Devfront 복사 버튼 및 토스트 알림 추가

devfront/src/components/ui/copy-button.tsx

@@ -0,0 +1,54 @@
+import * as React from "react";
+import { Check, Copy } from "lucide-react";
+import { Button, type ButtonProps } from "./button";
+import { cn } from "../../lib/utils";
+
+interface CopyButtonProps extends ButtonProps {
+  value: string;
+  onCopy?: () => void;
+}
+
+export function CopyButton({
+  value,
+  onCopy,
+  className,
+  variant = "secondary",
+  size = "icon",
+  ...props
+}: CopyButtonProps) {
+  const [hasCopied, setHasCopied] = React.useState(false);
+
+  React.useEffect(() => {
+    if (hasCopied) {
+      const timer = setTimeout(() => setHasCopied(false), 1500);
+      return () => clearTimeout(timer);
+    }
+  }, [hasCopied]);
+
+  const copyToClipboard = async () => {
+    try {
+      await navigator.clipboard.writeText(value);
+      setHasCopied(true);
+      if (onCopy) onCopy();
+    } catch (err) {
+      console.error("Failed to copy text: ", err);
+    }
+  };
+
+  return (
+    <Button
+      size={size}
+      variant={variant}
+      className={cn("relative z-10", className)}
+      onClick={copyToClipboard}
+      {...props}
+    >
+      <span className="sr-only">Copy</span>
+      {hasCopied ? (
+        <Check className="h-4 w-4 text-emerald-500 transition-all scale-110" />
+      ) : (
+        <Copy className="h-4 w-4 transition-all" />
+      )}
+    </Button>
+  );
+}