import { describe, expect, it } from "vitest";
import { readFileSync } from "node:fs";
import { resolve } from "node:path";

const source = readFileSync(resolve(__dirname, "./OfficePreviewWorkspace.vue"), "utf8");
const hostSource = readFileSync(resolve(__dirname, "../components/OnlyOfficeViewer.vue"), "utf8");

describe("OfficePreviewWorkspace contract", () => {
  it("uses a full-page viewer without dialogs, cards, downloads, or browser iframe fallback", () => {
    expect(source).toContain("OnlyOfficeViewer");
    expect(source).not.toContain("el-dialog");
    expect(source).not.toContain("downloadDocumentVersion");
    expect(source).not.toContain("downloadAttachment");
    expect(source).not.toContain("<iframe");
    expect(source).toContain('route.name === "OfficeCollaborationRevisionPreview"');
    expect(source).toContain("fetchCollaborationRevisionOnlyOfficeConfig");
  });

  it("destroys signed configuration on deactivation, server changes, and unmount", () => {
    expect(source).toContain("onDeactivated");
    expect(source).toContain("DESKTOP_SERVER_URL_CHANGED_EVENT");
    expect(source.match(/destroyViewer\(\)/g)?.length).toBeGreaterThanOrEqual(3);
    expect(hostSource).toContain('frameRef.value.src = "about:blank"');
  });

  it("closes a desktop transient preview task before falling back to browser history", () => {
    expect(source).toContain("inject(workspaceTaskControllerKey, null)");
    expect(source).toContain("workspaceTaskController?.closeTransientTask(route.path)");
    expect(source).toContain('workspaceTaskController ? "关闭预览并返回" : "返回"');
    expect(source).toContain("router.back()");
  });
});