"use client";

import { RiFileAddLine } from "@remixicon/react";
import { useQueryClient } from "@tanstack/react-query";
import { useEffect } from "react";
import {
	transactionAttachmentsQueryKey,
	useTransactionAttachments,
} from "@/features/transactions/hooks/use-transaction-attachments";
import { Button } from "@/shared/components/ui/button";
import { AttachmentItem } from "./attachment-item";
import { AttachmentUpload } from "./attachment-upload";

interface AttachmentSectionProps {
	transactionId: string;
	readonly?: boolean;
	onLoaded?: (count: number) => void;
	pendingDetachIds?: string[];
	onPendingDetach?: (attachmentId: string) => void;
	onUndoPendingDetach?: (attachmentId: string) => void;
	pendingUploadFiles?: File[];
	onPendingUpload?: (file: File) => void;
	onCancelPendingUpload?: (file: File) => void;
	maxSizeMb?: number;
}

export function AttachmentSection({
	transactionId,
	readonly = false,
	onLoaded,
	pendingDetachIds,
	onPendingDetach,
	onUndoPendingDetach,
	pendingUploadFiles,
	onPendingUpload,
	onCancelPendingUpload,
	maxSizeMb,
}: AttachmentSectionProps) {
	const queryClient = useQueryClient();
	const {
		data: items = [],
		isLoading,
		isError,
	} = useTransactionAttachments(transactionId);

	useEffect(() => {
		onLoaded?.(items.length);
	}, [items.length, onLoaded]);

	const invalidateAttachments = () => {
		void queryClient.invalidateQueries({
			queryKey: transactionAttachmentsQueryKey(transactionId),
		});
	};

	if (isLoading) {
		return <p className="text-xs text-muted-foreground">Carregando...</p>;
	}

	if (isError) {
		return (
			<p className="text-xs text-muted-foreground">
				Não foi possível carregar os anexos.
			</p>
		);
	}

	const hasPendingUploads = (pendingUploadFiles?.length ?? 0) > 0;

	return (
		<div className="min-w-0 space-y-2 overflow-hidden">
			{items.length === 0 && !hasPendingUploads && readonly && (
				<p className="text-xs text-muted-foreground">Nenhum anexo.</p>
			)}

			{(items.length > 0 || hasPendingUploads) && (
				<div className="min-w-0 space-y-1.5">
					{items.map((item) => (
						<AttachmentItem
							key={item.attachmentId}
							attachmentId={item.attachmentId}
							transactionId={transactionId}
							fileName={item.fileName}
							fileSize={item.fileSize}
							mimeType={item.mimeType}
							url={item.url}
							onDeleted={invalidateAttachments}
							readonly={readonly}
							isPendingDelete={pendingDetachIds?.includes(item.attachmentId)}
							onPendingDelete={onPendingDetach}
							onUndoPendingDelete={onUndoPendingDetach}
						/>
					))}

					{pendingUploadFiles?.map((file) => (
						<div
							key={`${file.name}-${file.size}`}
							className="flex min-w-0 items-center gap-2 overflow-hidden rounded-md border border-dashed px-3 py-2 text-sm opacity-60"
						>
							<RiFileAddLine className="size-4 shrink-0 text-muted-foreground" />
							<div className="flex-1 min-w-0">
								<p className="truncate font-medium">{file.name}</p>
								<p className="text-xs text-muted-foreground">
									Será adicionado ao salvar
								</p>
							</div>
							<Button
								type="button"
								variant="ghost"
								size="sm"
								className="shrink-0 text-xs h-7 px-2"
								onClick={() => onCancelPendingUpload?.(file)}
							>
								Cancelar
							</Button>
						</div>
					))}
				</div>
			)}

			{!readonly && (
				<AttachmentUpload
					transactionId={transactionId}
					onUploaded={invalidateAttachments}
					onPendingUpload={onPendingUpload}
					maxSizeMb={maxSizeMb}
				/>
			)}
		</div>
	);
}