ApiFiles swigger multer

file-deculter-swigger.ts

import { ApiBody } from '@nestjs/swagger';

interface IApiFileSwigger {
     files:  Array < { name: string, description: string, required: boolean }>;

}


export const ApiFiles = ({files}: IApiFileSwigger): MethodDecorator => (
     target:any, propertyKey : string | symbol,
     descriptor: any) => {
         let schema: { type: string, properties: any, required: string[] } = { type: 'object', properties: {}, required: []};

      for (const file of files) {
          schema.properties[file.name] = { type: 'string', description: file.description ,format: 'binary'};
          if (file.required) {
              schema.required.push(file.name);
          }

          return ApiBody({
               type: 'multipart/form-data',
               schema,
               required: true,
               isArray: true,
          })(target, propertyKey, descriptor);


      }


}



to  used  it in  controller  like  this :
ApiConsumes('multipart/form-data')
ApiFiles({
     files: [
           { name: 'file', description: 'file', required: true },
               { name: 'file2', description: 'file2', required: false },
     ],})