"use client"
import React, { useState } from 'react'

const layouts = (process.env.NEXT_PUBLIC_TRADINGVIEW_LAYOUTS || 'ai,Diy module').split(',').map(l => l.trim())
const timeframes = [
  { label: '1m', value: '1' },
  { label: '5m', value: '5' },
  { label: '15m', value: '15' },
  { label: '1h', value: '60' },
  { label: '4h', value: '240' },
  { label: '1d', value: 'D' },
  { label: '1w', value: 'W' },
  { label: '1M', value: 'M' },
]

const popularCoins = [
  { name: 'Bitcoin', symbol: 'BTCUSD', icon: '₿', color: 'from-orange-400 to-orange-600' },
  { name: 'Ethereum', symbol: 'ETHUSD', icon: 'Ξ', color: 'from-blue-400 to-blue-600' },
  { name: 'Solana', symbol: 'SOLUSD', icon: '◎', color: 'from-purple-400 to-purple-600' },
  { name: 'Sui', symbol: 'SUIUSD', icon: '🔷', color: 'from-cyan-400 to-cyan-600' },
  { name: 'Avalanche', symbol: 'AVAXUSD', icon: '🔺', color: 'from-red-400 to-red-600' },
  { name: 'Cardano', symbol: 'ADAUSD', icon: '♠', color: 'from-indigo-400 to-indigo-600' },
  { name: 'Polygon', symbol: 'MATICUSD', icon: '🔷', color: 'from-violet-400 to-violet-600' },
  { name: 'Chainlink', symbol: 'LINKUSD', icon: '🔗', color: 'from-blue-400 to-blue-600' },
]

export default function AIAnalysisPanel() {
  const [symbol, setSymbol] = useState('BTCUSD')
  const [selectedLayouts, setSelectedLayouts] = useState<string[]>([layouts[0]])
  const [timeframe, setTimeframe] = useState('60')
  const [loading, setLoading] = useState(false)
  const [result, setResult] = useState<any>(null)
  const [error, setError] = useState<string | null>(null)

  // Helper function to safely render any value
  const safeRender = (value: any): string => {
    if (typeof value === 'string') return value
    if (typeof value === 'number') return value.toString()
    if (Array.isArray(value)) return value.join(', ')
    if (typeof value === 'object' && value !== null) {
      return JSON.stringify(value)
    }
    return String(value)
  }

  const toggleLayout = (layout: string) => {
    setSelectedLayouts(prev => 
      prev.includes(layout) 
        ? prev.filter(l => l !== layout)
        : [...prev, layout]
    )
  }

  const quickAnalyze = async (coinSymbol: string) => {
    setSymbol(coinSymbol)
    setSelectedLayouts([layouts[0]]) // Use first layout
    setLoading(true)
    setError(null)
    setResult(null)

    try {
      const res = await fetch('/api/analyze', {
        method: 'POST',
        headers: { 'Content-Type': 'application/json' },
        body: JSON.stringify({ symbol: coinSymbol, layouts: [layouts[0]], timeframe })
      })
      const data = await res.json()
      if (!res.ok) throw new Error(data.error || 'Unknown error')
      setResult(data)
    } catch (e: any) {
      setError(e.message)
    }
    setLoading(false)
  }

  async function handleAnalyze() {
    setLoading(true)
    setError(null)
    setResult(null)
    
    if (selectedLayouts.length === 0) {
      setError('Please select at least one layout')
      setLoading(false)
      return
    }

    try {
      const res = await fetch('/api/analyze', {
        method: 'POST',
        headers: { 'Content-Type': 'application/json' },
        body: JSON.stringify({ symbol, layouts: selectedLayouts, timeframe })
      })
      const data = await res.json()
      if (!res.ok) throw new Error(data.error || 'Unknown error')
      setResult(data)
    } catch (e: any) {
      setError(e.message)
    }
    setLoading(false)
  }

  return (
    <div className="card card-gradient">
      <div className="flex items-center justify-between mb-6">
        <h2 className="text-xl font-bold text-white flex items-center">
          <span className="w-8 h-8 bg-gradient-to-br from-cyan-400 to-blue-600 rounded-lg flex items-center justify-center mr-3">
            🤖
          </span>
          AI Chart Analysis
        </h2>
        <div className="flex items-center space-x-2 text-sm text-gray-400">
          <div className="w-2 h-2 bg-cyan-400 rounded-full animate-pulse"></div>
          <span>AI Powered</span>
        </div>
      </div>
      
      {/* Quick Coin Selection */}
      <div className="mb-8">
        <div className="flex items-center justify-between mb-4">
          <h3 className="text-sm font-semibold text-gray-300 flex items-center">
            <span className="w-4 h-4 bg-yellow-500 rounded-full mr-2"></span>
            Quick Analysis
          </h3>
          <span className="text-xs text-gray-500">Click any coin for instant analysis</span>
        </div>
        <div className="grid grid-cols-2 md:grid-cols-4 gap-3">
          {popularCoins.map(coin => (
            <button
              key={coin.symbol}
              onClick={() => quickAnalyze(coin.symbol)}
              disabled={loading}
              className={`group relative p-4 rounded-xl border transition-all duration-300 ${
                symbol === coin.symbol
                  ? 'border-cyan-500 bg-cyan-500/10 shadow-lg shadow-cyan-500/20'
                  : 'border-gray-700 bg-gray-800/50 hover:border-gray-600 hover:bg-gray-800'
              } ${loading ? 'opacity-50 cursor-not-allowed' : 'hover:scale-105 hover:shadow-lg'}`}
            >
              <div className={`w-10 h-10 bg-gradient-to-br ${coin.color} rounded-lg flex items-center justify-center mb-3 mx-auto text-white font-bold`}>
                {coin.icon}
              </div>
              <div className="text-xs font-semibold text-white">{coin.name}</div>
              <div className="text-xs text-gray-400 mt-1">{coin.symbol}</div>
              {symbol === coin.symbol && (
                <div className="absolute top-2 right-2 w-2 h-2 bg-cyan-400 rounded-full animate-pulse"></div>
              )}
            </button>
          ))}
        </div>
      </div>

      {/* Advanced Controls */}
      <div className="border-t border-gray-700 pt-6">
        <h3 className="text-sm font-semibold text-gray-300 mb-4 flex items-center">
          <span className="w-4 h-4 bg-purple-500 rounded-full mr-2"></span>
          Advanced Analysis
        </h3>
        
        {/* Symbol and Timeframe */}
        <div className="grid grid-cols-1 md:grid-cols-3 gap-4 mb-6">
          <div className="md:col-span-2">
            <label className="block text-xs font-medium text-gray-400 mb-2">Trading Pair</label>
            <input
              className="w-full px-4 py-3 bg-gray-800/50 border border-gray-700 rounded-lg text-white placeholder-gray-500 focus:border-cyan-500 focus:outline-none focus:ring-2 focus:ring-cyan-500/20 transition-all"
              value={symbol}
              onChange={e => setSymbol(e.target.value.toUpperCase())}
              placeholder="e.g., BTCUSD, ETHUSD"
            />
          </div>
          <div>
            <label className="block text-xs font-medium text-gray-400 mb-2">Timeframe</label>
            <select
              className="w-full px-4 py-3 bg-gray-800/50 border border-gray-700 rounded-lg text-white focus:border-cyan-500 focus:outline-none focus:ring-2 focus:ring-cyan-500/20 transition-all"
              value={timeframe}
              onChange={e => setTimeframe(e.target.value)}
            >
              {timeframes.map(tf => (
                <option key={tf.value} value={tf.value} className="bg-gray-800">
                  {tf.label}
                </option>
              ))}
            </select>
          </div>
        </div>
        
        {/* Layout Selection */}
        <div className="mb-6">
          <label className="block text-xs font-medium text-gray-400 mb-3">Analysis Layouts</label>
          <div className="grid grid-cols-1 md:grid-cols-2 gap-3">
            {layouts.map(layout => (
              <label key={layout} className="group relative">
                <input
                  type="checkbox"
                  checked={selectedLayouts.includes(layout)}
                  onChange={() => toggleLayout(layout)}
                  className="sr-only"
                />
                <div className={`flex items-center p-3 rounded-lg border cursor-pointer transition-all ${
                  selectedLayouts.includes(layout)
                    ? 'border-cyan-500 bg-cyan-500/10 text-cyan-300'
                    : 'border-gray-700 bg-gray-800/30 text-gray-300 hover:border-gray-600 hover:bg-gray-800/50'
                }`}>
                  <div className={`w-4 h-4 rounded border-2 mr-3 flex items-center justify-center ${
                    selectedLayouts.includes(layout)
                      ? 'border-cyan-500 bg-cyan-500'
                      : 'border-gray-600'
                  }`}>
                    {selectedLayouts.includes(layout) && (
                      <svg className="w-2 h-2 text-white" fill="currentColor" viewBox="0 0 20 20">
                        <path fillRule="evenodd" d="M16.707 5.293a1 1 0 010 1.414l-8 8a1 1 0 01-1.414 0l-4-4a1 1 0 011.414-1.414L8 12.586l7.293-7.293a1 1 0 011.414 0z" clipRule="evenodd" />
                      </svg>
                    )}
                  </div>
                  <span className="text-sm font-medium">{layout}</span>
                </div>
              </label>
            ))}
          </div>
          {selectedLayouts.length > 0 && (
            <div className="mt-3 p-3 bg-gray-800/30 rounded-lg">
              <div className="text-xs text-gray-400">
                Selected layouts: <span className="text-cyan-400">{selectedLayouts.join(', ')}</span>
              </div>
            </div>
          )}
        </div>
        
        {/* Analyze Button */}
        <button 
          className={`w-full py-3 px-6 rounded-lg font-semibold transition-all duration-300 ${
            loading
              ? 'bg-gray-700 text-gray-400 cursor-not-allowed'
              : 'btn-primary transform hover:scale-[1.02] active:scale-[0.98]'
          }`}
          onClick={handleAnalyze} 
          disabled={loading}
        >
          {loading ? (
            <div className="flex items-center justify-center space-x-2">
              <div className="spinner"></div>
              <span>Analyzing Chart...</span>
            </div>
          ) : (
            <div className="flex items-center justify-center space-x-2">
              <span>🚀</span>
              <span>Start AI Analysis</span>
            </div>
          )}
        </button>
      </div>

      {/* Results Section */}
      {error && (
        <div className="mt-6 p-4 bg-red-500/10 border border-red-500/30 rounded-lg">
          <div className="flex items-start space-x-3">
            <div className="w-5 h-5 text-red-400 mt-0.5">⚠️</div>
            <div>
              <h4 className="text-red-400 font-medium text-sm">Analysis Error</h4>
              <p className="text-red-300 text-xs mt-1 opacity-90">{error}</p>
            </div>
          </div>
        </div>
      )}

      {loading && (
        <div className="mt-6 p-4 bg-cyan-500/10 border border-cyan-500/30 rounded-lg">
          <div className="flex items-center space-x-3">
            <div className="spinner border-cyan-500"></div>
            <div>
              <h4 className="text-cyan-400 font-medium text-sm">AI Processing</h4>
              <p className="text-cyan-300 text-xs mt-1 opacity-90">
                Analyzing {symbol} on {timeframe} timeframe...
              </p>
            </div>
          </div>
        </div>
      )}

      {result && (
        <div className="mt-6 space-y-4">
          <div className="flex items-center justify-between">
            <h3 className="text-lg font-bold text-white flex items-center">
              <span className="w-6 h-6 bg-gradient-to-br from-green-400 to-emerald-600 rounded-lg flex items-center justify-center mr-2 text-sm">
                ✅
              </span>
              Analysis Complete
            </h3>
            {result.layoutsAnalyzed && (
              <div className="text-xs text-gray-400">
                Layouts: {result.layoutsAnalyzed.join(', ')}
              </div>
            )}
          </div>

          <div className="grid gap-4">
            {/* Summary */}
            <div className="p-4 bg-gradient-to-r from-gray-800/50 to-gray-700/50 rounded-lg border border-gray-700">
              <h4 className="text-sm font-semibold text-gray-300 mb-2 flex items-center">
                <span className="w-4 h-4 bg-blue-500 rounded-full mr-2"></span>
                Market Summary
              </h4>
              <p className="text-white text-sm leading-relaxed">{safeRender(result.summary)}</p>
            </div>

            {/* Key Metrics */}
            <div className="grid grid-cols-1 md:grid-cols-2 gap-4">
              <div className="p-4 bg-gradient-to-br from-green-500/10 to-emerald-500/10 border border-green-500/30 rounded-lg">
                <h4 className="text-sm font-semibold text-green-400 mb-2">Market Sentiment</h4>
                <p className="text-white font-medium">{safeRender(result.marketSentiment)}</p>
              </div>
              
              <div className="p-4 bg-gradient-to-br from-blue-500/10 to-cyan-500/10 border border-blue-500/30 rounded-lg">
                <h4 className="text-sm font-semibold text-blue-400 mb-2">Recommendation</h4>
                <p className="text-white font-medium">{safeRender(result.recommendation)}</p>
                {result.confidence && (
                  <p className="text-cyan-300 text-xs mt-1">{safeRender(result.confidence)}% confidence</p>
                )}
              </div>
            </div>

            {/* Trading Levels */}
            {result.keyLevels && (
              <div className="grid grid-cols-1 md:grid-cols-2 gap-4">
                <div className="p-4 bg-gradient-to-br from-red-500/10 to-rose-500/10 border border-red-500/30 rounded-lg">
                  <h4 className="text-sm font-semibold text-red-400 mb-2">Resistance Levels</h4>
                  <p className="text-red-300 font-mono text-sm">
                    {result.keyLevels.resistance?.join(', ') || 'None identified'}
                  </p>
                </div>
                
                <div className="p-4 bg-gradient-to-br from-green-500/10 to-emerald-500/10 border border-green-500/30 rounded-lg">
                  <h4 className="text-sm font-semibold text-green-400 mb-2">Support Levels</h4>
                  <p className="text-green-300 font-mono text-sm">
                    {result.keyLevels.support?.join(', ') || 'None identified'}
                  </p>
                </div>
              </div>
            )}

            {/* Trading Setup */}
            {(result.entry || result.stopLoss || result.takeProfits) && (
              <div className="p-4 bg-gradient-to-br from-purple-500/10 to-violet-500/10 border border-purple-500/30 rounded-lg">
                <h4 className="text-sm font-semibold text-purple-400 mb-3">Trading Setup</h4>
                <div className="grid grid-cols-1 md:grid-cols-3 gap-3">
                  {result.entry && (
                    <div>
                      <span className="text-xs text-gray-400">Entry Point</span>
                      <p className="text-yellow-300 font-mono font-semibold">
                        ${safeRender(result.entry.price || result.entry)}
                      </p>
                      {result.entry.rationale && (
                        <p className="text-xs text-gray-300 mt-1">{safeRender(result.entry.rationale)}</p>
                      )}
                    </div>
                  )}
                  
                  {result.stopLoss && (
                    <div>
                      <span className="text-xs text-gray-400">Stop Loss</span>
                      <p className="text-red-300 font-mono font-semibold">
                        ${safeRender(result.stopLoss.price || result.stopLoss)}
                      </p>
                      {result.stopLoss.rationale && (
                        <p className="text-xs text-gray-300 mt-1">{safeRender(result.stopLoss.rationale)}</p>
                      )}
                    </div>
                  )}
                  
                  {result.takeProfits && (
                    <div>
                      <span className="text-xs text-gray-400">Take Profit</span>
                      <p className="text-green-300 font-mono font-semibold">
                        {typeof result.takeProfits === 'object' 
                          ? Object.values(result.takeProfits).map(tp => `$${safeRender(tp)}`).join(', ')
                          : `$${safeRender(result.takeProfits)}`}
                      </p>
                    </div>
                  )}
                </div>
              </div>
            )}
          </div>
        </div>
      )}
    </div>
  )
}