Add PasswordForDownload component for secure file access with password protection

Frontend/src/components/PasswordForDownlaod.jsx

@@ -0,0 +1,94 @@
+import { useState } from "react";
+import PropTypes from "prop-types";
+
+const API_URL = import.meta.env.VITE_API_URL;
+
+const PasswordForDownload = ({ filename, onDownload, onClose }) => {
+  const [password, setPassword] = useState("");
+  const [error, setError] = useState("");
+  const [loading, setLoading] = useState(false);
+
+  const handleDownload = async () => {
+    if (!password) {
+      setError("Password is required");
+      return;
+    }
+    setLoading(true);
+    setError("");
+    try {
+      const response = await fetch(`${API_URL}/api/files/download`, {
+        method: "POST",
+        headers: {
+          "Content-Type": "application/json",
+          Authorization: `Bearer ${localStorage.getItem("token")}`,
+        },
+        body: JSON.stringify({ filename, password }),
+      });
+
+      if (!response.ok) {
+        const msg = await response.text();
+        throw new Error(msg);
+      }
+
+      const blob = await response.blob();
+      const url = window.URL.createObjectURL(blob);
+      const a = document.createElement("a");
+      a.href = url;
+      a.download = filename;
+      document.body.appendChild(a);
+      a.click();
+      a.remove();
+      window.URL.revokeObjectURL(url);
+
+      onDownload();
+      onClose();
+    } catch (err) {
+      console.error(err);
+      setError(`Download failed: ${err.message}`);
+    } finally {
+      setLoading(false);
+    }
+  };
+
+  return (
+    <div className="fixed inset-0 bg-black bg-opacity-50 flex items-center justify-center">
+      <div className="bg-white p-6 rounded-lg w-80">
+        <h3 className="text-lg font-semibold mb-4">Enter Password</h3>
+        <input
+          type="password"
+          className="w-full border border-gray-300 rounded px-3 py-2 mb-2 focus:outline-none focus:ring-2 focus:ring-blue-500"
+          placeholder="Password"
+          value={password}
+          onChange={(e) => setPassword(e.target.value)}
+        />
+        {error && <p className="text-red-500 text-sm mb-2">{error}</p>}
+        <div className="flex justify-end space-x-2">
+          <button
+            onClick={onClose}
+            disabled={loading}
+            className="px-4 py-2 bg-gray-200 rounded hover:bg-gray-300"
+          >
+            Cancel
+          </button>
+          <button
+            onClick={handleDownload}
+            disabled={loading}
+            className={`px-4 py-2 text-white rounded ${
+              loading ? "bg-gray-400" : "bg-blue-600 hover:bg-blue-700"
+            }`}
+          >
+            {loading ? "Downloading..." : "Download"}
+          </button>
+        </div>
+      </div>
+    </div>
+  );
+};
+
+PasswordForDownload.propTypes = {
+  filename: PropTypes.string.isRequired,
+  onDownload: PropTypes.func.isRequired,
+  onClose: PropTypes.func.isRequired,
+};
+
+export default PasswordForDownload;