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

export interface SwipeOptions {
  startX: number;
  startY: number;
  endX: number;
  endY: number;
  duration: number;
}

export interface PinchOptions {
  centerX: number;
  centerY: number;
  startDistance: number;
  endDistance: number;
  duration: number;
}

export interface DragOptions {
  source: Locator;
  target: Locator;
  duration: number;
}

export class GestureSimulator {
  constructor(private page: Page) {}

  async swipe(options: SwipeOptions): Promise<void> {
    const { startX, startY, endX, endY, duration } = options;
    
    await this.page.touchscreen.tap(startX, startY);
    
    const steps = 10;
    const stepDuration = duration / steps;
    
    for (let i = 1; i <= steps; i++) {
      const x = startX + (endX - startX) * (i / steps);
      const y = startY + (endY - startY) * (i / steps);
      
      await this.page.touchscreen.touchMove(x, y);
      await this.page.waitForTimeout(stepDuration);
    }
    
    await this.page.touchscreen.touchEnd();
  }

  async quickSwipeDown(): Promise<void> {
    const viewport = this.page.viewportSize();
    if (!viewport) return;
    
    await this.swipe({
      startX: viewport.width / 2,
      startY: viewport.height * 0.3,
      endX: viewport.width / 2,
      endY: viewport.height * 0.7,
      duration: 300,
    });
  }

  async slowSwipeUp(): Promise<void> {
    const viewport = this.page.viewportSize();
    if (!viewport) return;
    
    await this.swipe({
      startX: viewport.width / 2,
      startY: viewport.height * 0.7,
      endX: viewport.width / 2,
      endY: viewport.height * 0.3,
      duration: 800,
    });
  }
}