feat: expose plugin data storage bridge

frontend/src/lib/plugin-host/VerstakPluginAPI.js

@@ -232,6 +232,31 @@ export function createPluginAPI(pluginId) {
       }
     },
 
+    storage: {
+      data: {
+        read: function(name) {
+          assertActive('storage.data.read(' + name + ')');
+          if (!name) {
+            throw new Error('storage.data.read requires a name');
+          }
+          return callBackend(pluginId, 'storage.data.read(' + name + ')', function() {
+            return App.ReadPluginDataJSON(pluginId, name);
+          }).then(function(data) {
+            return data || {};
+          });
+        },
+        write: function(name, data) {
+          assertActive('storage.data.write(' + name + ')');
+          if (!name) {
+            throw new Error('storage.data.write requires a name');
+          }
+          return callBackendErrorString(pluginId, 'storage.data.write(' + name + ')', function() {
+            return App.WritePluginDataJSON(pluginId, name, data || {});
+          });
+        }
+      }
+    },
+
     files: {
       list: function(relativeDir) {
         assertActive('files.list');

frontend/src/lib/test/wails-mock.js

@@ -216,6 +216,7 @@
   var pluginSettings = {
     'verstak.platform-test': { savedText: 'initial value' }
   };
+  var pluginData = {};
   var vaultFiles = makeDefaultVaultFiles();
   var externalOpens = [];
   var trashEntries = [];
@@ -1120,8 +1121,15 @@
     },
     ReadPluginSetting: function () { return Promise.resolve(null); },
     WritePluginSetting: function () { return Promise.resolve(null); },
-    ReadPluginDataJSON: function () { return Promise.resolve({}); },
-    WritePluginDataJSON: function () { return Promise.resolve(null); },
+    ReadPluginDataJSON: function (pluginId, name) {
+      var data = (pluginData[pluginId] && pluginData[pluginId][name]) || {};
+      return Promise.resolve([Object.assign({}, data), '']);
+    },
+    WritePluginDataJSON: function (pluginId, name, data) {
+      pluginData[pluginId] = pluginData[pluginId] || {};
+      pluginData[pluginId][name] = Object.assign({}, data || {});
+      return Promise.resolve('');
+    },
     OpenWorkbenchResource: function (pluginId, request) {
       return openWorkbenchResource(pluginId, request || {}, '');
     },