feat(nest.js): add preview mode flag

docs/tiny-pro-backend-dev-guideline.md

@@ -43,6 +43,8 @@ PAGINATION_LIMIT = 10
 REFRESH_TOKEN_TTL = 604800000
 # 至多有多少个设备可以同时在线
 DEVICE_LIMIT=1
+# 是否启用演示模式
+PREVIEW_MODE=true
 ```
 
 ### 开发前检查清单

template/nestJs/.env.example

@@ -17,3 +17,5 @@ MOCK_REGEX = '/mock'
 REFRESH_TOKEN_TTL = 604800000
 # 至多有多少个设备可以同时在线
 DEVICE_LIMIT=1
+# 是否启用演示模式
+PREVIEW_MODE=true

template/nestJs/src/app.module.ts

@@ -37,7 +37,7 @@ import { HealthCheckController } from './health-check.controller';
 import { ApplicationModule } from './application/application.module';
 import { ApplicationService } from './application/application.service';
 import { applicationData } from './application/init/data';
-import { CONFIG_SCHEMA } from './config-schema';
+import { CONFIG_SCHEMA, Configure } from './config-schema';
 
 @Module({
   imports: [
@@ -89,14 +89,21 @@ export class AppModule implements OnModuleInit {
     private menu: MenuService,
     private lang: I18LangService,
     private i18: I18Service,
-    private application: ApplicationService
+    private application: ApplicationService,
+    private cfg: ConfigService<Configure>
   ) {}
   async onModuleInit() {
     const ROOT = __dirname;
     const data = join(ROOT, 'data');
     if (!existsSync(data)) {
       mkdirSync(data);
     }
+    const IS_PREVIEW_MOD = this.cfg.get('PREVIEW_MODE');
+    if (IS_PREVIEW_MOD) {
+      Logger.warn('You are currently in demonstration mode. All additions, deletions, and modifications request will be rejected');
+      Logger.warn('If you want to disable the demo mode, please set the `PREVIEW_MODE` environment variable to `false`')
+      Logger.warn('Alternatively, you can create an `.env` file and set `PREVIEV_MODE` to `false`')
+    }
     const LOCK_FILE = join(data, 'lock');
     if (existsSync(LOCK_FILE)) {
       Logger.warn(

template/nestJs/src/config-schema.ts

@@ -19,6 +19,7 @@ export type Configure = {
   MOCK_REGEX:string;
   REFRESH_TOKEN_TTL:number;
   DEVICE_LIMIT:number;
+  PREVIEW_MODE: boolean;
 }
 
 export const CONFIG_SCHEMA = Joi.object<Configure>({
@@ -39,5 +40,6 @@ export const CONFIG_SCHEMA = Joi.object<Configure>({
   GLOBAL_PREFIX: Joi.string(),
   MOCK_REGEX: Joi.string(),
   REFRESH_TOKEN_TTL: Joi.number(),
-  DEVICE_LIMIT: Joi.number()
+  DEVICE_LIMIT: Joi.number(),
+  PREVIEW_MODE: Joi.bool().default(true)
 })

template/nestJs/src/public/reject.guard.ts

@@ -8,11 +8,20 @@ import {
 import { Reflector } from '@nestjs/core';
 import { I18nTranslations } from '../.generate/i18n.generated';
 import { I18nContext } from 'nestjs-i18n';
+import { ConfigService } from '@nestjs/config';
+import { Configure } from '../config-schema';
 
 @Injectable()
 export class RejectRequestGuard implements CanActivate {
-  constructor(private readonly reflector: Reflector) {}
+  constructor(
+    private readonly reflector: Reflector,
+    private readonly cfg: ConfigService<Configure>
+  ) {
+  }
   async canActivate(ctx: ExecutionContext): Promise<boolean> {
+    if (!this.cfg.get('PREVIEW_MODE')) {
+      return true;
+    }
     const i18n = I18nContext.current<I18nTranslations>();
     const rejectRequest = this.reflector.getAllAndOverride('reject', [
       ctx.getHandler(),