// evaluation-target-action-dialogs.tsx
"use client"

import * as React from "react"
import { Loader2, AlertTriangle, Check, X, MessageSquare } from "lucide-react"
import { toast } from "sonner"

import {
  AlertDialog,
  AlertDialogAction,
  AlertDialogCancel,
  AlertDialogContent,
  AlertDialogDescription,
  AlertDialogFooter,
  AlertDialogHeader,
  AlertDialogTitle,
} from "@/components/ui/alert-dialog"
import {
  Dialog,
  DialogContent,
  DialogDescription,
  DialogFooter,
  DialogHeader,
  DialogTitle,
} from "@/components/ui/dialog"
import { Button } from "@/components/ui/button"
import { Textarea } from "@/components/ui/textarea"
import { Label } from "@/components/ui/label"
import { Badge } from "@/components/ui/badge"

import { 
  confirmEvaluationTargets, 
  excludeEvaluationTargets, 
  requestEvaluationReview 
} from "../service"
import { EvaluationTargetWithDepartments } from "@/db/schema"

// ----------------------------------------------------------------
// 확정 컨펌 다이얼로그
// ----------------------------------------------------------------
interface ConfirmTargetsDialogProps {
  open: boolean
  onOpenChange: (open: boolean) => void
  targets: EvaluationTargetWithDepartments[]
  onSuccess?: () => void
}

export function ConfirmTargetsDialog({
  open,
  onOpenChange,
  targets,
  onSuccess
}: ConfirmTargetsDialogProps) {
  const [isLoading, setIsLoading] = React.useState(false)

  // 확정 가능한 대상들 (consensusStatus가 true인 것들)
  const confirmableTargets = targets.filter(
    t => t.status === "PENDING" && t.consensusStatus === true
  )

  const handleConfirm = async () => {
    if (confirmableTargets.length === 0) return

    setIsLoading(true)
    try {
      const targetIds = confirmableTargets.map(t => t.id)
      const result = await confirmEvaluationTargets(targetIds)

      if (result.success) {
        toast.success(result.message)
        onSuccess?.()
        onOpenChange(false)
      } else {
        toast.error(result.error)
      }
    } catch (error) {
      toast.error("확정 처리 중 오류가 발생했습니다.")
    } finally {
      setIsLoading(false)
    }
  }

  return (
    <AlertDialog open={open} onOpenChange={onOpenChange}>
      <AlertDialogContent>
        <AlertDialogHeader>
          <AlertDialogTitle className="flex items-center gap-2">
            <Check className="h-5 w-5 text-green-600" />
            평가 대상 확정
          </AlertDialogTitle>
          <AlertDialogDescription asChild>
            <div className="space-y-3">
              <p>
                선택된 {targets.length}개 항목 중{" "}
                <span className="font-semibold text-green-600">
                  {confirmableTargets.length}개 항목
                </span>
                을 확정하시겠습니까?
              </p>
              
              {confirmableTargets.length !== targets.length && (
                <div className="p-3 bg-yellow-50 rounded-lg border border-yellow-200">
                  <p className="text-sm text-yellow-800">
                    <AlertTriangle className="h-4 w-4 inline mr-1" />
                    의견 일치 상태인 대기중 항목만 확정 가능합니다.
                    ({targets.length - confirmableTargets.length}개 항목 제외됨)
                  </p>
                </div>
              )}

              {confirmableTargets.length > 0 && (
                <div className="max-h-32 overflow-y-auto">
                  <div className="text-sm space-y-1">
                    {confirmableTargets.slice(0, 5).map(target => (
                      <div key={target.id} className="flex items-center gap-2">
                        <Badge variant="outline" className="text-xs">
                          {target.vendorCode}
                        </Badge>
                        <span className="text-xs">{target.vendorName}</span>
                      </div>
                    ))}
                    {confirmableTargets.length > 5 && (
                      <p className="text-xs text-muted-foreground">
                        ...외 {confirmableTargets.length - 5}개
                      </p>
                    )}
                  </div>
                </div>
              )}
            </div>
          </AlertDialogDescription>
        </AlertDialogHeader>
        <AlertDialogFooter>
          <AlertDialogCancel disabled={isLoading}>취소</AlertDialogCancel>
          <AlertDialogAction
            onClick={handleConfirm}
            disabled={isLoading || confirmableTargets.length === 0}
            className="bg-green-600 hover:bg-green-700"
          >
            {isLoading && <Loader2 className="mr-2 h-4 w-4 animate-spin" />}
            확정 ({confirmableTargets.length})
          </AlertDialogAction>
        </AlertDialogFooter>
      </AlertDialogContent>
    </AlertDialog>
  )
}

// ----------------------------------------------------------------
// 제외 컨펌 다이얼로그
// ----------------------------------------------------------------
interface ExcludeTargetsDialogProps {
  open: boolean
  onOpenChange: (open: boolean) => void
  targets: EvaluationTargetWithDepartments[]
  onSuccess?: () => void
}

export function ExcludeTargetsDialog({
  open,
  onOpenChange,
  targets,
  onSuccess
}: ExcludeTargetsDialogProps) {
  const [isLoading, setIsLoading] = React.useState(false)

  // 제외 가능한 대상들 (PENDING 상태인 것들)
  const excludableTargets = targets.filter(t => t.status === "PENDING")

  const handleExclude = async () => {
    if (excludableTargets.length === 0) return

    setIsLoading(true)
    try {
      const targetIds = excludableTargets.map(t => t.id)
      const result = await excludeEvaluationTargets(targetIds)

      if (result.success) {
        toast.success(result.message)
        onSuccess?.()
        onOpenChange(false)
      } else {
        toast.error(result.error)
      }
    } catch (error) {
      toast.error("제외 처리 중 오류가 발생했습니다.")
    } finally {
      setIsLoading(false)
    }
  }

  return (
    <AlertDialog open={open} onOpenChange={onOpenChange}>
      <AlertDialogContent>
        <AlertDialogHeader>
          <AlertDialogTitle className="flex items-center gap-2">
            <X className="h-5 w-5 text-red-600" />
            평가 대상 제외
          </AlertDialogTitle>
          <AlertDialogDescription asChild>
            <div className="space-y-3">
              <p>
                선택된 {targets.length}개 항목 중{" "}
                <span className="font-semibold text-red-600">
                  {excludableTargets.length}개 항목
                </span>
                을 제외하시겠습니까?
              </p>

              {excludableTargets.length !== targets.length && (
                <div className="p-3 bg-yellow-50 rounded-lg border border-yellow-200">
                  <p className="text-sm text-yellow-800">
                    <AlertTriangle className="h-4 w-4 inline mr-1" />
                    대기중 상태인 항목만 제외 가능합니다.
                    ({targets.length - excludableTargets.length}개 항목 제외됨)
                  </p>
                </div>
              )}

              {excludableTargets.length > 0 && (
                <div className="max-h-32 overflow-y-auto">
                  <div className="text-sm space-y-1">
                    {excludableTargets.slice(0, 5).map(target => (
                      <div key={target.id} className="flex items-center gap-2">
                        <Badge variant="outline" className="text-xs">
                          {target.vendorCode}
                        </Badge>
                        <span className="text-xs">{target.vendorName}</span>
                      </div>
                    ))}
                    {excludableTargets.length > 5 && (
                      <p className="text-xs text-muted-foreground">
                        ...외 {excludableTargets.length - 5}개
                      </p>
                    )}
                  </div>
                </div>
              )}
            </div>
          </AlertDialogDescription>
        </AlertDialogHeader>
        <AlertDialogFooter>
          <AlertDialogCancel disabled={isLoading}>취소</AlertDialogCancel>
          <AlertDialogAction
            onClick={handleExclude}
            disabled={isLoading || excludableTargets.length === 0}
            className="bg-red-600 hover:bg-red-700"
          >
            {isLoading && <Loader2 className="mr-2 h-4 w-4 animate-spin" />}
            제외 ({excludableTargets.length})
          </AlertDialogAction>
        </AlertDialogFooter>
      </AlertDialogContent>
    </AlertDialog>
  )
}

// ----------------------------------------------------------------
// 의견 요청 다이얼로그
// ----------------------------------------------------------------
interface RequestReviewDialogProps {
  open: boolean
  onOpenChange: (open: boolean) => void
  targets: EvaluationTargetWithDepartments[]
  onSuccess?: () => void
}

export function RequestReviewDialog({
  open,
  onOpenChange,
  targets,
  onSuccess
}: RequestReviewDialogProps) {
  const [isLoading, setIsLoading] = React.useState(false)
  const [message, setMessage] = React.useState("")

  // 의견 요청 가능한 대상들 (PENDING 상태인 것들)
  const reviewableTargets = targets.filter(t => t.status === "PENDING")

  // 담당자 이메일들 수집
  const reviewerEmails = React.useMemo(() => {
    const emails = new Set<string>()
    reviewableTargets.forEach(target => {
      if (target.orderReviewerEmail) emails.add(target.orderReviewerEmail)
      if (target.procurementReviewerEmail) emails.add(target.procurementReviewerEmail)
      if (target.qualityReviewerEmail) emails.add(target.qualityReviewerEmail)
      if (target.designReviewerEmail) emails.add(target.designReviewerEmail)
      if (target.csReviewerEmail) emails.add(target.csReviewerEmail)
    })
    return Array.from(emails)
  }, [reviewableTargets])

  const handleRequestReview = async () => {
    if (reviewableTargets.length === 0) return

    setIsLoading(true)
    try {
      const targetIds = reviewableTargets.map(t => t.id)
      const result = await requestEvaluationReview(targetIds, message)

      if (result.success) {
        toast.success(result.message)
        onSuccess?.()
        onOpenChange(false)
        setMessage("")
      } else {
        toast.error(result.error)
      }
    } catch (error) {
      toast.error("의견 요청 중 오류가 발생했습니다.")
    } finally {
      setIsLoading(false)
    }
  }

  return (
    <Dialog open={open} onOpenChange={onOpenChange}>
      <DialogContent className="sm:max-w-md">
        <DialogHeader>
          <DialogTitle className="flex items-center gap-2">
            <MessageSquare className="h-5 w-5 text-blue-600" />
            평가 의견 요청
          </DialogTitle>
          <DialogDescription>
            선택된 평가 대상에 대한 의견을 담당자들에게 요청합니다.
          </DialogDescription>
        </DialogHeader>

        <div className="space-y-4">
          {/* 요약 정보 */}
          <div className="p-3 bg-blue-50 rounded-lg border border-blue-200">
            <div className="text-sm space-y-1">
              <p>
                <span className="font-medium">요청 대상:</span> {reviewableTargets.length}개 평가 항목
              </p>
              <p>
                <span className="font-medium">받는 사람:</span> {reviewerEmails.length}명의 담당자
              </p>
            </div>
          </div>

          {/* 메시지 입력 */}
          <div className="space-y-2">
            <Label htmlFor="review-message">추가 메시지 (선택사항)</Label>
            <Textarea
              id="review-message"
              placeholder="담당자들에게 전달할 추가 메시지를 입력하세요..."
              value={message}
              onChange={(e) => setMessage(e.target.value)}
              rows={3}
            />
          </div>

          {reviewableTargets.length !== targets.length && (
            <div className="p-3 bg-yellow-50 rounded-lg border border-yellow-200">
              <p className="text-sm text-yellow-800">
                <AlertTriangle className="h-4 w-4 inline mr-1" />
                대기중 상태인 항목만 의견 요청 가능합니다.
                ({targets.length - reviewableTargets.length}개 항목 제외됨)
              </p>
            </div>
          )}
        </div>

        <DialogFooter>
          <Button
            variant="outline"
            onClick={() => onOpenChange(false)}
            disabled={isLoading}
          >
            취소
          </Button>
          <Button
            onClick={handleRequestReview}
            disabled={isLoading || reviewableTargets.length === 0}
          >
            {isLoading && <Loader2 className="mr-2 h-4 w-4 animate-spin" />}
            의견 요청 발송
          </Button>
        </DialogFooter>
      </DialogContent>
    </Dialog>
  )
}