'use client';

import React from 'react';
import { AlertTriangle, Wifi, WifiOff, Loader2 } from 'lucide-react';
import { cn } from '@/lib/utils';
import {
  Tooltip,
  TooltipContent,
  TooltipProvider,
  TooltipTrigger,
} from '@/components/ui/tooltip';

type ConnectionStatus = 'connected' | 'connecting' | 'error' | 'idle';

interface StatusIndicatorProps {
  /** Current connection status */
  status: ConnectionStatus;
  /** Whether MCP (Model Context Protocol) is connected */
  mcpConnected?: boolean;
  /** Optional custom label to display */
  label?: string;
}

/**
 * Status configuration for each connection state
 */
const STATUS_CONFIG: Record<
  ConnectionStatus,
  {
    color: string;
    bgColor: string;
    pulseColor?: string;
    text: string;
    icon: React.ReactNode;
  }
> = {
  connected: {
    color: 'bg-green-500',
    bgColor: 'bg-green-100',
    pulseColor: 'bg-green-400',
    text: 'Connected',
    icon: <Wifi className="w-3.5 h-3.5 text-green-600" />,
  },
  connecting: {
    color: 'bg-yellow-500',
    bgColor: 'bg-yellow-100',
    pulseColor: 'bg-yellow-400',
    text: 'Connecting...',
    icon: <Loader2 className="w-3.5 h-3.5 text-yellow-600 animate-spin" />,
  },
  error: {
    color: 'bg-red-500',
    bgColor: 'bg-red-100',
    text: 'Connection Error',
    icon: <WifiOff className="w-3.5 h-3.5 text-red-600" />,
  },
  idle: {
    color: 'bg-gray-400',
    bgColor: 'bg-gray-100',
    text: 'Idle',
    icon: <Wifi className="w-3.5 h-3.5 text-gray-500" />,
  },
};

/**
 * StatusIndicator - Shows connection status for the Control Center
 *
 * Displays a colored dot indicator with tooltip showing detailed status.
 * Also shows warning if MCP is not connected.
 */
export const StatusIndicator: React.FC<StatusIndicatorProps> = ({
  status,
  mcpConnected = true,
  label,
}) => {
  const config = STATUS_CONFIG[status];
  const showMcpWarning = !mcpConnected;

  return (
    <TooltipProvider>
      <div className="flex items-center gap-2">
        {/* Main status indicator */}
        <Tooltip>
          <TooltipTrigger asChild>
            <div
              className={cn(
                'flex items-center gap-2',
                'px-3 py-1.5',
                'bg-[#F0F4F8]',
                'rounded-full',
                'shadow-[3px_3px_6px_#c5c9d1,-3px_-3px_6px_#ffffff]',
                'cursor-default',
                'transition-all duration-200'
              )}
            >
              {/* Status dot with pulse animation for active states */}
              <div className="relative flex items-center justify-center">
                <span
                  className={cn(
                    'w-2.5 h-2.5',
                    'rounded-full',
                    config.color,
                    'relative z-10'
                  )}
                />
                {config.pulseColor && (
                  <span
                    className={cn(
                      'absolute',
                      'w-2.5 h-2.5',
                      'rounded-full',
                      config.pulseColor,
                      'animate-ping',
                      'opacity-75'
                    )}
                  />
                )}
              </div>

              {/* Status text/label */}
              <span className="text-xs font-medium text-gray-600">
                {label || config.text}
              </span>
            </div>
          </TooltipTrigger>
          <TooltipContent side="bottom" className="text-xs">
            <div className="flex items-center gap-2">
              {config.icon}
              <span>{config.text}</span>
            </div>
          </TooltipContent>
        </Tooltip>

        {/* MCP Warning indicator */}
        {showMcpWarning && (
          <Tooltip>
            <TooltipTrigger asChild>
              <div
                className={cn(
                  'flex items-center gap-1.5',
                  'px-2.5 py-1.5',
                  'bg-amber-50',
                  'border border-amber-200',
                  'rounded-full',
                  'cursor-default',
                  'transition-all duration-200'
                )}
              >
                <AlertTriangle className="w-3.5 h-3.5 text-amber-600" />
                <span className="text-xs font-medium text-amber-700">
                  Limited
                </span>
              </div>
            </TooltipTrigger>
            <TooltipContent side="bottom" className="max-w-[200px] text-xs">
              <div className="flex flex-col gap-1">
                <span className="font-medium text-amber-700">
                  MCP Not Connected
                </span>
                <span className="text-gray-600">
                  Some features may be unavailable. Tool execution will be limited.
                </span>
              </div>
            </TooltipContent>
          </Tooltip>
        )}
      </div>
    </TooltipProvider>
  );
};

/**
 * Compact version of StatusIndicator - just shows the dot
 */
export const StatusDot: React.FC<{
  status: ConnectionStatus;
  className?: string;
}> = ({ status, className }) => {
  const config = STATUS_CONFIG[status];

  return (
    <TooltipProvider>
      <Tooltip>
        <TooltipTrigger asChild>
          <div
            className={cn(
              'relative flex items-center justify-center',
              'w-4 h-4',
              className
            )}
          >
            <span
              className={cn(
                'w-2.5 h-2.5',
                'rounded-full',
                config.color,
                'relative z-10'
              )}
            />
            {config.pulseColor && (
              <span
                className={cn(
                  'absolute',
                  'w-2.5 h-2.5',
                  'rounded-full',
                  config.pulseColor,
                  'animate-ping',
                  'opacity-75'
                )}
              />
            )}
          </div>
        </TooltipTrigger>
        <TooltipContent side="right" className="text-xs">
          <div className="flex items-center gap-2">
            {config.icon}
            <span>{config.text}</span>
          </div>
        </TooltipContent>
      </Tooltip>
    </TooltipProvider>
  );
};

export default StatusIndicator;