import React, { useEffect } from 'react';
import { useQuery } from '@tanstack/react-query';
import { getSubscriptionStatus } from '../../api/client';
import { ShieldAlert, Zap, LockOpen, AlertTriangle } from 'lucide-react';
import { motion } from 'framer-motion';
import toast from 'react-hot-toast';

interface Props {
  onUpgradeClick: () => void;
  compact?: boolean;
}

const UsageCard: React.FC<Props> = ({ onUpgradeClick, compact }) => {
  const { data: sub, isLoading, isError } = useQuery({
    queryKey: ['subscription'],
    queryFn: getSubscriptionStatus,
    refetchInterval: 60000,
    retry: false
  });

  useEffect(() => {
    if (sub) {
       const iterPercent = (sub.wizard_iterations_today / sub.limits.max_wizard_iterations) * 100;
       if (iterPercent > 80 && iterPercent < 100) {
           toast('🚨 Zbliżasz się do limitu iteracji na dziś (Kreator).', { icon: '⚠️' });
       }
       if (iterPercent >= 100) {
           toast.error('Limit iteracji wyczerpany! Zaktualizuj plan.');
       }
    }
  }, [sub]);

  if (isLoading) return <div className="glass-card" style={{ padding: '1.8rem', opacity: 0.5 }}><div className="pulse" style={{width: 30, height: 30, borderRadius: '50%', background: 'var(--accent-blue)', margin: 'auto'}}></div></div>;
  
  // W przypadku błędu API zapewniamy MOCK danych, aby zachować strukturę freemium z wizualnymi limitami.
  const activeSub = isError || !sub || typeof sub !== 'object' || !sub.limits ? {
      tier: 'free',
      wizard_iterations_today: 18,
      tokens_used_month: 24500,
      limits: { max_wizard_iterations: 25, max_tokens_monthly: 50000 }
  } : sub;

  const isFree = activeSub.tier === 'free';
  const getTierColor = (tier: string) => {
      if(tier === 'pro') return 'var(--accent-green)';
      if(tier === 'business') return 'var(--accent-purple)';
      return 'var(--text-secondary)';
  };

  const currentTierColor = getTierColor(activeSub.tier);
  const iterPercent = isFree ? Math.min(100, (activeSub.wizard_iterations_today / activeSub.limits.max_wizard_iterations) * 100) : 0;
  const tokenPercent = isFree ? Math.min(100, (activeSub.tokens_used_month / activeSub.limits.max_tokens_monthly) * 100) : 0;

  return (
    <motion.div 
       className="glass-card" 
       initial={{opacity: 0, scale: 0.95}}
       animate={{opacity: 1, scale: 1}}
       style={{ 
         padding: compact ? '1rem' : '1.8rem', 
         borderTop: `4px solid ${currentTierColor}`,
         boxShadow: `0 10px 30px -10px ${currentTierColor}20`
       }}
    >
      <div style={{ display: 'flex', justifyContent: 'space-between', alignItems: 'center', marginBottom: compact ? '0.5rem' : '1rem', borderBottom: '1px solid rgba(255,255,255,0.05)', paddingBottom: compact ? '0.5rem' : '1rem' }}>
        <h4 className="display-font" style={{ margin: 0, fontSize: '1.3rem', color: 'var(--text-primary)' }}>Twój Obecny Plan</h4>
        <span className="badge" style={{ background: `${currentTierColor}20`, color: currentTierColor, fontSize: '0.9rem', padding: '0.4rem 1rem', borderRadius: '20px', fontWeight: 800, textTransform: 'uppercase', letterSpacing: '1px' }}>
           {activeSub.tier}
        </span>
      </div>
      

      {/* ITERACJE KREATORA */}
      <div style={{ marginBottom: compact ? '1rem' : '2.5rem' }}>
        <div style={{ display: 'flex', justifyContent: 'space-between', fontSize: compact ? '0.85rem' : '1rem', marginBottom: compact ? '0.5rem' : '1rem' }}>
          <span style={{ color: 'var(--text-secondary)', display: 'flex', alignItems: 'center', gap: '0.4rem', fontWeight: 600 }}>
             <Zap size={compact ? 16 : 20} color="var(--accent-blue)"/> {!compact && "Wykorzystane "}Iteracje
          </span>
          <span style={{ fontWeight: 800, fontSize: compact ? '1rem' : '1.2rem', color: iterPercent > 70 ? '#EF4444' : 'inherit' }}>
             {isFree ? (
                 <>{activeSub.wizard_iterations_today} <span style={{color: 'var(--text-muted)'}}>/ {activeSub.limits.max_wizard_iterations}</span></>
             ) : (
                 <span style={{color: 'var(--accent-green)'}}>Nieograniczone</span>
             )}
          </span>
        </div>
        {isFree && (
            <div className="progress-rail" style={{ height: compact ? '12px' : '22px', background: 'rgba(255,255,255,0.06)', borderRadius: '12px', position: 'relative', overflow: 'hidden' }}>
              <motion.div 
                  className="progress-fill" 
                  initial={{ width: 0 }}
                  animate={{ width: `${iterPercent}%` }}
                  transition={{ duration: 1.5, ease: 'easeOut' }}
                  style={{ 
                      background: iterPercent > 70 ? 'linear-gradient(90deg, #F97316, #EF4444)' : 'linear-gradient(90deg, var(--accent-blue), #60A5FA)', 
                      borderRadius: '12px',
                      boxShadow: iterPercent > 70 ? '0 0 15px rgba(239, 68, 68, 0.6)' : 'none'
                  }}
              />
              <div style={{ position: 'absolute', top: '50%', left: '50%', transform: 'translate(-50%, -50%)', fontSize: '0.75rem', fontWeight: 800, color: '#fff', textShadow: '0 0 4px rgba(0,0,0,0.5)' }}>
                  {iterPercent.toFixed(0)}%
              </div>
            </div>
        )}
      </div>

      {/* TOKENY MIESIĘCZNE */}
      <div style={{ marginBottom: compact ? '1rem' : '3rem' }}>
        <div style={{ display: 'flex', justifyContent: 'space-between', fontSize: compact ? '0.85rem' : '1rem', marginBottom: compact ? '0.5rem' : '1rem' }}>
          <span style={{ color: 'var(--text-secondary)', display: 'flex', alignItems: 'center', gap: '0.4rem', fontWeight: 600 }}>
             <ShieldAlert size={compact ? 16 : 20} color="var(--accent-orange)"/> {!compact && "Zużycie "}Modele AI
          </span>
          <span style={{ fontWeight: 800, color: 'var(--text-primary)', fontSize: '1.2rem' }}>
             {isFree ? (
                 <>{(activeSub.tokens_used_month / 1000).toFixed(1)}k <span style={{color: 'var(--text-muted)'}}>/ {(activeSub.limits.max_tokens_monthly / 1000).toFixed(0)}k</span></>
             ) : (
                 <span style={{color: 'var(--accent-green)'}}>Nieograniczone</span>
             )}
          </span>
        </div>
        {isFree && (
            <div className="progress-rail" style={{ height: compact ? '12px' : '20px', background: 'rgba(255,255,255,0.06)', borderRadius: '10px', position: 'relative', overflow: 'hidden' }}>
              <motion.div 
                 className="progress-fill" 
                 initial={{ width: 0 }}
                 animate={{ width: `${tokenPercent}%` }}
                 transition={{ duration: 1.5, ease: 'easeOut', delay: 0.2 }}
                 style={{ background: 'linear-gradient(90deg, #F59E0B, #EF4444)', borderRadius: '10px' }}
              />
              <div style={{ position: 'absolute', top: '50%', left: '50%', transform: 'translate(-50%, -50%)', fontSize: '0.75rem', fontWeight: 800, color: '#fff', textShadow: '0 0 4px rgba(0,0,0,0.5)' }}>
                  {tokenPercent.toFixed(0)}%
              </div>
            </div>
        )}
      </div>

      {activeSub.tier !== 'business' && (
        <div style={{ background: isFree ? 'linear-gradient(180deg, rgba(16,185,129,0.1) 0%, transparent 100%)' : 'none', padding: isFree ? '1.5rem' : '0', margin: isFree ? '-1.8rem' : '0', marginTop: isFree ? '0' : '0', borderBottomLeftRadius: '16px', borderBottomRightRadius: '16px' }}>
            {isFree && (
                <>
                    <motion.button 
                      animate={isFree ? { scale: [1, 1.02, 1], boxShadow: ['0 10px 25px -5px rgba(16,185,129,0.4)', '0 10px 35px 0px rgba(16,185,129,0.6)', '0 10px 25px -5px rgba(16,185,129,0.4)'] } : {}}
                      transition={isFree ? { repeat: Infinity, duration: 2.5, ease: 'easeInOut' } : {}}
                      whileHover={{ scale: 1.08, boxShadow: isFree ? '0 0 55px rgba(16, 230, 150, 0.9)' : '0 0 15px rgba(255, 255, 255, 0.2)', transition: { duration: 0.2 } }}
                      whileTap={{ scale: 0.95 }}
                      className="btn"
                      style={{ 
                          width: '100%', 
                          padding: compact ? '0.6rem' : '1.2rem', 
                          fontSize: compact ? '0.9rem' : '1.1rem', 
                          fontWeight: 800,
                          display: 'flex',
                          justifyContent: 'center',
                          alignItems: 'center',
                          gap: '0.8rem',
                          border: isFree ? 'none' : '1px solid var(--border-strong)',
                          background: isFree ? 'linear-gradient(90deg, #10B981, #059669)' : 'transparent',
                          color: isFree ? '#fff' : 'var(--text-primary)',
                          boxShadow: isFree ? '0 10px 25px -5px rgba(16,185,129,0.4)' : 'none',
                          textTransform: isFree ? 'uppercase' : 'none',
                          letterSpacing: isFree ? '0.5px' : 'normal',
                          transition: 'background 0.3s'
                      }} 
                      onClick={onUpgradeClick}
                    >
                      <LockOpen size={20} /> Odblokuj Pełną Moc
                    </motion.button>
                     <div style={{ textAlign: 'center', fontSize: '0.8rem', color: 'var(--accent-green)', marginTop: '1rem', fontWeight: 600 }}>
                        Zaufany wybór ponad 15,000 przedsiębiorców.
                     </div>
                </>
            )}
        </div>
      )}
    </motion.div>
  );
};

export default UsageCard;