fix: reorganization of files and folders

src/api/guards/instance.guard.ts

@@ -0,0 +1,74 @@
+import { NextFunction, Request, Response } from 'express';
+import { existsSync } from 'fs';
+import { join } from 'path';
+
+import { configService, Database, Redis } from '../../config/env.config';
+import { INSTANCE_DIR } from '../../config/path.config';
+import {
+  BadRequestException,
+  ForbiddenException,
+  InternalServerErrorException,
+  NotFoundException,
+} from '../../exceptions';
+import { dbserver } from '../../libs/db.connect';
+import { InstanceDto } from '../dto/instance.dto';
+import { cache, waMonitor } from '../server.module';
+
+async function getInstance(instanceName: string) {
+  try {
+    const db = configService.get<Database>('DATABASE');
+    const redisConf = configService.get<Redis>('REDIS');
+
+    const exists = !!waMonitor.waInstances[instanceName];
+
+    if (redisConf.ENABLED) {
+      const keyExists = await cache.keyExists();
+      return exists || keyExists;
+    }
+
+    if (db.ENABLED) {
+      const collection = dbserver
+        .getClient()
+        .db(db.CONNECTION.DB_PREFIX_NAME + '-instances')
+        .collection(instanceName);
+      return exists || (await collection.find({}).toArray()).length > 0;
+    }
+
+    return exists || existsSync(join(INSTANCE_DIR, instanceName));
+  } catch (error) {
+    throw new InternalServerErrorException(error?.toString());
+  }
+}
+
+export async function instanceExistsGuard(req: Request, _: Response, next: NextFunction) {
+  if (req.originalUrl.includes('/instance/create') || req.originalUrl.includes('/instance/fetchInstances')) {
+    return next();
+  }
+
+  const param = req.params as unknown as InstanceDto;
+  if (!param?.instanceName) {
+    throw new BadRequestException('"instanceName" not provided.');
+  }
+
+  if (!(await getInstance(param.instanceName))) {
+    throw new NotFoundException(`The "${param.instanceName}" instance does not exist`);
+  }
+
+  next();
+}
+
+export async function instanceLoggedGuard(req: Request, _: Response, next: NextFunction) {
+  if (req.originalUrl.includes('/instance/create')) {
+    const instance = req.body as InstanceDto;
+    if (await getInstance(instance.instanceName)) {
+      throw new ForbiddenException(`This name "${instance.instanceName}" is already in use.`);
+    }
+
+    if (waMonitor.waInstances[instance.instanceName]) {
+      waMonitor.waInstances[instance.instanceName]?.removeRabbitmqQueues();
+      delete waMonitor.waInstances[instance.instanceName];
+    }
+  }
+
+  next();
+}