'use client';

import { useState, useEffect } from 'react';
import { useRouter } from 'next/navigation';
import { useEffectiveDriverId } from '@/lib/currentDriver';
import { getSendNotificationUseCase } from '@/lib/di-container';
import type { NotificationUrgency } from '@gridpilot/notifications/application';
import {
  Bell,
  AlertTriangle,
  Vote,
  Shield,
  ChevronDown,
  ChevronUp,
  Wrench,
  X,
  MessageSquare,
  AlertCircle,
  BellRing,
  User,
  Building2,
  LogOut,
  LogIn,
} from 'lucide-react';

type DemoNotificationType = 'protest_filed' | 'defense_requested' | 'vote_required';
type DemoUrgency = 'silent' | 'toast' | 'modal';

interface NotificationOption {
  type: DemoNotificationType;
  label: string;
  description: string;
  icon: typeof Bell;
  color: string;
}

interface UrgencyOption {
  urgency: DemoUrgency;
  label: string;
  description: string;
  icon: typeof Bell;
}

const notificationOptions: NotificationOption[] = [
  {
    type: 'protest_filed',
    label: 'Protest Against You',
    description: 'A protest was filed against you',
    icon: AlertTriangle,
    color: 'text-red-400',
  },
  {
    type: 'defense_requested',
    label: 'Defense Requested',
    description: 'A steward requests your defense',
    icon: Shield,
    color: 'text-warning-amber',
  },
  {
    type: 'vote_required',
    label: 'Vote Required',
    description: 'You need to vote on a protest',
    icon: Vote,
    color: 'text-primary-blue',
  },
];

const urgencyOptions: UrgencyOption[] = [
  {
    urgency: 'silent',
    label: 'Silent',
    description: 'Only shows in notification center',
    icon: Bell,
  },
  {
    urgency: 'toast',
    label: 'Toast',
    description: 'Shows a temporary popup',
    icon: BellRing,
  },
  {
    urgency: 'modal',
    label: 'Modal',
    description: 'Shows blocking modal (must respond)',
    icon: AlertCircle,
  },
];

type LoginMode = 'none' | 'driver' | 'sponsor';

export default function DevToolbar() {
  const router = useRouter();
  const [isExpanded, setIsExpanded] = useState(false);
  const [isMinimized, setIsMinimized] = useState(false);
  const [selectedType, setSelectedType] = useState<DemoNotificationType>('protest_filed');
  const [selectedUrgency, setSelectedUrgency] = useState<DemoUrgency>('toast');
  const [sending, setSending] = useState(false);
  const [lastSent, setLastSent] = useState<string | null>(null);
  const [loginMode, setLoginMode] = useState<LoginMode>('none');
  const [loggingIn, setLoggingIn] = useState(false);
  
  const currentDriverId = useEffectiveDriverId();

  // Sync login mode with actual cookie state on mount
  useEffect(() => {
    if (typeof document !== 'undefined') {
      const cookies = document.cookie.split(';');
      const demoModeCookie = cookies.find(c => c.trim().startsWith('gridpilot_demo_mode='));
      if (demoModeCookie) {
        const value = demoModeCookie.split('=')[1]?.trim();
        if (value === 'sponsor') {
          setLoginMode('sponsor');
        } else if (value === 'driver') {
          setLoginMode('driver');
        } else {
          setLoginMode('none');
        }
      } else {
        // Default to driver mode if no cookie (for demo purposes)
        setLoginMode('driver');
      }
    }
  }, []);

  const handleLoginAsDriver = async () => {
    setLoggingIn(true);
    try {
      // Demo: Set cookie to indicate driver mode
      document.cookie = 'gridpilot_demo_mode=driver; path=/; max-age=86400';
      setLoginMode('driver');
      // Refresh to update all components that depend on demo mode
      window.location.reload();
    } finally {
      setLoggingIn(false);
    }
  };

  const handleLoginAsSponsor = async () => {
    setLoggingIn(true);
    try {
      // Demo: Set cookie to indicate sponsor mode
      document.cookie = 'gridpilot_demo_mode=sponsor; path=/; max-age=86400';
      setLoginMode('sponsor');
      // Navigate to sponsor dashboard
      window.location.href = '/sponsor/dashboard';
    } finally {
      setLoggingIn(false);
    }
  };

  const handleLogout = async () => {
    setLoggingIn(true);
    try {
      // Demo: Clear demo mode cookie
      document.cookie = 'gridpilot_demo_mode=; path=/; max-age=0';
      setLoginMode('none');
      // Refresh to update all components
      window.location.href = '/';
    } finally {
      setLoggingIn(false);
    }
  };

  // Only show in development
  if (process.env.NODE_ENV === 'production') {
    return null;
  }

  const handleSendNotification = async () => {
    setSending(true);
    try {
      const sendNotification = getSendNotificationUseCase();
      
      let title: string;
      let body: string;
      let notificationType: 'protest_filed' | 'protest_defense_requested' | 'protest_vote_required';
      let actionUrl: string;

      switch (selectedType) {
        case 'protest_filed':
          title = '🚨 Protest Filed Against You';
          body = 'Max Verstappen has filed a protest against you for unsafe rejoining at Turn 3, Lap 12 during the Spa-Francorchamps race.';
          notificationType = 'protest_filed';
          actionUrl = '/races/race-1/stewarding';
          break;
        case 'defense_requested':
          title = '⚖️ Defense Requested';
          body = 'A steward has requested your defense regarding the incident at Turn 1 in the Monza race. Please provide your side of the story within 48 hours.';
          notificationType = 'protest_defense_requested';
          actionUrl = '/races/race-2/stewarding';
          break;
        case 'vote_required':
          title = '🗳️ Your Vote Required';
          body = 'As a league steward, you are required to vote on the protest: Driver A vs Driver B - Causing a collision at Eau Rouge.';
          notificationType = 'protest_vote_required';
          actionUrl = '/leagues/league-1/stewarding';
          break;
      }

      // For modal urgency, add actions
      const actions = selectedUrgency === 'modal' ? [
        { label: 'View Protest', type: 'primary' as const, href: actionUrl, actionId: 'view' },
        { label: 'Dismiss', type: 'secondary' as const, actionId: 'dismiss' },
      ] : undefined;

      await sendNotification.execute({
        recipientId: currentDriverId,
        type: notificationType,
        title,
        body,
        actionUrl,
        urgency: selectedUrgency as NotificationUrgency,
        requiresResponse: selectedUrgency === 'modal',
        actions,
        data: {
          protestId: `demo-protest-${Date.now()}`,
          raceId: 'race-1',
          leagueId: 'league-1',
          deadline: selectedUrgency === 'modal' ? new Date(Date.now() + 48 * 60 * 60 * 1000) : undefined,
        },
      });

      setLastSent(`${selectedType}-${selectedUrgency}`);
      setTimeout(() => setLastSent(null), 3000);
    } catch (error) {
      console.error('Failed to send demo notification:', error);
    } finally {
      setSending(false);
    }
  };

  if (isMinimized) {
    return (
      <button
        onClick={() => setIsMinimized(false)}
        className="fixed bottom-4 right-4 z-50 p-3 bg-iron-gray border border-charcoal-outline rounded-full shadow-lg hover:bg-charcoal-outline transition-colors"
        title="Open Dev Toolbar"
      >
        <Wrench className="w-5 h-5 text-primary-blue" />
      </button>
    );
  }

  return (
    <div className="fixed bottom-4 right-4 z-50 w-80 bg-deep-graphite border border-charcoal-outline rounded-xl shadow-2xl overflow-hidden">
      {/* Header */}
      <div className="flex items-center justify-between px-4 py-3 bg-iron-gray/50 border-b border-charcoal-outline">
        <div className="flex items-center gap-2">
          <Wrench className="w-4 h-4 text-primary-blue" />
          <span className="text-sm font-semibold text-white">Dev Toolbar</span>
          <span className="px-1.5 py-0.5 text-[10px] font-medium bg-primary-blue/20 text-primary-blue rounded">
            DEMO
          </span>
        </div>
        <div className="flex items-center gap-1">
          <button
            onClick={() => setIsExpanded(!isExpanded)}
            className="p-1.5 hover:bg-charcoal-outline rounded transition-colors"
          >
            {isExpanded ? (
              <ChevronDown className="w-4 h-4 text-gray-400" />
            ) : (
              <ChevronUp className="w-4 h-4 text-gray-400" />
            )}
          </button>
          <button
            onClick={() => setIsMinimized(true)}
            className="p-1.5 hover:bg-charcoal-outline rounded transition-colors"
          >
            <X className="w-4 h-4 text-gray-400" />
          </button>
        </div>
      </div>

      {/* Content */}
      {isExpanded && (
        <div className="p-4 space-y-4">
          {/* Notification Type Section */}
          <div>
            <div className="flex items-center gap-2 mb-2">
              <MessageSquare className="w-4 h-4 text-gray-400" />
              <span className="text-xs font-semibold text-gray-400 uppercase tracking-wide">
                Notification Type
              </span>
            </div>

            <div className="grid grid-cols-3 gap-1">
              {notificationOptions.map((option) => {
                const Icon = option.icon;
                const isSelected = selectedType === option.type;

                return (
                  <button
                    key={option.type}
                    onClick={() => setSelectedType(option.type)}
                    className={`
                      flex flex-col items-center gap-1 p-2 rounded-lg border transition-all text-center
                      ${isSelected
                        ? 'bg-primary-blue/20 border-primary-blue/50'
                        : 'bg-iron-gray/30 border-charcoal-outline hover:bg-iron-gray/50'
                      }
                    `}
                  >
                    <Icon className={`w-4 h-4 ${isSelected ? 'text-primary-blue' : option.color}`} />
                    <span className={`text-[10px] font-medium ${isSelected ? 'text-primary-blue' : 'text-gray-400'}`}>
                      {option.label.split(' ')[0]}
                    </span>
                  </button>
                );
              })}
            </div>
          </div>

          {/* Urgency Section */}
          <div>
            <div className="flex items-center gap-2 mb-2">
              <BellRing className="w-4 h-4 text-gray-400" />
              <span className="text-xs font-semibold text-gray-400 uppercase tracking-wide">
                Urgency Level
              </span>
            </div>

            <div className="grid grid-cols-3 gap-1">
              {urgencyOptions.map((option) => {
                const Icon = option.icon;
                const isSelected = selectedUrgency === option.urgency;

                return (
                  <button
                    key={option.urgency}
                    onClick={() => setSelectedUrgency(option.urgency)}
                    className={`
                      flex flex-col items-center gap-1 p-2 rounded-lg border transition-all text-center
                      ${isSelected
                        ? option.urgency === 'modal'
                          ? 'bg-red-500/20 border-red-500/50'
                          : option.urgency === 'toast'
                            ? 'bg-warning-amber/20 border-warning-amber/50'
                            : 'bg-gray-500/20 border-gray-500/50'
                        : 'bg-iron-gray/30 border-charcoal-outline hover:bg-iron-gray/50'
                      }
                    `}
                  >
                    <Icon className={`w-4 h-4 ${
                      isSelected
                        ? option.urgency === 'modal'
                          ? 'text-red-400'
                          : option.urgency === 'toast'
                            ? 'text-warning-amber'
                            : 'text-gray-400'
                        : 'text-gray-500'
                    }`} />
                    <span className={`text-[10px] font-medium ${
                      isSelected
                        ? option.urgency === 'modal'
                          ? 'text-red-400'
                          : option.urgency === 'toast'
                            ? 'text-warning-amber'
                            : 'text-gray-400'
                        : 'text-gray-500'
                    }`}>
                      {option.label}
                    </span>
                  </button>
                );
              })}
            </div>
            <p className="text-[10px] text-gray-600 mt-1">
              {urgencyOptions.find(o => o.urgency === selectedUrgency)?.description}
            </p>
          </div>

          {/* Send Button */}
          <button
            onClick={handleSendNotification}
            disabled={sending}
            className={`
              w-full flex items-center justify-center gap-2 py-2.5 rounded-lg font-medium text-sm transition-all
              ${lastSent
                ? 'bg-performance-green/20 border border-performance-green/30 text-performance-green'
                : 'bg-primary-blue hover:bg-primary-blue/80 text-white'
              }
              disabled:opacity-50 disabled:cursor-not-allowed
            `}
          >
            {sending ? (
              <>
                <div className="w-4 h-4 border-2 border-white border-t-transparent rounded-full animate-spin" />
                Sending...
              </>
            ) : lastSent ? (
              <>
                ✓ Notification Sent!
              </>
            ) : (
              <>
                <Bell className="w-4 h-4" />
                Send Demo Notification
              </>
            )}
          </button>

          {/* Info */}
          <div className="p-3 rounded-lg bg-iron-gray/50 border border-charcoal-outline">
            <p className="text-[10px] text-gray-500">
              <strong className="text-gray-400">Silent:</strong> Notification center only<br/>
              <strong className="text-gray-400">Toast:</strong> Temporary popup (auto-dismisses)<br/>
              <strong className="text-gray-400">Modal:</strong> Blocking popup (requires action)
            </p>
          </div>

          {/* Login Section */}
          <div className="pt-4 border-t border-charcoal-outline">
            <div className="flex items-center gap-2 mb-3">
              <LogIn className="w-4 h-4 text-gray-400" />
              <span className="text-xs font-semibold text-gray-400 uppercase tracking-wide">
                Demo Login
              </span>
            </div>

            <div className="space-y-2">
              <button
                onClick={handleLoginAsDriver}
                disabled={loggingIn || loginMode === 'driver'}
                className={`
                  w-full flex items-center gap-2 px-3 py-2 rounded-lg border text-sm font-medium transition-all
                  ${loginMode === 'driver'
                    ? 'bg-primary-blue/20 border-primary-blue/50 text-primary-blue'
                    : 'bg-iron-gray/30 border-charcoal-outline text-gray-300 hover:bg-iron-gray/50'
                  }
                  disabled:opacity-50 disabled:cursor-not-allowed
                `}
              >
                <User className="w-4 h-4" />
                {loginMode === 'driver' ? 'Logged in as Driver' : 'Login as Driver'}
              </button>

              <button
                onClick={handleLoginAsSponsor}
                disabled={loggingIn || loginMode === 'sponsor'}
                className={`
                  w-full flex items-center gap-2 px-3 py-2 rounded-lg border text-sm font-medium transition-all
                  ${loginMode === 'sponsor'
                    ? 'bg-performance-green/20 border-performance-green/50 text-performance-green'
                    : 'bg-iron-gray/30 border-charcoal-outline text-gray-300 hover:bg-iron-gray/50'
                  }
                  disabled:opacity-50 disabled:cursor-not-allowed
                `}
              >
                <Building2 className="w-4 h-4" />
                {loginMode === 'sponsor' ? 'Logged in as Sponsor' : 'Login as Sponsor'}
              </button>

              {loginMode !== 'none' && (
                <button
                  onClick={handleLogout}
                  disabled={loggingIn}
                  className="w-full flex items-center gap-2 px-3 py-2 rounded-lg border border-red-500/30 bg-red-500/10 text-red-400 text-sm font-medium hover:bg-red-500/20 transition-all disabled:opacity-50 disabled:cursor-not-allowed"
                >
                  <LogOut className="w-4 h-4" />
                  Logout
                </button>
              )}
            </div>

            <p className="text-[10px] text-gray-600 mt-2">
              Switch between driver and sponsor views for demo purposes.
            </p>
          </div>
        </div>
      )}

      {/* Collapsed state hint */}
      {!isExpanded && (
        <div className="px-4 py-2 text-xs text-gray-500">
          Click ↑ to expand dev tools
        </div>
      )}
    </div>
  );
}