'use client';

import { useState, useEffect } from 'react';
import { useRouter } from 'next/navigation';
import type { Notification, NotificationAction } from './notificationTypes';
import {
  Bell,
  AlertTriangle,
  Shield,
  Vote,
  Trophy,
  Users,
  Flag,
  AlertCircle,
  Clock,
  TrendingUp,
  Award,
  Star,
  Medal,
  Target,
  Zap,
  X,
} from 'lucide-react';
import Button from '@/ui/Button';

interface ModalNotificationProps {
  notification: Notification;
  onAction: (notification: Notification, actionId?: string) => void;
  onDismiss?: (notification: Notification) => void;
}

const notificationIcons: Record<string, typeof Bell> = {
  protest_filed: AlertTriangle,
  protest_defense_requested: Shield,
  protest_vote_required: Vote,
  penalty_issued: AlertTriangle,
  race_results_posted: Trophy,
  race_performance_summary: Medal,
  race_final_results: Star,
  league_invite: Users,
  race_reminder: Flag,
};

const notificationColors: Record<string, { bg: string; border: string; text: string; glow: string }> = {
  protest_filed: { 
    bg: 'bg-red-500/10', 
    border: 'border-red-500/50', 
    text: 'text-red-400',
    glow: 'shadow-[0_0_60px_rgba(239,68,68,0.3)]',
  },
  protest_defense_requested: { 
    bg: 'bg-warning-amber/10', 
    border: 'border-warning-amber/50', 
    text: 'text-warning-amber',
    glow: 'shadow-[0_0_60px_rgba(245,158,11,0.3)]',
  },
  protest_vote_required: { 
    bg: 'bg-primary-blue/10', 
    border: 'border-primary-blue/50', 
    text: 'text-primary-blue',
    glow: 'shadow-[0_0_60px_rgba(25,140,255,0.3)]',
  },
  penalty_issued: {
    bg: 'bg-red-500/10',
    border: 'border-red-500/50',
    text: 'text-red-400',
    glow: 'shadow-[0_0_60px_rgba(239,68,68,0.3)]',
  },
  race_performance_summary: {
    bg: 'bg-gradient-to-br from-yellow-400/20 via-orange-500/20 to-red-500/20',
    border: 'border-yellow-400/60',
    text: 'text-yellow-400',
    glow: 'shadow-[0_0_80px_rgba(251,191,36,0.4)]',
  },
  race_final_results: {
    bg: 'bg-gradient-to-br from-purple-500/20 via-pink-500/20 to-indigo-500/20',
    border: 'border-purple-400/60',
    text: 'text-purple-400',
    glow: 'shadow-[0_0_80px_rgba(168,85,247,0.4)]',
  },
};

export default function ModalNotification({
  notification,
  onAction,
  onDismiss,
}: ModalNotificationProps) {
  const [isVisible, setIsVisible] = useState(false);
  const router = useRouter();

  useEffect(() => {
    // Animate in
    const timeout = setTimeout(() => setIsVisible(true), 10);
    return () => clearTimeout(timeout);
  }, []);

  // Handle ESC key to dismiss
  useEffect(() => {
    const handleKeyDown = (event: KeyboardEvent) => {
      if (event.key === 'Escape' && onDismiss && !notification.requiresResponse) {
        onDismiss(notification);
      }
    };

    document.addEventListener('keydown', handleKeyDown);
    return () => document.removeEventListener('keydown', handleKeyDown);
  }, [notification, onDismiss]);

  const handleAction = (action: NotificationAction) => {
    onAction(notification, action.id);
    if (action.href) {
      router.push(action.href);
    }
  };

  const handlePrimaryAction = () => {
    onAction(notification, 'primary');
    if (notification.actionUrl) {
      router.push(notification.actionUrl);
    }
  };

  const Icon = notificationIcons[notification.type] || AlertCircle;
  const colors = notificationColors[notification.type] || {
    bg: 'bg-warning-amber/10',
    border: 'border-warning-amber/50',
    text: 'text-warning-amber',
    glow: 'shadow-[0_0_60px_rgba(245,158,11,0.3)]',
  };

  const data: Record<string, unknown> = notification.data ?? {};

  const getNumber = (value: unknown): number | null => {
    if (typeof value === 'number' && Number.isFinite(value)) return value;
    if (typeof value === 'string') {
      const parsed = Number(value);
      if (Number.isFinite(parsed)) return parsed;
    }
    return null;
  };

  const getString = (value: unknown): string | null => {
    if (typeof value === 'string') return value;
    if (typeof value === 'number' && Number.isFinite(value)) return String(value);
    return null;
  };

  const isValidDate = (value: unknown): value is Date => value instanceof Date && !Number.isNaN(value.getTime());

  // Check if there's a deadline
  const deadlineValue = data.deadline;
  const deadline: Date | null =
    isValidDate(deadlineValue)
      ? deadlineValue
      : typeof deadlineValue === 'string' || typeof deadlineValue === 'number'
        ? new Date(deadlineValue)
        : null;
  const hasDeadline = !!deadline && !Number.isNaN(deadline.getTime());

  // Special celebratory styling for race notifications
  const isRaceNotification = notification.type.startsWith('race_');
  const isPerformanceSummary = notification.type === 'race_performance_summary';
  const isFinalResults = notification.type === 'race_final_results';

  const provisionalRatingChange = getNumber(data.provisionalRatingChange) ?? 0;
  const finalRatingChange = getNumber(data.finalRatingChange) ?? 0;
  const ratingChange = provisionalRatingChange || finalRatingChange;
  const protestId = getString(data.protestId);

  return (
    <div
      className={`
        fixed inset-0 z-[100] flex items-center justify-center p-4
        transition-all duration-300
        ${isVisible ? 'bg-black/70 backdrop-blur-sm' : 'bg-transparent'}
        ${isRaceNotification ? 'bg-gradient-to-br from-black/80 via-indigo-900/10 to-black/80' : ''}
      `}
    >
      <div
        className={`
          w-full max-w-lg transform transition-all duration-300
          ${isVisible ? 'scale-100 opacity-100' : 'scale-95 opacity-0'}
          ${isRaceNotification ? '' : ''}
        `}
      >
        <div
          className={`
            rounded-2xl border-2 ${colors.border} ${colors.bg}
            backdrop-blur-md ${colors.glow}
            overflow-hidden
            ${isRaceNotification ? 'relative' : ''}
          `}
        >
          {/* Header with pulse animation */}
          <div className={`relative px-6 py-4 ${colors.bg} border-b ${colors.border} ${isRaceNotification ? 'bg-gradient-to-r from-transparent via-yellow-500/10 to-transparent' : ''}`}>
            {/* Subtle pulse ring */}
            <div className="absolute top-4 left-6 w-12 h-12">
              <div className={`absolute inset-0 rounded-full ${colors.bg} opacity-10`} />
            </div>

            <div className="flex items-center justify-between">
              <div className="flex items-center gap-4">
                <div className={`relative p-3 rounded-xl ${colors.bg} border ${colors.border} ${isRaceNotification ? 'shadow-lg' : ''}`}>
                  <Icon className={`w-6 h-6 ${colors.text}`} />
                </div>
                <div>
                  <p className={`text-xs font-semibold uppercase tracking-wide ${isRaceNotification ? 'text-yellow-400' : 'text-gray-400'}`}>
                    {isRaceNotification ? (isPerformanceSummary ? '🏁 Race Complete!' : '🏆 Championship Update') : 'Action Required'}
                  </p>
                  <h2 className={`text-xl font-bold ${isRaceNotification ? 'text-white' : 'text-white'}`}>
                    {notification.title}
                  </h2>
                </div>
              </div>

              {/* X button for dismissible notifications */}
              {onDismiss && !notification.requiresResponse && (
                <button
                  onClick={() => onDismiss(notification)}
                  className="p-2 rounded-full hover:bg-white/10 transition-colors"
                  aria-label="Dismiss notification"
                >
                  <X className="w-5 h-5 text-gray-400 hover:text-white" />
                </button>
              )}
            </div>
          </div>

          {/* Body */}
          <div className={`px-6 py-5 ${isRaceNotification ? 'bg-gradient-to-b from-transparent to-yellow-500/5' : ''}`}>
            <p className={`leading-relaxed ${isRaceNotification ? 'text-white text-lg font-medium' : 'text-gray-300'}`}>
              {notification.message}
            </p>

            {/* Race performance stats */}
            {isRaceNotification && (
              <div className="mt-4 grid grid-cols-2 gap-3">
                <div className="bg-black/20 rounded-lg p-3 border border-yellow-400/20">
                  <div className="text-xs text-yellow-300 font-medium mb-1">POSITION</div>
                  <div className="text-2xl font-bold text-white">
                    {notification.data?.position === 'DNF' ? 'DNF' : `P${notification.data?.position || '?'}`}
                  </div>
                </div>
                <div className="bg-black/20 rounded-lg p-3 border border-yellow-400/20">
                  <div className="text-xs text-yellow-300 font-medium mb-1">RATING CHANGE</div>
                  <div className={`text-2xl font-bold ${ratingChange >= 0 ? 'text-green-400' : 'text-red-400'}`}>
                    {ratingChange >= 0 ? '+' : ''}
                    {ratingChange}
                  </div>
                </div>
              </div>
            )}

            {/* Deadline warning */}
            {hasDeadline && !isRaceNotification && (
              <div className="mt-4 flex items-center gap-2 px-4 py-3 rounded-lg bg-warning-amber/10 border border-warning-amber/30">
                <Clock className="w-5 h-5 text-warning-amber" />
                <div>
                  <p className="text-sm font-medium text-warning-amber">Response Required</p>
                  <p className="text-xs text-gray-400">
                    Please respond by {deadline ? deadline.toLocaleDateString() : ''} at {deadline ? deadline.toLocaleTimeString() : ''}
                  </p>
                </div>
              </div>
            )}

            {/* Additional context from data */}
            {protestId && (
              <div className="mt-4 p-3 rounded-lg bg-iron-gray/50 border border-charcoal-outline">
                <p className="text-xs text-gray-500 mb-1">Related Protest</p>
                <p className="text-sm text-gray-300 font-mono">
                  {protestId}
                </p>
              </div>
            )}

          </div>

          {/* Actions */}
          <div className={`px-6 py-4 border-t ${isRaceNotification ? (isPerformanceSummary ? 'border-yellow-400/60 bg-gradient-to-r from-yellow-500/10 to-orange-500/10' : 'border-purple-400/60 bg-gradient-to-r from-purple-500/10 to-pink-500/10') : 'border-charcoal-outline bg-iron-gray/30'}`}>
            {notification.actions && notification.actions.length > 0 ? (
              <div className="flex flex-wrap gap-3 justify-end">
                {notification.actions.map((action, index) => (
                  <Button
                    key={index}
                    variant={action.type === 'primary' ? 'primary' : 'secondary'}
                    onClick={() => handleAction(action)}
                    className={`${action.type === 'danger' ? 'bg-red-500 hover:bg-red-600 text-white' : ''} ${isRaceNotification ? 'shadow-lg hover:shadow-yellow-400/30' : ''}`}
                  >
                    {action.label}
                  </Button>
                ))}
              </div>
            ) : (
              <div className="flex flex-wrap gap-3 justify-end">
                {isRaceNotification ? (
                  <>
                    <Button
                      variant="secondary"
                      onClick={() => (onDismiss ? onDismiss(notification) : onAction(notification, 'dismiss'))}
                      className="shadow-lg hover:shadow-yellow-400/30"
                    >
                      Dismiss
                    </Button>
                    <Button
                      variant="secondary"
                      onClick={() => handleAction({ id: 'share', label: 'Share Achievement', type: 'secondary' })}
                      className="shadow-lg hover:shadow-yellow-400/30"
                    >
                      🎉 Share
                    </Button>
                    <Button
                      variant={isPerformanceSummary ? 'race-performance' : 'race-final'}
                      onClick={handlePrimaryAction}
                    >
                      {isPerformanceSummary ? '🏁 View Race Results' : '🏆 View Standings'}
                    </Button>
                  </>
                ) : (
                  <Button variant="primary" onClick={handlePrimaryAction}>
                    {notification.actionUrl ? 'View Details' : 'Acknowledge'}
                  </Button>
                )}
              </div>
            )}
          </div>

          {/* Cannot dismiss warning */}
          {notification.requiresResponse && !isRaceNotification && (
            <div className="px-6 py-2 bg-red-500/10 border-t border-red-500/20">
              <p className="text-xs text-red-400 text-center">
                ⚠️ This notification requires your action and cannot be dismissed
              </p>
            </div>
          )}
        </div>
      </div>
    </div>
  );
}