import { HomeworkAssignmentForm } from "@/modules/homework/components/homework-assignment-form"
import { getExams } from "@/modules/exams/data-access"
import { getTeacherClasses } from "@/modules/classes/data-access"
import { EmptyState } from "@/shared/components/ui/empty-state"
import { FileQuestion } from "lucide-react"

export const dynamic = "force-dynamic"

export default async function CreateHomeworkAssignmentPage() {
  const [exams, classes] = await Promise.all([getExams({}), getTeacherClasses()])
  const options = exams.map((e) => ({ id: e.id, title: e.title }))

  return (
    <div className="flex h-full flex-col space-y-8 p-8">
      <div className="flex items-center justify-between">
        <div>
          <h2 className="text-2xl font-bold tracking-tight">Create Assignment</h2>
          <p className="text-muted-foreground">Dispatch homework from an existing exam.</p>
        </div>
      </div>

      {options.length === 0 ? (
        <EmptyState
          title="No exams available"
          description="Create an exam first, then dispatch it as homework."
          icon={FileQuestion}
          action={{ label: "Create Exam", href: "/teacher/exams/create" }}
        />
      ) : classes.length === 0 ? (
        <EmptyState
          title="No classes available"
          description="Create a class first, then publish homework to that class."
          icon={FileQuestion}
          action={{ label: "Go to Classes", href: "/teacher/classes/my" }}
        />
      ) : (
        <HomeworkAssignmentForm exams={options} classes={classes} />
      )}
    </div>
  )
}