yourCustomLogic example

[headwinds]

I'm supposed to supply my own function here...

Can you provide an example of what that what that would look like?

I definitely appreciate this library! It's challenging to find a Typescript version - I'm using NestJS for my server

---

This is how I'm trying to plug it into NestJS - it seems solid except I'm missing yourCustomLogic

import * as multer from 'multer';
import { MulterAzureStorage, MASNameResolver } from 'multer-azure-blob-storage';

const resolveBlobName: MASNameResolver = (
  req: any,
  file: Express.Multer.File,
): Promise<string> => {
  return new Promise<string>((resolve, reject) => {
    const blobName: string = yourCustomLogic(req, file);
    resolve(blobName);
  });
};

export type MetadataObj = { [k: string]: string };
const resolveMetadata: MASObjectResolver = (
  req: any,
  file: Express.Multer.File,
): Promise<MetadataObj> => {
  return new Promise<MetadataObj>((resolve, reject) => {
    const metadata: MetadataObj = yourCustomLogic(req, file);
    resolve(metadata);
  });
};

const resolveContentSettings: MASObjectResolver = (
  req: any,
  file: Express.Multer.File,
): Promise<MetadataObj> => {
  return new Promise<MetadataObj>((resolve, reject) => {
    const contentSettings: MetadataObj = yourCustomLogic(req, file);
    resolve(contentSettings);
  });
};

const azureStorage: MulterAzureStorage = new MulterAzureStorage({
  connectionString: CONNECTION_STRING,
  accessKey: ACCESS_KEY,
  accountName:  ACCOUNT_NAME,
  containerName: 'documents',
  blobName: resolveBlobName,
  metadata: resolveMetadata,
  contentSettings: resolveContentSettings,
  containerAccessLevel: 'blob',
  urlExpirationTime: 60,
});

const upload: multer.Instance = multer({
  storage: azureStorage,
});

@Injectable()
export class PhotoUploadService {
  async fileupload(@Req() req, @Res() res) {
    try {
      upload(req, res, function(error) {
        if (error) {
          console.log('attempting upload ERROR: ', error);
          return res.status(404).json(`Failed to upload image file: ${error}`);
        }

        if (req.files) {
          //console.log("attempting upload ok: ", req.files);
          return res.status(201).json(req.files[0].location);
        } else {
          console.log('attempting upload ERROR! no files!!!');
          return res
            .status(404)
            .json(`Failed to upload image file: the request had no files`);
        }
      });
    } catch (error) {
      console.log(error);
      return res.status(500).json(`Failed to upload image file: ${error}`);
    }
  }
}