import React from 'react';
import { LogoBase64, SunIcon, MoonIcon, RefreshIcon, SignOutIcon } from './Icons';
import { useTheme } from '../context/ThemeContext';
import type { AIProvider } from '../types/providers';

interface HeaderProps {
  onReset: () => void;
  onClearKey: () => void;
  hasKey: boolean;
  provider?: AIProvider;
}

export const Header: React.FC<HeaderProps> = ({ onReset, onClearKey, hasKey, provider }) => {
  const { theme, toggleTheme } = useTheme();

  const providerColors: Record<AIProvider, string> = {
    gemini: 'from-blue-500 to-indigo-600',
    openai: 'from-green-500 to-emerald-600',
    anthropic: 'from-orange-500 to-amber-600',
    azure: 'from-blue-600 to-cyan-600'
  };

  const providerNames: Record<AIProvider, string> = {
    gemini: 'Gemini',
    openai: 'OpenAI',
    anthropic: 'Claude',
    azure: 'Azure'
  };

  return (
    <header className="sticky top-0 z-30 transition-all duration-300 backdrop-blur-md bg-white/70 dark:bg-slate-900/70 border-b border-white/20 dark:border-slate-800 shadow-sm">
      <div className="container mx-auto px-4 py-3 flex items-center justify-between">
        <div className="flex items-center gap-3">
          <div className="relative group cursor-pointer">
            <div className="absolute -inset-1 bg-gradient-to-r from-blue-600 to-indigo-600 rounded-full blur opacity-25 group-hover:opacity-50 transition duration-1000 group-hover:duration-200"></div>
            <img src={LogoBase64} alt="SteelCheck Logo" className="relative w-10 h-10 object-contain" />
          </div>

          <div className="hidden sm:block">
            <h1 className="text-2xl font-display font-bold bg-clip-text text-transparent bg-gradient-to-r from-slate-900 to-slate-700 dark:from-white dark:to-slate-300">
              SteelCheck
            </h1>
          </div>
        </div>

        <div className="flex items-center gap-2 sm:gap-4">
          {hasKey && provider && (
            <div className={`hidden sm:flex items-center gap-2 px-3 py-1.5 rounded-full bg-gradient-to-r ${providerColors[provider]} text-white text-xs font-medium`}>
              {providerNames[provider]}
            </div>
          )}

          {hasKey && (
            <button
              onClick={onClearKey}
              className="hidden sm:flex items-center gap-2 px-3 py-1.5 rounded-full text-xs font-medium text-slate-500 hover:text-red-500 hover:bg-red-50 dark:text-slate-400 dark:hover:bg-red-900/20 transition-all border border-transparent hover:border-red-200 dark:hover:border-red-900"
              title="Alterar Chave de API"
            >
              <SignOutIcon className="w-4 h-4" />
              <span>Sair</span>
            </button>
          )}

          <div className="flex items-center gap-1 bg-slate-100 dark:bg-slate-800/50 p-1 rounded-full border border-slate-200 dark:border-slate-700">
            <button
              onClick={onReset}
              className="p-2 rounded-full text-slate-500 dark:text-slate-400 hover:bg-white dark:hover:bg-slate-700 hover:shadow-sm focus:outline-none transition-all"
              aria-label="Carregar outro arquivo"
              title="Novo Relatório"
            >
              <RefreshIcon className="w-5 h-5" />
            </button>

            <div className="w-px h-4 bg-slate-300 dark:bg-slate-700 mx-1"></div>

            <button
              onClick={toggleTheme}
              className="p-2 rounded-full text-slate-500 dark:text-slate-400 hover:bg-white dark:hover:bg-slate-700 hover:shadow-sm focus:outline-none transition-all relative overflow-hidden"
              aria-label="Toggle theme"
            >
              <div className="relative z-10">
                {theme === 'light' ? (
                  <MoonIcon className="w-5 h-5" />
                ) : (
                  <SunIcon className="w-5 h-5" />
                )}
              </div>
            </button>
          </div>
        </div>
      </div>
    </header>
  );
};