"use client"

import { ClipboardList, Heart, MessageCircle, PenSquare, Pin } from "lucide-react"
import Link from "next/link"
import { useState } from "react"
import { Avatar, AvatarFallback, AvatarImage } from "@/components/ui/avatar"
import { Badge } from "@/components/ui/badge"
import { Button } from "@/components/ui/button"
import { Card, CardContent, CardFooter, CardHeader } from "@/components/ui/card"
import { listGames, listOrders, listPlayers, listPosts } from "@/lib/api"
import { roleLabels } from "@/lib/constants"

export default function CommunityPage() {
  const games = listGames()
  const posts = listPosts()
  const orders = listOrders()
  const players = listPlayers()

  const [sortMode, setSortMode] = useState<"latest" | "hot">("latest")
  const [selectedGame, setSelectedGame] = useState<string | null>(null)

  const filteredPosts = posts
    .filter((post) => {
      if (!selectedGame) return true
      return post.tags.includes(selectedGame)
    })
    .sort((a, b) => {
      if (sortMode === "latest") {
        return new Date(b.createdAt).getTime() - new Date(a.createdAt).getTime()
      }
      const scoreA = a.likeCount + a.commentCount
      const scoreB = b.likeCount + b.commentCount
      return scoreB - scoreA
    })

  return (
    <div className="container mx-auto py-8 px-4 max-w-2xl">
      <div className="flex items-center justify-between mb-6">
        <h1 className="text-2xl font-bold">社区</h1>
        <Button asChild>
          <Link href="/post/new">
            <PenSquare className="mr-1 h-4 w-4" />
            发帖
          </Link>
        </Button>
      </div>

      <div className="flex flex-col gap-4 mb-6">
        <div className="flex items-center gap-2">
          <Button
            variant={sortMode === "latest" ? "default" : "outline"}
            size="sm"
            onClick={() => setSortMode("latest")}
            className="h-8"
          >
            最新
          </Button>
          <Button
            variant={sortMode === "hot" ? "default" : "outline"}
            size="sm"
            onClick={() => setSortMode("hot")}
            className="h-8"
          >
            最热
          </Button>
        </div>
        <div className="flex flex-wrap gap-2">
          {games.map((game) => (
            <Badge
              key={game.id}
              variant={selectedGame === game.name ? "default" : "outline"}
              className="cursor-pointer hover:bg-primary/80 transition-colors px-3 py-1"
              onClick={() => setSelectedGame(selectedGame === game.name ? null : game.name)}
            >
              {game.name}
            </Badge>
          ))}
        </div>
      </div>

      <div className="space-y-4">
        {filteredPosts.map((post) =>
          (() => {
            const linkedOrder = post.linkedOrderId
              ? orders.find((order) => order.id === post.linkedOrderId)
              : null
            const linkedPlayer = linkedOrder
              ? players.find((player) => player.id === linkedOrder.playerId)
              : null

            return (
              <Link key={post.id} href={`/post/${post.id}`}>
                <Card className="hover:shadow-md transition-shadow">
                  <CardHeader className="pb-3">
                    <div className="flex items-center gap-3">
                      <Avatar className="h-9 w-9">
                        <AvatarImage src={post.author.avatar} />
                        <AvatarFallback>{post.author.nickname[0]}</AvatarFallback>
                      </Avatar>
                      <div className="flex-1 min-w-0">
                        <div className="flex items-center gap-2">
                          <span className="text-sm font-medium">{post.author.nickname}</span>
                          <Badge variant="outline" className="text-[10px] px-1.5 py-0">
                            {roleLabels[post.authorRole]}
                          </Badge>
                          {post.pinned && <Pin className="h-3 w-3 text-muted-foreground" />}
                        </div>
                        <span className="text-xs text-muted-foreground">
                          {new Date(post.createdAt).toLocaleDateString("zh-CN")}
                        </span>
                      </div>
                    </div>
                  </CardHeader>
                  <CardContent className="pb-3">
                    <h3 className="font-semibold mb-1">{post.title}</h3>
                    <p className="text-sm text-muted-foreground line-clamp-2">{post.content}</p>
                    {post.tags.length > 0 && (
                      <div className="flex flex-wrap gap-1 mt-2">
                        {post.tags.map((tag) => (
                          <Badge key={tag} variant="secondary" className="text-xs">
                            {tag}
                          </Badge>
                        ))}
                      </div>
                    )}
                    {post.linkedOrderId && (
                      <div className="mt-2 rounded border bg-muted/30 px-3 py-2 text-xs text-muted-foreground space-y-1.5">
                        <div className="flex items-center gap-1.5">
                          <ClipboardList className="h-3.5 w-3.5" />
                          关联订单秀单
                        </div>
                        {linkedOrder && (
                          <div className="pl-5">
                            <p>
                              {linkedOrder.service.gameName} · {linkedOrder.service.title}
                            </p>
                            <p>
                              {linkedOrder.playerName}
                              {linkedPlayer ? ` · ${linkedPlayer.rating}` : ""}
                            </p>
                          </div>
                        )}
                      </div>
                    )}
                  </CardContent>
                  <CardFooter className="pt-0 text-sm text-muted-foreground gap-4">
                    <span className="flex items-center gap-1">
                      <Heart
                        className={`h-4 w-4 ${post.liked ? "fill-red-500 text-red-500" : ""}`}
                      />
                      {post.likeCount}
                    </span>
                    <span className="flex items-center gap-1">
                      <MessageCircle className="h-4 w-4" />
                      {post.commentCount}
                    </span>
                  </CardFooter>
                </Card>
              </Link>
            )
          })(),
        )}
      </div>
    </div>
  )
}