import React, { useState } from 'react';
import { Save, Key, Shield, MessageCircle, Globe, Check, Cpu, Zap, Plus, Trash2, Edit3, X, BarChart4, Newspaper, Scale, PlusCircle, MinusCircle } from 'lucide-react';
import { ApiSettings, AiConfig } from '../types';
import { InputGroup, ToggleButton } from '../components/CommonUI';

interface SettingsProps {
  settings: ApiSettings;
  onSave: (settings: ApiSettings) => void;
}

const Settings: React.FC<SettingsProps> = ({ settings, onSave }) => {
  const [formData, setFormData] = useState<ApiSettings>(settings);
  const [isSaved, setIsSaved] = useState(false);
  const [showAiModal, setShowAiModal] = useState(false);
  const [editingAi, setEditingAi] = useState<Partial<AiConfig> | null>(null);

  const handleSubmit = (e: React.FormEvent) => {
    e.preventDefault();
    onSave(formData);
    setIsSaved(true);
    setTimeout(() => setIsSaved(false), 3000);
  };

  const toggleService = (field: keyof Pick<ApiSettings, 'useTelegram' | 'useNaverNews'>) => {
    setFormData(prev => ({ ...prev, [field]: !prev[field] }));
  };

  const handleAddAi = () => {
    setEditingAi({
      id: 'ai_' + Date.now(),
      name: '',
      providerType: 'gemini',
      modelName: 'gemini-3-flash-preview',
      baseUrl: ''
    });
    setShowAiModal(true);
  };

  const handleSaveAi = () => {
    if (!editingAi?.name) return;
    const newConfigs = [...formData.aiConfigs];
    const index = newConfigs.findIndex(c => c.id === editingAi.id);
    if (index > -1) {
      newConfigs[index] = editingAi as AiConfig;
    } else {
      newConfigs.push(editingAi as AiConfig);
    }
    setFormData({ ...formData, aiConfigs: newConfigs });
    setShowAiModal(false);
    setEditingAi(null);
  };

  const handleDeleteAi = (id: string) => {
    setFormData({ ...formData, aiConfigs: formData.aiConfigs.filter(c => c.id !== id) });
  };

  return (
    <div className="max-w-5xl space-y-10 animate-in fade-in duration-500 pb-20 mx-auto">
      <div className="bg-white p-12 rounded-[3.5rem] shadow-sm border border-slate-100">
        <form onSubmit={handleSubmit} className="space-y-14">
          
          {/* KIS API Section */}
          <section>
            <div className="flex items-center justify-between mb-10">
              <h4 className="text-[12px] font-black text-slate-400 uppercase tracking-[0.25em] flex items-center gap-3">
                <Key size={20} /> KIS API 커넥터 설정
              </h4>
            </div>
            <div className="grid grid-cols-1 md:grid-cols-2 gap-8">
              <InputGroup label="앱 키" value={formData.appKey} onChange={(v) => setFormData({...formData, appKey: v})} type="password" placeholder="App Key" />
              <InputGroup label="비밀 키" value={formData.appSecret} onChange={(v) => setFormData({...formData, appSecret: v})} type="password" placeholder="Secret Key" />
              <div className="md:col-span-2">
                <InputGroup label="계좌 번호" value={formData.accountNumber} onChange={(v) => setFormData({...formData, accountNumber: v})} placeholder="예: 50061234-01" />
              </div>
            </div>
          </section>

          {/* AI 분석 자동화 설정 섹션 */}
          <section className="bg-blue-50/20 p-10 rounded-[2.5rem] border border-blue-100">
            <div className="flex items-center gap-4 mb-10">
              <div className="p-3 bg-blue-600 text-white rounded-2xl shadow-lg shadow-blue-100">
                <Zap size={24} />
              </div>
              <div>
                <h4 className="text-[12px] font-black text-slate-800 uppercase tracking-raw-2 mt-0.5">AI 분석 자동화 설정</h4>
                <p className="text-[10px] text-slate-400 font-bold uppercase tracking-widest mt-0.5">각 분석 작업별 우선 순위 엔진 지정</p>
              </div>
            </div>

            <div className="grid grid-cols-1 md:grid-cols-2 gap-8">
              <div className="space-y-3">
                <label className="text-[11px] font-black text-slate-400 uppercase tracking-widest block pl-1 flex items-center gap-2">
                  <Newspaper size={14} className="text-blue-500" /> 뉴스 분석 엔진
                </label>
                <select 
                  className="w-full p-4 bg-white border border-slate-200 rounded-[1.2rem] focus:border-blue-500 outline-none transition-all font-bold text-slate-800 shadow-sm"
                  value={formData.preferredNewsAiId || ''}
                  onChange={(e) => setFormData({...formData, preferredNewsAiId: e.target.value})}
                >
                  <option value="">선택 안 함</option>
                  {formData.aiConfigs.map(c => <option key={c.id} value={c.id}>{c.name}</option>)}
                </select>
              </div>

              <div className="space-y-3">
                <label className="text-[11px] font-black text-slate-400 uppercase tracking-widest block pl-1 flex items-center gap-2">
                  <BarChart4 size={14} className="text-purple-500" /> 종목 분석 엔진
                </label>
                <select 
                  className="w-full p-4 bg-white border border-slate-200 rounded-[1.2rem] focus:border-blue-500 outline-none transition-all font-bold text-slate-800 shadow-sm"
                  value={formData.preferredStockAiId || ''}
                  onChange={(e) => setFormData({...formData, preferredStockAiId: e.target.value})}
                >
                  <option value="">선택 안 함</option>
                  {formData.aiConfigs.map(c => <option key={c.id} value={c.id}>{c.name}</option>)}
                </select>
              </div>

              <div className="space-y-3">
                <label className="text-[11px] font-black text-slate-400 uppercase tracking-widest block pl-1 flex items-center gap-2">
                  <Scale size={14} className="text-amber-500" /> 뉴스 판단 엔진
                </label>
                <select 
                  className="w-full p-4 bg-white border border-slate-200 rounded-[1.2rem] focus:border-blue-500 outline-none transition-all font-bold text-slate-800 shadow-sm"
                  value={formData.preferredNewsJudgementAiId || ''}
                  onChange={(e) => setFormData({...formData, preferredNewsJudgementAiId: e.target.value})}
                >
                  <option value="">선택 안 함</option>
                  {formData.aiConfigs.map(c => <option key={c.id} value={c.id}>{c.name}</option>)}
                </select>
              </div>

              <div className="space-y-3">
                <label className="text-[11px] font-black text-slate-400 uppercase tracking-widest block pl-1 flex items-center gap-2">
                  <PlusCircle size={14} className="text-rose-500" /> 자동매수 엔진
                </label>
                <select 
                  className="w-full p-4 bg-white border border-slate-200 rounded-[1.2rem] focus:border-blue-500 outline-none transition-all font-bold text-slate-800 shadow-sm"
                  value={formData.preferredAutoBuyAiId || ''}
                  onChange={(e) => setFormData({...formData, preferredAutoBuyAiId: e.target.value})}
                >
                  <option value="">선택 안 함</option>
                  {formData.aiConfigs.map(c => <option key={c.id} value={c.id}>{c.name}</option>)}
                </select>
              </div>

              <div className="space-y-3 md:col-span-2">
                <label className="text-[11px] font-black text-slate-400 uppercase tracking-widest block pl-1 flex items-center gap-2">
                  <MinusCircle size={14} className="text-blue-600" /> 자동매도 엔진
                </label>
                <select 
                  className="w-full p-4 bg-white border border-slate-200 rounded-[1.2rem] focus:border-blue-500 outline-none transition-all font-bold text-slate-800 shadow-sm"
                  value={formData.preferredAutoSellAiId || ''}
                  onChange={(e) => setFormData({...formData, preferredAutoSellAiId: e.target.value})}
                >
                  <option value="">선택 안 함</option>
                  {formData.aiConfigs.map(c => <option key={c.id} value={c.id}>{c.name}</option>)}
                </select>
              </div>
            </div>
          </section>

          {/* Telegram Notification Section */}
          <section className="bg-slate-50 p-10 rounded-[2.5rem] border border-slate-100">
            <div className="flex items-center justify-between mb-10">
              <div className="flex items-center gap-4">
                <div className={`p-3 rounded-2xl ${formData.useTelegram ? 'bg-blue-100 text-blue-600' : 'bg-slate-200 text-slate-400'}`}>
                  <MessageCircle size={24} />
                </div>
                <div>
                  <h4 className="text-[12px] font-black text-slate-800 uppercase tracking-[0.2em]">텔레그램 알림 봇 연동</h4>
                  <p className="text-[10px] text-slate-400 font-bold uppercase tracking-widest mt-0.5">체결 알림 및 상태 보고</p>
                </div>
              </div>
              <ToggleButton active={formData.useTelegram} onClick={() => toggleService('useTelegram')} />
            </div>
            
            {formData.useTelegram && (
              <div className="grid grid-cols-1 md:grid-cols-2 gap-8 animate-in slide-in-from-top-4 duration-300">
                <InputGroup label="봇 토큰" value={formData.telegramToken} onChange={(v) => setFormData({...formData, telegramToken: v})} placeholder="Bot API Token" />
                <InputGroup label="채팅 ID" value={formData.telegramChatId} onChange={(v) => setFormData({...formData, telegramChatId: v})} placeholder="Chat ID" />
              </div>
            )}
          </section>

          {/* Naver News API Section */}
          <section className="bg-slate-50 p-10 rounded-[2.5rem] border border-slate-100">
            <div className="flex items-center justify-between mb-10">
              <div className="flex items-center gap-4">
                <div className={`p-3 rounded-2xl ${formData.useNaverNews ? 'bg-emerald-100 text-emerald-600' : 'bg-slate-200 text-slate-400'}`}>
                  <Globe size={24} />
                </div>
                <div>
                  <h4 className="text-[12px] font-black text-slate-800 uppercase tracking-[0.2em]">네이버 뉴스 스크랩 연동</h4>
                  <p className="text-[10px] text-slate-400 font-bold uppercase tracking-widest mt-0.5">실시간 금융 뉴스 분석</p>
                </div>
              </div>
              <ToggleButton active={formData.useNaverNews} onClick={() => toggleService('useNaverNews')} />
            </div>
            
            {formData.useNaverNews && (
              <div className="grid grid-cols-1 md:grid-cols-2 gap-8 animate-in slide-in-from-top-4 duration-300">
                <InputGroup label="Client ID" value={formData.naverClientId} onChange={(v) => setFormData({...formData, naverClientId: v})} placeholder="Naver Client ID" />
                <InputGroup label="Client Secret" value={formData.naverClientSecret} onChange={(v) => setFormData({...formData, naverClientSecret: v})} type="password" placeholder="Naver Client Secret" />
              </div>
            )}
          </section>

          <div className="pt-10 border-t border-slate-100 flex flex-col sm:flex-row items-center justify-between gap-8">
            <div className="flex items-center gap-4 text-slate-400 text-sm font-medium bg-slate-50 px-6 py-4 rounded-2xl border border-slate-100">
               <Shield size={22} className="text-emerald-500" />
               로컬 데이터 보안 격리 저장 활성화됨
            </div>
            <button 
              type="submit"
              className={`w-full sm:w-auto px-16 py-6 rounded-3xl font-black uppercase text-sm tracking-widest shadow-2xl transition-all flex items-center justify-center gap-4 ${isSaved ? 'bg-emerald-500 text-white shadow-emerald-200 scale-95' : 'bg-slate-900 text-white hover:bg-slate-800 shadow-slate-300 active:scale-95'}`}
            >
              {isSaved ? <><Check size={24} /> 저장됨</> : <><Save size={24} /> 설정 저장</>}
            </button>
          </div>
        </form>
      </div>

      {/* AI Engine Modal */}
      {showAiModal && (
        <div className="fixed inset-0 z-[150] bg-slate-900/60 backdrop-blur-sm flex items-center justify-center p-6">
          <div className="bg-white w-full max-w-lg rounded-[3rem] p-10 shadow-2xl animate-in zoom-in-95 duration-200 border border-slate-100">
            <div className="flex justify-between items-center mb-10">
              <h3 className="text-2xl font-black text-slate-900 flex items-center gap-3 uppercase tracking-tight">
                <Cpu className="text-blue-600" /> AI 엔진 프로파일러
              </h3>
              <button onClick={() => setShowAiModal(false)} className="p-2 hover:bg-slate-100 rounded-full transition-colors"><X size={28} className="text-slate-400" /></button>
            </div>
            
            <div className="space-y-6">
              <InputGroup label="엔진 식별 이름" value={editingAi?.name || ''} onChange={(v) => setEditingAi({...editingAi, name: v})} placeholder="예: 구글 고성능 모델, Ollama Llama3" />
              <div className="space-y-3">
                <label className="text-[11px] font-black text-slate-400 uppercase tracking-widest ml-1">프로바이더 타입</label>
                <div className="flex bg-slate-100 p-1.5 rounded-2xl">
                  <button type="button" onClick={() => setEditingAi({...editingAi, providerType: 'gemini'})} className={`flex-1 py-3 rounded-xl text-[11px] font-black transition-all ${editingAi?.providerType === 'gemini' ? 'bg-white text-blue-600 shadow-sm' : 'text-slate-400'}`}>Gemini</button>
                  <button type="button" onClick={() => setEditingAi({...editingAi, providerType: 'openai-compatible'})} className={`flex-1 py-3 rounded-xl text-[11px] font-black transition-all ${editingAi?.providerType === 'openai-compatible' ? 'bg-white text-blue-600 shadow-sm' : 'text-slate-400'}`}>Ollama / OpenAI</button>
                </div>
              </div>
              <InputGroup label="모델명" value={editingAi?.modelName || ''} onChange={(v) => setEditingAi({...editingAi, modelName: v})} placeholder={editingAi?.providerType === 'gemini' ? 'gemini-3-flash-preview' : 'llama3'} />
              {editingAi?.providerType === 'openai-compatible' && (
                <InputGroup label="베이스 URL (API End-point)" value={editingAi?.baseUrl || ''} onChange={(v) => setEditingAi({...editingAi, baseUrl: v})} placeholder="http://localhost:11434/v1" />
              )}
              <button 
                type="button"
                onClick={handleSaveAi}
                className="w-full py-5 bg-blue-600 text-white rounded-[1.5rem] font-black uppercase text-[12px] tracking-widest hover:bg-blue-700 transition-all shadow-xl shadow-blue-100 mt-6"
              >
                엔진 프로필 저장
              </button>
            </div>
          </div>
        </div>
      )}
    </div>
  );
};

export default Settings;