// @vitest-environment node
// No DOM needed — codeBlockText is a pure string extractor. It lives in
// block-renderer.tsx (exported for this test); the component's React import
// chain is mocked at the boundary.
import { describe, expect, it, vi } from "vitest";

// The renderer pulls in a large component tree (next/link, react-query,
// lucide, the database view, Tiptap). None of it matters to codeBlockText,
// so stub the heavy leaves to keep the import light + deterministic.
vi.mock("next/link", () => ({ default: (p: object) => p }));
vi.mock("@tanstack/react-query", () => ({
  useQuery: () => ({ data: undefined }),
  useInfiniteQuery: () => ({ data: undefined }),
  useQueryClient: () => ({ invalidateQueries: vi.fn() }),
}));
vi.mock("@/lib/api", () => ({
  apiFetch: vi.fn(async () => ({ data: [] })),
  blockApi: { update: vi.fn(async () => ({})) },
  uploadFile: vi.fn(),
}));

import { codeBlockText } from "@/components/editor/block-renderer";

describe("codeBlockText (code block content → editable plain text)", () => {
  it("returns a raw string content verbatim (web edits)", () => {
    expect(codeBlockText("const x = 1;")).toBe("const x = 1;");
    expect(codeBlockText("")).toBe("");
  });

  it("unwraps the API/AI canonical { text } envelope (slash-pick / AI apply)", () => {
    expect(codeBlockText({ text: "function f() {}\n" })).toBe("function f() {}\n");
    expect(codeBlockText({ text: "" })).toBe("");
  });

  it("falls back to pretty JSON for other object content", () => {
    expect(codeBlockText({ a: 1 })).toBe(JSON.stringify({ a: 1 }, null, 2));
  });

  it("handles null / undefined content as empty string", () => {
    expect(codeBlockText(null)).toBe("");
    expect(codeBlockText(undefined)).toBe("");
    expect(codeBlockText({})).toBe(JSON.stringify({}, null, 2));
  });

  it("does not confuse an object with a non-string .text field for empty", () => {
    // { text: 42 } is not a string envelope → falls back to JSON.
    expect(codeBlockText({ text: 42 })).toBe(JSON.stringify({ text: 42 }, null, 2));
  });
});