"use client";
import React, { useState, useMemo } from 'react';
import {
  Calendar, ChevronLeft, ChevronRight, Plus, Search, Settings,
  Clock, Users, MapPin, Bell, Repeat, Mail, Phone, Video,
  Edit3, Trash2, Copy, Forward, Reply, MoreHorizontal,
  Filter, RefreshCw, Print, Import, Export, Share2,
  ChevronDown, User, Building, Globe, AlertCircle,
  CheckCircle2, X, Eye, EyeOff, Star, Flag, Tag
} from 'lucide-react';
import { cn } from "@/lib/utils";

// Sample calendar data
const sampleEvents = [
  {
    id: 1,
    title: "Team Standup",
    start: "2025-06-28T09:00:00",
    end: "2025-06-28T09:30:00",
    type: "meeting",
    location: "Conference Room A",
    attendees: ["john@company.com", "jane@company.com", "mike@company.com"],
    description: "Daily team synchronization meeting",
    priority: "high",
    status: "accepted",
    organizer: "sarah@company.com",
    category: "work",
    recurring: true
  },
  {
    id: 2,
    title: "Client Presentation",
    start: "2025-06-28T14:00:00",
    end: "2025-06-28T15:30:00",
    type: "meeting",
    location: "Board Room",
    attendees: ["client@external.com", "manager@company.com"],
    description: "Q2 results presentation to key client",
    priority: "high",
    status: "tentative",
    organizer: "me@company.com",
    category: "important",
    recurring: false
  },
  {
    id: 3,
    title: "Lunch with Marketing Team",
    start: "2025-06-28T12:00:00",
    end: "2025-06-28T13:00:00",
    type: "personal",
    location: "Downtown Cafe",
    attendees: ["marketing@company.com"],
    description: "Monthly team lunch",
    priority: "normal",
    status: "accepted",
    organizer: "marketing@company.com",
    category: "social",
    recurring: true
  },
  {
    id: 4,
    title: "Project Review",
    start: "2025-06-29T10:00:00",
    end: "2025-06-29T11:00:00",
    type: "meeting",
    location: "Online",
    attendees: ["team@company.com"],
    description: "Weekly project status review",
    priority: "normal",
    status: "accepted",
    organizer: "me@company.com",
    category: "work",
    recurring: true
  },
  {
    id: 5,
    title: "Doctor Appointment",
    start: "2025-06-30T15:00:00",
    end: "2025-06-30T16:00:00",
    type: "personal",
    location: "Medical Center",
    attendees: [],
    description: "Annual checkup",
    priority: "normal",
    status: "accepted",
    organizer: "me@company.com",
    category: "personal",
    recurring: false
  }
];

const categoriesData = [
  { name: "Work", color: "blue", visible: true, count: 12 },
  { name: "Personal", color: "green", visible: true, count: 5 },
  { name: "Important", color: "red", visible: true, count: 3 },
  { name: "Social", color: "purple", visible: true, count: 8 },
  { name: "Travel", color: "orange", visible: false, count: 2 },
  { name: "Family", color: "pink", visible: true, count: 4 }
];

// Date utilities
const formatDate = (date) => {
  return new Intl.DateTimeFormat('en-US', {
    weekday: 'long',
    year: 'numeric',
    month: 'long',
    day: 'numeric'
  }).format(date);
};

const formatTime = (dateString) => {
  return new Intl.DateTimeFormat('en-US', {
    hour: 'numeric',
    minute: '2-digit',
    hour12: true
  }).format(new Date(dateString));
};

const formatDateShort = (date) => {
  return new Intl.DateTimeFormat('en-US', {
    month: 'short',
    day: 'numeric'
  }).format(date);
};

import { Badge } from "@/components/ui/badge";
import { Button } from "@/components/ui/button";
import { Input } from "@/components/ui/input";
import { Separator } from "@/components/ui/separator";
import { Tabs, TabsContent, TabsList, TabsTrigger } from "@/components/ui/tabs";
import {
  DropdownMenu,
  DropdownMenuContent,
  DropdownMenuItem,
  DropdownMenuTrigger,
  DropdownMenuSeparator,
} from "@/components/ui/dropdown-menu";
import {
  ContextMenu,
  ContextMenuContent,
  ContextMenuItem,
  ContextMenuTrigger,
  ContextMenuSeparator,
} from "@/components/ui/context-menu";
import {
  Tooltip,
  TooltipContent,
  TooltipTrigger,
  TooltipProvider,
} from "@/components/ui/tooltip";
import {
  ResizableHandle,
  ResizablePanel,
  ResizablePanelGroup,
} from "@/components/ui/resizable";
import { ScrollArea } from "@/components/ui/scroll-area";
import {
  Select,
  SelectContent,
  SelectItem,
  SelectTrigger,
  SelectValue,
} from "@/components/ui/select";
import Footer from '../footer';

const CalendarSidebar = ({ isCollapsed, categories, onCategoryToggle, currentDate, onDateSelect }) => {
  const [selectedCategories, setSelectedCategories] = useState(
    categories.filter(cat => cat.visible).map(cat => cat.name)
  );

  const toggleCategory = (categoryName) => {
    const newSelected = selectedCategories.includes(categoryName)
      ? selectedCategories.filter(name => name !== categoryName)
      : [...selectedCategories, categoryName];
    setSelectedCategories(newSelected);
    onCategoryToggle(categoryName);
  };

  const generateCalendarDays = () => {
    const today = new Date();
    const currentMonth = today.getMonth();
    const currentYear = today.getFullYear();
    const firstDay = new Date(currentYear, currentMonth, 1);
    const lastDay = new Date(currentYear, currentMonth + 1, 0);
    const startDate = new Date(firstDay);
    startDate.setDate(startDate.getDate() - firstDay.getDay());

    const days = [];
    for (let i = 0; i < 42; i++) {
      const date = new Date(startDate);
      date.setDate(startDate.getDate() + i);
      days.push(date);
    }
    return days;
  };

  const calendarDays = generateCalendarDays();
  const today = new Date();

  const quickActions = [
    { icon: Plus, label: "New Event", action: "new-event" },
    { icon: Users, label: "New Meeting", action: "new-meeting" },
  ];

  if (isCollapsed) {
    return (
      <div className="p-2 space-y-2 bg-card border-r border-border">
        {quickActions.map((action, index) => (
          <Tooltip key={index} delayDuration={0}>
            <TooltipTrigger asChild>
              <Button variant="ghost" size="icon" className="w-9 h-9 bg-secondary hover:bg-secondary/80">
                <action.icon className="h-4 w-4" />
              </Button>
            </TooltipTrigger>
            <TooltipContent side="right" className="bg-popover text-popover-foreground border-border">
              {action.label}
            </TooltipContent>
          </Tooltip>
        ))}
      </div>
    );
  }

  return (
    <div className="flex flex-col h-full bg-card border-r border-border w-[200px]">
      {/* Quick Actions */}
      <div className="p-3 border-b border-border bg-secondary">
        <h3 className="text-sm font-semibold text-foreground mb-2 font-mono">Quick Actions</h3>
        <div className="space-y-1">
          {quickActions.map((action, index) => (
            <Button
              key={index}
              variant="ghost"
              size="sm"
              className="w-full justify-start text-xs h-8 hover:bg-secondary/80 bg-secondary"
            >
              <action.icon className="h-3 w-3 mr-2" />
              {action.label}
            </Button>
          ))}
        </div>
      </div>

      {/* Mini Calendar */}
      <div className="p-3 border-b border-border bg-secondary">
        <div className="flex items-center justify-between mb-2">
          <h3 className="text-sm font-semibold text-foreground font-mono">
            {today.toLocaleDateString('en-US', { month: 'long', year: 'numeric' })}
          </h3>
          <div className="flex gap-1">
            <Button variant="ghost" size="icon" className="h-6 w-6 bg-secondary hover:bg-secondary/80">
              <ChevronLeft className="h-3 w-3" />
            </Button>
            <Button variant="ghost" size="icon" className="h-6 w-6 bg-secondary hover:bg-secondary/80">
              <ChevronRight className="h-3 w-3" />
            </Button>
          </div>
        </div>
        <div className="grid grid-cols-7 gap-1 text-xs font-mono">
          {['S', 'M', 'T', 'W', 'T', 'F', 'S'].map(day => (
            <div key={day} className="text-center text-foreground font-medium p-1">
              {day}
            </div>
          ))}
          {calendarDays.map((date, index) => {
            const isToday = date.toDateString() === today.toDateString();
            const isCurrentMonth = date.getMonth() === today.getMonth();
            return (
              <button
                key={index}
                onClick={() => onDateSelect(date)}
                className={cn(
                  "p-1 text-center rounded-none hover:bg-secondary/80 transition-colors font-mono",
                  isToday && "bg-primary text-primary-foreground hover:bg-primary",
                  !isCurrentMonth && "text-muted-foreground",
                  isCurrentMonth && !isToday && "text-foreground"
                )}
              >
                {date.getDate()}
              </button>
            );
          })}
        </div>
      </div>

      {/* Categories */}
      <div className="flex-1 p-3 bg-secondary">
        <h3 className="text-sm font-semibold text-foreground mb-2 font-mono">My Calendars</h3>
        <ScrollArea className="h-full">
          <div className="space-y-1">
            {categories.map((category) => (
              <div
                key={category.name}
                className="flex items-center justify-between p-1 rounded-none hover:bg-secondary/80"
              >
                <button
                  onClick={() => toggleCategory(category.name)}
                  className="flex items-center gap-2 flex-1 text-left"
                >
                  <div className="flex items-center gap-2">
                    {category.visible ? (
                      <Eye className="h-3 w-3 text-foreground" />
                    ) : (
                      <EyeOff className="h-3 w-3 text-muted-foreground" />
                    )}
                    <div
                      className={cn(
                        "w-3 h-3 rounded-none",
                        category.color === 'blue' && "bg-blue-500",
                        category.color === 'green' && "bg-green-500",
                        category.color === 'red' && "bg-red-500",
                        category.color === 'purple' && "bg-purple-500",
                        category.color === 'orange' && "bg-orange-500",
                        category.color === 'pink' && "bg-pink-500"
                      )}
                    />
                  </div>
                  <span className={cn(
                    "text-xs font-mono",
                    category.visible ? "text-foreground" : "text-muted-foreground"
                  )}>
                    {category.name}
                  </span>
                </button>
                <span className="text-xs text-foreground font-mono">({category.count})</span>
              </div>
            ))}
          </div>
        </ScrollArea>
      </div>
    </div>
  );
};

const EventCard = ({ event, onAction }) => {
  const getCategoryColor = (category) => {
    const colors = {
      work: "bg-blue-500/20 border-l-blue-500 text-foreground",
      personal: "bg-green-500/20 border-l-green-500 text-foreground",
      important: "bg-red-500/20 border-l-red-500 text-foreground",
      social: "bg-purple-500/20 border-l-purple-500 text-foreground"
    };
    return colors[category] || "bg-secondary border-l-muted text-foreground";
  };

  const getPriorityIcon = (priority) => {
    if (priority === 'high') return <Flag className="h-3 w-3 text-red-500" />;
    return null;
  };

  const getStatusIcon = (status) => {
    switch (status) {
      case 'accepted': return <CheckCircle2 className="h-3 w-3 text-green-500" />;
      case 'tentative': return <AlertCircle className="h-3 w-3 text-yellow-500" />;
      case 'declined': return <X className="h-3 w-3 text-red-500" />;
      default: return null;
    }
  };

  return (
    <ContextMenu>
      <ContextMenuTrigger asChild>
        <div className={cn(
          "p-2 rounded-none border-l-4 cursor-pointer hover:shadow-none transition-all mb-1 border border-border",
          getCategoryColor(event.category)
        )}>
          <div className="flex items-start justify-between mb-1">
            <div className="flex items-center gap-1">
              {getPriorityIcon(event.priority)}
              <h4 className="text-sm font-medium truncate font-mono">{event.title}</h4>
            </div>
            <div className="flex items-center gap-1">
              {event.recurring && <Repeat className="h-3 w-3 text-foreground" />}
              {getStatusIcon(event.status)}
            </div>
          </div>
          <div className="text-xs text-foreground space-y-1 font-mono">
            <div className="flex items-center gap-1">
              <Clock className="h-3 w-3" />
              {formatTime(event.start)} - {formatTime(event.end)}
            </div>
            {event.location && (
              <div className="flex items-center gap-1">
                <MapPin className="h-3 w-3" />
                <span className="truncate">{event.location}</span>
              </div>
            )}
            {event.attendees.length > 0 && (
              <div className="flex items-center gap-1">
                <Users className="h-3 w-3" />
                <span>{event.attendees.length} attendees</span>
              </div>
            )}
          </div>
        </div>
      </ContextMenuTrigger>
      <ContextMenuContent className="bg-popover text-popover-foreground border-border font-mono">
        <ContextMenuItem onClick={() => onAction('open', event)} className="hover:bg-primary hover:text-primary-foreground">
          <Eye className="h-4 w-4 mr-2" />
          Open
        </ContextMenuItem>
        <ContextMenuItem onClick={() => onAction('edit', event)} className="hover:bg-primary hover:text-primary-foreground">
          <Edit3 className="h-4 w-4 mr-2" />
          Edit
        </ContextMenuItem>
        <ContextMenuSeparator className="border-t border-border" />
        <ContextMenuItem onClick={() => onAction('forward', event)} className="hover:bg-primary hover:text-primary-foreground">
          <Forward className="h-4 w-4 mr-2" />
          Forward
        </ContextMenuItem>
        <ContextMenuItem onClick={() => onAction('copy', event)} className="hover:bg-primary hover:text-primary-foreground">
          <Copy className="h-4 w-4 mr-2" />
          Copy
        </ContextMenuItem>
        <ContextMenuSeparator className="border-t border-border" />
        <ContextMenuItem onClick={() => onAction('delete', event)} className="text-destructive hover:bg-primary hover:text-primary-foreground">
          <Trash2 className="h-4 w-4 mr-2" />
          Delete
        </ContextMenuItem>
      </ContextMenuContent>
    </ContextMenu>
  );
};

const CalendarView = ({ view, events, currentDate, onEventAction }) => {
  const filteredEvents = events.filter(event => {
    const eventDate = new Date(event.start);
    if (view === 'day') {
      return eventDate.toDateString() === currentDate.toDateString();
    } else if (view === 'week') {
      const weekStart = new Date(currentDate);
      weekStart.setDate(currentDate.getDate() - currentDate.getDay());
      const weekEnd = new Date(weekStart);
      weekEnd.setDate(weekStart.getDate() + 6);
      return eventDate >= weekStart && eventDate <= weekEnd;
    } else if (view === 'month') {
      return eventDate.getMonth() === currentDate.getMonth() &&
        eventDate.getFullYear() === currentDate.getFullYear();
    }
    return true;
  });

  if (view === 'day') {
    const hours = Array.from({ length: 24 }, (_, i) => i);
    const dayEvents = filteredEvents.sort((a, b) => new Date(a.start).getTime() - new Date(b.start).getTime());

    return (
      <div className="flex flex-col h-full bg-background">
        <div className="p-4 bg-card border-b border-border">
          <h2 className="text-lg font-semibold text-foreground font-mono">
            {formatDate(currentDate)}
          </h2>
        </div>
        <ScrollArea className="flex-1">
          <div className="p-4 space-y-2">
            {dayEvents.length > 0 ? (
              dayEvents.map(event => (
                <EventCard
                  key={event.id}
                  event={event}
                  onAction={onEventAction}
                />
              ))
            ) : (
              <div className="text-center py-8 text-foreground font-mono">
                <Calendar className="h-12 w-12 mx-auto mb-2 text-muted-foreground" />
                <p>No events scheduled for this day</p>
              </div>
            )}
          </div>
        </ScrollArea>
      </div>
    );
  }

  if (view === 'week') {
    const weekStart = new Date(currentDate);
    weekStart.setDate(currentDate.getDate() - currentDate.getDay());
    const weekDays = Array.from({ length: 7 }, (_, i) => {
      const day = new Date(weekStart);
      day.setDate(weekStart.getDate() + i);
      return day;
    });

    return (
      <div className="flex flex-col h-full bg-background">
        <div className="p-4 bg-card border-b border-border">
          <h2 className="text-lg font-semibold text-foreground font-mono">
            Week of {formatDateShort(weekStart)} - {formatDateShort(weekDays[6])}
          </h2>
        </div>
        <div className="flex-1 grid grid-cols-7 gap-1 p-2">
          {weekDays.map((day, index) => {
            const dayEvents = filteredEvents.filter(event =>
              new Date(event.start).toDateString() === day.toDateString()
            );
            const isToday = day.toDateString() === new Date().toDateString();

            return (
              <div key={index} className="border border-border rounded-none bg-card min-h-[200px]">
                <div className={cn(
                  "p-2 text-center border-b border-border text-sm font-medium font-mono",
                  isToday ? "bg-primary text-primary-foreground" : "bg-secondary text-foreground"
                )}>
                  <div>{day.toLocaleDateString('en-US', { weekday: 'short' })}</div>
                  <div className="text-lg">{day.getDate()}</div>
                </div>
                <div className="p-1 space-y-1">
                  {dayEvents.map(event => (
                    <div
                      key={event.id}
                      className={cn(
                        "p-1 rounded-none text-xs border-l-2 cursor-pointer hover:shadow-none border border-border font-mono",
                        event.category === 'work' && "bg-blue-500/20 border-l-blue-500",
                        event.category === 'personal' && "bg-green-500/20 border-l-green-500",
                        event.category === 'important' && "bg-red-500/20 border-l-red-500",
                        event.category === 'social' && "bg-purple-500/20 border-l-purple-500"
                      )}
                      onClick={() => onEventAction('open', event)}
                    >
                      <div className="font-medium truncate">{event.title}</div>
                      <div className="text-foreground">{formatTime(event.start)}</div>
                    </div>
                  ))}
                </div>
              </div>
            );
          })}
        </div>
      </div>
    );
  }

  // Month view
  const monthStart = new Date(currentDate.getFullYear(), currentDate.getMonth(), 1);
  const monthEnd = new Date(currentDate.getFullYear(), currentDate.getMonth() + 1, 0);
  const calendarStart = new Date(monthStart);
  calendarStart.setDate(calendarStart.getDate() - monthStart.getDay());

  const calendarDays = Array.from({ length: 42 }, (_, i) => {
    const day = new Date(calendarStart);
    day.setDate(calendarStart.getDate() + i);
    return day;
  });

  return (
    <div className="flex flex-col h-full bg-background">
      <div className="p-4 bg-card border-b border-border">
        <h2 className="text-lg font-semibold text-foreground font-mono">
          {currentDate.toLocaleDateString('en-US', { month: 'long', year: 'numeric' })}
        </h2>
      </div>
      <div className="flex-1 grid grid-cols-7 gap-1 p-2">
        {['Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday'].map(day => (
          <div key={day} className="p-2 text-center text-sm font-medium text-foreground bg-secondary border border-border font-mono">
            {day.substring(0, 3)}
          </div>
        ))}
        {calendarDays.map((day, index) => {
          const dayEvents = filteredEvents.filter(event =>
            new Date(event.start).toDateString() === day.toDateString()
          );
          const isToday = day.toDateString() === new Date().toDateString();
          const isCurrentMonth = day.getMonth() === currentDate.getMonth();

          return (
            <div key={index} className={cn(
              "border border-border bg-card min-h-[100px] p-1",
              !isCurrentMonth && "bg-secondary"
            )}>
              <div className={cn(
                "text-sm font-medium mb-1 font-mono",
                isToday ? "bg-primary text-primary-foreground rounded-none px-1" : "text-foreground",
                !isCurrentMonth && "text-muted-foreground"
              )}>
                {day.getDate()}
              </div>
              <div className="space-y-1">
                {dayEvents.slice(0, 3).map(event => (
                  <div
                    key={event.id}
                    className={cn(
                      "p-1 rounded-none text-xs border-l-2 cursor-pointer border border-border font-mono",
                      event.category === 'work' && "bg-blue-500/20 border-l-blue-500",
                      event.category === 'personal' && "bg-green-500/20 border-l-green-500",
                      event.category === 'important' && "bg-red-500/20 border-l-red-500",
                      event.category === 'social' && "bg-purple-500/20 border-l-purple-500"
                    )}
                    onClick={() => onEventAction('open', event)}
                  >
                    <div className="truncate font-medium">{event.title}</div>
                  </div>
                ))}
                {dayEvents.length > 3 && (
                  <div className="text-xs text-foreground text-center font-mono">
                    +{dayEvents.length - 3} more
                  </div>
                )}
              </div>
            </div>
          );
        })}
      </div>
    </div>
  );
};

const EventDetails = ({ event }) => {
  if (!event) {
    return (
      <div className="flex flex-col items-center justify-center h-full text-center text-foreground bg-background font-mono">
        <Calendar className="w-12 h-12 mb-4 text-muted-foreground" />
        <div className="text-lg font-medium">No event selected</div>
        <div className="text-sm">Select an event to view details</div>
      </div>
    );
  }

  return (
    <div className="flex flex-col h-full bg-background border-l border-border">
      {/* Header */}
      <div className="p-4 border-b border-border bg-card">
        <div className="flex items-center justify-between mb-2">
          <h3 className="text-lg font-semibold text-foreground font-mono">{event.title}</h3>
          <DropdownMenu>
            <DropdownMenuTrigger asChild>
              <Button variant="ghost" size="icon" className="bg-secondary hover:bg-secondary/80">
                <MoreHorizontal className="h-4 w-4" />
              </Button>
            </DropdownMenuTrigger>
            <DropdownMenuContent align="end" className="bg-popover text-popover-foreground border-border font-mono">
              <DropdownMenuItem className="hover:bg-primary hover:text-primary-foreground">
                <Edit3 className="h-4 w-4 mr-2" />
                Edit
              </DropdownMenuItem>
              <DropdownMenuItem className="hover:bg-primary hover:text-primary-foreground">
                <Forward className="h-4 w-4 mr-2" />
                Forward
              </DropdownMenuItem>
              <DropdownMenuItem className="hover:bg-primary hover:text-primary-foreground">
                <Reply className="h-4 w-4 mr-2" />
                Reply
              </DropdownMenuItem>
              <DropdownMenuSeparator className="border-t border-border" />
              <DropdownMenuItem className="text-destructive hover:bg-primary hover:text-primary-foreground">
                <Trash2 className="h-4 w-4 mr-2" />
                Delete
              </DropdownMenuItem>
            </DropdownMenuContent>
          </DropdownMenu>
        </div>
        <Badge variant="outline" className={cn(
          "rounded-none border border-border font-mono",
          event.category === 'work' && "border-blue-500 text-foreground",
          event.category === 'personal' && "border-green-500 text-foreground",
          event.category === 'important' && "border-red-500 text-foreground",
          event.category === 'social' && "border-purple-500 text-foreground"
        )}>
          {event.category}
        </Badge>
      </div>

      {/* Content */}
      <ScrollArea className="flex-1">
        <div className="p-4 space-y-4 font-mono">
          {/* Time */}
          <div className="flex items-center gap-2">
            <Clock className="h-4 w-4 text-foreground" />
            <div>
              <div className="font-medium">
                {formatTime(event.start)} - {formatTime(event.end)}
              </div>
              <div className="text-sm text-foreground">
                {new Date(event.start).toLocaleDateString('en-US', {
                  weekday: 'long',
                  month: 'long',
                  day: 'numeric',
                  year: 'numeric'
                })}
              </div>
            </div>
          </div>

          {/* Location */}
          {event.location && (
            <div className="flex items-center gap-2">
              <MapPin className="h-4 w-4 text-foreground" />
              <span className="text-foreground">{event.location}</span>
            </div>
          )}

          {/* Organizer */}
          <div className="flex items-center gap-2">
            <User className="h-4 w-4 text-foreground" />
            <div>
              <div className="font-medium text-foreground">Organizer</div>
              <div className="text-sm text-foreground">{event.organizer}</div>
            </div>
          </div>

          {/* Attendees */}
          {event.attendees.length > 0 && (
            <div className="flex items-start gap-2">
              <Users className="h-4 w-4 text-foreground mt-1" />
              <div className="flex-1">
                <div className="font-medium mb-1 text-foreground">Attendees ({event.attendees.length})</div>
                <div className="space-y-1">
                  {event.attendees.map((attendee, index) => (
                    <div key={index} className="text-sm text-foreground flex items-center gap-2">
                      <div className="w-2 h-2 bg-green-500 rounded-none"></div>
                      {attendee}
                    </div>
                  ))}
                </div>
              </div>
            </div>
          )}

          {/* Description */}
          {event.description && (
            <div>
              <div className="font-medium mb-2 text-foreground">Description</div>
              <div className="text-sm text-foreground leading-relaxed">
                {event.description}
              </div>
            </div>
          )}

          {/* Properties */}
          <div className="space-y-2">
            <div className="flex items-center justify-between">
              <span className="text-sm font-medium text-foreground">Priority</span>
              <Badge variant={event.priority === 'high' ? 'destructive' : 'secondary'} className="rounded-none border border-border font-mono">
                {event.priority}
              </Badge>
            </div>
            <div className="flex items-center justify-between">
              <span className="text-sm font-medium text-foreground">Status</span>
              <Badge variant={
                event.status === 'accepted' ? 'default' :
                  event.status === 'tentative' ? 'secondary' : 'destructive'
              } className="rounded-none border border-border font-mono">
                {event.status}
              </Badge>
            </div>
            <div className="flex items-center justify-between">
              <span className="text-sm font-medium text-foreground">Recurring</span>
              <Badge variant={event.recurring ? 'default' : 'secondary'} className="rounded-none border border-border font-mono">
                {event.recurring ? 'Yes' : 'No'}
              </Badge>
            </div>
          </div>
        </div>
      </ScrollArea>

      {/* Footer */}
      <div className="p-4 border-t border-border flex justify-end gap-2">
        <Button variant="outline" size="sm" className="rounded-none border border-border font-mono">
          <X className="h-4 w-4 mr-2" />
          Decline
        </Button>
        <Button variant="outline" size="sm" className="rounded-none border border-border font-mono">
          <Clock className="h-4 w-4 mr-2" />
          Tentative
        </Button>
        <Button size="sm" className="rounded-none border border-border bg-primary text-primary-foreground font-mono hover:bg-primary/90">
          <CheckCircle2 className="h-4 w-4 mr-2" />
          Accept
        </Button>
      </div>
    </div>
  );
};

const CalendarPage = () => {
  const [currentDate, setCurrentDate] = useState(new Date());
  const [selectedEvent, setSelectedEvent] = useState(null);
  const [categories, setCategories] = useState(categoriesData);
  const [sidebarCollapsed, setSidebarCollapsed] = useState(false);

  const handleEventAction = (action, event) => {
    switch (action) {
      case 'open':
        setSelectedEvent(event);
        break;
      case 'edit':
        // Handle edit
        break;
      case 'delete':
        // Handle delete
        break;
      default:
        break;
    }
  };

  const handleCategoryToggle = (categoryName) => {
    setCategories(categories.map(cat =>
      cat.name === categoryName ? { ...cat, visible: !cat.visible } : cat
    ));
  };

  const handleDateSelect = (date) => {
    setCurrentDate(date);
  };

  const shortcuts = [
    // Calendar actions row (unique qkeys)
    [
      { key: 'Q', label: 'New Event', action: () => console.log('New Event') },
      { key: 'W', label: 'New Meeting', action: () => console.log('New Meeting') },
      { key: 'E', label: 'Edit Event', action: () => console.log('Edit Event') },
      { key: 'R', label: 'Refresh', action: () => console.log('Refresh') },
      { key: 'T', label: 'Today', action: () => setCurrentDate(new Date()) },
      { key: 'Y', label: 'Delete Event', action: () => console.log('Delete Event') },
      { key: 'U', label: 'Duplicate', action: () => console.log('Duplicate Event') },
      { key: 'I', label: 'Invite', action: () => console.log('Invite Attendees') },
      { key: 'O', label: 'Open Event', action: () => console.log('Open Event') },
      { key: 'P', label: 'Print', action: () => console.log('Print Calendar') },
    ],
    // Navigation/info row (unique qkeys)
    [
      { key: 'A', label: 'Accept', action: () => console.log('Accept Invitation') },
      { key: 'S', label: 'Send', action: () => console.log('Send Invitation') },
      { key: 'D', label: 'Decline', action: () => console.log('Decline Invitation') },
      { key: 'G', label: 'Go to Date', action: () => console.log('Go to Date') },
      { key: 'H', label: 'Help', action: () => console.log('Help') },
      { key: 'J', label: 'Share', action: () => console.log('Share Calendar') },
      { key: 'K', label: 'Show/Hide Weekends', action: () => console.log('Toggle Weekends') },
      { key: 'L', label: 'List View', action: () => console.log('List View') },
      { key: 'Z', label: 'Month View', action: () => console.log('Month View') },
      { key: 'X', label: 'Week View', action: () => console.log('Week View') },
    ]
  ];

  return (
    <div className="flex flex-col h-[calc(100vh-50px)]">
      <div className="flex h-screen bg-background font-mono">
        {/* Sidebar */}
        <CalendarSidebar
          isCollapsed={sidebarCollapsed}
          categories={categories}
          onCategoryToggle={handleCategoryToggle}
          currentDate={currentDate}
          onDateSelect={handleDateSelect}
        />

        {/* Main Content */}
        <div className="flex-1 flex flex-col">
          {/* Toolbar */}
          <div className="p-2 border-b border-border flex items-center justify-between bg-card">
            <div className="flex items-center gap-2">
              <Button
                variant="ghost"
                size="icon"
                onClick={() => setSidebarCollapsed(!sidebarCollapsed)}
                className="bg-secondary hover:bg-secondary/80"
              >
                {sidebarCollapsed ? (
                  <ChevronRight className="h-4 w-4" />
                ) : (
                  <ChevronLeft className="h-4 w-4" />
                )}
              </Button>
              <Button
                variant="ghost"
                size="sm"
                onClick={() => setCurrentDate(new Date())}
                className="bg-secondary hover:bg-secondary/80 font-mono"
              >
                Today
              </Button>
              <div className="flex items-center gap-1">
                <Button
                  variant="ghost"
                  size="icon"
                  onClick={() => {
                    const newDate = new Date(currentDate);
                    newDate.setDate(currentDate.getDate() - 1);
                    setCurrentDate(newDate);
                  }}
                  className="bg-secondary hover:bg-secondary/80"
                >
                  <ChevronLeft className="h-4 w-4" />
                </Button>
                <Button
                  variant="ghost"
                  size="icon"
                  onClick={() => {
                    const newDate = new Date(currentDate);
                    newDate.setDate(currentDate.getDate() + 1);
                    setCurrentDate(newDate);
                  }}
                  className="bg-secondary hover:bg-secondary/80"
                >
                  <ChevronRight className="h-4 w-4" />
                </Button>
              </div>
              <div className="text-sm font-medium ml-2 text-foreground font-mono">
                {formatDate(currentDate)}
              </div>
            </div>
            <div className="flex items-center gap-2">
              <DropdownMenu>
                <DropdownMenuTrigger asChild>
                  <Button variant="outline" size="sm" className="bg-secondary hover:bg-secondary/80 border-border rounded-none font-mono">
                    <Settings className="h-4 w-4 mr-2" />
                    Settings
                  </Button>
                </DropdownMenuTrigger>
                <DropdownMenuContent align="end" className="bg-popover text-popover-foreground border-border font-mono">
                  <DropdownMenuItem className="hover:bg-primary hover:text-primary-foreground">
                    <RefreshCw className="h-4 w-4 mr-2" />
                    Refresh
                  </DropdownMenuItem>
                  <DropdownMenuItem className="hover:bg-primary hover:text-primary-foreground">
                    <Filter className="h-4 w-4 mr-2" />
                    Filters
                  </DropdownMenuItem>
                  <DropdownMenuSeparator className="border-t border-border" />
                  <DropdownMenuItem className="hover:bg-primary hover:text-primary-foreground">
                    <Print className="h-4 w-4 mr-2" />
                    Print
                  </DropdownMenuItem>
                  <DropdownMenuItem className="hover:bg-primary hover:text-primary-foreground">
                    <Share2 className="h-4 w-4 mr-2" />
                    Share
                  </DropdownMenuItem>
                </DropdownMenuContent>
              </DropdownMenu>
            </div>
          </div>

          {/* Calendar Area */}
          <div className="flex-1 flex">
            {/* Three calendar views on the left */}
            <div className="w-[60%] flex flex-col border-r border-border">
              <div className="h-1/3 border-b border-border">
                <CalendarView
                  view="day"
                  events={sampleEvents}
                  currentDate={currentDate}
                  onEventAction={handleEventAction}
                />
              </div>
              <div className="h-1/3 border-b border-border">
                <CalendarView
                  view="week"
                  events={sampleEvents}
                  currentDate={currentDate}
                  onEventAction={handleEventAction}
                />
              </div>
              <div className="h-1/3">
                <CalendarView
                  view="month"
                  events={sampleEvents}
                  currentDate={currentDate}
                  onEventAction={handleEventAction}
                />
              </div>
            </div>

            {/* Event details on the right */}
            <div className="w-[40%]">
              <EventDetails event={selectedEvent} />
            </div>
          </div>
        </div>
      </div>
      <Footer shortcuts={shortcuts} />
    </div>
  );
};

export default CalendarPage;