import { describe, expect, test } from "bun:test";
import { createInitialAppState } from "@editor/initial-state";
import { neutralColorAdjustment } from "@core/adjustment-layer";
import { documentAddArtboardCommand, documentAddAdjustmentLayerCommand, documentSetAdjustmentCommand, documentDuplicateLayerCommand, documentMoveLayerCommand } from "./document";

const transform = { position: { x: 0, y: 0 }, scale: { x: 1, y: 1 }, rotation: 0 };
function stateWithAdjustment() {
  let state = documentAddArtboardCommand.execute({ state: createInitialAppState("test") }, { id: "board", name: "Board", bounds: { x: 0, y: 0, w: 10, h: 10 } });
  state = documentAddAdjustmentLayerCommand.execute({ state }, { artboardId: "board", layer: { id: "adjust", type: "adjustment", name: "Color", visible: true, locked: false, opacity: 1, transform, adjustment: neutralColorAdjustment } });
  return state;
}

describe("adjustment commands", () => {
  test("creates and selects a persistent adjustment node", () => {
    const state = stateWithAdjustment();
    expect(state.document.artboards[0]?.layers[0]?.type).toBe("adjustment");
    expect(state.editor.selection.layerIds).toEqual(["adjust"]);
  });
  test("validates edits and preserves locked layers", () => {
    const state = stateWithAdjustment();
    const changed = documentSetAdjustmentCommand.execute({ state }, { layerId: "adjust", adjustment: { ...neutralColorAdjustment, brightness: .25 } });
    const invalid = documentSetAdjustmentCommand.execute({ state: changed }, { layerId: "adjust", adjustment: { ...neutralColorAdjustment, contrast: 2 } });
    expect((changed.document.artboards[0]?.layers[0] as { adjustment: { brightness: number } }).adjustment.brightness).toBe(.25);
    expect(invalid).toBe(changed);
  });
  test("duplicates and moves adjustment nodes like tree siblings", () => {
    let state = stateWithAdjustment();
    state = documentDuplicateLayerCommand.execute({ state }, { layerId: "adjust", idByLayerId: { adjust: "copy" } });
    state = documentMoveLayerCommand.execute({ state }, { layerId: "copy", toArtboardId: "board", toIndex: 0 });
    expect(state.document.artboards[0]?.layers.map((layer) => [layer.id, layer.type])).toEqual([["copy", "adjustment"], ["adjust", "adjustment"]]);
  });
  test("rejects nested creation, movement, and grouping to preserve exact scope", () => {
    const state = stateWithAdjustment();
    const nested = documentAddAdjustmentLayerCommand.execute({ state }, { artboardId: "board", parentGroupId: "group", layer: { id: "nested", type: "adjustment", name: "Nested", visible: true, locked: false, opacity: 1, transform, adjustment: neutralColorAdjustment } });
    const moved = documentMoveLayerCommand.execute({ state }, { layerId: "adjust", toArtboardId: "board", toParentGroupId: "group", toIndex: 0 });
    expect(nested).toBe(state);
    expect(moved).toBe(state);
  });
});