feat: wip attach attachments to resource models

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

@@ -0,0 +1,149 @@
+import { Inject, Service } from 'typedi';
+import { isEmpty } from 'lodash';
+import {
+  IExpenseCreatedPayload,
+  IExpenseCreatingPayload,
+  IExpenseDeletingPayload,
+  IExpenseEventEditPayload,
+} from '@/interfaces';
+import events from '@/subscribers/events';
+import { LinkAttachment } from '../LinkAttachment';
+import { ValidateAttachments } from '../ValidateAttachments';
+import { UnlinkAttachment } from '../UnlinkAttachment';
+
+@Service()
+export class AttachmentsOnExpenses {
+  @Inject()
+  private linkAttachmentService: LinkAttachment;
+
+  @Inject()
+  private unlinkAttachmentService: UnlinkAttachment;
+
+  @Inject()
+  private validateDocuments: ValidateAttachments;
+
+  /**
+   * Constructor method.
+   */
+  public attach(bus) {
+    bus.subscribe(
+      events.expenses.onCreating,
+      this.validateAttachmentsOnExpenseCreate.bind(this)
+    );
+    bus.subscribe(
+      events.expenses.onCreated,
+      this.handleAttachmentsOnExpenseCreated.bind(this)
+    );
+    bus.subscribe(
+      events.expenses.onEdited,
+      this.handleUnlinkUnpresentedKeysOnExpenseEdited.bind(this)
+    );
+    bus.subscribe(
+      events.expenses.onEdited,
+      this.handleLinkPresentedKeysOnExpenseEdited.bind(this)
+    );
+    bus.subscribe(
+      events.expenses.onDeleting,
+      this.handleUnlinkAttachmentsOnExpenseDeleted.bind(this)
+    );
+  }
+
+  /**
+   * Validates the attachment keys on creating expense.
+   * @param {ISaleInvoiceCreatingPaylaod}
+   * @returns {Promise<void>}
+   */
+  private async validateAttachmentsOnExpenseCreate({
+    expenseDTO,
+    tenantId,
+  }: IExpenseCreatingPayload): Promise<void> {
+    if (isEmpty(expenseDTO.attachments)) {
+      return;
+    }
+    const documentKeys = expenseDTO?.attachments?.map((a) => a.key);
+
+    await this.validateDocuments.validate(tenantId, documentKeys);
+  }
+
+  /**
+   * Handles linking the attachments of the created expense.
+   * @param {ISaleInvoiceCreatedPayload}
+   * @returns {Promise<void>}
+   */
+  private async handleAttachmentsOnExpenseCreated({
+    tenantId,
+    expenseDTO,
+    expense,
+    trx,
+  }: IExpenseCreatedPayload): Promise<void> {
+    if (isEmpty(expenseDTO.attachments)) return;
+
+    const keys = expenseDTO.attachments?.map((attachment) => attachment.key);
+    await this.linkAttachmentService.bulkLink(
+      tenantId,
+      keys,
+      'Expense',
+      expense.id,
+      trx
+    );
+  }
+
+  /**
+   * Handles unlinking all the unpresented keys of the edited expense.
+   * @param {ISaleInvoiceEditedPayload}
+   */
+  private async handleUnlinkUnpresentedKeysOnExpenseEdited({
+    tenantId,
+    expenseDTO,
+    expense,
+  }: IExpenseEventEditPayload) {
+    const keys = expenseDTO.attachments?.map((attachment) => attachment.key);
+    await this.unlinkAttachmentService.unlinkUnpresentedKeys(
+      tenantId,
+      keys,
+      'Expense',
+      expense.id
+    );
+  }
+
+  /**
+   * Handles linking all the presented keys of the edited expense.
+   * @param {ISaleInvoiceEditedPayload}
+   * @returns {Promise<void>}
+   */
+  private async handleLinkPresentedKeysOnExpenseEdited({
+    tenantId,
+    expenseDTO,
+    oldExpense,
+    trx,
+  }: IExpenseEventEditPayload) {
+    if (isEmpty(expenseDTO.attachments)) return;
+
+    const keys = expenseDTO.attachments?.map((attachment) => attachment.key);
+    await this.linkAttachmentService.bulkLink(
+      tenantId,
+      keys,
+      'Expense',
+      oldExpense.id,
+      trx
+    );
+  }
+
+  /**
+   * Unlink all attachments once the expense deleted.
+   * @param {ISaleInvoiceDeletedPayload}
+   * @returns {Promise<void>}
+   */
+  private async handleUnlinkAttachmentsOnExpenseDeleted({
+    tenantId,
+    oldExpense,
+    trx,
+  }: IExpenseDeletingPayload) {
+    await this.unlinkAttachmentService.unlinkAllModelKeys(
+      tenantId,
+      'Expense',
+      oldExpense.id,
+      trx
+    );
+  }
+}