add customThemeSummaries to the response of /_api/v3/customize-setting/theme

packages/app/src/interfaces/customize.ts

@@ -1,7 +1,10 @@
+import { GrowiCustomThemeSummary } from '@growi/core';
+
 export type IResLayoutSetting = {
   isContainerFluid: boolean,
 };
 
 export type IResGrowiTheme = {
-  theme: string,
+  currentTheme: string,
+  customThemeSummaries: GrowiCustomThemeSummary[],
 }

packages/app/src/server/routes/apiv3/customize-setting.js

@@ -1,8 +1,10 @@
 /* eslint-disable no-unused-vars */
 
 import { ErrorV3 } from '@growi/core';
+import mongoose from 'mongoose';
 
 import { SupportedAction } from '~/interfaces/activity';
+import { GrowiPluginResourceType } from '~/interfaces/plugin';
 import { AttachmentType } from '~/server/interfaces/attachment';
 import loggerFactory from '~/utils/logger';
 
@@ -271,8 +273,17 @@ module.exports = (crowi) => {
   router.get('/theme', loginRequiredStrictly, adminRequired, async(req, res) => {
 
     try {
-      const theme = await crowi.configManager.getConfig('crowi', 'customize:theme');
-      return res.apiv3({ theme });
+      const currentTheme = await crowi.configManager.getConfig('crowi', 'customize:theme');
+
+      // retrieve plugin manifests
+      const GrowiPluginModel = mongoose.model('GrowiPlugin');
+      const themePlugins = await GrowiPluginModel.findEnabledPluginsIncludingAnyTypes([GrowiPluginResourceType.Theme]);
+
+      const customThemeSummaries = themePlugins
+        .map(themePlugin => themePlugin.meta.themes)
+        .flat();
+
+      return res.apiv3({ currentTheme, customThemeSummaries });
     }
     catch (err) {
       const msg = 'Error occurred in getting theme';