/**
 * AssistantSettingsPanel Component
 * Settings for customizing assistant behavior and preferences
 */

import React, { useState } from 'react';
import {
  Settings,
  X,
  Save,
  RotateCcw,
  Bot,
  Zap,
  Shield,
  Bell,
  Sliders,
  MessageSquare,
  TrendingUp,
  Clock,
  Loader2,
} from 'lucide-react';

export interface AssistantSettings {
  // Response preferences
  responseStyle: 'concise' | 'detailed' | 'technical';
  includeCharts: boolean;
  includeSignals: boolean;
  autoAnalyze: boolean;

  // Risk profile
  riskProfile: 'conservative' | 'moderate' | 'aggressive';
  maxPositionSize: number;
  preferredTimeframes: string[];

  // Notification preferences
  signalNotifications: boolean;
  analysisNotifications: boolean;
  priceAlerts: boolean;

  // Advanced
  streamResponses: boolean;
  rememberContext: boolean;
  maxHistoryMessages: number;
}

interface AssistantSettingsPanelProps {
  settings: AssistantSettings;
  onSave: (settings: AssistantSettings) => Promise<void>;
  onClose: () => void;
  isOpen: boolean;
}

const DEFAULT_SETTINGS: AssistantSettings = {
  responseStyle: 'detailed',
  includeCharts: true,
  includeSignals: true,
  autoAnalyze: false,
  riskProfile: 'moderate',
  maxPositionSize: 2,
  preferredTimeframes: ['H1', 'H4', 'D1'],
  signalNotifications: true,
  analysisNotifications: false,
  priceAlerts: true,
  streamResponses: true,
  rememberContext: true,
  maxHistoryMessages: 50,
};

const TIMEFRAMES = ['M1', 'M5', 'M15', 'M30', 'H1', 'H4', 'D1', 'W1', 'MN'];

const AssistantSettingsPanel: React.FC<AssistantSettingsPanelProps> = ({
  settings: initialSettings,
  onSave,
  onClose,
  isOpen,
}) => {
  const [settings, setSettings] = useState<AssistantSettings>(initialSettings);
  const [isSaving, setIsSaving] = useState(false);
  const [activeTab, setActiveTab] = useState<'general' | 'risk' | 'notifications' | 'advanced'>('general');

  const handleSave = async () => {
    setIsSaving(true);
    try {
      await onSave(settings);
      onClose();
    } catch (error) {
      console.error('Failed to save settings:', error);
    } finally {
      setIsSaving(false);
    }
  };

  const handleReset = () => {
    setSettings(DEFAULT_SETTINGS);
  };

  const toggleTimeframe = (tf: string) => {
    setSettings((prev) => ({
      ...prev,
      preferredTimeframes: prev.preferredTimeframes.includes(tf)
        ? prev.preferredTimeframes.filter((t) => t !== tf)
        : [...prev.preferredTimeframes, tf],
    }));
  };

  if (!isOpen) return null;

  return (
    <div className="fixed inset-0 z-50 flex items-center justify-center bg-black/50 backdrop-blur-sm">
      <div className="w-full max-w-lg bg-gray-900 rounded-xl border border-gray-700 shadow-xl overflow-hidden">
        {/* Header */}
        <div className="flex items-center justify-between p-4 border-b border-gray-700">
          <div className="flex items-center gap-3">
            <div className="p-2 bg-blue-500/20 rounded-lg">
              <Settings className="w-5 h-5 text-blue-400" />
            </div>
            <div>
              <h2 className="font-semibold text-white">Assistant Settings</h2>
              <p className="text-sm text-gray-400">Customize your trading assistant</p>
            </div>
          </div>
          <button
            onClick={onClose}
            className="p-2 text-gray-400 hover:text-white hover:bg-gray-800 rounded-lg transition-colors"
          >
            <X className="w-5 h-5" />
          </button>
        </div>

        {/* Tabs */}
        <div className="flex border-b border-gray-700">
          {[
            { id: 'general', label: 'General', icon: Bot },
            { id: 'risk', label: 'Risk', icon: Shield },
            { id: 'notifications', label: 'Alerts', icon: Bell },
            { id: 'advanced', label: 'Advanced', icon: Sliders },
          ].map((tab) => (
            <button
              key={tab.id}
              onClick={() => setActiveTab(tab.id as typeof activeTab)}
              className={`flex-1 flex items-center justify-center gap-2 px-4 py-3 text-sm font-medium transition-colors ${
                activeTab === tab.id
                  ? 'text-blue-400 border-b-2 border-blue-400 bg-blue-500/5'
                  : 'text-gray-400 hover:text-white hover:bg-gray-800/50'
              }`}
            >
              <tab.icon className="w-4 h-4" />
              {tab.label}
            </button>
          ))}
        </div>

        {/* Content */}
        <div className="p-4 space-y-4 max-h-[400px] overflow-y-auto">
          {/* General Tab */}
          {activeTab === 'general' && (
            <div className="space-y-4">
              {/* Response Style */}
              <div>
                <label className="block text-sm font-medium text-white mb-2">
                  Response Style
                </label>
                <div className="grid grid-cols-3 gap-2">
                  {[
                    { id: 'concise', label: 'Concise', desc: 'Brief answers' },
                    { id: 'detailed', label: 'Detailed', desc: 'Full explanations' },
                    { id: 'technical', label: 'Technical', desc: 'Expert level' },
                  ].map((style) => (
                    <button
                      key={style.id}
                      onClick={() =>
                        setSettings((prev) => ({
                          ...prev,
                          responseStyle: style.id as AssistantSettings['responseStyle'],
                        }))
                      }
                      className={`p-3 rounded-lg border text-left transition-colors ${
                        settings.responseStyle === style.id
                          ? 'border-blue-500 bg-blue-500/10'
                          : 'border-gray-700 hover:border-gray-600'
                      }`}
                    >
                      <p className="text-sm font-medium text-white">{style.label}</p>
                      <p className="text-xs text-gray-500">{style.desc}</p>
                    </button>
                  ))}
                </div>
              </div>

              {/* Toggles */}
              <div className="space-y-3">
                <Toggle
                  label="Include Charts"
                  description="Show visual charts in responses"
                  icon={TrendingUp}
                  checked={settings.includeCharts}
                  onChange={(v) => setSettings((prev) => ({ ...prev, includeCharts: v }))}
                />
                <Toggle
                  label="Include Trading Signals"
                  description="Generate buy/sell signals when relevant"
                  icon={Zap}
                  checked={settings.includeSignals}
                  onChange={(v) => setSettings((prev) => ({ ...prev, includeSignals: v }))}
                />
                <Toggle
                  label="Auto-Analyze Symbols"
                  description="Automatically analyze mentioned symbols"
                  icon={Bot}
                  checked={settings.autoAnalyze}
                  onChange={(v) => setSettings((prev) => ({ ...prev, autoAnalyze: v }))}
                />
              </div>
            </div>
          )}

          {/* Risk Tab */}
          {activeTab === 'risk' && (
            <div className="space-y-4">
              {/* Risk Profile */}
              <div>
                <label className="block text-sm font-medium text-white mb-2">
                  Risk Profile
                </label>
                <div className="grid grid-cols-3 gap-2">
                  {[
                    { id: 'conservative', label: 'Conservative', color: 'green' },
                    { id: 'moderate', label: 'Moderate', color: 'yellow' },
                    { id: 'aggressive', label: 'Aggressive', color: 'red' },
                  ].map((profile) => (
                    <button
                      key={profile.id}
                      onClick={() =>
                        setSettings((prev) => ({
                          ...prev,
                          riskProfile: profile.id as AssistantSettings['riskProfile'],
                        }))
                      }
                      className={`p-3 rounded-lg border transition-colors ${
                        settings.riskProfile === profile.id
                          ? `border-${profile.color}-500 bg-${profile.color}-500/10`
                          : 'border-gray-700 hover:border-gray-600'
                      }`}
                    >
                      <p className="text-sm font-medium text-white">{profile.label}</p>
                    </button>
                  ))}
                </div>
              </div>

              {/* Max Position Size */}
              <div>
                <label className="block text-sm font-medium text-white mb-2">
                  Max Position Size (% of account)
                </label>
                <input
                  type="range"
                  min="0.5"
                  max="10"
                  step="0.5"
                  value={settings.maxPositionSize}
                  onChange={(e) =>
                    setSettings((prev) => ({
                      ...prev,
                      maxPositionSize: parseFloat(e.target.value),
                    }))
                  }
                  className="w-full"
                />
                <div className="flex justify-between text-xs text-gray-500 mt-1">
                  <span>0.5%</span>
                  <span className="text-white font-medium">{settings.maxPositionSize}%</span>
                  <span>10%</span>
                </div>
              </div>

              {/* Preferred Timeframes */}
              <div>
                <label className="block text-sm font-medium text-white mb-2">
                  Preferred Timeframes
                </label>
                <div className="flex flex-wrap gap-2">
                  {TIMEFRAMES.map((tf) => (
                    <button
                      key={tf}
                      onClick={() => toggleTimeframe(tf)}
                      className={`px-3 py-1.5 rounded-lg text-sm font-medium transition-colors ${
                        settings.preferredTimeframes.includes(tf)
                          ? 'bg-blue-600 text-white'
                          : 'bg-gray-700 text-gray-300 hover:bg-gray-600'
                      }`}
                    >
                      {tf}
                    </button>
                  ))}
                </div>
              </div>
            </div>
          )}

          {/* Notifications Tab */}
          {activeTab === 'notifications' && (
            <div className="space-y-3">
              <Toggle
                label="Signal Notifications"
                description="Get notified when new signals are generated"
                icon={Zap}
                checked={settings.signalNotifications}
                onChange={(v) => setSettings((prev) => ({ ...prev, signalNotifications: v }))}
              />
              <Toggle
                label="Analysis Updates"
                description="Get notified when analysis is complete"
                icon={TrendingUp}
                checked={settings.analysisNotifications}
                onChange={(v) => setSettings((prev) => ({ ...prev, analysisNotifications: v }))}
              />
              <Toggle
                label="Price Alerts"
                description="Get notified when prices hit targets"
                icon={Bell}
                checked={settings.priceAlerts}
                onChange={(v) => setSettings((prev) => ({ ...prev, priceAlerts: v }))}
              />
            </div>
          )}

          {/* Advanced Tab */}
          {activeTab === 'advanced' && (
            <div className="space-y-4">
              <Toggle
                label="Stream Responses"
                description="Show responses as they're generated"
                icon={MessageSquare}
                checked={settings.streamResponses}
                onChange={(v) => setSettings((prev) => ({ ...prev, streamResponses: v }))}
              />
              <Toggle
                label="Remember Context"
                description="Keep conversation context between sessions"
                icon={Clock}
                checked={settings.rememberContext}
                onChange={(v) => setSettings((prev) => ({ ...prev, rememberContext: v }))}
              />

              {/* Max History Messages */}
              <div>
                <label className="block text-sm font-medium text-white mb-2">
                  Max History Messages
                </label>
                <select
                  value={settings.maxHistoryMessages}
                  onChange={(e) =>
                    setSettings((prev) => ({
                      ...prev,
                      maxHistoryMessages: parseInt(e.target.value),
                    }))
                  }
                  className="w-full px-3 py-2 bg-gray-800 border border-gray-700 rounded-lg text-white focus:outline-none focus:border-blue-500"
                >
                  <option value={20}>20 messages</option>
                  <option value={50}>50 messages</option>
                  <option value={100}>100 messages</option>
                  <option value={200}>200 messages</option>
                </select>
                <p className="text-xs text-gray-500 mt-1">
                  Older messages will be summarized to save context
                </p>
              </div>
            </div>
          )}
        </div>

        {/* Footer */}
        <div className="flex items-center justify-between p-4 border-t border-gray-700 bg-gray-800/50">
          <button
            onClick={handleReset}
            className="flex items-center gap-2 px-4 py-2 text-sm text-gray-400 hover:text-white transition-colors"
          >
            <RotateCcw className="w-4 h-4" />
            Reset to Defaults
          </button>
          <div className="flex items-center gap-2">
            <button
              onClick={onClose}
              className="px-4 py-2 text-sm text-gray-300 hover:text-white transition-colors"
            >
              Cancel
            </button>
            <button
              onClick={handleSave}
              disabled={isSaving}
              className="flex items-center gap-2 px-4 py-2 bg-blue-600 hover:bg-blue-500 text-white rounded-lg text-sm transition-colors disabled:opacity-50"
            >
              {isSaving ? (
                <>
                  <Loader2 className="w-4 h-4 animate-spin" />
                  Saving...
                </>
              ) : (
                <>
                  <Save className="w-4 h-4" />
                  Save Settings
                </>
              )}
            </button>
          </div>
        </div>
      </div>
    </div>
  );
};

// Toggle Component
interface ToggleProps {
  label: string;
  description: string;
  icon: React.FC<{ className?: string }>;
  checked: boolean;
  onChange: (value: boolean) => void;
}

const Toggle: React.FC<ToggleProps> = ({
  label,
  description,
  icon: Icon,
  checked,
  onChange,
}) => (
  <div className="flex items-center justify-between p-3 bg-gray-800/50 rounded-lg">
    <div className="flex items-center gap-3">
      <Icon className="w-5 h-5 text-gray-400" />
      <div>
        <p className="text-sm font-medium text-white">{label}</p>
        <p className="text-xs text-gray-500">{description}</p>
      </div>
    </div>
    <button
      onClick={() => onChange(!checked)}
      className={`relative w-11 h-6 rounded-full transition-colors ${
        checked ? 'bg-blue-600' : 'bg-gray-700'
      }`}
    >
      <div
        className={`absolute top-1 w-4 h-4 bg-white rounded-full transition-transform ${
          checked ? 'translate-x-6' : 'translate-x-1'
        }`}
      />
    </button>
  </div>
);

export default AssistantSettingsPanel;