"use client"

import OrderActions from "@/components/order-actions"
import { Card, CardContent, CardHeader, CardTitle } from "@/components/ui/card"
import { EmptyState } from "@/components/ui/empty-state"
import { Separator } from "@/components/ui/separator"
import { StatusBadge } from "@/components/ui/status-badge"
import { getOrderById, getPlayerById, getUserById, listReviewsByOrder } from "@/lib/api"
import { statusLabels } from "@/lib/constants"
import type { OrderStatus, Player, User } from "@/lib/types"
import { useAuthStore } from "@/store/auth"
import { ArrowLeft, CheckCircle, Clock, Star } from "lucide-react"
import Link from "next/link"
import { use, useEffect, useState } from "react"

const normalStatusSteps: OrderStatus[] = [
  "pending_payment",
  "pending_accept",
  "in_progress",
  "pending_close",
  "pending_review",
  "completed",
]

const disputedStatusSteps: OrderStatus[] = [
  "pending_payment",
  "pending_accept",
  "in_progress",
  "pending_close",
  "disputed",
]

const cancelledStatusSteps: OrderStatus[] = ["pending_payment", "pending_accept", "cancelled"]

type OrderStatusBadgeVariant = "success" | "warning" | "info" | "neutral" | "destructive"

const statusVariants: Record<OrderStatus, OrderStatusBadgeVariant> = {
  pending_payment: "warning",
  pending_accept: "info",
  in_progress: "success",
  pending_close: "info",
  pending_review: "info",
  disputed: "destructive",
  completed: "success",
  cancelled: "neutral",
}

export default function OrderDetailPage({ params }: { params: Promise<{ id: string }> }) {
  const { id } = use(params)
  const currentUserId = useAuthStore((state) => state.user?.id)
  const [reviews, setReviews] = useState<Awaited<ReturnType<typeof listReviewsByOrder>>>([])
  const [chatTarget, setChatTarget] = useState<User | null>(null)
  const [player, setPlayer] = useState<Player | null>(null)
  const [order, setOrder] = useState<Awaited<ReturnType<typeof getOrderById>> | undefined>(
    undefined,
  )
  const [loading, setLoading] = useState(true)

  useEffect(() => {
    let cancelled = false

    void (async () => {
      try {
        setLoading(true)
        const order = await Promise.resolve(getOrderById(id))
        if (cancelled) return
        setOrder(order)
        setLoading(false)
      } catch {
        if (cancelled) return
        setOrder(undefined)
        setLoading(false)
      }
    })()

    return () => {
      cancelled = true
    }
  }, [id])

  useEffect(() => {
    let cancelled = false

    void (async () => {
      if (!order || !currentUserId) {
        setPlayer(null)
        setChatTarget(null)
        return
      }

      try {
        setPlayer(null)
        setChatTarget(null)
        const player = await getPlayerById(String(order.playerId))
        if (!cancelled) setPlayer(player ?? null)

        if (String(order.consumerId) === currentUserId) {
          if (!cancelled) setChatTarget(player?.user ?? null)
          return
        }

        if (player?.user.id === currentUserId) {
          const consumer = await getUserById(String(order.consumerId))
          if (!cancelled) setChatTarget(consumer ?? null)
        }
      } catch {
        if (!cancelled) setPlayer(null)
        if (!cancelled) setChatTarget(null)
      }
    })()

    return () => {
      cancelled = true
    }
  }, [currentUserId, order])

  useEffect(() => {
    let cancelled = false

    void (async () => {
      try {
        const reviews = await Promise.resolve(listReviewsByOrder(id))
        if (cancelled) return
        setReviews(reviews)
      } catch {
        if (cancelled) return
        setReviews([])
      }
    })()

    return () => {
      cancelled = true
    }
  }, [id])

  if (loading) {
    return (
      <div className="container mx-auto max-w-2xl px-4 py-8">
        <EmptyState title="加载中" description="正在读取订单详情..." icon={Clock} />
      </div>
    )
  }

  if (!order) {
    return (
      <div className="container mx-auto max-w-2xl px-4 py-8">
        <EmptyState title="订单不存在" description="该订单可能已被删除或暂不可访问。" />
      </div>
    )
  }

  const statusSteps =
    order.status === "disputed"
      ? disputedStatusSteps
      : order.status === "cancelled"
        ? cancelledStatusSteps
        : normalStatusSteps
  const currentStepIndex = statusSteps.indexOf(order.status)
  const isPlayerParticipant = player?.user.id === currentUserId

  return (
    <div className="container mx-auto py-8 px-4 max-w-2xl">
      <Link
        href="/orders"
        className="inline-flex items-center gap-1 text-sm text-muted-foreground hover:text-foreground mb-4"
      >
        <ArrowLeft className="h-4 w-4" />
        返回订单列表
      </Link>

      <div className="flex items-center justify-between mb-6">
        <h1 className="text-2xl font-bold">订单详情</h1>
        <StatusBadge status={statusVariants[order.status]}>
          {statusLabels[order.status]}
        </StatusBadge>
      </div>

      <Card className="mb-6 border-border/80 shadow-sm">
        <CardContent className="pt-6">
          <div className="flex items-center justify-between">
            {statusSteps.map((step, i) => {
              const isActive = i <= currentStepIndex
              const isCurrent = i === currentStepIndex
              return (
                <div key={step} className="flex flex-col items-center gap-1 flex-1">
                  <div
                    className={`h-8 w-8 rounded-full flex items-center justify-center text-xs font-medium ${
                      isCurrent
                        ? "bg-primary text-primary-foreground"
                        : isActive
                          ? "border border-primary/30 bg-primary/10 text-primary"
                          : "border border-border/60 bg-muted/50 text-muted-foreground"
                    }`}
                  >
                    {isActive ? <CheckCircle className="h-4 w-4" /> : i + 1}
                  </div>
                  <span className="text-[10px] text-muted-foreground text-center">
                    {statusLabels[step]}
                  </span>
                </div>
              )
            })}
          </div>
        </CardContent>
      </Card>

      <Card className="mb-6 border-border/80 shadow-sm">
        <CardHeader>
          <CardTitle className="text-base">服务信息</CardTitle>
        </CardHeader>
        <CardContent className="space-y-3">
          <div className="flex justify-between text-sm">
            <span className="text-muted-foreground">服务</span>
            <span>{order.service.title}</span>
          </div>
          <div className="flex justify-between text-sm">
            <span className="text-muted-foreground">游戏</span>
            <span>{order.service.gameName}</span>
          </div>
          <div className="flex justify-between text-sm">
            <span className="text-muted-foreground">单价</span>
            <span>
              ¥{order.service.price}/{order.service.unit}
            </span>
          </div>
          <Separator />
          <div className="flex justify-between text-sm">
            <span className="text-muted-foreground">打手</span>
            <Link href={`/player/${order.playerId}`} className="text-primary hover:underline">
              {order.service.title}
            </Link>
          </div>
          <Separator />
          <div className="flex justify-between text-sm font-medium">
            <span>总价</span>
            <span className="text-lg">¥{order.totalPrice}</span>
          </div>
          {order.note && (
            <div className="text-sm">
              <span className="text-muted-foreground">备注: </span>
              {order.note}
            </div>
          )}
        </CardContent>
      </Card>

      <Card className="mb-6 border-border/80 shadow-sm">
        <CardHeader>
          <CardTitle className="text-base">时间线</CardTitle>
        </CardHeader>
        <CardContent className="space-y-2 text-sm">
          <div className="flex items-center gap-2">
            <Clock className="h-3.5 w-3.5 text-muted-foreground" />
            <span className="text-muted-foreground">下单时间:</span>
            {new Date(order.createdAt).toLocaleString("zh-CN")}
          </div>
          {order.acceptedAt && (
            <div className="flex items-center gap-2">
              <CheckCircle className="h-3.5 w-3.5 text-success" />
              <span className="text-muted-foreground">接单时间:</span>
              {new Date(order.acceptedAt).toLocaleString("zh-CN")}
            </div>
          )}
          {order.completedAt && (
            <div className="flex items-center gap-2">
              <CheckCircle className="h-3.5 w-3.5 text-success" />
              <span className="text-muted-foreground">完成时间:</span>
              {new Date(order.completedAt).toLocaleString("zh-CN")}
            </div>
          )}
        </CardContent>
      </Card>

      {reviews.length > 0 && (
        <Card className="mb-6 border-border/80 shadow-sm">
          <CardHeader>
            <CardTitle className="text-base">评价</CardTitle>
          </CardHeader>
          <CardContent className="space-y-4">
            {reviews.map((review) => (
              <div key={review.id} className="space-y-1">
                <div className="flex items-center gap-2">
                  <span className="text-sm font-medium">{review.fromUserName}</span>
                  <div className="flex">
                    {[1, 2, 3, 4, 5].map((star) => (
                      <Star
                        key={`star-${star}`}
                        className={`h-3.5 w-3.5 ${star <= review.rating ? "fill-warning text-warning" : "text-muted stroke-muted-foreground"}`}
                      />
                    ))}
                  </div>
                </div>
                {review.sealed ? (
                  <p className="text-sm text-muted-foreground">评价已提交，待揭晓</p>
                ) : (
                  review.content && (
                    <p className="text-sm text-muted-foreground">{review.content}</p>
                  )
                )}
                <p className="text-xs text-muted-foreground">
                  {new Date(review.createdAt).toLocaleDateString("zh-CN")}
                </p>
              </div>
            ))}
          </CardContent>
        </Card>
      )}

      <OrderActions
        orderId={order.id}
        order={order}
        onOrderChange={(next) => setOrder(next)}
        initialStatus={order.status}
        chatTargetId={chatTarget?.id}
        isPlayerParticipant={isPlayerParticipant}
        serviceId={order.service.id}
      />
    </div>
  )
}