import { describe, expect, it } from "vitest";

import type { SerializedBlock } from "@/lib/blocks";

import {
  createEditorBlock,
  duplicateBlock,
  moveBlock,
  moveBlockTo,
} from "./draft";

const blocks: SerializedBlock[] = ["a", "b", "c"].map((id, sortOrder) => ({
  id,
  type: "separator",
  schemaVersion: 1,
  config: {},
  sortOrder,
}));

describe("editor block operations", () => {
  it("moves blocks with keyboard-friendly relative operations", () => {
    expect(moveBlock(blocks, "b", -1).map((block) => block.id)).toEqual(["b", "a", "c"]);
    expect(moveBlock(blocks, "a", -1)).toEqual(blocks);
    expect(moveBlock(blocks, "b", 1).map((block) => block.sortOrder)).toEqual([0, 1, 2]);
  });

  it("supports pointer drop targets and duplication with stable order", () => {
    expect(moveBlockTo(blocks, "a", "c").map((block) => block.id)).toEqual(["b", "c", "a"]);
    expect(duplicateBlock(blocks, "b", "copy").map((block) => block.id)).toEqual(["a", "b", "copy", "c"]);
  });

  it("requires a configured source for data-backed blocks", () => {
    expect(createEditorBlock("comparison-chart")).toBeNull();
    expect(createEditorBlock("heading", undefined, "heading-id")).toMatchObject({
      id: "heading-id",
      type: "heading",
      config: { text: "หัวข้อใหม่" },
    });
  });
});