import { notFound } from "next/navigation"
import type { Metadata } from "next"
import type { JSX } from "react"
import { getTranslations } from "next-intl/server"

import { requirePermission } from "@/shared/lib/auth-guard"
import { Permissions } from "@/shared/types/permissions"
import { getCoursePlanById } from "@/modules/course-plans/data-access"
import { getAdminClasses } from "@/modules/classes/data-access"
import { getAcademicYears, getStaffOptions, getSubjectOptions } from "@/modules/school/data-access"
import { CoursePlanForm } from "@/modules/course-plans/components/course-plan-form"

export async function generateMetadata(): Promise<Metadata> {
  const t = await getTranslations("coursePlans")
  return {
    title: `${t("edit.title")} - Next_Edu`,
    description: t("edit.description"),
  }
}

export const dynamic = "force-dynamic"

export default async function EditCoursePlanPage({
  params,
}: {
  params: Promise<{ id: string }>
}): Promise<JSX.Element> {
  const t = await getTranslations("coursePlans")
  // P0-2：admin 页面补充 requirePermission 校验
  const ctx = await requirePermission(Permissions.COURSE_PLAN_MANAGE)
  const { id } = await params

  const [plan, classes, subjects, teachers, academicYears] = await Promise.all([
    // P0-1：携带 scope 过滤
    getCoursePlanById(id, { userId: ctx.userId, isAdmin: true }),
    getAdminClasses(),
    getSubjectOptions(),
    getStaffOptions(),
    getAcademicYears(),
  ])

  if (!plan) notFound()

  return (
    <div className="flex h-full flex-col space-y-8 p-8">
      <div>
        <h2 className="text-2xl font-bold tracking-tight">{t("edit.title")}</h2>
        <p className="text-muted-foreground">{t("edit.description")}</p>
      </div>
      <CoursePlanForm
        mode="edit"
        plan={plan}
        classes={classes.map((c) => ({ id: c.id, name: c.name }))}
        subjects={subjects}
        teachers={teachers.map((tch) => ({ id: tch.id, name: tch.name }))}
        academicYears={academicYears.map((y) => ({ id: y.id, name: y.name }))}
        backHref={`/admin/course-plans/${plan.id}`}
        successHref={`/admin/course-plans/${plan.id}`}
      />
    </div>
  )
}
