import { Page, Locator } from '@playwright/test';
import { TestConfig } from '../types';
import { defaultConfig } from '../config/base.config';

export class BasePage {
  readonly page: Page;
  readonly config: TestConfig;
  readonly url: string;

  constructor(page: Page, url: string, config?: TestConfig) {
    this.page = page;
    this.url = url;
    this.config = config || defaultConfig;
  }

  async navigate(): Promise<void> {
    await this.page.goto(this.url, { waitUntil: 'networkidle', timeout: this.config.timeout });
  }

  async waitForLoadState(state: 'load' | 'domcontentloaded' | 'networkidle' = 'load'): Promise<void> {
    await this.page.waitForLoadState(state, { timeout: this.config.timeout });
  }

  async click(locator: Locator | string): Promise<void> {
    const element = typeof locator === 'string' ? this.page.locator(locator) : locator;
    await element.click({ timeout: this.config.timeout });
  }

  async fill(locator: Locator | string, value: string): Promise<void> {
    const element = typeof locator === 'string' ? this.page.locator(locator) : locator;
    await element.fill(value);
  }

  async getText(locator: Locator | string): Promise<string> {
    const element = typeof locator === 'string' ? this.page.locator(locator) : locator;
    return await element.textContent() || '';
  }

  async isVisible(locator: Locator | string): Promise<boolean> {
    const element = typeof locator === 'string' ? this.page.locator(locator) : locator;
    return await element.isVisible();
  }

  async waitForElement(locator: Locator | string, timeout?: number): Promise<void> {
    const element = typeof locator === 'string' ? this.page.locator(locator) : locator;
    await element.waitFor({ state: 'visible', timeout: timeout || this.config.timeout });
  }

  async scrollToElement(locator: Locator | string): Promise<void> {
    const element = typeof locator === 'string' ? this.page.locator(locator) : locator;
    await element.scrollIntoViewIfNeeded();
  }

  async takeScreenshot(filename: string): Promise<void> {
    const screenshotDir = 'test-framework/reports/screenshots';
    await this.page.screenshot({ path: `${screenshotDir}/${filename}` });
  }

  async hover(locator: Locator | string): Promise<void> {
    const element = typeof locator === 'string' ? this.page.locator(locator) : locator;
    await element.hover();
  }

  async getCurrentURL(): Promise<string> {
    return this.page.url();
  }

  async getTitle(): Promise<string> {
    return await this.page.title();
  }

  async getAttribute(locator: Locator | string, attribute: string): Promise<string | null> {
    const element = typeof locator === 'string' ? this.page.locator(locator) : locator;
    return await element.getAttribute(attribute);
  }

  async measurePerformance(): Promise<{
    loadTime: number;
    domContentLoaded: number;
    firstPaint: number;
    firstContentfulPaint: number;
  }> {
    const metrics = await this.page.evaluate(() => {
      const performance = window.performance;
      const timing = performance.timing;
      const navigation = performance.getEntriesByType('navigation')[0] as PerformanceNavigationTiming;

      return {
        loadTime: timing.loadEventEnd - timing.navigationStart,
        domContentLoaded: timing.domContentLoadedEventEnd - timing.navigationStart,
        firstPaint: navigation ? navigation.loadEventEnd - navigation.fetchStart : 0,
        firstContentfulPaint: navigation ? navigation.domContentLoadedEventEnd - navigation.fetchStart : 0,
      };
    });

    return metrics;
  }
}