/**
 * Tag 组件
 * 
 * 统一的标签组件，遵循三层架构设计，采用苹果美学风格
 * 用于显示分类、类型等标签信息
 * 支持多种颜色（blue、green、orange、purple等）和尺寸（sm、md、lg）
 * 支持点击事件，可用于筛选等功能
 * 
 * 苹果美学特点：
 * - 圆角更大（rounded-full）
 * - 背景色更柔和（低饱和度）
 * - 选中状态使用更明显的视觉反馈
 * - 过渡动画更流畅
 * 
 * @created 2025-11-22
 * @updated 2025-01-22 - 重新设计为苹果美学风格
 * @component
 */

'use client'

import { ReactNode } from 'react'
import { useThemeStyles, cn } from '@/lib/ui-styles'

interface TagProps {
  children: ReactNode
  color?: 'blue' | 'green' | 'orange' | 'purple' | 'indigo' | 'pink' | 'cyan'
  size?: 'xs' | 'sm' | 'md' | 'lg'
  className?: string
  onClick?: () => void
  selected?: boolean
}

export default function Tag({
  children,
  color = 'blue',
  size = 'md',
  className = '',
  onClick,
  selected = false,
}: TagProps) {
  // 使用主题样式钩子（保留以便将来扩展）
  useThemeStyles()

  // 苹果美学风格的颜色配置（更柔和的背景，更清晰的文字）
  // 修复：提高未选中状态的文字对比度，确保在素材数量为0时文字仍然可见
  // 2025-12-13: 增强hover状态的文字颜色对比度，使用更深的文字颜色
  const colorClasses = {
    blue: selected
      ? 'bg-blue-500 dark:bg-blue-600 text-white border-blue-500 dark:border-blue-600'
      : 'bg-blue-50 dark:bg-blue-900/50 text-blue-700 dark:text-blue-100 border-blue-200 dark:border-blue-700/70 hover:bg-blue-100 dark:hover:bg-blue-800/60 hover:text-blue-900 dark:hover:text-white',
    green: selected
      ? 'bg-emerald-500 dark:bg-emerald-600 text-white border-emerald-500 dark:border-emerald-600'
      : 'bg-emerald-50 dark:bg-emerald-900/50 text-emerald-700 dark:text-emerald-100 border-emerald-200 dark:border-emerald-700/70 hover:bg-emerald-100 dark:hover:bg-emerald-800/60 hover:text-emerald-900 dark:hover:text-white',
    orange: selected
      ? 'bg-orange-500 dark:bg-orange-600 text-white border-orange-500 dark:border-orange-600'
      : 'bg-orange-50 dark:bg-orange-900/50 text-orange-700 dark:text-orange-100 border-orange-200 dark:border-orange-700/70 hover:bg-orange-100 dark:hover:bg-orange-800/60 hover:text-orange-900 dark:hover:text-white',
    purple: selected
      ? 'bg-purple-500 dark:bg-purple-600 text-white border-purple-500 dark:border-purple-600'
      : 'bg-purple-50 dark:bg-purple-900/50 text-purple-700 dark:text-purple-100 border-purple-200 dark:border-purple-700/70 hover:bg-purple-100 dark:hover:bg-purple-800/60 hover:text-purple-900 dark:hover:text-white',
    indigo: selected
      ? 'bg-indigo-500 dark:bg-indigo-600 text-white border-indigo-500 dark:border-indigo-600'
      : 'bg-indigo-50 dark:bg-indigo-900/50 text-indigo-700 dark:text-indigo-100 border-indigo-200 dark:border-indigo-700/70 hover:bg-indigo-100 dark:hover:bg-indigo-800/60 hover:text-indigo-900 dark:hover:text-white',
    pink: selected
      ? 'bg-pink-500 dark:bg-pink-600 text-white border-pink-500 dark:border-pink-600'
      : 'bg-pink-50 dark:bg-pink-900/50 text-pink-700 dark:text-pink-100 border-pink-200 dark:border-pink-700/70 hover:bg-pink-100 dark:hover:bg-pink-800/60 hover:text-pink-900 dark:hover:text-white',
    cyan: selected
      ? 'bg-cyan-500 dark:bg-cyan-600 text-white border-cyan-500 dark:border-cyan-600'
      : 'bg-cyan-50 dark:bg-cyan-900/50 text-cyan-700 dark:text-cyan-100 border-cyan-200 dark:border-cyan-700/70 hover:bg-cyan-100 dark:hover:bg-cyan-800/60 hover:text-cyan-900 dark:hover:text-white',
  }

  const sizeClasses = {
    xs: 'px-2.5 py-0.5 text-[11px] font-medium',
    sm: 'px-3 py-1 text-xs font-medium',
    md: 'px-4 py-1.5 text-sm font-medium',
    lg: 'px-5 py-2 text-base font-medium',
  } as const

  // 苹果美学：圆角更大，过渡更流畅，选中状态有阴影
  const baseClasses = cn(
    'inline-flex items-center justify-center',
    'rounded-full border',
    'transition-all duration-200 ease-out',
    'backdrop-blur-sm',
    selected && 'shadow-md scale-105',
    !selected && onClick && 'hover:scale-105 hover:shadow-sm',
    onClick && 'cursor-pointer active:scale-95'
  )

  return (
    <span
      className={cn(
        baseClasses,
        colorClasses[color],
        sizeClasses[size],
        className
      )}
      onClick={onClick}
    >
      {children}
    </span>
  )
}