fix(apps.helpers): user can install app which has no data directory

src/server/services/apps/apps.helpers.ts

@@ -255,6 +255,11 @@ const renderTemplate = (template: string, envMap: Map<string, string>) => {
 export const copyDataDir = async (id: string) => {
   const envMap = getEnvMap(id);
 
+  const appDataDirExists = (await fs.promises.lstat(`/runtipi/apps/${id}/data`).catch(() => false)) as fs.Stats;
+  if (!appDataDirExists || !appDataDirExists.isDirectory()) {
+    return;
+  }
+
   const dataDir = await fs.promises.readdir(`/runtipi/apps/${id}/data`);
 
   const processFile = async (file: string) => {

src/server/services/apps/apps.service.test.ts

@@ -259,6 +259,7 @@ describe('Install app', () => {
   it('should copy and replace env variables in deeply nested .templates files in data folder', async () => {
     // arrange
     const appConfig = createAppConfig({ form_fields: [{ env_variable: 'TEST', type: 'text', label: 'test', required: true }] });
+    await fs.promises.writeFile(`/runtipi/apps/${appConfig.id}/data/test.txt.template`, 'test {{TEST}}');
     await fs.promises.mkdir(`/runtipi/apps/${appConfig.id}/data/test`);
     await fs.promises.mkdir(`/runtipi/apps/${appConfig.id}/data/test/test`);
     await fs.promises.writeFile(`/runtipi/apps/${appConfig.id}/data/test/test/test.txt.template`, 'test {{TEST}}');