import type { Article, Product, CaseItem, ApiEnvelope, PageResult } from '~/types'

/**
 * CMS 数据请求
 * 封装文章、产品、案例等数据的获取逻辑
 * 代理接口统一在 server/api/ 下
 */
export function useCms() {
  /**
   * 文章列表
   * @param params.navigationId 导航栏目ID（从 getSiteInfo 的 topNavs 获取）
   * @param params.page 页码
   * @param params.limit 每页条数
   * @param params.keywords 搜索关键词
   */
  async function fetchArticles(params?: {
    navigationId?: number
    categoryId?: number
    page?: number
    limit?: number
    keywords?: string
  }) {
    const res = await $fetch<ApiEnvelope<PageResult<Article>> | PageResult<Article>>(
      '/api/article/list',
      { query: params }
    )

    const envelope = res as ApiEnvelope<PageResult<Article>>
    if (envelope?.data) {
      return envelope.data
    }
    return res as PageResult<Article>
  }

  /** 文章详情 */
  async function fetchArticleDetail(id: string | number) {
    const res = await $fetch<ApiEnvelope<Article> | Article>('/api/article/detail', {
      query: { id }
    })

    const envelope = res as ApiEnvelope<Article>
    return envelope?.data || (res as Article)
  }

  /**
   * 根据导航模型获取文章列表
   * model=article 的导航直接用 navigationId 查询
   */
  async function fetchArticlesByNav(navigationId: number, page = 1, limit = 10) {
    return fetchArticles({ navigationId, page, limit })
  }

  /** 产品列表 */
  async function fetchProducts(params?: {
    categoryId?: number
    navigationId?: number
    page?: number
    limit?: number
    keywords?: string
  }) {
    const res = await $fetch<ApiEnvelope<PageResult<Product>> | PageResult<Product>>(
      '/api/product/list',
      { query: params }
    )

    const envelope = res as ApiEnvelope<PageResult<Product>>
    if (envelope?.data) {
      return envelope.data
    }
    return res as PageResult<Product>
  }

  /** 产品详情 */
  async function fetchProductDetail(id: string | number) {
    const res = await $fetch<ApiEnvelope<Product> | Product>('/api/product/detail', {
      query: { id }
    })

    const envelope = res as ApiEnvelope<Product>
    return envelope?.data || (res as Product)
  }

  /** 案例列表 */
  async function fetchCases(params?: {
    categoryId?: number
    navigationId?: number
    page?: number
    limit?: number
  }) {
    const res = await $fetch<ApiEnvelope<PageResult<CaseItem>> | PageResult<CaseItem>>(
      '/api/case/list',
      { query: params }
    )

    const envelope = res as ApiEnvelope<PageResult<CaseItem>>
    if (envelope?.data) {
      return envelope.data
    }
    return res as PageResult<CaseItem>
  }

  /** 案例详情 */
  async function fetchCaseDetail(id: string | number) {
    const res = await $fetch<ApiEnvelope<CaseItem> | CaseItem>('/api/case/detail', {
      query: { id }
    })

    const envelope = res as ApiEnvelope<CaseItem>
    return envelope?.data || (res as CaseItem)
  }

  /** 提交表单/留言 */
  async function submitForm(data: Record<string, unknown>) {
    const res = await $fetch<ApiEnvelope>('/api/form/submit', {
      method: 'POST',
      body: data
    })

    return res
  }

  return {
    fetchArticles,
    fetchArticleDetail,
    fetchArticlesByNav,
    fetchProducts,
    fetchProductDetail,
    fetchCases,
    fetchCaseDetail,
    submitForm
  }
}