add getMarkdown route

apps/app/src/features/templates/server/routes/apiv3/index.ts

@@ -1,6 +1,6 @@
-import { scanAllTemplateStatus } from '@growi/pluginkit/dist/server/utils/v4';
+import { scanAllTemplateStatus, getMarkdown } from '@growi/pluginkit/dist/server/utils/v4';
 import express from 'express';
-import { query } from 'express-validator';
+import { param, query } from 'express-validator';
 
 import { apiV3FormValidator } from '~/server/middlewares/apiv3-form-validator';
 import { ApiV3Response } from '~/server/routes/apiv3/interfaces/apiv3-response';
@@ -15,6 +15,12 @@ const validator = {
   list: [
     query('includeInvalidTemplates').optional().isBoolean(),
   ],
+  get: [
+    param('organizationName').isString(),
+    param('reposName').isString(),
+    param('templateId').isString(),
+    param('locale').isString(),
+  ],
 };
 
 module.exports = (crowi) => {
@@ -29,5 +35,16 @@ module.exports = (crowi) => {
     return res.apiv3(status);
   });
 
+  router.get('/:organizationName/:reposName/:templateId/:locale', loginRequiredStrictly, validator.get, apiV3FormValidator, async(req, res: ApiV3Response) => {
+    const {
+      organizationName, reposName, templateId, locale,
+    } = req.params;
+
+    const presetTemplatesRoot = resolveFromRoot('../../node_modules/@growi/preset-templates');
+    const markdown = await getMarkdown(presetTemplatesRoot, templateId, locale);
+
+    return res.apiv3({ markdown });
+  });
+
   return router;
 };

packages/pluginkit/src/server/utils/v4/template.ts

@@ -186,3 +186,14 @@ export const validateTemplatePlugin = async(projectDirRoot: string): Promise<boo
 
   return true;
 };
+
+export const getMarkdown = async(projectDirRoot: string, templateId: string, locale: string): Promise<string> => {
+  const tplDir = path.resolve(projectDirRoot, 'dist', templateId, locale);
+
+  const { isTemplateExists } = await getStats(tplDir);
+
+  if (!isTemplateExists) throw new Error("'template.md does not exist.");
+
+  const markdownPath = path.resolve(tplDir, 'template.md');
+  return fs.readFileSync(markdownPath, { encoding: 'utf-8' });
+};