import * as React from "react"
import { AlertCircle } from "lucide-react"
import { Button } from "@/components/ui/button"

import { cn } from "@/lib/utils"


/**
 * 错误展示组件属性
 * 用于统一显示加载失败、请求失败等错误状态
 */
export interface ErrorDisplayProps {
  title?: string
  message?: string
  error?: Error | null
  onRetry?: () => void
  retryText?: string
  icon?: React.ComponentType<{ className?: string }>
  className?: string
  showStack?: boolean
}

/**
 * 错误展示组件
 * 用于统一显示加载失败、请求失败等错误状态
 * 
 * @example
 * ```tsx
 * // 基础用法
 * <ErrorDisplay 
 *   title="加载失败" 
 *   message="无法获取数据，请稍后重试" 
 * />
 * 
 * // 带重试按钮
 * <ErrorDisplay 
 *   error={error}
 *   onRetry={() => refetch()} 
 * />
 * 
 * // 自定义样式
 * <ErrorDisplay 
 *   title="网络错误"
 *   message="请检查您的网络连接"
 *   className="min-h-[400px]"
 * />
 * ```
 * @param {ErrorDisplayProps} props - 错误展示组件属性
 * @returns {React.ReactNode} 错误展示组件
 */
export function ErrorDisplay({
  title = "加载失败",
  message,
  error,
  onRetry,
  retryText = "重试",
  icon: Icon = AlertCircle,
  className,
  showStack = false,
}: ErrorDisplayProps) {
  const errorMessage = message || error?.message || "发生未知错误，请稍后重试"

  return (
    <div className={cn("flex flex-col items-center justify-center py-12 text-center", className)}>
      <div className="size-12 rounded-full bg-red-100 dark:bg-red-900/20 flex items-center justify-center mb-4">
        <Icon className="size-6 text-red-600 dark:text-red-400" />
      </div>

      <h3 className="text-lg font-semibold mb-2">{title}</h3>

      <p className="text-sm text-muted-foreground max-w-md mb-4">{errorMessage}</p>

      {onRetry && (
        <Button
          onClick={onRetry}
          variant="outline"
          className="mt-2"
        >
          {retryText}
        </Button>
      )}

      {showStack && error?.stack && process.env.NODE_ENV === 'development' && (
        <details className="mt-6 text-left max-w-2xl w-full">
          <summary className="cursor-pointer text-xs text-muted-foreground hover:text-foreground">
            查看详细错误信息
          </summary>
          <pre className="mt-2 p-4 bg-muted rounded-lg text-xs overflow-auto">
            {error.stack}
          </pre>
        </details>
      )}
    </div>
  )
}

/**
 * 区域级错误组件
 * 适合在较小的区域显示错误
 * 
 * @example
 * ```tsx
 * <ErrorInline 
 *   message="发生错误" 
 *   error={error} 
 *   onRetry={() => refetch()} 
 * />
 * ```
 */
export function ErrorInline({
  message,
  error,
  onRetry,
  className,
}: Omit<ErrorDisplayProps, 'title' | 'icon' | 'showStack'>) {
  const errorMessage = message || error?.message || "发生未知错误"

  return (
    <div className={cn("flex items-center gap-2 text-sm text-red-600 dark:text-red-400", className)}>
      <AlertCircle className="size-3 shrink-0 text-destructive" />
      <span className="flex-1 text-xs">{errorMessage}</span>
      {onRetry && (
        <Button
          onClick={onRetry}
          variant="secondary"
          size="sm"
          className="h-6 px-4 text-xs"
        >
          重试
        </Button>
      )}
    </div>
  )
}

/**
 * 页面级错误组件
 * 适合作为页面主要内容的错误状态
 * 
 * @example
 * ```tsx
 * <ErrorPage 
 *   title="加载失败" 
 *   message="无法获取数据，请稍后重试" 
 *   error={error} 
 *   onRetry={() => refetch()} 
 * />
 * ```
 */
export function ErrorPage(props: ErrorDisplayProps) {
  return (
    <div className="flex items-center justify-center min-h-[calc(100vh-8rem)]">
      <ErrorDisplay
        {...props}
        showStack={props.showStack ?? process.env.NODE_ENV === 'development'}
      />
    </div>
  )
}