import React from 'react';
import BackButton from './BackButton';
import { useSimpleBack } from '@/hooks/useBackNavigation';

interface PageHeaderProps {
  /** 页面标题 */
  title: string;
  /** 返回按钮文本 */
  backText?: string;
  /** 自定义返回逻辑 */
  onBack?: () => void;
  /** 默认返回路径 */
  defaultBackPath?: string;
  /** 是否显示返回按钮 */
  showBack?: boolean;
  /** 右侧扩展内容 */
  rightContent?: React.ReactNode;
  /** 自定义CSS类名 */
  className?: string;
  /** 标题样式类名 */
  titleClassName?: string;
  /** 返回按钮样式变体 */
  backButtonVariant?: 'icon' | 'button' | 'text';
  /** 返回按钮自定义样式类名 */
  backButtonClassName?: string;
  /** 是否固定在顶部 */
  fixed?: boolean;
  /** 是否显示底部边框 */
  showBorder?: boolean;
}

/**
 * 通用页面Header组件
 * 支持返回按钮、标题和右侧扩展插槽
 */
export const PageHeader: React.FC<PageHeaderProps> = ({
  title,
  backText = '返回',
  onBack,
  defaultBackPath = '/',
  showBack = true,
  rightContent,
  className = '',
  titleClassName = '',
  backButtonVariant = 'icon',
  backButtonClassName = '',
  fixed = true,
  showBorder = true
}) => {
  const { goBack } = useSimpleBack(defaultBackPath);

  const handleBack = onBack || goBack;

  const baseClasses = `bg-white ${showBorder ? 'border-b border-gray-200' : ''} ${fixed ? 'fixed top-0 left-0 right-0 z-20' : ''}`;
  const headerClasses = `${baseClasses} ${className}`;
  // 默认小号按钮样式
  const defaultBackBtnClass = 'text-sm px-2 py-1 h-8 min-h-0';

  return (
    <header className={headerClasses}>
      <div className="flex items-center justify-between px-4 py-3">
        <div className="flex items-center ">
          {showBack && (
            <BackButton
              variant={backButtonVariant}
              text={backText}
              onBack={handleBack}
              className={`${defaultBackBtnClass} ${backButtonClassName}`.trim()}
            />
          )}
          <h1 className={`text-lg font-semibold ${titleClassName}`}>
            {title}
          </h1>
        </div>
        
        {rightContent && (
          <div className="flex items-center gap-2">
            {rightContent}
          </div>
        )}
      </div>
    </header>
  );
};

export default PageHeader;