Added bare minimum functional

.gitignore

@@ -54,3 +54,5 @@ pids
 
 # Diagnostic reports (https://nodejs.org/api/report.html)
 report.[0-9]*.[0-9]*.[0-9]*.[0-9]*.json
+
+config.js

config.example.js

@@ -0,0 +1,5 @@
+const config = {
+  dllPath: 'C:\\Program Files (x86)\\VB\\Voicemeeter\\VoicemeeterRemote64.dll',
+  headerPath: 'C:\\Program Files (x86)\\VB\\Voicemeeter\\VoicemeeterRemote.h',
+};
+module.exports = config;

package-lock.json

@@ -1,11 +1,11 @@
 {
-  "name": "backend",
+  "name": "voicemeeter-remote-backend",
   "version": "0.0.1",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
-      "name": "backend",
+      "name": "voicemeeter-remote-backend",
       "version": "0.0.1",
       "license": "UNLICENSED",
       "dependencies": {
@@ -13,7 +13,8 @@
         "@nestjs/core": "^10.0.0",
         "@nestjs/platform-express": "^10.0.0",
         "reflect-metadata": "^0.2.0",
-        "rxjs": "^7.8.1"
+        "rxjs": "^7.8.1",
+        "voicemeeter-remote-library": "file:../library"
       },
       "devDependencies": {
         "@nestjs/cli": "^10.0.0",
@@ -39,6 +40,17 @@
         "typescript": "^5.1.3"
       }
     },
+    "../library": {
+      "version": "1.0.0",
+      "license": "ISC",
+      "dependencies": {
+        "koffi": "^2.8.11"
+      },
+      "devDependencies": {
+        "ts-node": "^10.9.2",
+        "typescript": "^5.5.2"
+      }
+    },
     "node_modules/@ampproject/remapping": {
       "version": "2.3.0",
       "resolved": "https://registry.npmjs.org/@ampproject/remapping/-/remapping-2.3.0.tgz",
@@ -8258,6 +8270,10 @@
         "node": ">= 0.8"
       }
     },
+    "node_modules/voicemeeter-remote-library": {
+      "resolved": "../library",
+      "link": true
+    },
     "node_modules/walker": {
       "version": "1.0.8",
       "resolved": "https://registry.npmjs.org/walker/-/walker-1.0.8.tgz",

package.json

@@ -24,7 +24,8 @@
     "@nestjs/core": "^10.0.0",
     "@nestjs/platform-express": "^10.0.0",
     "reflect-metadata": "^0.2.0",
-    "rxjs": "^7.8.1"
+    "rxjs": "^7.8.1",
+    "voicemeeter-remote-library": "file:../library"
   },
   "devDependencies": {
     "@nestjs/cli": "^10.0.0",

src/app.controller.ts

@@ -1,12 +1,23 @@
-import { Controller, Get } from '@nestjs/common';
-import { AppService } from './app.service';
+import {
+  Controller,
+  Get,
+  Header,
+  HttpException,
+  HttpStatus,
+  Query,
+} from '@nestjs/common';
+import { AppService, IOType } from './app.service';
 
 @Controller()
 export class AppController {
   constructor(private readonly appService: AppService) {}
 
-  @Get()
-  getHello(): string {
-    return this.appService.getHello();
+  @Get('/type')
+  getType() {
+    return this.appService.getType();
+  }
+  @Get('/io')
+  getIO() {
+    return this.appService.getAvailableIOs();
   }
 }

src/app.module.ts

@@ -1,10 +1,11 @@
 import { Module } from '@nestjs/common';
 import { AppController } from './app.controller';
 import { AppService } from './app.service';
+import { StripController } from './strip.controller';
 
 @Module({
   imports: [],
-  controllers: [AppController],
+  controllers: [AppController, StripController],
   providers: [AppService],
 })
 export class AppModule {}

src/app.service.ts

@@ -1,8 +1,50 @@
-import { Injectable } from '@nestjs/common';
+import {
+  BeforeApplicationShutdown,
+  Injectable,
+  OnApplicationShutdown,
+  OnModuleInit,
+  Query,
+} from '@nestjs/common';
+import * as config from '../config.js';
+import { Control, Strip } from 'voicemeeter-remote-library/dist';
+import { VoicemeeterType } from 'voicemeeter-remote-library/dist/VMR/Control';
+
+export enum IOType {
+  STRIP,
+  BUS,
+}
 
 @Injectable()
-export class AppService {
-  getHello(): string {
-    return 'Hello World!';
+export class AppService implements OnModuleInit {
+  private control = new Control(config.dllPath, config.headerPath);
+  private strips: Strip[];
+  // private buses: Bus[];
+  async onModuleInit() {
+    await this.control.initialize();
+    this.control.login();
+    this.strips = [...Array(this.getAvailableIOs().strips.total).keys()].map(
+      (id) => new Strip(this.control, id),
+    );
+  }
+
+  getType() {
+    return {
+      typeId: this.control.voicemeeterType,
+      type: VoicemeeterType[this.control.voicemeeterType],
+    };
+  }
+  getAvailableIOs() {
+    return {
+      buses: this.control.availableBuses,
+      strips: this.control.availableStrips,
+    };
+  }
+
+  getGain(IOType: IOType, id: number) {
+    return this.strips[id].Gain;
+  }
+
+  setGain(IOType: IOType, id: number, gain: number) {
+    return (this.strips[id].Gain = gain);
   }
 }

src/main.ts

@@ -3,6 +3,7 @@ import { AppModule } from './app.module';
 
 async function bootstrap() {
   const app = await NestFactory.create(AppModule);
+  app.enableShutdownHooks();
   await app.listen(3000);
 }
 bootstrap();

src/strip.controller.ts

@@ -0,0 +1,40 @@
+import {
+  Body,
+  Controller,
+  Get,
+  Header,
+  HostParam,
+  HttpException,
+  HttpStatus,
+  Param,
+  Patch,
+  Post,
+  Query,
+} from '@nestjs/common';
+import { AppService, IOType } from './app.service';
+
+@Controller('/strip/:stripId')
+export class StripController {
+  constructor(private readonly appService: AppService) {}
+  @Get('/gain')
+  getGain(@Param('stripId') stripId: string) {
+    return { gain: this.appService.getGain(IOType.STRIP, +stripId) };
+  }
+  @Patch('/gain')
+  setGain(
+    @Param('stripId') stripId: string,
+    @Body() { gain }: { gain: number },
+  ) {
+    if (gain === undefined)
+      throw new HttpException(
+        'Gain parameter not specified',
+        HttpStatus.BAD_REQUEST,
+      );
+    if (typeof gain !== 'number' || isNaN(gain))
+      throw new HttpException(
+        'Invalid gain parameter type. Must be a number',
+        HttpStatus.BAD_REQUEST,
+      );
+    return { gain: this.appService.setGain(IOType.STRIP, +stripId, gain) };
+  }
+}

tsconfig.json

@@ -1,5 +1,7 @@
 {
+  "watchOptions": {"excludeDirectories": ["../library/logs"]},
   "compilerOptions": {
+    // "strict": true,
     "module": "commonjs",
     "declaration": true,
     "removeComments": true,
@@ -9,6 +11,7 @@
     "target": "ES2021",
     "sourceMap": true,
     "outDir": "./dist",
+    "allowJs": true,
     "baseUrl": "./",
     "incremental": true,
     "skipLibCheck": true,