import * as React from "react";
import { cva, type VariantProps } from "class-variance-authority";
import { AlertCircle, CheckCircle, Info, XCircle } from "lucide-react";
import { cn } from "@/lib/utils";

const alertVariants = cva(
  "relative w-full rounded-lg border p-4 [&>svg~*]:pl-7 [&>svg+div]:translate-y-[-3px] [&>svg]:absolute [&>svg]:left-4 [&>svg]:top-4 [&>svg]:text-foreground",
  {
    variants: {
      variant: {
        default: "bg-background text-foreground",
        destructive:
          "border-destructive/50 text-destructive dark:border-destructive [&>svg]:text-destructive",
        success:
          "border-success/50 text-success dark:border-success [&>svg]:text-success bg-success/10",
        warning:
          "border-warning/50 text-warning dark:border-warning [&>svg]:text-warning bg-warning/10",
        info:
          "border-info/50 text-info dark:border-info [&>svg]:text-info bg-info/10",
      },
    },
    defaultVariants: {
      variant: "default",
    },
  }
);

const Alert = React.forwardRef<
  HTMLDivElement,
  React.HTMLAttributes<HTMLDivElement> & VariantProps<typeof alertVariants>
>(({ className, variant, ...props }, ref) => (
  <div
    ref={ref}
    role="alert"
    className={cn(alertVariants({ variant }), className)}
    {...props}
  />
));
Alert.displayName = "Alert";

const AlertTitle = React.forwardRef<
  HTMLParagraphElement,
  React.HTMLAttributes<HTMLHeadingElement>
>(({ className, ...props }, ref) => (
  <h5
    ref={ref}
    className={cn("mb-1 font-medium leading-none tracking-tight", className)}
    {...props}
  />
));
AlertTitle.displayName = "AlertTitle";

const AlertDescription = React.forwardRef<
  HTMLParagraphElement,
  React.HTMLAttributes<HTMLParagraphElement>
>(({ className, ...props }, ref) => (
  <div
    ref={ref}
    className={cn("text-sm [&_p]:leading-relaxed", className)}
    {...props}
  />
));
AlertDescription.displayName = "AlertDescription";

// Convenience components with icons
interface AlertWithIconProps extends React.HTMLAttributes<HTMLDivElement> {
  title?: string;
  children: React.ReactNode;
}

export function AlertError({ title, children, className, ...props }: AlertWithIconProps) {
  return (
    <Alert variant="destructive" className={className} {...props}>
      <XCircle className="h-4 w-4" />
      {title && <AlertTitle>{title}</AlertTitle>}
      <AlertDescription>{children}</AlertDescription>
    </Alert>
  );
}

export function AlertSuccess({ title, children, className, ...props }: AlertWithIconProps) {
  return (
    <Alert variant="success" className={className} {...props}>
      <CheckCircle className="h-4 w-4" />
      {title && <AlertTitle>{title}</AlertTitle>}
      <AlertDescription>{children}</AlertDescription>
    </Alert>
  );
}

export function AlertWarning({ title, children, className, ...props }: AlertWithIconProps) {
  return (
    <Alert variant="warning" className={className} {...props}>
      <AlertCircle className="h-4 w-4" />
      {title && <AlertTitle>{title}</AlertTitle>}
      <AlertDescription>{children}</AlertDescription>
    </Alert>
  );
}

export function AlertInfo({ title, children, className, ...props }: AlertWithIconProps) {
  return (
    <Alert variant="info" className={className} {...props}>
      <Info className="h-4 w-4" />
      {title && <AlertTitle>{title}</AlertTitle>}
      <AlertDescription>{children}</AlertDescription>
    </Alert>
  );
}

export { Alert, AlertTitle, AlertDescription };