import React, { useEffect, useState } from 'react';
import { healthCheck, getModelInfo } from '../api/api';
import { HealthResponse, ModelInfoResponse } from '../types/api';

const Home: React.FC = () => {
  const [health, setHealth] = useState<HealthResponse | null>(null);
  const [modelInfo, setModelInfo] = useState<ModelInfoResponse | null>(null);
  const [loading, setLoading] = useState(true);
  const [error, setError] = useState<string | null>(null);

  useEffect(() => {
    const fetchData = async () => {
      try {
        const [healthData, modelData] = await Promise.all([
          healthCheck(),
          getModelInfo()
        ]);
        setHealth(healthData);
        setModelInfo(modelData);
      } catch (err) {
        setError('Failed to fetch data from the server');
      } finally {
        setLoading(false);
      }
    };

    fetchData();
  }, []);

  if (loading) {
    return (
      <div className="flex justify-center items-center h-64">
        <div className="animate-spin rounded-full h-12 w-12 border-b-2 border-primary-500"></div>
      </div>
    );
  }

  if (error) {
    return (
      <div className="bg-red-50 border-l-4 border-red-400 p-4">
        <div className="flex">
          <div className="flex-shrink-0">
            <svg className="h-5 w-5 text-red-400" viewBox="0 0 20 20" fill="currentColor">
              <path fillRule="evenodd" d="M10 18a8 8 0 100-16 8 8 0 000 16zM8.707 7.293a1 1 0 00-1.414 1.414L8.586 10l-1.293 1.293a1 1 0 101.414 1.414L10 11.414l1.293 1.293a1 1 0 001.414-1.414L11.414 10l1.293-1.293a1 1 0 00-1.414-1.414L10 8.586 8.707 7.293z" clipRule="evenodd" />
            </svg>
          </div>
          <div className="ml-3">
            <p className="text-sm text-red-700">{error}</p>
          </div>
        </div>
      </div>
    );
  }

  return (
    <div className="space-y-6">
      <div className="bg-white shadow overflow-hidden sm:rounded-lg">
        <div className="px-4 py-5 sm:px-6">
          <h3 className="text-lg leading-6 font-medium text-gray-900">System Status</h3>
        </div>
        <div className="border-t border-gray-200">
          <dl>
            <div className="bg-gray-50 px-4 py-5 sm:grid sm:grid-cols-3 sm:gap-4 sm:px-6">
              <dt className="text-sm font-medium text-gray-500">Status</dt>
              <dd className="mt-1 text-sm text-gray-900 sm:mt-0 sm:col-span-2">
                {health?.status}
              </dd>
            </div>
            <div className="bg-white px-4 py-5 sm:grid sm:grid-cols-3 sm:gap-4 sm:px-6">
              <dt className="text-sm font-medium text-gray-500">Model Ready</dt>
              <dd className="mt-1 text-sm text-gray-900 sm:mt-0 sm:col-span-2">
                {health?.model_ready ? 'Yes' : 'No'}
              </dd>
            </div>
            <div className="bg-gray-50 px-4 py-5 sm:grid sm:grid-cols-3 sm:gap-4 sm:px-6">
              <dt className="text-sm font-medium text-gray-500">API Key Configured</dt>
              <dd className="mt-1 text-sm text-gray-900 sm:mt-0 sm:col-span-2">
                {health?.api_key_configured ? 'Yes' : 'No'}
              </dd>
            </div>
          </dl>
        </div>
      </div>

      <div className="bg-white shadow overflow-hidden sm:rounded-lg">
        <div className="px-4 py-5 sm:px-6">
          <h3 className="text-lg leading-6 font-medium text-gray-900">Model Information</h3>
        </div>
        <div className="border-t border-gray-200">
          <dl>
            <div className="bg-gray-50 px-4 py-5 sm:grid sm:grid-cols-3 sm:gap-4 sm:px-6">
              <dt className="text-sm font-medium text-gray-500">Model Name</dt>
              <dd className="mt-1 text-sm text-gray-900 sm:mt-0 sm:col-span-2">
                {modelInfo?.model_name}
              </dd>
            </div>
            <div className="bg-white px-4 py-5 sm:grid sm:grid-cols-3 sm:gap-4 sm:px-6">
              <dt className="text-sm font-medium text-gray-500">Model Version</dt>
              <dd className="mt-1 text-sm text-gray-900 sm:mt-0 sm:col-span-2">
                {modelInfo?.model_version}
              </dd>
            </div>
            <div className="bg-gray-50 px-4 py-5 sm:grid sm:grid-cols-3 sm:gap-4 sm:px-6">
              <dt className="text-sm font-medium text-gray-500">Max Tokens</dt>
              <dd className="mt-1 text-sm text-gray-900 sm:mt-0 sm:col-span-2">
                {modelInfo?.max_tokens}
              </dd>
            </div>
            <div className="bg-white px-4 py-5 sm:grid sm:grid-cols-3 sm:gap-4 sm:px-6">
              <dt className="text-sm font-medium text-gray-500">Temperature</dt>
              <dd className="mt-1 text-sm text-gray-900 sm:mt-0 sm:col-span-2">
                {modelInfo?.temperature}
              </dd>
            </div>
          </dl>
        </div>
      </div>
    </div>
  );
};

export default Home;