// ⚠ Mock 数据，后续请替换成真实接口。
import { reactive, watch } from "vue";

export const useMockData = () => {
  // 从本地存储读取初始数据，如果没有则使用默认值
  const initialCategories = uni.getStorageSync("mockCategories") || [
    { id: 101, name: "分类 A", status: 1, sort: 1 },
    { id: 102, name: "分类 B", status: 1, sort: 2 },
  ];

  const initialArticles = uni.getStorageSync("mockArticles") || [
    {
      id: 1,
      title: "文章 1",
      summary: "摘要 1",
      cover: "",
      categoryId: 101,
      content: "<p>富文本内容 1</p>",
    },
    {
      id: 2,
      title: "文章 2",
      summary: "摘要 2",
      cover: "",
      categoryId: 102,
      content: "<p>富文本内容 2</p>",
    },
  ];

  const mockCategories = reactive(initialCategories);
  const mockArticles = reactive(initialArticles);

  // 监听数据变化并保存到本地存储
  watch(
    mockCategories,
    (newVal) => {
      uni.setStorageSync("mockCategories", JSON.parse(JSON.stringify(newVal)));
    },
    { deep: true },
  );

  watch(
    mockArticles,
    (newVal) => {
      uni.setStorageSync("mockArticles", JSON.parse(JSON.stringify(newVal)));
    },
    { deep: true },
  );

  const addCategory = (category) => {
    const newId =
      mockCategories.length > 0
        ? Math.max(...mockCategories.map((c) => c.id)) + 1
        : 101;
    mockCategories.push({ ...category, id: newId });
  };

  const updateCategory = (id, category) => {
    const index = mockCategories.findIndex((c) => c.id === id);
    if (index !== -1) {
      Object.assign(mockCategories[index], category);
    }
  };

  const addArticle = (article) => {
    const newId =
      mockArticles.length > 0
        ? Math.max(...mockArticles.map((a) => a.id)) + 1
        : 1;
    mockArticles.push({ ...article, id: newId });
  };

  const updateArticle = (id, article) => {
    const index = mockArticles.findIndex((a) => a.id === id);
    if (index !== -1) {
      Object.assign(mockArticles[index], article);
    }
  };

  return {
    mockCategories,
    mockArticles,
    addCategory,
    updateCategory,
    addArticle,
    updateArticle,
  };
};

// 单例模式，确保全局共享状态
const mockStore = useMockData();
export default mockStore;