feat: getting invoice preview on send mail view

packages/server/src/api/controllers/Sales/SalesInvoices.ts

@@ -449,6 +449,7 @@ export default class SaleInvoicesController extends BaseController {
     const acceptType = accept.types([
       ACCEPT_TYPE.APPLICATION_JSON,
       ACCEPT_TYPE.APPLICATION_PDF,
+      ACCEPT_TYPE.APPLICATION_TEXT_HTML,
     ]);
     // Retrieves invoice in PDF format.
     if (ACCEPT_TYPE.APPLICATION_PDF === acceptType) {
@@ -463,7 +464,13 @@ export default class SaleInvoicesController extends BaseController {
         'Content-Disposition': `attachment; filename="${filename}"`,
       });
       res.send(pdfContent);
-      // Retrieves invoice in json format.
+      // Retrieves invoice in html json format.
+    } else if (ACCEPT_TYPE.APPLICATION_TEXT_HTML === acceptType) {
+      const htmlContent = await this.saleInvoiceApplication.saleInvoiceHtml(
+        tenantId,
+        saleInvoiceId
+      );
+      return res.status(200).send({ htmlContent });
     } else {
       const saleInvoice = await this.saleInvoiceApplication.getSaleInvoice(
         tenantId,

packages/server/src/services/Sales/Invoices/SaleInvoicePdf.ts

@@ -31,6 +31,25 @@ export class SaleInvoicePdf {
   @Inject()
   private eventPublisher: EventPublisher;
 
+  /**
+   * Retrieve sale invoice html content.
+   * @param {number} tenantId - Tenant Id.
+   * @param {ISaleInvoice} saleInvoice -
+   * @returns {Promise<string>}
+   */
+  public async saleInvoiceHtml(
+    tenantId: number,
+    invoiceId: number
+  ): Promise<string> {
+    const brandingAttributes = await this.getInvoiceBrandingAttributes(
+      tenantId,
+      invoiceId
+    );
+    return renderInvoicePaperTemplateHtml({
+      ...brandingAttributes,
+    });
+  }
+
   /**
    * Retrieve sale invoice pdf content.
    * @param {number} tenantId - Tenant Id.
@@ -43,13 +62,8 @@ export class SaleInvoicePdf {
   ): Promise<[Buffer, string]> {
     const filename = await this.getInvoicePdfFilename(tenantId, invoiceId);
 
-    const brandingAttributes = await this.getInvoiceBrandingAttributes(
-      tenantId,
-      invoiceId
-    );
-    const htmlContent = renderInvoicePaperTemplateHtml({
-      ...brandingAttributes,
-    });
+    const htmlContent = await this.saleInvoiceHtml(tenantId, invoiceId);
+
     // Converts the given html content to pdf document.
     const buffer = await this.chromiumlyTenancy.convertHtmlContent(
       tenantId,

packages/server/src/services/Sales/Invoices/SaleInvoicesApplication.ts

@@ -273,6 +273,19 @@ export class SaleInvoiceApplication {
     return this.pdfSaleInvoiceService.saleInvoicePdf(tenantId, saleInvoiceId);
   }
 
+  /**
+   * Retrieves the html content of the given sale invoice.
+   * @param {number} tenantId
+   * @param {number} saleInvoiceId
+   * @returns {Promise<string>}
+   */
+  public saleInvoiceHtml(
+    tenantId: number,
+    saleInvoiceId: number
+  ): Promise<string> {
+    return this.pdfSaleInvoiceService.saleInvoiceHtml(tenantId, saleInvoiceId);
+  }
+
   /**
    *
    * @param {number} tenantId