import React, { useState, useEffect } from 'react';
import { motion, AnimatePresence } from 'framer-motion';
import axios from 'axios';
import toast from 'react-hot-toast';
import ExampleCard from '../components/ExampleCard';
import { Shuffle, RefreshCw, Database } from 'lucide-react';

const Random = () => {
  const [currentExample, setCurrentExample] = useState(null);
  const [loading, setLoading] = useState(true);
  const [refreshing, setRefreshing] = useState(false);
  const [stats, setStats] = useState({ totalExamples: 0 });

  const fetchRandomExample = async (showLoadingState = true) => {
    if (showLoadingState) {
      setRefreshing(true);
    }
    
    try {
      const response = await axios.get('/api/examples/random');
      setCurrentExample(response.data.data);
    } catch (error) {
      toast.error('Failed to load random example');
      console.error('Error fetching random example:', error);
    } finally {
      setLoading(false);
      setRefreshing(false);
    }
  };

  const fetchStats = async () => {
    try {
      const response = await axios.get('/api/stats');
      setStats(response.data.data);
    } catch (error) {
      console.error('Error fetching stats:', error);
    }
  };

  useEffect(() => {
    fetchRandomExample();
    fetchStats();
  }, []);

  const handleNewExample = () => {
    fetchRandomExample(true);
  };

  if (loading) {
    return (
      <div className="loading">
        <div className="spinner"></div>
      </div>
    );
  }

  return (
    <motion.div
      initial={{ opacity: 0, y: 20 }}
      animate={{ opacity: 1, y: 0 }}
      transition={{ duration: 0.6 }}
    >
      <div className="card" style={{ 
        marginBottom: '2rem', 
        textAlign: 'center',
        maxWidth: '800px',
        margin: '0 auto 2rem auto'
      }}>
        <h1 style={{ 
          marginBottom: '1rem', 
          display: 'flex', 
          alignItems: 'center', 
          justifyContent: 'center',
          gap: '0.5rem' 
        }}>
          <Shuffle size={24} />
          Random Discovery
        </h1>
        <p style={{ color: '#666', marginBottom: '1.5rem' }}>
          Discover transcreation examples through serendipitous exploration. 
          Each click reveals a new example to inspire and educate.
        </p>

        <div style={{ 
          display: 'flex', 
          gap: '1rem', 
          justifyContent: 'center', 
          flexWrap: 'wrap',
          marginBottom: '1rem'
        }}>
          <button 
            className="btn"
            onClick={handleNewExample}
            disabled={refreshing}
            style={{ 
              display: 'inline-flex',
              alignItems: 'center',
              gap: '0.5rem'
            }}
          >
            {refreshing ? (
              <>
                <RefreshCw size={20} className="spin" />
                Loading...
              </>
            ) : (
              <>
                <Shuffle size={20} />
                {currentExample ? 'Get Another Example' : 'Try Again'}
              </>
            )}
          </button>
        </div>

        <div style={{ 
          display: 'flex', 
          alignItems: 'center', 
          justifyContent: 'center',
          gap: '1rem',
          fontSize: '0.9rem',
          color: '#666'
        }}>
          <div style={{ display: 'flex', alignItems: 'center', gap: '0.25rem' }}>
            <Database size={14} />
            <span>{stats.totalExamples} examples available</span>
          </div>
        </div>
      </div>

      {currentExample ? (
        <AnimatePresence mode="wait">
          <motion.div
            key={currentExample.id}
            initial={{ opacity: 0, scale: 0.95 }}
            animate={{ opacity: 1, scale: 1 }}
            exit={{ opacity: 0, scale: 0.95 }}
            transition={{ duration: 0.3 }}
            style={{ 
              maxWidth: '800px', 
              margin: '0 auto'
            }}
          >
            <ExampleCard example={currentExample} />
          </motion.div>
        </AnimatePresence>
      ) : (
        <div className="card" style={{ textAlign: 'center', padding: '3rem' }}>
          <h3 style={{ marginBottom: '1rem' }}>No examples available</h3>
          <p style={{ color: '#666', marginBottom: '1.5rem' }}>
            Please try again later.
          </p>
          <button 
            className="btn"
            onClick={handleNewExample}
            disabled={refreshing}
            style={{ 
              display: 'inline-flex',
              alignItems: 'center',
              gap: '0.5rem'
            }}
          >
            {refreshing ? (
              <>
                <RefreshCw size={20} className="spin" />
                Loading...
              </>
            ) : (
              <>
                <Shuffle size={20} />
                Try Again
              </>
            )}
          </button>
        </div>
      )}

      <style jsx>{`
        .spin {
          animation: spin 1s linear infinite;
        }
        
        @keyframes spin {
          from { transform: rotate(0deg); }
          to { transform: rotate(360deg); }
        }
      `}</style>
    </motion.div>
  );
};

export default Random;