import React, { useState } from 'react';
import { Trash2, Plus, CheckCircle2, ExternalLink, FileText } from 'lucide-react';
import { Competitor } from '../types';

interface StepReviewProps {
  competitors: Competitor[];
  onRemove: (id: string) => void;
  onAdd: (name: string) => void;
  onConfirm: () => void;
  hasResults?: boolean;
  onShowReport?: () => void;
}

export const StepReview: React.FC<StepReviewProps> = ({ competitors, onRemove, onAdd, onConfirm, hasResults, onShowReport }) => {
  const [newCompany, setNewCompany] = useState('');

  const handleAdd = (e: React.FormEvent) => {
    e.preventDefault();
    if (newCompany.trim()) {
      onAdd(newCompany.trim());
      setNewCompany('');
    }
  };

  return (
    <div className="max-w-4xl mx-auto mt-8 px-4 pb-24">
      <div className="flex items-end justify-between mb-6">
        <div>
          <h2 className="text-2xl font-bold text-slate-900">Confirm Target List</h2>
          <p className="text-slate-600 mt-1">Review the identified companies before starting the deep tech audit.</p>
        </div>
        <div className="text-right">
          <span className="bg-indigo-50 text-indigo-700 font-bold py-1 px-3 rounded-full text-sm">
            {competitors.length} Companies
          </span>
        </div>
      </div>

      <div className="bg-white rounded-xl shadow-sm border border-slate-200 overflow-hidden">
        <ul className="divide-y divide-slate-100">
          {competitors.map((comp) => (
            <li key={comp.id} className="flex items-start justify-between p-4 hover:bg-slate-50 transition-colors group">
              <div className="flex-1">
                <div className="flex items-center gap-2">
                  <span className="font-bold text-slate-800 text-lg">{comp.name}</span>
                  {comp.url && (
                    <a 
                      href={comp.url} 
                      target="_blank" 
                      rel="noreferrer" 
                      className="text-indigo-500 hover:text-indigo-700 p-1 rounded hover:bg-indigo-50"
                      title={comp.url}
                    >
                      <ExternalLink size={14} />
                    </a>
                  )}
                </div>
                {comp.description && (
                  <p className="text-sm text-slate-500 mt-1 pr-8">{comp.description}</p>
                )}
              </div>
              
              <button
                onClick={() => onRemove(comp.id)}
                className="text-slate-400 hover:text-red-500 p-2 rounded-full hover:bg-red-50 transition-colors opacity-0 group-hover:opacity-100 focus:opacity-100 self-center"
                aria-label="Remove"
              >
                <Trash2 size={18} />
              </button>
            </li>
          ))}
          {competitors.length === 0 && (
            <li className="p-8 text-center text-slate-500 italic">
              No companies in list. Add some manually below.
            </li>
          )}
        </ul>
        
        <div className="bg-slate-50 p-4 border-t border-slate-200">
            <form onSubmit={handleAdd} className="flex gap-2">
                <input 
                    type="text" 
                    value={newCompany}
                    onChange={(e) => setNewCompany(e.target.value)}
                    placeholder="Add another company manually..."
                    className="flex-1 px-4 py-2 rounded-lg border border-slate-300 focus:border-indigo-500 focus:ring-2 focus:ring-indigo-500/20 outline-none"
                />
                <button 
                    type="submit"
                    disabled={!newCompany.trim()}
                    className="bg-white border border-slate-300 text-slate-700 hover:bg-slate-100 font-medium px-4 py-2 rounded-lg flex items-center gap-2 disabled:opacity-50"
                >
                    <Plus size={18} /> Add
                </button>
            </form>
        </div>
      </div>

      {/* Sticky Footer CTA */}
      <div className="fixed bottom-0 left-0 right-0 bg-white/80 backdrop-blur-md border-t border-slate-200 p-4 z-40">
        <div className="max-w-4xl mx-auto flex justify-end gap-3">
             {hasResults && onShowReport && (
                <button
                    onClick={onShowReport}
                    className="bg-white border border-slate-300 hover:bg-slate-50 text-slate-700 font-bold py-3 px-6 rounded-xl shadow-sm transition-all flex items-center gap-2"
                >
                    <FileText size={20} /> View Report
                </button>
            )}
             <button
                onClick={onConfirm}
                disabled={competitors.length === 0}
                className="bg-emerald-600 hover:bg-emerald-700 text-white font-bold py-3 px-8 rounded-xl shadow-lg shadow-emerald-600/20 transition-all transform active:scale-[0.98] flex items-center gap-2"
            >
                <CheckCircle2 size={20} /> {hasResults ? "Restart Analysis" : "Confirm & Run Audit"}
            </button>
        </div>
      </div>
    </div>
  );
};