fix: add unsafe for download reason

Author: rakibansary

src/shared/components/SubmissionManagement/Submission/index.jsx

@@ -38,6 +38,7 @@ export default function Submission(props) {
   } = props;
   const formatDate = date => moment(+new Date(date)).format('MMM DD, YYYY hh:mm A');
   const onDownloadSubmission = onDownload.bind(1, submissionObject.id);
+  const safeForDownloadCheck = safeForDownload(submissionObject.url);
 
   return (
     <tr styleName="submission-row">
@@ -54,7 +55,7 @@ export default function Submission(props) {
       {
         track === COMPETITION_TRACKS.DES && (
           <td styleName="status-col">
-            {!safeForDownload(submissionObject.url) ? 'Malware found in submission' : submissionObject.screening
+            {safeForDownloadCheck !== true ? safeForDownloadCheck : submissionObject.screening
               && (
               <ScreeningStatus
                 screeningObject={submissionObject.screening}
@@ -71,7 +72,7 @@ export default function Submission(props) {
             onClick={() => onDownloadSubmission(submissionObject.id)}
             type="button"
           >
-            { safeForDownload(submissionObject.url) && <DownloadIcon /> }
+            { safeForDownloadCheck === true && <DownloadIcon /> }
           </button>
           { /*
             TODO: At the moment we just fetch downloads from the legacy

src/shared/utils/tc.js

@@ -309,9 +309,22 @@ export function isValidEmail(email) {
  * Test if the file is safe for download. This patch currently checks the location of the submission
  * to determine if the file is infected or not. This is an immedaite patch, and should be updated to
  * check the review scan score for review type virus scan.
+ *
+ * @returns {String|Boolean} true if submission is safe for download,
+ * otherwise string describing reason for not being safe for download
  */
 export function safeForDownload(url) {
-  return url != null && url.toLowerCase().indexOf('submissions-quarantine/') === -1 && url.toLowerCase().indexOf('submissions-dmz/') === -1;
+  if (url == null) return 'Download link unavailable';
+
+  if (url.toLowerCase().indexOf('submissions-quarantine/') !== -1) {
+    return 'Malware found in submission';
+  }
+
+  if (url.toLowerCase().indexOf('submissions-dmz/') === -1) {
+    return 'AV Scan in progress';
+  }
+
+  return true;
 }
 
 export default undefined;