss(
  page: Page,
  timeout: number = 5000
): Promise<void> {
  const successToast = page.locator('[data-testid="toast-success"]');
  await expect(successToast).toBeVisible({ timeout });
  await expect(successToast).not.toBeVisible({ timeout: 10000 });
}

/**
 * Clear input field completely
 */
export async function clearField(page: Page, selector: string): Promise<void> {
  const field = page.locator(selector);
  await field.focus();
  await field.press('Control+A');
  await field.press('Backspace');
}

/**
 * Type text slowly (for OCR testing)
 */
export async function typeSlowly(
  page: Page,
  selector: string,
  text: string,
  delayMs: number = 50
): Promise<void> {
  const field = page.locator(selector);
  await field.focus();

  for (const char of text) {
    await field.type(char);
    await page.waitForTimeout(delayMs);
  }
}

/**
 * Take screenshot with timestamp
 */
export async function takeScreenshot(page: Page, name: string): Promise<void> {
  const timestamp = new Date().toISOString().replace(/[:.]/g, '-');
  await page.screenshot({ path: `screenshots/${name}-${timestamp}.png` });
}

/**
 * Get localStorage data
 */
export async function getLocalStorage(page: Page, key: string): Promise<string | null> {
  return page.evaluate((k) => localStorage.getItem(k), key);
}

/**
 * Set localStorage data
 */
export async function setLocalStorage(page: Page, key: string, value: string): Promise<void> {
  await page.evaluate((k, v) => localStorage.setItem(k, v), key, value);
}

/**
 * Clear localStorage
 */
export async function clearLocalStorage(page: Page): Promise<void> {
  await page.evaluate(() => localStorage.clear());
}

/**
 * Get URL pathname
 */
export async function getCurrentPath(page: Page): Promise<string> {
  return page.evaluate(() => window.location.pathname);
}

/**
 * Wait for URL to match pattern
 */
export async function waitForUrl(
  page: Page,
  urlPattern: RegExp | string,
  timeout: number = 5000
): Promise<void> {
  if (typeof urlPattern === 'string') {
    await expect(page).toHaveURL(new RegExp(urlPattern), { timeout });
  } else {
    await expect(page).toHaveURL(urlPattern, { timeout });
  }
}

/**
 * Mock API response
 */
export async function mockApiResponse(
  page: Page,
  urlPattern: RegExp | string,
  responseData: any,
  status: number = 200
): Promise<void> {
  await page.route(urlPattern, (route) => {
    route.abort('blockedbyresponse');
    route.continue();
  });

  await page.on('route', (route) => {
    if (route.request().url().match(urlPattern)) {
      route.respond({
        status,
        contentType: 'application/json',
        body: JSON.stringify(responseData),
      });
    }
  });
}