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

import {
  extractThinkingMarkup,
  getReasoningText,
  isReasoningStreaming,
} from "./transforms";
import type { ConversationMessage } from "./types";

const message = (parts: ConversationMessage["parts"]): ConversationMessage => ({
  id: "message-1",
  parts,
  role: "assistant",
});

describe("reasoning traces", () => {
  test("extracts completed and streaming MiniMax think blocks", () => {
    expect(
      extractThinkingMarkup(
        "<think>First thought</think><think>Current thought"
      )
    ).toBe("First thought\n\nCurrent thought");
  });

  test("combines native reasoning with inline thinking", () => {
    expect(
      getReasoningText(
        message([
          { state: "streaming", text: "Native thought", type: "reasoning" },
          { state: "streaming", text: "<think>Inline thought", type: "text" },
        ])
      )
    ).toBe("Native thought\n\nInline thought");
  });

  test("recognizes an open streamed think block as live reasoning", () => {
    expect(
      isReasoningStreaming(
        message([{ state: "streaming", text: "<think>Working", type: "text" }])
      )
    ).toBe(true);
  });
});