// app/composables/apiArticles.js
// 统一封装“文章相关”接口，基于你已有的 useApi()

import { useApi } from './useApi'

/**
 * RealWorld 风格的后端：
 * - 创建：POST /articles               body: { article: {...} }
 * - 获取明细：GET /articles/:slug
 * - 更新：PUT /articles/:slug          body: { article: {...} }
 * - 删除：DELETE /articles/:slug
 * - 列表：GET /articles                params: { tag, author, favorited, limit, offset }
 * - 订阅流：GET /articles/feed         params: 同上（需要登录）
 * - 点赞：POST /articles/:slug/favorite
 * - 取消赞：DELETE /articles/:slug/favorite
 * - 标签：GET /tags
 */
export function useArticlesApi() {
  const api = useApi()

  // 表单 -> 后端 article payload
  const toPayload = (form) => ({
    title: form.title?.trim() || '',
    description: form.description?.trim() || '',
    body: form.body ?? '',
    tagList: Array.isArray(form.tagList) ? form.tagList : []
  })

  // 创建
  const create = (formOrArticle) => {
    const article =
      formOrArticle && formOrArticle.title !== undefined
        ? toPayload(formOrArticle)
        : (formOrArticle || {})
    return api.post('/articles', { article })
  }

  // 更新
  const update = (slug, formOrArticle) => {
    const article =
      formOrArticle && formOrArticle.title !== undefined
        ? toPayload(formOrArticle)
        : (formOrArticle || {})
    return api.put(`/articles/${encodeURIComponent(slug)}`, { article })
  }

  // 删除
  const remove = (slug) => api.del(`/articles/${encodeURIComponent(slug)}`)

  // 明细
  const get = (slug) => api.get(`/articles/${encodeURIComponent(slug)}`)

  // 列表（公共）
  const list = (params = {}) => api.get('/articles', params)

  // 订阅流（需要登录）
  const feed = (params = {}) => api.get('/articles/feed', params)

  // 喜欢/取消喜欢
  const addFavorite = (slug) => api.post(`/articles/${encodeURIComponent(slug)}/favorite`)
  const removeFavorite = (slug) => api.del(`/articles/${encodeURIComponent(slug)}/favorite`)

  // 标签列表
  const listTags = () => api.get('/tags')

  return {
    // 主要增删改查
    create, update, remove, get, list, feed,
    // 互动
    addFavorite, removeFavorite,
    // 其他
    listTags,
    // 工具（可选导出，发文页也能复用）
    toPayload
  }
}