import { useEffect, useRef, useState } from "react"
import { Link } from "wouter"
import { motion } from "framer-motion"
import { Check, ClipboardList, Crown, ListChecks, Music } from "lucide-react"
import { SiSpotify, SiYoutube } from "@icons-pack/react-simple-icons"
import type {
  BlindtestTrackInfo,
  PlayerScore,
  RoomSnapshot,
  RoundRecap,
} from "@nerdware/shared"
import { Button } from "@workspace/ui/components/button"

const SERVER_URL = import.meta.env.VITE_SERVER_URL ?? "http://localhost:3001"
const recapImage = (url: string) =>
  url.startsWith("http") ? url : `${SERVER_URL}${url}`
import { useRoomStore } from "@/store/room"
import { Avatar } from "@/components/avatar"
import { celebrate } from "@/lib/confetti"
import { playVictory } from "@/lib/sound"

/** Lien de recherche Spotify (le titre vidéo contient en général artiste + chanson). */
function spotifySearch(track: BlindtestTrackInfo): string {
  const query = `${track.title} ${track.artist}`.trim()
  return `https://open.spotify.com/search/${encodeURIComponent(query)}`
}

type Place = 1 | 2 | 3

// Hauteur de marche, couleurs (or / argent / bronze) et taille d'avatar par place.
const PODIUM: Record<Place, {
  bar: string
  pedestal: string
  text: string
  ring: string
  avatar: string
}> = {
  1: {
    bar: "h-24",
    pedestal: "border-amber-400 bg-gradient-to-b from-amber-400/30 to-amber-400/5",
    text: "text-amber-400",
    ring: "ring-amber-400",
    avatar: "size-20",
  },
  2: {
    bar: "h-16",
    pedestal: "border-zinc-300/70 bg-gradient-to-b from-zinc-300/20 to-zinc-300/5",
    text: "text-zinc-300",
    ring: "ring-zinc-300",
    avatar: "size-16",
  },
  3: {
    bar: "h-12",
    pedestal: "border-amber-700/70 bg-gradient-to-b from-amber-700/25 to-amber-700/5",
    text: "text-amber-600",
    ring: "ring-amber-700",
    avatar: "size-16",
  },
}

function PodiumColumn({
  entry,
  place,
  name,
  isMe,
  delay,
}: {
  entry: PlayerScore
  place: Place
  name: string
  isMe: boolean
  delay: number
}) {
  const cfg = PODIUM[place]
  return (
    <motion.div
      initial={{ y: 30, opacity: 0 }}
      animate={{ y: 0, opacity: 1 }}
      transition={{ type: "spring", stiffness: 260, damping: 22, delay }}
      className="flex w-24 flex-col items-center gap-1"
    >
      <div className="relative">
        {place === 1 && (
          <motion.span
            initial={{ y: -26, rotate: -25, opacity: 0 }}
            animate={{ y: 0, rotate: 0, opacity: 1 }}
            transition={{ type: "spring", stiffness: 500, damping: 14, delay: delay + 0.25 }}
            className="absolute -top-5 left-1/2 z-10 -translate-x-1/2"
          >
            <Crown className="size-8 fill-amber-400 text-amber-400 drop-shadow" />
          </motion.span>
        )}
        <motion.div
          animate={
            place === 1
              ? {
                  boxShadow: [
                    "0 0 0px 0px rgba(251,191,36,0)",
                    "0 0 24px 4px rgba(251,191,36,0.5)",
                    "0 0 12px 2px rgba(251,191,36,0.25)",
                  ],
                }
              : undefined
          }
          transition={{ duration: 2, repeat: Infinity, repeatType: "reverse" }}
          className="rounded-full"
        >
          <Avatar seed={name} className={`${cfg.avatar} ring-2 ${cfg.ring}`} />
        </motion.div>
      </div>

      <span className="max-w-24 truncate text-sm font-medium">
        {name}
        {isMe && <span className="text-muted-foreground"> (toi)</span>}
      </span>
      <span className={`font-heading text-lg font-black tabular-nums ${cfg.text}`}>
        {entry.score}
      </span>

      <div
        className={`mt-1 flex w-full items-start justify-center rounded-t-lg border-x border-t-2 pt-1 ${cfg.bar} ${cfg.pedestal}`}
      >
        <span className={`font-heading text-2xl font-black ${cfg.text}`}>
          {place}
        </span>
      </div>
    </motion.div>
  )
}

export function GameEndView({ snapshot }: { snapshot: RoomSnapshot }) {
  const playerId = useRoomStore((s) => s.playerId)
  const finalScores = useRoomStore((s) => s.finalScores)
  const gameTracks = useRoomStore((s) => s.gameTracks)
  const gameRecap = useRoomStore((s) => s.gameRecap)
  const reset = useRoomStore((s) => s.reset)
  const returnToLobby = useRoomStore((s) => s.returnToLobby)
  const isHost = snapshot.hostId === playerId

  // Confettis de victoire (une fois à l'arrivée sur l'écran de fin).
  const celebrated = useRef(false)
  useEffect(() => {
    if (!celebrated.current) {
      celebrated.current = true
      celebrate()
      playVictory()
    }
  }, [])

  const [copied, setCopied] = useState(false)
  async function copyResults() {
    const lines = ["NerdWare — Résultats", "", "🏆 Classement"]
    ranked.forEach((s, i) =>
      lines.push(`${i + 1}. ${nameOf(s.playerId)} — ${s.score}`)
    )
    if (gameRecap && gameRecap.length > 0) {
      lines.push("", "Manches")
      gameRecap.forEach((r) =>
        lines.push(
          `${r.index + 1}. ${r.type === "blindtest" ? "🎧" : "🧠"} ${r.answer}`
        )
      )
    }
    try {
      await navigator.clipboard.writeText(lines.join("\n"))
      setCopied(true)
      setTimeout(() => setCopied(false), 1500)
    } catch {
      // presse-papier indisponible : on ignore
    }
  }

  const scores: PlayerScore[] = finalScores ?? snapshot.scores
  const ranked = [...scores].sort((a, b) => b.score - a.score)
  const nameOf = (id: string) =>
    snapshot.players.find((p) => p.id === id)?.name ?? "?"
  const isMe = (id: string) => id === playerId

  const [first, second, third] = ranked
  const rest = ranked.slice(3)

  return (
    <div className="flex w-full max-w-lg flex-col gap-6 text-center">
      <header>
        <p className="text-muted-foreground text-xs uppercase">
          Partie terminée
        </p>
        <h2 className="font-heading text-2xl font-bold">
          🏆 {first ? nameOf(first.playerId) : "?"} l'emporte !
        </h2>
      </header>

      {/* Podium : 2e à gauche, champion au centre, 3e à droite. */}
      <div className="mt-4 flex items-end justify-center gap-2">
        {second && (
          <PodiumColumn
            entry={second}
            place={2}
            name={nameOf(second.playerId)}
            isMe={isMe(second.playerId)}
            delay={0.1}
          />
        )}
        {first && (
          <PodiumColumn
            entry={first}
            place={1}
            name={nameOf(first.playerId)}
            isMe={isMe(first.playerId)}
            delay={0.3}
          />
        )}
        {third && (
          <PodiumColumn
            entry={third}
            place={3}
            name={nameOf(third.playerId)}
            isMe={isMe(third.playerId)}
            delay={0}
          />
        )}
      </div>

      {rest.length > 0 && (
        <ol className="flex flex-col gap-1">
          {rest.map((s, i) => (
            <li
              key={s.playerId}
              className={`bg-muted/40 flex items-center justify-between rounded-md px-3 py-2 text-sm ${
                isMe(s.playerId) ? "ring-primary ring-2" : ""
              }`}
            >
              <span className="flex items-center gap-2">
                <span className="text-muted-foreground w-5 text-right tabular-nums">
                  {i + 4}
                </span>
                <Avatar seed={nameOf(s.playerId)} className="size-7" />
                <span>
                  {nameOf(s.playerId)}
                  {isMe(s.playerId) && (
                    <span className="text-muted-foreground"> (toi)</span>
                  )}
                </span>
              </span>
              <span className="font-heading font-bold tabular-nums">
                {s.score}
              </span>
            </li>
          ))}
        </ol>
      )}

      {gameRecap && gameRecap.length > 0 && (
        <FunStats recap={gameRecap} snapshot={snapshot} />
      )}

      {gameTracks && gameTracks.length > 0 && (
        <TracksRecap tracks={gameTracks} />
      )}

      {gameRecap && gameRecap.length > 0 && (
        <RoundsRecap recap={gameRecap} nameOf={nameOf} playerId={playerId} />
      )}

      <div className="flex flex-col gap-2">
        <Button variant="secondary" className="w-full" onClick={copyResults}>
          {copied ? <Check className="text-green-500" /> : <ClipboardList />}
          {copied ? "Copié !" : "Copier les résultats"}
        </Button>
        {isHost ? (
          <Button className="w-full" onClick={returnToLobby}>
            Rejouer
          </Button>
        ) : (
          <p className="text-muted-foreground text-xs">
            En attente que l'hôte relance une partie…
          </p>
        )}
        <Link href="/">
          <Button variant="secondary" className="w-full" onClick={reset}>
            Quitter
          </Button>
        </Link>
      </div>
    </div>
  )
}

function TracksRecap({ tracks }: { tracks: BlindtestTrackInfo[] }) {
  const [copied, setCopied] = useState(false)

  async function copyPlaylist() {
    const text = tracks.map((t) => `${t.title} — ${t.artist}`).join("\n")
    try {
      await navigator.clipboard.writeText(text)
      setCopied(true)
      setTimeout(() => setCopied(false), 1500)
    } catch {
      // presse-papier indisponible : on ignore
    }
  }

  return (
    <section className="flex flex-col gap-2 text-left">
      <div className="flex items-center justify-between">
        <h3 className="text-muted-foreground flex items-center gap-1.5 text-sm font-medium">
          <Music className="size-4" /> Les musiques de la partie
        </h3>
        <Button size="sm" variant="secondary" onClick={copyPlaylist}>
          {copied ? <Check className="text-green-500" /> : <ClipboardList />}
          {copied ? "Copié" : "Playlist"}
        </Button>
      </div>
      <ul className="flex flex-col gap-2">
        {tracks.map((t) => (
          <li
            key={t.youtubeId}
            className="bg-muted/40 flex items-center gap-3 rounded-lg p-2"
          >
            <img
              src={`https://img.youtube.com/vi/${t.youtubeId}/mqdefault.jpg`}
              alt=""
              className="h-10 w-16 shrink-0 rounded object-cover"
            />
            <span className="min-w-0 flex-1">
              <span className="line-clamp-1 text-xs font-medium">{t.title}</span>
              <span className="text-muted-foreground line-clamp-1 text-[10px]">
                ajouté par {t.submittedByName}
              </span>
            </span>
            <a
              href={spotifySearch(t)}
              target="_blank"
              rel="noreferrer"
              title="Chercher sur Spotify"
            >
              <Button size="icon-sm" variant="secondary">
                <SiSpotify color="default" />
              </Button>
            </a>
            <a href={t.url} target="_blank" rel="noreferrer" title="Ouvrir sur YouTube">
              <Button size="icon-sm" variant="secondary">
                <SiYoutube color="default" />
              </Button>
            </a>
          </li>
        ))}
      </ul>
    </section>
  )
}

interface PlayerStat {
  correct: number
  answered: number
  decoy: number
  speed: number
}

// Points de base d'une bonne réponse quiz/image ; le surplus = bonus de vitesse.
const QUIZ_BASE_POINTS = 100

function FunStats({
  recap,
  snapshot,
}: {
  recap: RoundRecap[]
  snapshot: RoomSnapshot
}) {
  const stats = new Map<string, PlayerStat>(
    snapshot.players.map((p) => [
      p.id,
      { correct: 0, answered: 0, decoy: 0, speed: 0 },
    ])
  )
  for (const r of recap) {
    const answered = new Set(r.answers.map((a) => a.playerId))
    const pointsBy = new Map(r.scorers.map((sc) => [sc.playerId, sc.points]))
    for (const a of r.answers) {
      const s = stats.get(a.playerId)
      if (s) {
        s.answered++
        if (a.correct) {
          s.correct++
          // Bonus de vitesse = points au-dessus de la base (quiz/images).
          if (r.type !== "blindtest") {
            s.speed += Math.max(0, (pointsBy.get(a.playerId) ?? 0) - QUIZ_BASE_POINTS)
          }
        }
      }
    }
    if (r.type === "blindtest") {
      for (const sc of r.scorers) {
        if (!answered.has(sc.playerId)) {
          const s = stats.get(sc.playerId)
          if (s) s.decoy += sc.points
        }
      }
    }
  }

  const players = snapshot.players
  const total = recap.length
  const nameOf = (id: string) => players.find((p) => p.id === id)?.name ?? "?"
  const stat = (id: string) =>
    stats.get(id) ?? { correct: 0, answered: 0, decoy: 0, speed: 0 }
  const winners = (pick: (s: PlayerStat) => number, min = 1) => {
    const max = Math.max(0, ...players.map((p) => pick(stat(p.id))))
    return max >= min ? players.filter((p) => pick(stat(p.id)) === max) : []
  }

  const awards: { emoji: string; label: string; ids: string[] }[] = []
  const perfect = players.filter(
    (p) => total > 0 && stat(p.id).correct === total
  )
  if (perfect.length) {
    awards.push({ emoji: "🎯", label: "Sans-faute", ids: perfect.map((p) => p.id) })
  }
  const brains = winners((s) => s.correct)
  if (brains.length && brains.length < players.length) {
    awards.push({ emoji: "🧠", label: "Le cerveau", ids: brains.map((p) => p.id) })
  }
  const fastest = winners((s) => s.speed)
  if (fastest.length && fastest.length < players.length) {
    awards.push({
      emoji: "⚡",
      label: "Le plus rapide",
      ids: fastest.map((p) => p.id),
    })
  }
  const decoy = winners((s) => s.decoy)
  if (decoy.length) {
    awards.push({
      emoji: "🦹",
      label: "Roi de la tromperie",
      ids: decoy.map((p) => p.id),
    })
  }
  const boulets = players.filter(
    (p) => stat(p.id).answered > 0 && stat(p.id).correct === 0
  )
  if (boulets.length && total >= 3) {
    awards.push({ emoji: "🪨", label: "Le boulet", ids: boulets.map((p) => p.id) })
  }

  if (awards.length === 0) {
    return null
  }

  return (
    <section className="flex flex-col gap-2">
      <h3 className="text-muted-foreground text-sm font-medium">Récompenses</h3>
      <div className="flex flex-wrap gap-2">
        {awards.map((a) => (
          <div
            key={a.label}
            className="bg-muted/40 flex flex-1 flex-col items-center gap-1 rounded-xl border px-3 py-2 text-center"
          >
            <span className="text-2xl">{a.emoji}</span>
            <span className="text-[10px] font-medium uppercase">{a.label}</span>
            <div className="flex flex-wrap items-center justify-center gap-1">
              {a.ids.map((id) => (
                <span key={id} className="flex items-center gap-1 text-xs">
                  <Avatar seed={nameOf(id)} className="size-5" />
                  {nameOf(id)}
                </span>
              ))}
            </div>
          </div>
        ))}
      </div>
    </section>
  )
}

function RoundsRecap({
  recap,
  nameOf,
  playerId,
}: {
  recap: RoundRecap[]
  nameOf: (id: string) => string
  playerId: string | null
}) {
  return (
    <details className="rounded-xl border text-left">
      <summary className="text-muted-foreground flex cursor-pointer items-center gap-1.5 p-3 text-sm font-medium select-none">
        <ListChecks className="size-4" /> Récapitulatif des manches ({recap.length})
      </summary>
      <ul className="flex flex-col gap-2 p-3 pt-0">
        {recap.map((r) => {
          const pointsBy = new Map(r.scorers.map((s) => [s.playerId, s.points]))
          const found = r.answers.filter((a) => a.correct).length
          // Tri : plus de points d'abord, puis bonnes réponses.
          const answers = [...r.answers].sort(
            (a, b) =>
              (pointsBy.get(b.playerId) ?? 0) - (pointsBy.get(a.playerId) ?? 0) ||
              Number(b.correct) - Number(a.correct)
          )
          return (
            <li key={r.index} className="bg-muted/40 flex gap-3 rounded-lg p-2">
              {r.youtubeId ? (
                <img
                  src={`https://img.youtube.com/vi/${r.youtubeId}/mqdefault.jpg`}
                  alt=""
                  className="h-12 w-16 shrink-0 rounded object-cover"
                />
              ) : r.imageUrl ? (
                <img
                  src={recapImage(r.imageUrl)}
                  alt=""
                  className="h-12 w-16 shrink-0 rounded object-contain"
                />
              ) : null}
              <div className="min-w-0 flex-1">
                <p className="text-muted-foreground text-[10px] uppercase">
                  {r.index + 1} ·{" "}
                  {r.category ?? (r.type === "blindtest" ? "Blindtest" : "Quiz")}
                  {" · "}
                  <span className="text-green-500">✓ {found}</span>
                </p>
                {r.type !== "blindtest" && (
                  <p className="line-clamp-1 text-xs">{r.label}</p>
                )}
                <p className="text-sm font-medium">
                  {r.answer}
                  {r.addedBy && (
                    <span className="text-muted-foreground font-normal">
                      {" "}
                      · {r.addedBy}
                    </span>
                  )}
                </p>
                <ul className="mt-1 flex flex-col gap-0.5">
                  {answers.length === 0 ? (
                    <li className="text-muted-foreground text-[10px]">
                      Aucune réponse
                    </li>
                  ) : (
                    answers.map((a) => (
                      <li
                        key={a.playerId}
                        className="flex items-center gap-1 text-[10px]"
                      >
                        <Avatar seed={nameOf(a.playerId)} className="size-4" />
                        <span
                          className={
                            a.playerId === playerId
                              ? "font-semibold"
                              : "text-muted-foreground"
                          }
                        >
                          {nameOf(a.playerId)}
                          {a.playerId === playerId && " (toi)"} :
                        </span>
                        <span
                          className={
                            a.correct ? "text-green-500" : "text-red-400"
                          }
                        >
                          {a.answer || "—"}
                        </span>
                        {pointsBy.get(a.playerId) ? (
                          <span className="text-muted-foreground">
                            +{pointsBy.get(a.playerId)}
                          </span>
                        ) : null}
                      </li>
                    ))
                  )}
                </ul>
              </div>
            </li>
          )
        })}
      </ul>
    </details>
  )
}