import { Task } from "@/lib/schema/tasks"
import { Checkbox } from "@/components/ui/checkbox"
import { format } from "date-fns"
import { useState, useRef, useEffect } from "react"

interface TaskItemProps {
	task: Task
	onUpdateTask: (taskId: string, updates: Partial<Task>) => void
	onDeleteTask: (taskId: string) => void
}

export const TaskItem: React.FC<TaskItemProps> = ({ task, onUpdateTask, onDeleteTask }) => {
	const [isEditing, setIsEditing] = useState(false)
	const [editedTitle, setEditedTitle] = useState(task.title)
	const inputRef = useRef<HTMLInputElement>(null)

	useEffect(() => {
		if (isEditing && inputRef.current) {
			inputRef.current.focus()
		}
	}, [isEditing])

	const statusChange = (checked: boolean) => {
		if (checked) {
			onDeleteTask(task.id)
		} else {
			onUpdateTask(task.id, { status: "todo" })
		}
	}

	const clickTitle = () => {
		setIsEditing(true)
	}

	const titleChange = (e: React.ChangeEvent<HTMLInputElement>) => {
		setEditedTitle(e.target.value)
	}

	const titleBlur = () => {
		setIsEditing(false)
		if (editedTitle.trim() !== task.title) {
			onUpdateTask(task.id, { title: editedTitle.trim() })
		}
	}

	const handleKeyDown = (e: React.KeyboardEvent<HTMLInputElement>) => {
		if (e.key === "Enter") {
			titleBlur()
		}
	}

	const formattedDate = task.dueDate ? format(new Date(task.dueDate), "EEE, MMMM do, yyyy") : "No due date"

	return (
		<li className="bg-result transitiion-opacity flex items-center justify-between rounded-lg p-2 px-3 hover:opacity-60">
			<div className="flex flex-grow flex-row items-center gap-3">
				<Checkbox checked={task.status === "done"} onCheckedChange={statusChange} />
				{isEditing ? (
					<input
						ref={inputRef}
						value={editedTitle}
						onChange={titleChange}
						onBlur={titleBlur}
						onKeyDown={handleKeyDown}
						className="flex-grow border-none bg-transparent p-0 shadow-none outline-none focus:outline-none focus-visible:ring-0 focus-visible:ring-offset-0"
					/>
				) : (
					<p
						className={task.status === "done" ? "text-foreground flex-grow line-through" : "flex-grow"}
						onClick={clickTitle}
					>
						{task.title}
					</p>
				)}
			</div>
			<span className="text-muted-foreground text-xs">{formattedDate}</span>
		</li>
	)
}