'use client';

import { Shield, BookOpen, Heart, Brain, Sparkles } from 'lucide-react';

interface ThinkingIndicatorProps {
  activeAgent?: string;
  stage?: 'routing' | 'thinking' | 'responding';
}

const agentConfig: Record<string, { icon: typeof Shield; color: string; label: string; description: string }> = {
  Gatekeeper: {
    icon: Shield,
    color: 'purple',
    label: 'Gatekeeper',
    description: 'Analyzing your intent...',
  },
  Theologian: {
    icon: BookOpen,
    color: 'blue',
    label: 'Theologian',
    description: 'Consulting Scripture...',
  },
  Healer: {
    icon: Heart,
    color: 'rose',
    label: 'Healer',
    description: 'Preparing pastoral care...',
  },
  Orchestrator: {
    icon: Brain,
    color: 'amber',
    label: 'Orchestrator',
    description: 'Coordinating response...',
  },
  System: {
    icon: Sparkles,
    color: 'neutral',
    label: 'System',
    description: 'Processing...',
  },
};

const colorClasses: Record<string, { bg: string; border: string; text: string; glow: string; pulse: string }> = {
  purple: {
    bg: 'bg-purple-500/20',
    border: 'border-purple-500/40',
    text: 'text-purple-400',
    glow: 'shadow-[0_0_20px_rgba(168,85,247,0.4)]',
    pulse: 'bg-purple-400',
  },
  blue: {
    bg: 'bg-blue-500/20',
    border: 'border-blue-500/40',
    text: 'text-blue-400',
    glow: 'shadow-[0_0_20px_rgba(59,130,246,0.4)]',
    pulse: 'bg-blue-400',
  },
  rose: {
    bg: 'bg-rose-500/20',
    border: 'border-rose-500/40',
    text: 'text-rose-400',
    glow: 'shadow-[0_0_20px_rgba(244,63,94,0.4)]',
    pulse: 'bg-rose-400',
  },
  amber: {
    bg: 'bg-amber-500/20',
    border: 'border-amber-500/40',
    text: 'text-amber-400',
    glow: 'shadow-[0_0_20px_rgba(245,158,11,0.4)]',
    pulse: 'bg-amber-400',
  },
  neutral: {
    bg: 'bg-neutral-500/20',
    border: 'border-neutral-500/40',
    text: 'text-neutral-400',
    glow: 'shadow-[0_0_20px_rgba(163,163,163,0.4)]',
    pulse: 'bg-neutral-400',
  },
};

export default function ThinkingIndicator({ activeAgent = 'Gatekeeper', stage = 'thinking' }: ThinkingIndicatorProps) {
  const agent = agentConfig[activeAgent] || agentConfig.System;
  const colors = colorClasses[agent.color] || colorClasses.neutral;
  const Icon = agent.icon;

  return (
    <div className="flex gap-3 items-start animate-fade-in">
      {/* Agent Icon with Pulsing Rings */}
      <div className="relative">
        <div className={`w-8 h-8 rounded-full ${colors.bg} flex items-center justify-center border ${colors.border} ${colors.glow} transition-all duration-500`}>
          <Icon className={`w-4 h-4 ${colors.text}`} />
        </div>
        {/* Sonar rings */}
        <div className="absolute inset-0 rounded-full animate-ping-slow opacity-30">
          <div className={`w-full h-full rounded-full ${colors.bg} border ${colors.border}`} />
        </div>
        <div className="absolute inset-0 rounded-full animate-ping-slower opacity-20" style={{ animationDelay: '0.5s' }}>
          <div className={`w-full h-full rounded-full ${colors.bg} border ${colors.border}`} />
        </div>
      </div>

      {/* Thinking Content */}
      <div className={`flex-1 rounded-2xl rounded-tl-sm p-4 ${colors.bg} border ${colors.border} backdrop-blur-sm`}>
        {/* Agent Badge */}
        <div className="flex items-center gap-2 mb-2">
          <span className={`text-[10px] font-mono uppercase tracking-wider ${colors.text}`}>
            {agent.label}
          </span>
          <div className="flex items-center gap-1">
            <span className={`w-1.5 h-1.5 rounded-full ${colors.pulse} animate-pulse`} />
            <span className="text-[10px] text-neutral-500">
              {stage === 'routing' ? 'Routing' : stage === 'responding' ? 'Generating' : 'Thinking'}
            </span>
          </div>
        </div>

        {/* Animated Thinking Dots */}
        <div className="flex items-center gap-3">
          <div className="flex items-center gap-1.5">
            <span className={`w-2 h-2 ${colors.pulse} rounded-full animate-bounce`} style={{ animationDelay: '0ms' }} />
            <span className={`w-2 h-2 ${colors.pulse} rounded-full animate-bounce`} style={{ animationDelay: '150ms' }} />
            <span className={`w-2 h-2 ${colors.pulse} rounded-full animate-bounce`} style={{ animationDelay: '300ms' }} />
          </div>
          <span className="text-sm text-neutral-400 italic">{agent.description}</span>
        </div>

        {/* Swarm Activity Indicator */}
        <div className="mt-3 pt-3 border-t border-white/5">
          <div className="flex items-center gap-2">
            <span className="text-[9px] text-neutral-600 uppercase tracking-wider">Swarm Activity</span>
            <div className="flex-1 h-1 bg-white/5 rounded-full overflow-hidden">
              <div
                className={`h-full ${colors.pulse} opacity-60 rounded-full animate-pulse`}
                style={{ width: '60%' }}
              />
            </div>
          </div>
          <div className="flex gap-1.5 mt-2">
            {Object.entries(agentConfig).slice(0, 4).map(([name, config]) => {
              const isActive = name === activeAgent;
              const agentColors = colorClasses[config.color];
              return (
                <div
                  key={name}
                  className={`flex items-center gap-1 px-1.5 py-0.5 rounded text-[8px] transition-all duration-300 ${
                    isActive
                      ? `${agentColors.bg} ${agentColors.border} border ${agentColors.text}`
                      : 'bg-white/5 text-neutral-600'
                  }`}
                >
                  <config.icon className="w-2.5 h-2.5" />
                  <span className="hidden sm:inline">{name.slice(0, 4)}</span>
                </div>
              );
            })}
          </div>
        </div>
      </div>
    </div>
  );
}