import { describe, expect, it } from "vitest";
import {
  clearFileTreeClipboardPayload,
  decodeFileTreeClipboardPayload,
  encodeFileTreeClipboardPayload,
  inferPasteTargetDocId,
  isTextInputTarget,
} from "./clipboard";

describe("file-tree clipboard payload", () => {
  it("可编码/解码", () => {
    const payload = { type: "mnote-file-tree" as const, version: 1 as const, action: "copy" as const, rowIds: ["doc:a", "asset:x"] };
    const text = encodeFileTreeClipboardPayload(payload);
    expect(decodeFileTreeClipboardPayload(text)).toEqual(payload);
    const cutPayload = { ...payload, action: "cut" as const };
    expect(decodeFileTreeClipboardPayload(encodeFileTreeClipboardPayload(cutPayload))).toEqual(cutPayload);
    expect(
      decodeFileTreeClipboardPayload(
        encodeFileTreeClipboardPayload({ ...payload, action: "move" as any }),
      ),
    ).toBeNull();
    expect(decodeFileTreeClipboardPayload("not-a-payload")).toBeNull();
  });

  it("可清空内存剪贴板", async () => {
    await clearFileTreeClipboardPayload();
  });
});

describe("inferPasteTargetDocId", () => {
  it("focused 为 doc/index/asset 三分支覆盖", () => {
    const rowById = new Map<string, any>();
    rowById.set("asset:x", { kind: "asset", rowId: "asset:x", docId: "d1", asset: { id: "x" } });
    expect(inferPasteTargetDocId({ focusedRowId: "doc:d2", rowById, activeDocId: "active" })).toBe("d2");
    expect(inferPasteTargetDocId({ focusedRowId: "index:d3", rowById, activeDocId: "active" })).toBe("d3");
    expect(inferPasteTargetDocId({ focusedRowId: "asset:x", rowById, activeDocId: "active" })).toBe("d1");
  });

  it("无 focused 时回退 activeDocId", () => {
    const rowById = new Map<string, any>();
    expect(inferPasteTargetDocId({ focusedRowId: null, rowById, activeDocId: "active" })).toBe("active");
    expect(inferPasteTargetDocId({ focusedRowId: null, rowById, activeDocId: null })).toBeNull();
  });
});

describe("isTextInputTarget", () => {
  it("input/textarea/contenteditable 不拦截快捷键", () => {
    const input = document.createElement("input");
    const textarea = document.createElement("textarea");
    const div = document.createElement("div");
    div.setAttribute("contenteditable", "true");
    expect(isTextInputTarget(input)).toBe(true);
    expect(isTextInputTarget(textarea)).toBe(true);
    expect(isTextInputTarget(div)).toBe(true);
    expect(isTextInputTarget(document.createElement("button"))).toBe(false);
  });
});