Provide a platform override option during web based import (#94)

gaseous-server/wwwroot/pages/dialogs/upload.html

@@ -12,9 +12,20 @@
 <div>
     <div id="upload_target" class="dropzone"></div>
 </div>
+<table style="width: 100%;">
+    <tr>
+        <th style="width: 40%;">
+            Override automatic platform detection:
+        </th>
+        <td style="width: 60%;">
+            <select id="upload_platformoverride" style="width: 100%;"></select>
+        </td>
+    </tr>
+</table>
 
 <script type="text/javascript">
     document.getElementById('modal-heading').innerHTML = "Upload";
+    document.getElementById('upload_platformoverride').innerHTML = "<option value='0' selected='selected'>Automatic Platform</option>";
 
     var myDropzone = new Dropzone("div#upload_target", {
         url: "/api/v1/Roms",
@@ -69,4 +80,51 @@
         subModalContent.innerHTML = "";
         subModalVariables = null;
     }
+
+    $('#upload_platformoverride').select2({
+        minimumInputLength: 3,
+        ajax: {
+            url: '/api/v1/Search/Platform',
+            data: function (params) {
+                var query = {
+                    SearchString: params.term
+                }
+
+                // Query parameters will be ?SearchString=[term]
+                return query;
+            },
+            processResults: function (data) {
+                var arr = [];
+
+                // insert automatic detection item
+                arr.push({
+                    id: 0,
+                    text: "Automatic Platform"
+                });
+
+                for (var i = 0; i < data.length; i++) {
+                    arr.push({
+                        id: data[i].id,
+                        text: data[i].name
+                    });
+                }
+
+                return {
+                    results: arr
+                };
+
+            }
+        }
+    });
+
+    $('#upload_platformoverride').on('select2:select', function (e) {
+        var platformOverride = $('#upload_platformoverride').select2('data');
+        var queryString = '';
+        if (Number(platformOverride[0].id) != 0) {
+            queryString = "?OverridePlatformId=" + platformOverride[0].id;
+        }
+        console.log(queryString);
+
+        myDropzone.options.url = "/api/v1/Roms" + queryString;
+    });
 </script>