added plugins

plugins/dbgate-plugin-excel/src/backend/index.js

@@ -0,0 +1,26 @@
+const xlsx = require('xlsx');
+const reader = require('./reader');
+const writer = require('./writer');
+
+let dbgateApi;
+
+module.exports = {
+  packageName: 'dbgate-plugin-excel',
+  shellApi: {
+    reader,
+    writer,
+  },
+
+  commands: {
+    analyse: async ({ fileName }) => {
+      const downloadedFile = await dbgateApi.download(fileName);
+      const workbook = xlsx.readFile(downloadedFile, { bookSheets: true });
+      return workbook.SheetNames;
+    },
+  },
+  initialize(dbgateEnv) {
+    dbgateApi = dbgateEnv.dbgateApi;
+    writer.initialize(dbgateEnv);
+    reader.initialize(dbgateEnv);
+  },
+};