import { ActivityFeed } from "@/components/feed/activity-feed"
import { Button } from "@/components/ui/button"
import { Card, CardContent, CardHeader, CardTitle } from "@/components/ui/card"
import Link from "next/link"
import { Trophy, Music, MapPin, Calendar, ChevronRight, Star } from "lucide-react"
import { getApiUrl } from "@/lib/api-config"

interface Show {
  id: number
  date: string
  venue?: {
    id: number
    name: string
    city?: string
    state?: string
  }
  tour?: {
    id: number
    name: string
  }
}

interface Song {
  id: number
  title: string
  performance_count?: number
  avg_rating?: number
}

async function getRecentShows(): Promise<Show[]> {
  try {
    const res = await fetch(`${getApiUrl()}/shows/recent?limit=8`, {
      cache: 'no-store',
      next: { revalidate: 60 }
    })
    if (!res.ok) return []
    return res.json()
  } catch (e) {
    console.error('Failed to fetch recent shows:', e)
    return []
  }
}

async function getTopSongs(): Promise<Song[]> {
  try {
    const res = await fetch(`${getApiUrl()}/stats/top-songs?limit=5`, {
      cache: 'no-store',
      next: { revalidate: 300 }
    })
    if (!res.ok) return []
    return res.json()
  } catch (e) {
    console.error('Failed to fetch top songs:', e)
    return []
  }
}

async function getStats() {
  try {
    const [showsRes, songsRes, venuesRes] = await Promise.all([
      fetch(`${getApiUrl()}/shows?limit=1`, { cache: 'no-store' }),
      fetch(`${getApiUrl()}/songs?limit=1`, { cache: 'no-store' }),
      fetch(`${getApiUrl()}/venues?limit=1`, { cache: 'no-store' })
    ])
    // These endpoints return arrays, we need to get counts differently
    // For now we'll just show the data we have
    return { shows: 0, songs: 0, venues: 0 }
  } catch (e) {
    return { shows: 0, songs: 0, venues: 0 }
  }
}

export default async function Home() {
  const [recentShows, topSongs] = await Promise.all([
    getRecentShows(),
    getTopSongs()
  ])

  return (
    <div className="flex flex-col gap-8">
      {/* Hero Section */}
      <section className="flex flex-col items-center gap-4 py-12 text-center md:py-20 bg-gradient-to-b from-background to-accent/20 rounded-3xl border">
        <h1 className="text-4xl font-bold tracking-tighter sm:text-5xl md:text-6xl">
          Elmeg
        </h1>
        <p className="max-w-[600px] text-lg text-muted-foreground">
          The ultimate community archive for Goose history.
          <br />
          Discover shows, rate performances, and find the <strong>heady versions</strong>.
        </p>
        <div className="flex gap-4">
          <Link href="/performances">
            <Button size="lg" className="gap-2">
              <Trophy className="h-4 w-4" />
              Heady Versions
            </Button>
          </Link>
          <Link href="/shows">
            <Button variant="outline" size="lg">
              Browse Shows
            </Button>
          </Link>
        </div>
      </section>

      {/* Recent Shows */}
      <section className="space-y-4">
        <div className="flex items-center justify-between">
          <h2 className="text-2xl font-bold flex items-center gap-2">
            <Calendar className="h-6 w-6 text-blue-500" />
            Recent Shows
          </h2>
          <Link href="/shows" className="text-sm text-muted-foreground hover:underline flex items-center gap-1">
            View all shows <ChevronRight className="h-4 w-4" />
          </Link>
        </div>
        {recentShows.length > 0 ? (
          <div className="grid gap-3 sm:grid-cols-2 lg:grid-cols-4">
            {recentShows.map((show) => (
              <Link key={show.id} href={`/shows/${show.id}`}>
                <Card className="h-full hover:bg-accent/50 transition-colors cursor-pointer">
                  <CardContent className="p-4">
                    <div className="font-semibold">
                      {new Date(show.date).toLocaleDateString('en-US', {
                        weekday: 'short',
                        year: 'numeric',
                        month: 'short',
                        day: 'numeric'
                      })}
                    </div>
                    {show.venue && (
                      <div className="text-sm text-muted-foreground mt-1">
                        {show.venue.name}
                      </div>
                    )}
                    {show.venue?.city && (
                      <div className="text-xs text-muted-foreground">
                        {show.venue.city}{show.venue.state ? `, ${show.venue.state}` : ''}
                      </div>
                    )}
                    {show.tour && (
                      <div className="text-xs text-primary mt-2">
                        {show.tour.name}
                      </div>
                    )}
                  </CardContent>
                </Card>
              </Link>
            ))}
          </div>
        ) : (
          <Card className="p-8 text-center text-muted-foreground">
            <p>No shows yet. Check back soon!</p>
          </Card>
        )}
      </section>

      <div className="grid gap-8 lg:grid-cols-3">
        {/* Top Songs */}
        <section className="space-y-4 lg:col-span-1">
          <div className="flex items-center justify-between">
            <h2 className="text-xl font-bold flex items-center gap-2">
              <Star className="h-5 w-5 text-yellow-500" />
              Top Songs
            </h2>
            <Link href="/songs" className="text-sm text-muted-foreground hover:underline flex items-center gap-1">
              All songs <ChevronRight className="h-4 w-4" />
            </Link>
          </div>
          <Card>
            <CardContent className="p-0">
              {topSongs.length > 0 ? (
                <ul className="divide-y">
                  {topSongs.map((song, idx) => (
                    <li key={song.id}>
                      <Link
                        href={`/songs/${song.id}`}
                        className="flex items-center gap-3 p-3 hover:bg-accent/50 transition-colors"
                      >
                        <span className="text-lg font-bold text-muted-foreground w-6 text-center">
                          {idx + 1}
                        </span>
                        <div className="flex-1 min-w-0">
                          <div className="font-medium truncate">{song.title}</div>
                          {song.performance_count && (
                            <div className="text-xs text-muted-foreground">
                              {song.performance_count} performances
                            </div>
                          )}
                        </div>
                      </Link>
                    </li>
                  ))}
                </ul>
              ) : (
                <div className="p-4 text-center text-muted-foreground text-sm">
                  No songs yet
                </div>
              )}
            </CardContent>
          </Card>
        </section>

        {/* Activity Feed */}
        <section className="space-y-4 lg:col-span-2">
          <div className="flex items-center justify-between">
            <h2 className="text-xl font-bold">Recent Activity</h2>
            <Link href="/leaderboards" className="text-sm text-muted-foreground hover:underline flex items-center gap-1">
              View all <ChevronRight className="h-4 w-4" />
            </Link>
          </div>
          <ActivityFeed />
        </section>
      </div>

      {/* Quick Links */}
      <section className="grid gap-4 sm:grid-cols-2 lg:grid-cols-4">
        <Link href="/shows" className="block p-6 border rounded-xl hover:bg-accent transition-colors group">
          <Music className="h-8 w-8 mb-2 text-blue-500 group-hover:scale-110 transition-transform" />
          <h3 className="font-bold">Shows</h3>
          <p className="text-sm text-muted-foreground">Browse the complete archive</p>
        </Link>
        <Link href="/venues" className="block p-6 border rounded-xl hover:bg-accent transition-colors group">
          <MapPin className="h-8 w-8 mb-2 text-green-500 group-hover:scale-110 transition-transform" />
          <h3 className="font-bold">Venues</h3>
          <p className="text-sm text-muted-foreground">Find your favorite spots</p>
        </Link>
        <Link href="/songs" className="block p-6 border rounded-xl hover:bg-accent transition-colors group">
          <Music className="h-8 w-8 mb-2 text-purple-500 group-hover:scale-110 transition-transform" />
          <h3 className="font-bold">Songs</h3>
          <p className="text-sm text-muted-foreground">Explore the catalog</p>
        </Link>
        <Link href="/leaderboards" className="block p-6 border rounded-xl hover:bg-accent transition-colors group">
          <Trophy className="h-8 w-8 mb-2 text-yellow-500 group-hover:scale-110 transition-transform" />
          <h3 className="font-bold">Leaderboards</h3>
          <p className="text-sm text-muted-foreground">Top rated everything</p>
        </Link>
      </section>
    </div>
  )
}