'use client';

import * as React from 'react';
import { X, RotateCcw } from 'lucide-react';
import { Button } from '@/components/ui/Button';
import { Slider } from '@/components/ui/Slider';
import { RecordingSettings } from '@/components/recording/RecordingSettings';
import { cn } from '@/lib/utils/cn';
import type { RecordingSettings as RecordingSettingsType } from '@/lib/hooks/useRecording';
import type {
  Settings,
  AudioSettings,
  UISettings,
  EditorSettings,
  PerformanceSettings,
} from '@/lib/hooks/useSettings';

export interface GlobalSettingsDialogProps {
  open: boolean;
  onClose: () => void;
  recordingSettings: RecordingSettingsType;
  onInputGainChange: (gain: number) => void;
  onRecordMonoChange: (mono: boolean) => void;
  onSampleRateChange: (sampleRate: number) => void;
  settings: Settings;
  onAudioSettingsChange: (updates: Partial<AudioSettings>) => void;
  onUISettingsChange: (updates: Partial<UISettings>) => void;
  onEditorSettingsChange: (updates: Partial<EditorSettings>) => void;
  onPerformanceSettingsChange: (updates: Partial<PerformanceSettings>) => void;
  onResetCategory: (category: 'audio' | 'ui' | 'editor' | 'performance') => void;
}

type TabType = 'recording' | 'audio' | 'editor' | 'interface' | 'performance';

export function GlobalSettingsDialog({
  open,
  onClose,
  recordingSettings,
  onInputGainChange,
  onRecordMonoChange,
  onSampleRateChange,
  settings,
  onAudioSettingsChange,
  onUISettingsChange,
  onEditorSettingsChange,
  onPerformanceSettingsChange,
  onResetCategory,
}: GlobalSettingsDialogProps) {
  const [activeTab, setActiveTab] = React.useState<TabType>('recording');

  if (!open) return null;

  return (
    <>
      {/* Backdrop */}
      <div
        className="fixed inset-0 bg-background/80 backdrop-blur-sm z-40"
        onClick={onClose}
      />

      {/* Dialog */}
      <div className="fixed left-1/2 top-1/2 -translate-x-1/2 -translate-y-1/2 w-full max-w-3xl z-50">
        <div className="bg-card border border-border rounded-lg shadow-2xl overflow-hidden">
          {/* Header */}
          <div className="flex items-center justify-between px-6 py-4 border-b border-border">
            <h2 className="text-lg font-semibold">Settings</h2>
            <Button
              variant="ghost"
              size="icon-sm"
              onClick={onClose}
              title="Close"
            >
              <X className="h-4 w-4" />
            </Button>
          </div>

          {/* Tabs */}
          <div className="flex border-b border-border bg-muted/30 overflow-x-auto">
            {[
              { id: 'recording', label: 'Recording' },
              { id: 'audio', label: 'Audio' },
              { id: 'editor', label: 'Editor' },
              { id: 'interface', label: 'Interface' },
              { id: 'performance', label: 'Performance' },
            ].map((tab) => (
              <button
                key={tab.id}
                onClick={() => setActiveTab(tab.id as TabType)}
                className={cn(
                  'px-6 py-3 text-sm font-medium transition-colors relative flex-shrink-0',
                  activeTab === tab.id
                    ? 'text-foreground bg-card'
                    : 'text-muted-foreground hover:text-foreground hover:bg-muted/50'
                )}
              >
                {tab.label}
                {activeTab === tab.id && (
                  <div className="absolute bottom-0 left-0 right-0 h-0.5 bg-primary" />
                )}
              </button>
            ))}
          </div>

          {/* Content */}
          <div className="p-6 max-h-[60vh] overflow-y-auto custom-scrollbar">
            {/* Recording Tab */}
            {activeTab === 'recording' && (
              <div className="space-y-4">
                <div className="flex items-center justify-between">
                  <h3 className="text-sm font-medium">Recording Settings</h3>
                </div>
                <RecordingSettings
                  settings={recordingSettings}
                  onInputGainChange={onInputGainChange}
                  onRecordMonoChange={onRecordMonoChange}
                  onSampleRateChange={onSampleRateChange}
                  className="border-0 bg-transparent p-0"
                />

                <div className="pt-4 border-t border-border">
                  <h3 className="text-sm font-medium mb-2">Note</h3>
                  <p className="text-sm text-muted-foreground">
                    These settings apply globally to all recordings. Arm a track (red button)
                    to enable recording on that specific track.
                  </p>
                </div>
              </div>
            )}

            {/* Audio Tab */}
            {activeTab === 'audio' && (
              <div className="space-y-6">
                <div className="flex items-center justify-between">
                  <h3 className="text-sm font-medium">Audio Settings</h3>
                  <Button
                    variant="ghost"
                    size="sm"
                    onClick={() => onResetCategory('audio')}
                    className="h-7 text-xs"
                  >
                    <RotateCcw className="h-3 w-3 mr-1" />
                    Reset
                  </Button>
                </div>

                {/* Buffer Size */}
                <div className="space-y-2">
                  <label className="text-sm font-medium">Buffer Size</label>
                  <select
                    value={settings.audio.bufferSize}
                    onChange={(e) =>
                      onAudioSettingsChange({ bufferSize: Number(e.target.value) })
                    }
                    className="w-full px-3 py-2 bg-background border border-border rounded text-sm"
                  >
                    <option value={256}>256 samples (Low latency, higher CPU)</option>
                    <option value={512}>512 samples</option>
                    <option value={1024}>1024 samples</option>
                    <option value={2048}>2048 samples (Recommended)</option>
                    <option value={4096}>4096 samples (Low CPU)</option>
                  </select>
                  <p className="text-xs text-muted-foreground">
                    Smaller buffer = lower latency but higher CPU usage. Requires reload.
                  </p>
                </div>

                {/* Sample Rate */}
                <div className="space-y-2">
                  <label className="text-sm font-medium">Default Sample Rate</label>
                  <select
                    value={settings.audio.sampleRate}
                    onChange={(e) =>
                      onAudioSettingsChange({ sampleRate: Number(e.target.value) })
                    }
                    className="w-full px-3 py-2 bg-background border border-border rounded text-sm"
                  >
                    <option value={44100}>44.1 kHz (CD Quality)</option>
                    <option value={48000}>48 kHz (Professional)</option>
                    <option value={96000}>96 kHz (Hi-Res Audio)</option>
                  </select>
                  <p className="text-xs text-muted-foreground">
                    Higher sample rate = better quality but larger file sizes.
                  </p>
                </div>

                {/* Auto Normalize */}
                <div className="flex items-center justify-between p-3 bg-muted/50 rounded">
                  <div>
                    <div className="text-sm font-medium">Auto-Normalize on Import</div>
                    <p className="text-xs text-muted-foreground">
                      Automatically normalize audio when importing files
                    </p>
                  </div>
                  <input
                    type="checkbox"
                    checked={settings.audio.autoNormalizeOnImport}
                    onChange={(e) =>
                      onAudioSettingsChange({ autoNormalizeOnImport: e.target.checked })
                    }
                    className="h-4 w-4"
                  />
                </div>
              </div>
            )}

            {/* Editor Tab */}
            {activeTab === 'editor' && (
              <div className="space-y-6">
                <div className="flex items-center justify-between">
                  <h3 className="text-sm font-medium">Editor Settings</h3>
                  <Button
                    variant="ghost"
                    size="sm"
                    onClick={() => onResetCategory('editor')}
                    className="h-7 text-xs"
                  >
                    <RotateCcw className="h-3 w-3 mr-1" />
                    Reset
                  </Button>
                </div>

                {/* Auto-Save Interval */}
                <div className="space-y-2">
                  <div className="flex items-center justify-between">
                    <label className="text-sm font-medium">Auto-Save Interval</label>
                    <span className="text-xs font-mono text-muted-foreground">
                      {settings.editor.autoSaveInterval === 0
                        ? 'Disabled'
                        : `${settings.editor.autoSaveInterval}s`}
                    </span>
                  </div>
                  <Slider
                    value={[settings.editor.autoSaveInterval]}
                    onValueChange={([value]) =>
                      onEditorSettingsChange({ autoSaveInterval: value })
                    }
                    min={0}
                    max={30}
                    step={1}
                    className="w-full"
                  />
                  <p className="text-xs text-muted-foreground">
                    Set to 0 to disable auto-save. Default: 3 seconds.
                  </p>
                </div>

                {/* Undo History Limit */}
                <div className="space-y-2">
                  <div className="flex items-center justify-between">
                    <label className="text-sm font-medium">Undo History Limit</label>
                    <span className="text-xs font-mono text-muted-foreground">
                      {settings.editor.undoHistoryLimit} operations
                    </span>
                  </div>
                  <Slider
                    value={[settings.editor.undoHistoryLimit]}
                    onValueChange={([value]) =>
                      onEditorSettingsChange({ undoHistoryLimit: value })
                    }
                    min={10}
                    max={200}
                    step={10}
                    className="w-full"
                  />
                  <p className="text-xs text-muted-foreground">
                    Higher values use more memory. Default: 50.
                  </p>
                </div>

                {/* Snap to Grid */}
                <div className="flex items-center justify-between p-3 bg-muted/50 rounded">
                  <div>
                    <div className="text-sm font-medium">Snap to Grid</div>
                    <p className="text-xs text-muted-foreground">
                      Snap playhead and selections to grid lines
                    </p>
                  </div>
                  <input
                    type="checkbox"
                    checked={settings.editor.snapToGrid}
                    onChange={(e) =>
                      onEditorSettingsChange({ snapToGrid: e.target.checked })
                    }
                    className="h-4 w-4"
                  />
                </div>

                {/* Grid Resolution */}
                <div className="space-y-2">
                  <div className="flex items-center justify-between">
                    <label className="text-sm font-medium">Grid Resolution</label>
                    <span className="text-xs font-mono text-muted-foreground">
                      {settings.editor.gridResolution}s
                    </span>
                  </div>
                  <Slider
                    value={[settings.editor.gridResolution]}
                    onValueChange={([value]) =>
                      onEditorSettingsChange({ gridResolution: value })
                    }
                    min={0.1}
                    max={5}
                    step={0.1}
                    className="w-full"
                  />
                  <p className="text-xs text-muted-foreground">
                    Grid spacing in seconds. Default: 1.0s.
                  </p>
                </div>

                {/* Default Zoom */}
                <div className="space-y-2">
                  <div className="flex items-center justify-between">
                    <label className="text-sm font-medium">Default Zoom Level</label>
                    <span className="text-xs font-mono text-muted-foreground">
                      {settings.editor.defaultZoom}x
                    </span>
                  </div>
                  <Slider
                    value={[settings.editor.defaultZoom]}
                    onValueChange={([value]) =>
                      onEditorSettingsChange({ defaultZoom: value })
                    }
                    min={1}
                    max={20}
                    step={1}
                    className="w-full"
                  />
                  <p className="text-xs text-muted-foreground">
                    Initial zoom level when opening projects. Default: 1x.
                  </p>
                </div>
              </div>
            )}

            {/* Interface Tab */}
            {activeTab === 'interface' && (
              <div className="space-y-6">
                <div className="flex items-center justify-between">
                  <h3 className="text-sm font-medium">Interface Settings</h3>
                  <Button
                    variant="ghost"
                    size="sm"
                    onClick={() => onResetCategory('ui')}
                    className="h-7 text-xs"
                  >
                    <RotateCcw className="h-3 w-3 mr-1" />
                    Reset
                  </Button>
                </div>

                {/* Theme */}
                <div className="space-y-2">
                  <label className="text-sm font-medium">Theme</label>
                  <div className="flex gap-2">
                    {['dark', 'light', 'auto'].map((theme) => (
                      <button
                        key={theme}
                        onClick={() =>
                          onUISettingsChange({ theme: theme as 'dark' | 'light' | 'auto' })
                        }
                        className={cn(
                          'flex-1 px-4 py-2 rounded text-sm font-medium transition-colors',
                          settings.ui.theme === theme
                            ? 'bg-primary text-primary-foreground'
                            : 'bg-muted hover:bg-muted/80'
                        )}
                      >
                        {theme.charAt(0).toUpperCase() + theme.slice(1)}
                      </button>
                    ))}
                  </div>
                  <p className="text-xs text-muted-foreground">
                    Use the theme toggle in header for quick switching.
                  </p>
                </div>

                {/* Font Size */}
                <div className="space-y-2">
                  <label className="text-sm font-medium">Font Size</label>
                  <div className="flex gap-2">
                    {['small', 'medium', 'large'].map((size) => (
                      <button
                        key={size}
                        onClick={() =>
                          onUISettingsChange({ fontSize: size as 'small' | 'medium' | 'large' })
                        }
                        className={cn(
                          'flex-1 px-4 py-2 rounded text-sm font-medium transition-colors',
                          settings.ui.fontSize === size
                            ? 'bg-primary text-primary-foreground'
                            : 'bg-muted hover:bg-muted/80'
                        )}
                      >
                        {size.charAt(0).toUpperCase() + size.slice(1)}
                      </button>
                    ))}
                  </div>
                  <p className="text-xs text-muted-foreground">
                    Adjust the UI font size. Requires reload.
                  </p>
                </div>
              </div>
            )}

            {/* Performance Tab */}
            {activeTab === 'performance' && (
              <div className="space-y-6">
                <div className="flex items-center justify-between">
                  <h3 className="text-sm font-medium">Performance Settings</h3>
                  <Button
                    variant="ghost"
                    size="sm"
                    onClick={() => onResetCategory('performance')}
                    className="h-7 text-xs"
                  >
                    <RotateCcw className="h-3 w-3 mr-1" />
                    Reset
                  </Button>
                </div>

                {/* Peak Calculation Quality */}
                <div className="space-y-2">
                  <label className="text-sm font-medium">Peak Calculation Quality</label>
                  <div className="flex gap-2">
                    {['low', 'medium', 'high'].map((quality) => (
                      <button
                        key={quality}
                        onClick={() =>
                          onPerformanceSettingsChange({
                            peakCalculationQuality: quality as 'low' | 'medium' | 'high',
                          })
                        }
                        className={cn(
                          'flex-1 px-4 py-2 rounded text-sm font-medium transition-colors',
                          settings.performance.peakCalculationQuality === quality
                            ? 'bg-primary text-primary-foreground'
                            : 'bg-muted hover:bg-muted/80'
                        )}
                      >
                        {quality.charAt(0).toUpperCase() + quality.slice(1)}
                      </button>
                    ))}
                  </div>
                  <p className="text-xs text-muted-foreground">
                    Higher quality = more accurate waveforms, slower processing.
                  </p>
                </div>

                {/* Waveform Rendering Quality */}
                <div className="space-y-2">
                  <label className="text-sm font-medium">Waveform Rendering Quality</label>
                  <div className="flex gap-2">
                    {['low', 'medium', 'high'].map((quality) => (
                      <button
                        key={quality}
                        onClick={() =>
                          onPerformanceSettingsChange({
                            waveformRenderingQuality: quality as 'low' | 'medium' | 'high',
                          })
                        }
                        className={cn(
                          'flex-1 px-4 py-2 rounded text-sm font-medium transition-colors',
                          settings.performance.waveformRenderingQuality === quality
                            ? 'bg-primary text-primary-foreground'
                            : 'bg-muted hover:bg-muted/80'
                        )}
                      >
                        {quality.charAt(0).toUpperCase() + quality.slice(1)}
                      </button>
                    ))}
                  </div>
                  <p className="text-xs text-muted-foreground">
                    Lower quality = better performance on slower devices.
                  </p>
                </div>

                {/* Enable Spectrogram */}
                <div className="flex items-center justify-between p-3 bg-muted/50 rounded">
                  <div>
                    <div className="text-sm font-medium">Enable Spectrogram</div>
                    <p className="text-xs text-muted-foreground">
                      Show spectrogram in analysis tools (requires more CPU)
                    </p>
                  </div>
                  <input
                    type="checkbox"
                    checked={settings.performance.enableSpectrogram}
                    onChange={(e) =>
                      onPerformanceSettingsChange({ enableSpectrogram: e.target.checked })
                    }
                    className="h-4 w-4"
                  />
                </div>

                {/* Max File Size */}
                <div className="space-y-2">
                  <div className="flex items-center justify-between">
                    <label className="text-sm font-medium">Maximum File Size</label>
                    <span className="text-xs font-mono text-muted-foreground">
                      {settings.performance.maxFileSizeMB} MB
                    </span>
                  </div>
                  <Slider
                    value={[settings.performance.maxFileSizeMB]}
                    onValueChange={([value]) =>
                      onPerformanceSettingsChange({ maxFileSizeMB: value })
                    }
                    min={100}
                    max={1000}
                    step={50}
                    className="w-full"
                  />
                  <p className="text-xs text-muted-foreground">
                    Warn when importing files larger than this. Default: 500 MB.
                  </p>
                </div>
              </div>
            )}
          </div>

          {/* Footer */}
          <div className="flex items-center justify-end gap-2 px-6 py-4 border-t border-border bg-muted/30">
            <Button variant="default" onClick={onClose}>
              Done
            </Button>
          </div>
        </div>
      </div>
    </>
  );
}