import type { Metadata } from "next"
import { getTranslations } from "next-intl/server"

import { requirePermission } from "@/shared/lib/auth-guard"
import { Permissions } from "@/shared/types/permissions"
import { getUserAnnouncementsPageData } from "@/modules/announcements/data-access"
import { AnnouncementList } from "@/modules/announcements/components/announcement-list"
import { AnnouncementsServiceProvider } from "@/modules/announcements/components/announcements-service-context"

export const dynamic = "force-dynamic"

export async function generateMetadata(): Promise<Metadata> {
  const t = await getTranslations("announcements")
  return { title: t("title.list"), description: t("description.list") }
}

const PAGE_SIZE = 12

export default async function AnnouncementsPage({
  searchParams,
}: {
  searchParams: Promise<{ page?: string; status?: string }>
}) {
  const t = await getTranslations("announcements")
  const ctx = await requirePermission(Permissions.ANNOUNCEMENT_READ)

  const sp = await searchParams
  const requestedPage = Number(sp.page)
  const page = Number.isFinite(requestedPage) && requestedPage > 0 ? Math.floor(requestedPage) : 1

  const { items, total, page: currentPage, pageSize } = await getUserAnnouncementsPageData(
    ctx.userId,
    ctx.dataScope,
    page,
    PAGE_SIZE
  )

  // 构建分页 URL：保留 ?status= 过滤参数（与 AnnouncementList 的过滤机制一致）
  const buildPageHref = (targetPage: number): string => {
    const params = new URLSearchParams()
    if (sp.status) params.set("status", sp.status)
    if (targetPage > 1) params.set("page", String(targetPage))
    const qs = params.toString()
    return qs ? `/announcements?${qs}` : "/announcements"
  }

  return (
    <AnnouncementsServiceProvider>
      <div className="flex h-full flex-col space-y-8 p-8">
        <div>
          <h2 className="text-2xl font-bold tracking-tight">{t("title.list")}</h2>
          <p className="text-muted-foreground">
            {t("description.list")}
          </p>
        </div>
        <AnnouncementList
          announcements={items}
          detailHrefPrefix="/announcements"
          initialStatus={sp.status === "published" || sp.status === "draft" || sp.status === "archived" ? sp.status : "all"}
          pagination={{
            page: currentPage,
            pageSize,
            total,
            buildPageHref,
          }}
        />
      </div>
    </AnnouncementsServiceProvider>
  )
}