feat: wip attach attachments to resource models

packages/server/src/services/Attachments/events/AttachmentsOnBills.ts

@@ -0,0 +1,149 @@
+import { Inject, Service } from 'typedi';
+import { isEmpty } from 'lodash';
+import {
+  IBIllEventDeletedPayload,
+  IBillCreatedPayload,
+  IBillCreatingPayload,
+  IBillEditedPayload,
+} from '@/interfaces';
+import events from '@/subscribers/events';
+import { LinkAttachment } from '../LinkAttachment';
+import { ValidateAttachments } from '../ValidateAttachments';
+import { UnlinkAttachment } from '../UnlinkAttachment';
+
+@Service()
+export class AttachmentsOnBills {
+  @Inject()
+  private linkAttachmentService: LinkAttachment;
+
+  @Inject()
+  private unlinkAttachmentService: UnlinkAttachment;
+
+  @Inject()
+  private validateDocuments: ValidateAttachments;
+
+  /**
+   * Constructor method.
+   */
+  public attach(bus) {
+    bus.subscribe(
+      events.bill.onCreating,
+      this.validateAttachmentsOnBillCreate.bind(this)
+    );
+    bus.subscribe(
+      events.bill.onCreated,
+      this.handleAttachmentsOnBillCreated.bind(this)
+    );
+    bus.subscribe(
+      events.bill.onEdited,
+      this.handleUnlinkUnpresentedKeysOnBillEdited.bind(this)
+    );
+    bus.subscribe(
+      events.bill.onEdited,
+      this.handleLinkPresentedKeysOnBillEdited.bind(this)
+    );
+    bus.subscribe(
+      events.bill.onDeleting,
+      this.handleUnlinkAttachmentsOnBillDeleted.bind(this)
+    );
+  }
+
+  /**
+   * Validates the attachment keys on creating bill.
+   * @param {ISaleInvoiceCreatingPaylaod}
+   * @returns {Promise<void>}
+   */
+  private async validateAttachmentsOnBillCreate({
+    billDTO,
+    tenantId,
+  }: IBillCreatingPayload): Promise<void> {
+    if (isEmpty(billDTO.attachments)) {
+      return;
+    }
+    const documentKeys = billDTO?.attachments?.map((a) => a.key);
+
+    await this.validateDocuments.validate(tenantId, documentKeys);
+  }
+
+  /**
+   * Handles linking the attachments of the created bill.
+   * @param {ISaleInvoiceCreatedPayload}
+   * @returns {Promise<void>}
+   */
+  private async handleAttachmentsOnBillCreated({
+    tenantId,
+    bill,
+    billDTO,
+    trx,
+  }: IBillCreatedPayload): Promise<void> {
+    if (isEmpty(billDTO.attachments)) return;
+
+    const keys = billDTO.attachments?.map((attachment) => attachment.key);
+    await this.linkAttachmentService.bulkLink(
+      tenantId,
+      keys,
+      'Bill',
+      bill.id,
+      trx
+    );
+  }
+
+  /**
+   * Handles unlinking all the unpresented keys of the edited bill.
+   * @param {IBillEditedPayload}
+   */
+  private async handleUnlinkUnpresentedKeysOnBillEdited({
+    tenantId,
+    billDTO,
+    bill,
+  }: IBillEditedPayload) {
+    const keys = billDTO.attachments?.map((attachment) => attachment.key);
+    await this.unlinkAttachmentService.unlinkUnpresentedKeys(
+      tenantId,
+      keys,
+      'Bill',
+      bill.id
+    );
+  }
+
+  /**
+   * Handles linking all the presented keys of the edited bill.
+   * @param {ISaleInvoiceEditedPayload}
+   * @returns {Promise<void>}
+   */
+  private async handleLinkPresentedKeysOnBillEdited({
+    tenantId,
+    billDTO,
+    oldBill,
+    trx,
+  }: IBillEditedPayload) {
+    if (isEmpty(billDTO.attachments)) return;
+
+    const keys = billDTO.attachments?.map((attachment) => attachment.key);
+    await this.linkAttachmentService.bulkLink(
+      tenantId,
+      keys,
+      'Bill',
+      oldBill.id,
+      trx
+    );
+  }
+
+  /**
+   * Unlink all attachments once the bill deleted.
+   * @param {ISaleInvoiceDeletedPayload}
+   * @returns {Promise<void>}
+   */
+  private async handleUnlinkAttachmentsOnBillDeleted({
+    tenantId,
+    oldBill,
+    trx,
+  }: IBIllEventDeletedPayload) {
+    await this.unlinkAttachmentService.unlinkAllModelKeys(
+      tenantId,
+      'Bill',
+      oldBill.id,
+      trx
+    );
+  }
+}