refactor(nestjs): attachments and s3 modules

packages/server-nest/src/modules/Attachments/AttachmentsApplication.ts

@@ -0,0 +1,80 @@
+import { Injectable } from '@nestjs/common';
+import { UploadDocument } from './UploadDocument';
+import { DeleteAttachment } from './DeleteAttachment';
+import { GetAttachment } from './GetAttachment';
+import { LinkAttachment } from './LinkAttachment';
+import { UnlinkAttachment } from './UnlinkAttachment';
+import { getAttachmentPresignedUrl } from './GetAttachmentPresignedUrl';
+
+@Injectable()
+export class AttachmentsApplication {
+  constructor(
+    private readonly uploadDocumentService: UploadDocument,
+    private readonly deleteDocumentService: DeleteAttachment,
+    private readonly getDocumentService: GetAttachment,
+    private readonly linkDocumentService: LinkAttachment,
+    private readonly unlinkDocumentService: UnlinkAttachment,
+    private readonly getPresignedUrlService: getAttachmentPresignedUrl,
+  ) {}
+
+  /**
+   * Saves the metadata of uploaded document to S3 on database.
+   * @param {number} tenantId
+   * @param {} file
+   * @returns {Promise<Document>}
+   */
+  public upload(file: any) {
+    return this.uploadDocumentService.upload(file);
+  }
+
+  /**
+   * Deletes the give file attachment file key.
+   * @param {string} documentKey
+   * @returns {Promise<void>}
+   */
+  public delete(documentKey: string) {
+    return this.deleteDocumentService.delete(documentKey);
+  }
+
+  /**
+   * Retrieves the document data.
+   * @param {number} tenantId
+   * @param {string} documentKey
+   */
+  public get(documentKey: string) {
+    return this.getDocumentService.getAttachment(documentKey);
+  }
+
+  /**
+   * Links the given document to resource model.
+   * @param {string} filekey
+   * @param {string} modelRef
+   * @param {number} modelId
+   * @returns
+   */
+  public link(filekey: string, modelRef: string, modelId: number) {
+    return this.linkDocumentService.link(filekey, modelRef, modelId);
+  }
+
+  /**
+   * Unlinks the given document from resource model.
+   * @param {number} tenantId
+   * @param {string} filekey
+   * @param {string} modelRef
+   * @param {number} modelId
+   * @returns
+   */
+  public unlink(filekey: string, modelRef: string, modelId: number) {
+    return this.unlinkDocumentService.unlink(filekey, modelRef, modelId);
+  }
+
+  /**
+   * Retrieves the presigned url of the given attachment key.
+   * @param {number} tenantId
+   * @param {string} key
+   * @returns {Promise<string>}
+   */
+  public getPresignedUrl(key: string): Promise<string> {
+    return this.getPresignedUrlService.getPresignedUrl(key);
+  }
+}