Feat/frontend confirm dialog component

frontend/components/ui/confirm-dialog.tsx

@@ -0,0 +1,150 @@
+"use client";
+
+import React, { useEffect, useRef } from "react";
+import { X, Loader2 } from "lucide-react";
+import { Button } from "@/components/ui/button";
+
+interface ConfirmDialogProps {
+	title?: string;
+	message?: React.ReactNode;
+	onConfirm: () => void;
+	onCancel: () => void;
+	loading?: boolean;
+}
+
+export function ConfirmDialog({
+	title = "Confirm",
+	message = "Are you sure?",
+	onConfirm,
+	onCancel,
+	loading = false,
+}: ConfirmDialogProps) {
+	const dialogRef = useRef<HTMLDivElement | null>(null);
+	const previouslyFocused = useRef<HTMLElement | null>(null);
+
+	useEffect(() => {
+		// save previously focused element to restore later
+		previouslyFocused.current = document.activeElement as HTMLElement | null;
+
+		// lock scroll
+		const prevOverflow = document.body.style.overflow;
+		document.body.style.overflow = "hidden";
+
+		// focus first focusable element in dialog
+		const node = dialogRef.current;
+		const focusable = node?.querySelector<HTMLElement>(
+			'button, [href], input, select, textarea, [tabindex]:not([tabindex="-1"])'
+		);
+		if (focusable) focusable.focus();
+
+		const onKeyDown = (e: KeyboardEvent) => {
+			if (e.key === "Escape") {
+				e.preventDefault();
+				onCancel();
+			}
+
+			if (e.key === "Tab") {
+				// simple focus trap
+				const container = dialogRef.current;
+				if (!container) return;
+				const focusableEls = Array.from(
+					container.querySelectorAll<HTMLElement>(
+						'a[href], area[href], input:not([disabled]), select:not([disabled]), textarea:not([disabled]), button:not([disabled]), iframe, object, embed, [tabindex]:not([tabindex="-1"]), [contenteditable]'
+					)
+				).filter((el) => el.offsetWidth || el.offsetHeight || el.getClientRects().length);
+
+				if (focusableEls.length === 0) {
+					e.preventDefault();
+					return;
+				}
+
+				const first = focusableEls[0];
+				const last = focusableEls[focusableEls.length - 1];
+
+				if (!e.shiftKey && document.activeElement === last) {
+					e.preventDefault();
+					first.focus();
+				}
+
+				if (e.shiftKey && document.activeElement === first) {
+					e.preventDefault();
+					last.focus();
+				}
+			}
+		};
+
+		document.addEventListener("keydown", onKeyDown);
+
+		return () => {
+			document.removeEventListener("keydown", onKeyDown);
+			document.body.style.overflow = prevOverflow;
+			// restore focus
+			try {
+				previouslyFocused.current?.focus();
+			} catch (err) {
+				// ignore
+			}
+		};
+	}, [onCancel]);
+
+	return (
+		<div className="fixed inset-0 z-50 flex items-center justify-center p-4">
+			{/* Backdrop */}
+			<div
+				aria-hidden
+				className="absolute inset-0 bg-black/40 backdrop-blur-sm"
+				onClick={onCancel}
+			/>
+
+			{/* Dialog */}
+			<div
+				ref={dialogRef}
+				role="dialog"
+				aria-modal="true"
+				aria-labelledby="confirm-dialog-title"
+				aria-describedby="confirm-dialog-description"
+				tabIndex={-1}
+				className="relative bg-white rounded-2xl shadow-xl w-full max-w-xl mx-auto p-6"
+			>
+				<div className="flex items-start justify-between gap-4">
+					<div className="min-w-0">
+						<h2 id="confirm-dialog-title" className="text-lg font-semibold text-gray-900">
+							{title}
+						</h2>
+						<p id="confirm-dialog-description" className="mt-2 text-sm text-gray-600">
+							{message}
+						</p>
+					</div>
+
+					<button
+						type="button"
+						aria-label="Close dialog"
+						onClick={onCancel}
+						className="text-gray-400 hover:text-gray-600 p-1 rounded-full"
+					>
+						<X size={18} />
+					</button>
+				</div>
+
+				<div className="mt-6 flex items-center justify-end gap-3">
+					<Button variant="outline" onClick={onCancel} className="px-4 py-2">
+						Cancel
+					</Button>
+
+					<Button
+						onClick={onConfirm}
+						disabled={loading}
+						className="px-4 py-2 flex items-center"
+						variant="destructive"
+					>
+						{loading && <Loader2 size={16} className="animate-spin mr-2" />}
+						Confirm
+					</Button>
+				</div>
+			</div>
+		</div>
+	);
+}
+
+export default ConfirmDialog;
+