"use client";

import Link from "next/link";
import { ChevronRightIcon } from "@heroicons/react/24/outline";
import { cn } from "@/lib/utils";
import { Button } from "@/components/atoms/button";

export type TaskTone = "critical" | "warning" | "info" | "neutral";

export interface TaskCardProps {
  /** Unique identifier for the task */
  id: string;
  /** Icon component to display */
  icon: React.ComponentType<React.SVGProps<SVGSVGElement>>;
  /** Task title */
  title: string;
  /** Task description */
  description: string;
  /** Action button label */
  actionLabel: string;
  /** Link destination for the card click (navigates to detail page) */
  detailHref?: string;
  /** Click handler for the action button */
  onAction?: () => void;
  /** Visual tone based on priority */
  tone?: TaskTone;
  /** Loading state for the action button */
  isLoading?: boolean;
  /** Loading text for the action button */
  loadingText?: string;
  /** Additional className */
  className?: string;
}

const toneStyles: Record<
  TaskTone,
  {
    card: string;
    border: string;
    iconBg: string;
    iconColor: string;
    buttonVariant: "default" | "outline";
  }
> = {
  critical: {
    card: "bg-error/5 hover:bg-error/10",
    border: "border-l-error",
    iconBg: "bg-error/15",
    iconColor: "text-error",
    buttonVariant: "default",
  },
  warning: {
    card: "bg-warning/5 hover:bg-warning/10",
    border: "border-l-warning",
    iconBg: "bg-warning/15",
    iconColor: "text-warning",
    buttonVariant: "outline",
  },
  info: {
    card: "bg-info/5 hover:bg-info/10",
    border: "border-l-info",
    iconBg: "bg-info/15",
    iconColor: "text-info",
    buttonVariant: "outline",
  },
  neutral: {
    card: "bg-primary/5 hover:bg-primary/10",
    border: "border-l-primary",
    iconBg: "bg-primary/15",
    iconColor: "text-primary",
    buttonVariant: "outline",
  },
};

export function TaskCard({
  id,
  icon: Icon,
  title,
  description,
  actionLabel,
  detailHref,
  onAction,
  tone = "neutral",
  isLoading = false,
  loadingText,
  className,
}: TaskCardProps) {
  const styles = toneStyles[tone];

  const cardContent = (
    <>
      {/* Icon - Larger for prominence */}
      <div
        className={cn(
          "flex-shrink-0 h-12 w-12 rounded-xl flex items-center justify-center",
          styles.iconBg
        )}
        aria-hidden="true"
      >
        <Icon className={cn("h-6 w-6", styles.iconColor)} />
      </div>

      {/* Content - Larger text */}
      <div className="flex-1 min-w-0">
        <h3 className="text-base font-semibold text-foreground">{title}</h3>
        <p className="text-sm text-muted-foreground mt-1 line-clamp-2">{description}</p>
      </div>
    </>
  );

  const actionButton = (
    <Button
      variant={styles.buttonVariant}
      size="sm"
      onClick={e => {
        e.preventDefault();
        e.stopPropagation();
        onAction?.();
      }}
      isLoading={isLoading}
      loadingText={loadingText}
      rightIcon={!isLoading ? <ChevronRightIcon className="h-4 w-4" /> : undefined}
      className="shrink-0"
    >
      {actionLabel}
    </Button>
  );

  const cardClasses = cn(
    "group flex items-center gap-5 p-5 rounded-2xl border border-border/60",
    "border-l-4",
    styles.border,
    styles.card,
    "transition-all duration-[var(--cp-duration-normal)]",
    "shadow-[var(--cp-shadow-1)] hover:shadow-[var(--cp-shadow-3)]",
    detailHref && "cursor-pointer",
    className
  );

  if (detailHref) {
    return (
      <Link href={detailHref} data-task-id={id} className={cn(cardClasses, "block")}>
        <div className="flex items-center gap-5 w-full">
          {cardContent}
          {/* Action button */}
          <div className="shrink-0">{actionButton}</div>
        </div>
      </Link>
    );
  }

  return (
    <div data-task-id={id} className={cardClasses}>
      {cardContent}
      {/* Action button */}
      <div className="shrink-0">{actionButton}</div>
    </div>
  );
}

/**
 * Loading skeleton for TaskCard
 */
export function TaskCardSkeleton() {
  return (
    <div className="flex items-center gap-5 p-5 rounded-2xl bg-muted/30 border border-border/60 border-l-4 border-l-muted animate-pulse">
      <div className="flex-shrink-0 h-12 w-12 rounded-xl bg-muted" />
      <div className="flex-1 min-w-0 space-y-2">
        <div className="h-5 bg-muted rounded w-1/3" />
        <div className="h-4 bg-muted rounded w-2/3" />
      </div>
      <div className="h-9 w-24 bg-muted rounded-lg" />
    </div>
  );
}