import { expect, test } from "@playwright/test";
import {
  CANVAS_GRID_SNAP_SIZE,
  resolveCanvasGridSnapPosition,
} from "@/lib/canvas/grid-snap";

test.describe("video canvas grid snap", () => {
  test("snaps drag displacement to ten world units without changing the node origin offset", () => {
    expect(CANVAS_GRID_SNAP_SIZE).toBe(10);
    expect(
      resolveCanvasGridSnapPosition({
        deltaX: 38,
        deltaY: 34,
        enabled: true,
        startX: 6504,
        startY: 60,
      })
    ).toEqual({ x: 6544, y: 90 });
  });

  test("keeps free dragging on integer world coordinates when snapping is disabled", () => {
    expect(
      resolveCanvasGridSnapPosition({
        deltaX: 38.2,
        deltaY: 35.7,
        enabled: false,
        startX: 6504,
        startY: 60,
      })
    ).toEqual({ x: 6542, y: 96 });
  });
});