import type { Task } from "@mosaic/shared";
import { TaskStatus, TaskPriority } from "@mosaic/shared";
import { formatDate, isPastTarget, isApproachingTarget } from "@/lib/utils/date-format";

interface TaskItemProps {
  task: Task;
}

const statusIcons: Record<TaskStatus, string> = {
  [TaskStatus.NOT_STARTED]: "⚪",
  [TaskStatus.IN_PROGRESS]: "🟢",
  [TaskStatus.PAUSED]: "⏸️",
  [TaskStatus.COMPLETED]: "✅",
  [TaskStatus.ARCHIVED]: "💤",
};

const priorityLabels: Record<TaskPriority, string> = {
  [TaskPriority.HIGH]: "High priority",
  [TaskPriority.MEDIUM]: "Medium priority",
  [TaskPriority.LOW]: "Low priority",
};

export function TaskItem({ task }: TaskItemProps) {
  const statusIcon = statusIcons[task.status];
  const priorityLabel = priorityLabels[task.priority];

  // PDA-friendly date status
  let dateStatus = "";
  if (task.dueDate) {
    if (isPastTarget(task.dueDate)) {
      dateStatus = "Target passed";
    } else if (isApproachingTarget(task.dueDate)) {
      dateStatus = "Approaching target";
    }
  }

  return (
    <div className="bg-white p-4 rounded-lg shadow-sm border border-gray-200 hover:shadow-md transition-shadow">
      <div className="flex items-start gap-3">
        <span className="text-xl flex-shrink-0" aria-label={`Status: ${task.status}`}>
          {statusIcon}
        </span>
        <div className="flex-1 min-w-0">
          <h3 className="font-semibold text-gray-900 mb-1">{task.title}</h3>
          {task.description && (
            <p className="text-sm text-gray-600 mb-2">{task.description}</p>
          )}
          <div className="flex flex-wrap items-center gap-2 text-xs">
            {task.priority && (
              <span className="px-2 py-1 bg-blue-100 text-blue-700 rounded-full">
                {priorityLabel}
              </span>
            )}
            {task.dueDate && (
              <span className="text-gray-500">
                {formatDate(task.dueDate)}
              </span>
            )}
            {dateStatus && (
              <span className="px-2 py-1 bg-amber-100 text-amber-700 rounded-full">
                {dateStatus}
              </span>
            )}
          </div>
        </div>
      </div>
    </div>
  );
}
