import { defineStore } from "pinia"
import { reactive, ref } from "vue"
import type { PostItem, PostDetail, Pagination } from "../type"
import { getPostController } from "../api/post-controller"
import type { ResponsePostVo, ResponsePageVoListPostVo, PostVo } from "../api/models"

function mapPostVo(v: PostVo): PostItem {
  const now = new Date()
  const pub = v.publishTime ? new Date(v.publishTime) : new Date(0)
  const isToday =
    pub.getFullYear() === now.getFullYear() &&
    pub.getMonth() === now.getMonth() &&
    pub.getDate() === now.getDate()
  const tags: string[] = []
  if (v.expertIsRealname) tags.push('已认证')
  return {
    id: v.id ?? '',
    title: v.title ?? '',
    expertName: v.expertName ?? '',
    expertAvatar: v.expertAvatar ?? '',
    expertLevel: v.expertLevel ?? 'gold',
    expertIsRealname: v.expertIsRealname ?? false,
    tags,
    price: v.price ?? 0,
    publishTime: v.publishTime ?? '',
    viewCount: v.viewCount ?? 0,
    isPublic: v.isPublic ?? false,
    hitStatus: v.hitStatus ?? 'pending',
    isTodayNew: isToday,
    expireTime: v.expireTime ?? '',
  }
}

export const usePostStore = defineStore('post', () => {
  const posts = ref<PostItem[]>([])
  const currentDetail = ref<PostDetail | null>(null)
  const currentStatus = ref('all')
  const searchKeyword = ref('')
  const pagination = reactive<Pagination>({ page: 1, pageSize: 10, total: 0 })
  const loading = ref(false)

  async function fetchPosts(status?: string, keyword?: string): Promise<void> {
    if (status !== undefined) currentStatus.value = status
    if (keyword !== undefined) searchKeyword.value = keyword
    loading.value = true
    try {
      const res: ResponsePageVoListPostVo = await getPostController().listPosts({
        status: currentStatus.value,
        keyword: searchKeyword.value,
        pageNum: pagination.page,
        pageSize: pagination.pageSize,
      })
      if (res.code === 200 && res.data) {
        posts.value = (res.data.data ?? []).map(mapPostVo)
        pagination.total = res.data.total ?? 0
      }
    } catch {
      posts.value = []
    } finally {
      loading.value = false
    }
  }

  async function fetchPostDetail(id: string): Promise<void> {
    loading.value = true
    try {
      const res: ResponsePostVo = await getPostController().getPostDetail(Number(id))
      if (res.code === 200 && res.data) {
        const v = res.data
        currentDetail.value = {
          id: v.id ?? '',
          title: v.title ?? '',
          contentIntro: v.contentIntro ?? '',
          contentPaid: v.contentPaid ?? '',
          price: v.price ?? 0,
          isPaid: v.isPaid ?? false,
          isPublic: v.isPublic ?? false,
          hitStatus: v.hitStatus ?? 'pending',
          publishTime: v.publishTime ?? '',
          expireTime: v.expireTime ?? '',
          expert: {
            name: v.expertName ?? '',
            avatar: v.expertAvatar ?? '',
            level: v.expertLevel ?? 'gold',
            isRealname: v.expertIsRealname ?? false,
            tags: v.expertIsRealname ? ['已认证'] : [],
          },
          previousPosts: [],
        }
      } else {
        currentDetail.value = null
      }
    } catch {
      currentDetail.value = null
    } finally {
      loading.value = false
    }
  }

  function loadMore(): void {
    pagination.page++
    fetchPosts()
  }

  return { posts, currentDetail, currentStatus, searchKeyword, pagination, loading, fetchPosts, fetchPostDetail, loadMore }
})