import { Button as TaroButton, ButtonProps as TaroButtonProps } from '@tarojs/components'
import { cn } from '@/utils/cn'
import { cva, type VariantProps } from 'class-variance-authority'

// 1. 基础重置按钮：仅清除Taro默认样式（不使用!important）
interface ResetButtonProps extends TaroButtonProps {
  className?: string
}

const ResetTaroButton = ({ className, ...props }: ResetButtonProps) => {
  // 重置样式：仅清除默认样式，不强制覆盖（无!前缀）
  const resetStyles = 'w-auto bg-transparent border-0 text-inherit text-sm leading-normal p-0 m-0 min-h-0 min-w-0 [&[disabled]]:text-inherit'
  
  return (
    <TaroButton
      className={cn(resetStyles, className)} // 允许用户className覆盖重置样式
      {...props}
    />
  )
}

// 2. 按钮样式变体
const buttonVariants = cva(
  'inline-flex items-center justify-center rounded-md text-sm font-medium transition-colors focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2 [&[disabled]]:opacity-50 [&[disabled]]:pointer-events-none ring-offset-background',
  {
    variants: {
      variant: {
        default: 'bg-primary text-primary-foreground hover:bg-primary/90',
        destructive: 'bg-destructive text-destructive-foreground hover:bg-destructive/90',
        outline: 'border border-input hover:bg-accent hover:text-accent-foreground',
        secondary: 'bg-secondary text-secondary-foreground hover:bg-secondary/80',
        ghost: 'hover:bg-accent hover:text-accent-foreground',
        link: 'underline-offset-4 hover:underline text-primary',
      },
      size: {
        default: 'h-10 py-2 px-4',
        sm: 'h-9 px-3 rounded-md text-xs',
        lg: 'h-11 px-8 rounded-md',
        icon: 'h-10 w-10',
      },
    },
    defaultVariants: {
      variant: 'default',
      size: 'default',
    },
  }
)

// 3. 业务按钮组件（基于重置按钮）
interface ButtonProps extends Omit<TaroButtonProps, 'size'>, VariantProps<typeof buttonVariants> {
  className?: string
  children?: React.ReactNode
}

export function Button({ className, variant, size, disabled, ...props }: ButtonProps) {
  return (
    <ResetTaroButton
      className={cn(
        buttonVariants({ variant, size }), // 先应用变体样式
        className // 最后应用用户样式（确保能覆盖前面的样式）
      )}
      disabled={disabled === true? true: undefined}
      {...props}
    />
  )
}

export { buttonVariants }
