import { addNotification } from "@/lib/api/notifications"
import { allow, deny } from "@/lib/policy/assert"
import { useAuthStore } from "@/store/auth"
import { usePostStore } from "@/store/posts"

export function listPosts() {
  return usePostStore.getState().posts
}

export function getPostById(postId: string) {
  return usePostStore.getState().posts.find((post) => post.id === postId)
}

export function listPostsByAuthor(userId: string) {
  return usePostStore.getState().posts.filter((post) => post.author.id === userId)
}

export function togglePostLike(postId: string) {
  const user = useAuthStore.getState().user
  if (!user) {
    return deny("AUTH_REQUIRED", "请先登录")
  }

  const post = usePostStore.getState().posts.find((item) => item.id === postId)
  if (!post) {
    return deny("NOT_FOUND", "帖子不存在")
  }

  const shouldNotify = !post.liked

  usePostStore.getState().togglePostLike(postId)

  if (shouldNotify) {
    addNotification({
      type: "community",
      title: "帖子收到点赞",
      content: `《${post.title}》有新的点赞`,
      link: `/post/${post.id}`,
    })
  }

  return allow()
}