// tests/question_core.test.mjs
import { describe, it, expect } from "vitest";
import { runQuestionGenerator } from "../src/question/question_core.mjs";

describe("runQuestionGenerator", () => {
  it("extracts questions from { questions: [...] } JSON", async () => {
    const fakeProvider = {
      async generate(prompt) {
        // we don't care about prompt content here, just the shape
        return JSON.stringify({
          questions: [
            "What is love?",
            "How can I serve others?",
          ],
        });
      },
    };

    const { questions, raw, parsed } = await runQuestionGenerator(
      "Some context chunk about service and love.",
      fakeProvider,
      { maxQuestions: 5 },
    );

    expect(Array.isArray(questions)).toBe(true);
    expect(questions.length).toBe(2);
    expect(questions[0]).toBe("What is love?");
    expect(questions[1]).toBe("How can I serve others?");
    expect(typeof raw).toBe("string");
    expect(parsed).toHaveProperty("questions");
  });

  it("handles array root JSON by treating it as a questions list", async () => {
    const fakeProvider = {
      async generate() {
        return JSON.stringify([
          "Question A?",
          "Question B?",
        ]);
      },
    };

    const { questions } = await runQuestionGenerator(
      "Another context chunk.",
      fakeProvider,
      { maxQuestions: 3 },
    );

    expect(questions).toEqual(["Question A?", "Question B?"]);
  });

  it("returns empty list on invalid JSON", async () => {
    const fakeProvider = {
      async generate() {
        return "this is not json";
      },
    };

    const { questions, parsed } = await runQuestionGenerator(
      "Context that triggers bad output.",
      fakeProvider,
      { maxQuestions: 3 },
    );

    expect(Array.isArray(questions)).toBe(true);
    expect(questions.length).toBe(0);
    expect(parsed).toHaveProperty("error", "invalid_json");
  });
});