import {
  AlertDialog,
  AlertDialogAction,
  AlertDialogCancel,
  AlertDialogContent,
  AlertDialogDescription,
  AlertDialogFooter,
  AlertDialogHeader,
  AlertDialogTitle,
} from "@/components/ui/alert-dialog"
import { StatusBadge } from "@/components/question/StatusBadge"
import { TRANSITION_LABELS } from "@/lib/constants"
import type { Question, QuestionStatus } from "@/types/question"

interface StatusTransitionDialogProps {
  open: boolean
  onOpenChange: (open: boolean) => void
  question: Question | null
  targetStatus: QuestionStatus | null
  onConfirm: () => void
}

export function StatusTransitionDialog({
  open,
  onOpenChange,
  question,
  targetStatus,
  onConfirm,
}: StatusTransitionDialogProps) {
  if (!question || !targetStatus) return null

  const label = TRANSITION_LABELS[targetStatus]
  const description = getDescription(question.status, targetStatus)

  return (
    <AlertDialog open={open} onOpenChange={onOpenChange}>
      <AlertDialogContent>
        <AlertDialogHeader>
          <AlertDialogTitle>{label.title}</AlertDialogTitle>
          <AlertDialogDescription asChild>
            <div className="space-y-3">
              <p>{description}</p>
              <div className="flex items-center gap-2">
                <StatusBadge status={question.status} />
                <span className="text-muted-foreground">→</span>
                <StatusBadge status={targetStatus} />
              </div>
              <p className="text-xs text-muted-foreground">
                题目：{question.stem.length > 40 ? question.stem.slice(0, 40) + "..." : question.stem}
              </p>
            </div>
          </AlertDialogDescription>
        </AlertDialogHeader>
        <AlertDialogFooter>
          <AlertDialogCancel>取消</AlertDialogCancel>
          <AlertDialogAction onClick={onConfirm}>
            {label.action}
          </AlertDialogAction>
        </AlertDialogFooter>
      </AlertDialogContent>
    </AlertDialog>
  )
}

function getDescription(from: QuestionStatus, to: QuestionStatus): string {
  const descriptions: Record<string, string> = {
    "draft→reviewing": "提交后题目将进入审核队列，等待审核通过后才能发布。",
    "reviewing→published": "审核通过后题目将对所有用户可见，请确认题目内容无误。",
    "reviewing→draft": "将题目退回草稿状态，可以继续修改后重新提交。",
    "published→archived": "下架后题目将对用户不可见，但数据会保留。可随时恢复为草稿。",
    "archived→draft": "恢复为草稿后可以重新编辑并提交审核。",
  }
  return descriptions[`${from}→${to}`] ?? `确定要将题目状态从「${from}」改为「${to}」吗？`
}