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

import type { ReviewHistoryItem } from "@/lib/api/types";
import { latestReview, normalizeConflicts } from "./history";

const item = (
  conflicts: Record<string, unknown>[],
): ReviewHistoryItem => ({
  id: "00000000-0000-0000-0000-000000000001",
  project_id: "00000000-0000-0000-0000-000000000002",
  chapter_no: 128,
  conflicts,
});

describe("normalizeConflicts", () => {
  it("tightens loose dicts into ReviewConflict, preserving order", () => {
    const out = normalizeConflicts(
      item([
        {
          type: "设定违例",
          where: "第4段",
          refs: ["第30章"],
          suggestion: "统一血脉",
        },
        { type: "时间线倒错", where: "第8段", refs: [], suggestion: "调整" },
      ]),
    );
    expect(out).toEqual([
      { type: "设定违例", where: "第4段", refs: ["第30章"], suggestion: "统一血脉" },
      { type: "时间线倒错", where: "第8段", refs: [], suggestion: "调整" },
    ]);
  });

  it("fills safe defaults for missing/wrong-typed fields", () => {
    const out = normalizeConflicts(item([{ where: 42, refs: "x" }]));
    expect(out).toEqual([
      { type: "未分类", where: "", refs: [], suggestion: "" },
    ]);
  });

  it("returns [] for undefined item or missing conflicts", () => {
    expect(normalizeConflicts(undefined)).toEqual([]);
  });
});

describe("latestReview", () => {
  it("returns first item (history is newest-first)", () => {
    const a = item([]);
    const b = item([]);
    expect(latestReview([a, b])).toBe(a);
    expect(latestReview([])).toBeUndefined();
    expect(latestReview(undefined)).toBeUndefined();
  });
});