'use client';

import * as React from 'react';
import { Plus, ChevronDown, ChevronRight, Sparkles } from 'lucide-react';
import type { Track as TrackType } from '@/types/track';
import { Button } from '@/components/ui/Button';
import { cn } from '@/lib/utils/cn';
import { EffectDevice } from '@/components/effects/EffectDevice';
import { EffectBrowser } from '@/components/effects/EffectBrowser';
import type { EffectType } from '@/lib/audio/effects/chain';

export interface TrackExtensionsProps {
  track: TrackType;
  onUpdateTrack: (trackId: string, updates: Partial<TrackType>) => void;
  onToggleEffect?: (effectId: string) => void;
  onRemoveEffect?: (effectId: string) => void;
  onUpdateEffect?: (effectId: string, parameters: any) => void;
  onAddEffect?: (effectType: EffectType) => void;
  asOverlay?: boolean; // When true, renders as full overlay without header
}

export function TrackExtensions({
  track,
  onUpdateTrack,
  onToggleEffect,
  onRemoveEffect,
  onUpdateEffect,
  onAddEffect,
  asOverlay = false,
}: TrackExtensionsProps) {
  const [effectBrowserOpen, setEffectBrowserOpen] = React.useState(false);

  // Don't render if track is collapsed (unless it's an overlay, which handles its own visibility)
  if (!asOverlay && track.collapsed) {
    return null;
  }

  // Overlay mode: render full-screen effect rack
  if (asOverlay) {
    return (
      <>
        <div className="flex flex-col h-full bg-card/95 rounded-lg border border-border shadow-2xl">
          {/* Header with close button */}
          <div className="flex items-center justify-between px-4 py-3 border-b border-border bg-muted/50">
            <div className="flex items-center gap-2">
              <span className="text-sm font-medium">Effects</span>
              <span className="text-xs text-muted-foreground">
                ({track.effectChain.effects.length})
              </span>
            </div>
            <div className="flex items-center gap-2">
              <Button
                variant="ghost"
                size="icon-sm"
                onClick={() => setEffectBrowserOpen(true)}
                title="Add effect"
              >
                <Plus className="h-4 w-4" />
              </Button>
              <Button
                variant="ghost"
                size="icon-sm"
                onClick={() => onUpdateTrack(track.id, { showEffects: false })}
                title="Close effects"
              >
                <ChevronDown className="h-4 w-4" />
              </Button>
            </div>
          </div>

          {/* Effects rack */}
          <div className="flex-1 overflow-x-auto custom-scrollbar p-4">
            <div className="flex h-full gap-4">
              {track.effectChain.effects.length === 0 ? (
                <div className="flex flex-col items-center justify-center w-full text-center gap-3">
                  <Sparkles className="h-12 w-12 text-muted-foreground/30" />
                  <div>
                    <p className="text-sm text-muted-foreground mb-1">No effects yet</p>
                    <p className="text-xs text-muted-foreground/70">
                      Click + to add an effect
                    </p>
                  </div>
                </div>
              ) : (
                track.effectChain.effects.map((effect) => (
                  <EffectDevice
                    key={effect.id}
                    effect={effect}
                    onToggleEnabled={() => onToggleEffect?.(effect.id)}
                    onRemove={() => onRemoveEffect?.(effect.id)}
                    onUpdateParameters={(params) => onUpdateEffect?.(effect.id, params)}
                    onToggleExpanded={() => {
                      const updatedEffects = track.effectChain.effects.map((e) =>
                        e.id === effect.id ? { ...e, expanded: !e.expanded } : e
                      );
                      onUpdateTrack(track.id, {
                        effectChain: { ...track.effectChain, effects: updatedEffects },
                      });
                    }}
                  />
                ))
              )}
            </div>
          </div>
        </div>

        {/* Effect Browser Dialog */}
        <EffectBrowser
          open={effectBrowserOpen}
          onClose={() => setEffectBrowserOpen(false)}
          onSelectEffect={(effectType) => {
            if (onAddEffect) {
              onAddEffect(effectType);
            }
          }}
        />
      </>
    );
  }

  // Original inline mode
  return (
    <>
      {/* Effects Section (Collapsible, Full Width) */}
      <div className="bg-muted/50 border-b border-border/50">
        {/* Effects Header - clickable to toggle */}
        <div
          className="flex items-center gap-2 px-3 py-1.5 cursor-pointer hover:bg-accent/30 transition-colors"
          onClick={() => {
            onUpdateTrack(track.id, {
              showEffects: !track.showEffects,
            });
          }}
        >
          {track.showEffects ? (
            <ChevronDown className="h-3.5 w-3.5 text-muted-foreground flex-shrink-0" />
          ) : (
            <ChevronRight className="h-3.5 w-3.5 text-muted-foreground flex-shrink-0" />
          )}

          {/* Show mini effect chain when collapsed */}
          {!track.showEffects && track.effectChain.effects.length > 0 ? (
            <div className="flex-1 flex items-center gap-1 overflow-x-auto custom-scrollbar">
              {track.effectChain.effects.map((effect) => (
                <div
                  key={effect.id}
                  className={cn(
                    'px-2 py-0.5 rounded text-[10px] font-medium flex-shrink-0',
                    effect.enabled
                      ? 'bg-primary/20 text-primary border border-primary/30'
                      : 'bg-muted/30 text-muted-foreground border border-border'
                  )}
                >
                  {effect.name}
                </div>
              ))}
            </div>
          ) : (
            <span className="text-xs font-medium text-muted-foreground">
              Devices ({track.effectChain.effects.length})
            </span>
          )}

          <Button
            variant="ghost"
            size="icon-sm"
            onClick={(e) => {
              e.stopPropagation();
              setEffectBrowserOpen(true);
            }}
            title="Add effect"
            className="h-5 w-5 flex-shrink-0"
          >
            <Plus className="h-3 w-3" />
          </Button>
        </div>

        {/* Horizontal scrolling device rack - expanded state */}
        {track.showEffects && (
          <div className="h-48 overflow-x-auto custom-scrollbar bg-muted/70 p-3">
            <div className="flex h-full gap-3">
              {track.effectChain.effects.length === 0 ? (
                <div className="text-xs text-muted-foreground text-center py-8 w-full">
                  No devices. Click + to add an effect.
                </div>
              ) : (
                track.effectChain.effects.map((effect) => (
                  <EffectDevice
                    key={effect.id}
                    effect={effect}
                    onToggleEnabled={() => onToggleEffect?.(effect.id)}
                    onRemove={() => onRemoveEffect?.(effect.id)}
                    onUpdateParameters={(params) => onUpdateEffect?.(effect.id, params)}
                    onToggleExpanded={() => {
                      const updatedEffects = track.effectChain.effects.map((e) =>
                        e.id === effect.id ? { ...e, expanded: !e.expanded } : e
                      );
                      onUpdateTrack(track.id, {
                        effectChain: { ...track.effectChain, effects: updatedEffects },
                      });
                    }}
                  />
                ))
              )}
            </div>
          </div>
        )}
      </div>

      {/* Effect Browser Dialog */}
      <EffectBrowser
        open={effectBrowserOpen}
        onClose={() => setEffectBrowserOpen(false)}
        onSelectEffect={(effectType) => {
          if (onAddEffect) {
            onAddEffect(effectType);
          }
        }}
      />
    </>
  );
}