import React from 'react';
import { useADHDMode, defaultADHDSettings } from '../providers/ADHDModeProvider';
import { Card, CardContent, CardDescription, CardHeader, CardTitle } from '@/components/ui/card';
import { Switch } from '@/components/ui/switch';
import { Slider } from '@/components/ui/slider';
import { Label } from '@/components/ui/label';
import {
  Select,
  SelectContent,
  SelectItem,
  SelectTrigger,
  SelectValue,
} from '@/components/ui/select';
import { Button } from '@/components/ui/button';
import {
  Brain,
  Timer,
  Sparkles,
  Coffee,
  Target,
  Battery,
  Zap,
  Shield,
  RotateCcw,
} from 'lucide-react';
import { useTranslation } from 'react-i18next';
import { ADHDModeToggle } from '../ADHDModeToggle';

export function ADHDSettingsPanel() {
  const { t } = useTranslation();
  const { isEnabled, settings, updateSettings } = useADHDMode();

  const handleReset = () => {
    updateSettings(defaultADHDSettings);
  };

  return (
    <div className="space-y-6">
      {/* Main Toggle */}
      <ADHDModeToggle showLabel={true} />

      {/* Settings (only shown when enabled) */}
      {isEnabled && (
        <>
          {/* Visual & Interaction Settings */}
          <Card>
            <CardHeader>
              <CardTitle className="flex items-center gap-2 text-lg">
                <Target className="h-5 w-5" />
                {t('adhd.settings.visualTitle')}
              </CardTitle>
              <CardDescription>
                {t('adhd.settings.visualDesc')}
              </CardDescription>
            </CardHeader>
            <CardContent className="space-y-6">
              {/* Reduced Animations */}
              <div className="flex items-center justify-between">
                <div className="space-y-0.5">
                  <Label className="text-base">{t('adhd.settings.reducedAnimations')}</Label>
                  <p className="text-sm text-muted-foreground">
                    {t('adhd.settings.reducedAnimationsDesc')}
                  </p>
                </div>
                <Switch
                  checked={settings.reducedAnimations}
                  onCheckedChange={(checked) => updateSettings({ reducedAnimations: checked })}
                />
              </div>

              {/* Larger Touch Targets */}
              <div className="flex items-center justify-between">
                <div className="space-y-0.5">
                  <Label className="text-base">{t('adhd.settings.largerTargets')}</Label>
                  <p className="text-sm text-muted-foreground">
                    {t('adhd.settings.largerTargetsDesc')}
                  </p>
                </div>
                <Switch
                  checked={settings.largerTargets}
                  onCheckedChange={(checked) => updateSettings({ largerTargets: checked })}
                />
              </div>

              {/* Single Task Mode Default */}
              <div className="flex items-center justify-between">
                <div className="space-y-0.5">
                  <Label className="text-base">{t('adhd.settings.singleTaskDefault')}</Label>
                  <p className="text-sm text-muted-foreground">
                    {t('adhd.settings.singleTaskDefaultDesc')}
                  </p>
                </div>
                <Switch
                  checked={settings.singleTaskModeDefault}
                  onCheckedChange={(checked) => updateSettings({ singleTaskModeDefault: checked })}
                />
              </div>
            </CardContent>
          </Card>

          {/* Timer & Focus Settings */}
          <Card>
            <CardHeader>
              <CardTitle className="flex items-center gap-2 text-lg">
                <Timer className="h-5 w-5" />
                {t('adhd.settings.timerTitle')}
              </CardTitle>
              <CardDescription>
                {t('adhd.settings.timerDesc')}
              </CardDescription>
            </CardHeader>
            <CardContent className="space-y-6">
              {/* Visual Timer */}
              <div className="flex items-center justify-between">
                <div className="space-y-0.5">
                  <Label className="text-base">{t('adhd.settings.visualTimer')}</Label>
                  <p className="text-sm text-muted-foreground">
                    {t('adhd.settings.visualTimerDesc')}
                  </p>
                </div>
                <Switch
                  checked={settings.visualTimerEnabled}
                  onCheckedChange={(checked) => updateSettings({ visualTimerEnabled: checked })}
                />
              </div>

              {/* Hyperfocus Protection */}
              <div className="flex items-center justify-between">
                <div className="space-y-0.5">
                  <Label className="text-base flex items-center gap-2">
                    <Shield className="h-4 w-4" />
                    {t('adhd.settings.hyperfocusProtection')}
                  </Label>
                  <p className="text-sm text-muted-foreground">
                    {t('adhd.settings.hyperfocusProtectionDesc')}
                  </p>
                </div>
                <Switch
                  checked={settings.hyperfocusProtection}
                  onCheckedChange={(checked) => updateSettings({ hyperfocusProtection: checked })}
                />
              </div>

              {/* Hyperfocus Max Minutes */}
              {settings.hyperfocusProtection && (
                <div className="space-y-3">
                  <div className="flex items-center justify-between">
                    <Label>{t('adhd.settings.hyperfocusMaxMinutes')}</Label>
                    <span className="text-sm text-muted-foreground">
                      {settings.hyperfocusMaxMinutes} min
                    </span>
                  </div>
                  <Slider
                    value={[settings.hyperfocusMaxMinutes]}
                    onValueChange={([value]) => updateSettings({ hyperfocusMaxMinutes: value })}
                    min={30}
                    max={180}
                    step={15}
                    className="w-full"
                  />
                </div>
              )}
            </CardContent>
          </Card>

          {/* Break Reminder Settings */}
          <Card>
            <CardHeader>
              <CardTitle className="flex items-center gap-2 text-lg">
                <Coffee className="h-5 w-5" />
                {t('adhd.settings.breakTitle')}
              </CardTitle>
              <CardDescription>
                {t('adhd.settings.breakDesc')}
              </CardDescription>
            </CardHeader>
            <CardContent className="space-y-6">
              {/* Break Reminder Interval */}
              <div className="space-y-3">
                <div className="flex items-center justify-between">
                  <Label>{t('adhd.settings.breakInterval')}</Label>
                  <span className="text-sm text-muted-foreground">
                    {settings.breakReminderInterval} min
                  </span>
                </div>
                <Slider
                  value={[settings.breakReminderInterval]}
                  onValueChange={([value]) => updateSettings({ breakReminderInterval: value })}
                  min={15}
                  max={90}
                  step={5}
                  className="w-full"
                />
              </div>
            </CardContent>
          </Card>

          {/* Motivation Settings */}
          <Card>
            <CardHeader>
              <CardTitle className="flex items-center gap-2 text-lg">
                <Sparkles className="h-5 w-5" />
                {t('adhd.settings.motivationTitle')}
              </CardTitle>
              <CardDescription>
                {t('adhd.settings.motivationDesc')}
              </CardDescription>
            </CardHeader>
            <CardContent className="space-y-6">
              {/* Positive Messaging Level */}
              <div className="space-y-2">
                <Label>{t('adhd.settings.messagingLevel')}</Label>
                <Select
                  value={settings.positiveMessagingLevel}
                  onValueChange={(value: 'minimal' | 'normal' | 'high') =>
                    updateSettings({ positiveMessagingLevel: value })
                  }
                >
                  <SelectTrigger>
                    <SelectValue />
                  </SelectTrigger>
                  <SelectContent>
                    <SelectItem value="minimal">{t('adhd.settings.messagingMinimal')}</SelectItem>
                    <SelectItem value="normal">{t('adhd.settings.messagingNormal')}</SelectItem>
                    <SelectItem value="high">{t('adhd.settings.messagingHigh')}</SelectItem>
                  </SelectContent>
                </Select>
                <p className="text-xs text-muted-foreground">
                  {t('adhd.settings.messagingLevelDesc')}
                </p>
              </div>

              {/* Quick Win Threshold */}
              <div className="space-y-3">
                <div className="flex items-center justify-between">
                  <Label className="flex items-center gap-2">
                    <Zap className="h-4 w-4 text-yellow-500" />
                    {t('adhd.settings.quickWinThreshold')}
                  </Label>
                  <span className="text-sm text-muted-foreground">
                    {settings.quickWinThreshold} min
                  </span>
                </div>
                <Slider
                  value={[settings.quickWinThreshold]}
                  onValueChange={([value]) => updateSettings({ quickWinThreshold: value })}
                  min={5}
                  max={30}
                  step={5}
                  className="w-full"
                />
                <p className="text-xs text-muted-foreground">
                  {t('adhd.settings.quickWinThresholdDesc')}
                </p>
              </div>
            </CardContent>
          </Card>

          {/* Energy Check-ins */}
          <Card>
            <CardHeader>
              <CardTitle className="flex items-center gap-2 text-lg">
                <Battery className="h-5 w-5" />
                {t('adhd.settings.energyTitle')}
              </CardTitle>
              <CardDescription>
                {t('adhd.settings.energyDesc')}
              </CardDescription>
            </CardHeader>
            <CardContent>
              <div className="flex items-center justify-between">
                <div className="space-y-0.5">
                  <Label className="text-base">{t('adhd.settings.energyCheckIns')}</Label>
                  <p className="text-sm text-muted-foreground">
                    {t('adhd.settings.energyCheckInsDesc')}
                  </p>
                </div>
                <Switch
                  checked={settings.energyCheckInsEnabled}
                  onCheckedChange={(checked) => updateSettings({ energyCheckInsEnabled: checked })}
                />
              </div>
            </CardContent>
          </Card>

          {/* Reset Button */}
          <div className="flex justify-end">
            <Button variant="outline" onClick={handleReset}>
              <RotateCcw className="h-4 w-4 mr-2" />
              {t('adhd.settings.reset')}
            </Button>
          </div>
        </>
      )}
    </div>
  );
}