"use client";

import { Disc3, Music, Play, SkipForward, Square, Volume2 } from "lucide-react";
import Image from "next/image";
import { useCallback, useState } from "react";

import { Button } from "@/components/ui/button";
import { Card, CardContent, CardHeader, CardTitle } from "@/components/ui/card";
import { Input } from "@/components/ui/input";
import { Slider } from "@/components/ui/slider";
import {
  useMediaQueue,
  useMediaSkip,
  useMediaState,
  useMediaStop,
  useMediaVolume,
  useMediaWsSync,
} from "@/hooks";
import type { WsHook } from "@/lib/ws-hook";

interface MusicPlayerProps {
  ws: WsHook;
}

export function MusicPlayer({ ws }: MusicPlayerProps) {
  const { data: mediaState } = useMediaState();
  const queueMut = useMediaQueue();
  const skipMut = useMediaSkip();
  const stopMut = useMediaStop();
  const volumeMut = useMediaVolume();
  const [queueUrl, setQueueUrl] = useState("");

  // Sync WS media_state into the query cache
  useMediaWsSync(ws);

  const handleQueue = useCallback(() => {
    if (!queueUrl.trim()) return;
    queueMut.mutate(queueUrl.trim());
    setQueueUrl("");
  }, [queueUrl, queueMut]);

  const handleVolume = useCallback(
    (value: number | readonly number[]) => {
      const vol = Array.isArray(value) ? value[0] : value;
      volumeMut.mutate(vol);
    },
    [volumeMut],
  );

  return (
    <Card>
      <CardHeader>
        <CardTitle className="flex items-center gap-2 text-sm font-semibold">
          <Music className="size-4 text-primary" />
          Music Player
        </CardTitle>
      </CardHeader>
      <CardContent className="space-y-4">
        <div className="flex gap-2">
          <Input
            placeholder="Queue a URL (YouTube, audio file…)"
            value={queueUrl}
            onChange={(e) => setQueueUrl(e.target.value)}
            onKeyDown={(e) => e.key === "Enter" && handleQueue()}
            className="flex-1 h-9"
          />
          <Button
            onClick={handleQueue}
            disabled={!queueUrl.trim() || queueMut.isPending}
          >
            <Play className="size-4 mr-1.5" />
            Queue
          </Button>
        </div>

        {mediaState?.current ? (
          <div className="rounded-lg bg-gradient-to-br from-primary/5 to-primary/[0.02] border border-primary/10 p-4 space-y-2">
            <p className="text-xs text-muted-foreground font-medium uppercase tracking-wider flex items-center gap-1.5">
              <Disc3 className="size-3" />
              Now Playing
            </p>
            <div className="flex items-start gap-3">
              {mediaState.current.thumbnailUrl && (
                <Image
                  src={mediaState.current.thumbnailUrl}
                  alt=""
                  width={56}
                  height={56}
                  className="size-14 rounded-lg object-cover shadow-sm"
                />
              )}
              <div className="flex-1 min-w-0">
                <p className="text-sm font-medium truncate">
                  {mediaState.current.title ?? mediaState.current.source}
                </p>
                <p className="text-xs text-muted-foreground mt-0.5">
                  {mediaState.current.durationMs
                    ? `${Math.floor(mediaState.current.durationMs / 60000)}:${String(Math.floor((mediaState.current.durationMs % 60000) / 1000)).padStart(2, "0")}`
                    : "Live"}
                </p>
              </div>
            </div>
          </div>
        ) : (
          !mediaState?.queue?.length && (
            <p className="text-sm text-muted-foreground py-8 text-center">
              No media queued. Paste a URL above to start playing.
            </p>
          )
        )}

        <div className="flex items-center gap-2">
          <Button variant="outline" size="sm" onClick={() => stopMut.mutate()}>
            <Square className="size-4 mr-1" />
            Stop
          </Button>
          <Button variant="outline" size="sm" onClick={() => skipMut.mutate()}>
            <SkipForward className="size-4 mr-1" />
            Skip
          </Button>
          <div className="flex items-center gap-2 ml-auto">
            <Volume2 className="size-4 text-muted-foreground" />
            <Slider
              className="w-24"
              defaultValue={[mediaState?.musicVolume ?? 0.5]}
              value={[mediaState?.musicVolume ?? 0.5]}
              onValueChange={handleVolume}
              min={0}
              max={1}
              step={0.05}
            />
          </div>
        </div>

        {mediaState && mediaState.queue.length > 0 && (
          <div className="space-y-1.5">
            <p className="text-xs text-muted-foreground font-medium">
              Queue ({mediaState.queue.length})
            </p>
            <div className="space-y-1">
              {mediaState.queue.map((item, i) => (
                <div
                  key={item.id ?? i}
                  className="flex items-center gap-2 rounded-md bg-muted/30 px-3 py-2 text-sm"
                >
                  <span className="text-xs text-muted-foreground font-mono w-5 text-right">
                    {i + 1}.
                  </span>
                  <span className="truncate flex-1">
                    {item.title ?? item.source}
                  </span>
                </div>
              ))}
            </div>
          </div>
        )}
      </CardContent>
    </Card>
  );
}