feat: redirect to another link if file is not supported

file_display.go

@@ -29,7 +29,7 @@ var extensions = map[string]string{
 	".log": "text", ".txt": "text", ".csv": "text",
 	".json": "text", ".env": "text", ".sum": "text",
 	".gitignore": "text", ".dockerfile": "text", ".Makefile": "text",
-	".rst": "text",
+	".rst": "text", ".el": "text",
 }
 
 func DisplayFile(app *Application, file string, w http.ResponseWriter) {
@@ -59,5 +59,5 @@ func getType(file string) string {
 	if fileType, exists := extensions[extension]; exists {
 		return fileType
 	}
-	return "text"
+	return "unknown"
 }

templates/files.html

@@ -187,6 +187,11 @@
             border-radius: 10px;
             border: 3px solid #2e2e2e;
         }
+
+        a {
+            color: #0288d1;
+            text-decoration: none;
+        }
     </style>
 </head>
 
@@ -204,6 +209,11 @@
             <source src="{{.Name}}" type="video/mp4" />
             Your browser does not support the video tag.
         </video>
+        {{else}}
+        <p>
+            Couldn't detect file from extension, visit
+            <a href="http://{{.Path}}">this link</a> to see/download your file.
+        </p>
         {{end}}
     </div>
     <footer>file uploaded in {{.TimeUploaded}}</footer>