Merge pull request #1 from SergeiPatiakin/SergeiPatiakin/download-inv…

…oice

Allow downloading invoice PDF

src/common/ipc-types.ts

@@ -48,13 +48,16 @@ export type GetInvoices = IpcTypeDef<'get-invoices', InvoiceFilter, Array<Invoic
 
 export type GetInvoiceDetail = IpcTypeDef<'get-invoice-detail', number, InvoiceDetail>
 
+export type DownloadInvoiceFile = IpcTypeDef<'download-invoice-file', number, void>
+
 export type RespondToInvoice = IpcTypeDef<'respond-to-invoice', InvoiceResponse, void>
 
 export type IpcMethods = {
   getTechnicalConf: GetTechnicalConf
   updateTechnicalConf: UpdateTechnicalConf
   getInvoices: GetInvoices
   getInvoiceDetail: GetInvoiceDetail
+  downloadInvoiceFile: DownloadInvoiceFile
   respondToInvoice: RespondToInvoice
 }
 
@@ -67,6 +70,7 @@ const ipcNames: IpcNames = {
   updateTechnicalConf: 'update-technical-conf',
   getInvoices: 'get-invoices',
   getInvoiceDetail: 'get-invoice-detail',
+  downloadInvoiceFile: 'download-invoice-file',
   respondToInvoice: 'respond-to-invoice',
 }
 

src/main/main-ipc.ts

@@ -1,4 +1,5 @@
-import { BrowserWindow, ipcMain } from 'electron'
+import fs from 'fs'
+import { BrowserWindow, dialog, ipcMain } from 'electron'
 import { foreachIpc, InvoiceListItem, IpcHandlerFns } from '../common/ipc-types'
 import { getTechnicalConf, updateTechnicalConf } from './filesystem'
 import axios from 'axios'
@@ -68,6 +69,29 @@ const handlers: IpcHandlerFns = {
     }
     return invoiceDetail
   },
+  downloadInvoiceFile: async ({ arg: invoiceId, browserWindow }) => {
+    const r = await dialog.showSaveDialog(browserWindow, {
+      defaultPath: `${invoiceId}.pdf`
+    })
+    if (!r.canceled && r.filePath) {
+      const technicalConf = getTechnicalConf()
+      const url = new URL(`https://efaktura.mfin.gov.rs/api/publicApi/purchase-invoice/xml?invoiceId=${invoiceId}`)
+      const response = await axios.get(
+        url.toString(),
+        {
+          headers: {
+            Accept: 'text/plain',
+            ApiKey: technicalConf.apiKey,
+          },
+        }
+      )
+      const parser = new XMLParser({ ignoreAttributes: false, parseTagValue: false })
+      const document = parser.parse(response.data)
+      const invoiceFileContentB64 = document['env:DocumentEnvelope']['env:DocumentHeader']['env:DocumentPdf']['#text']
+      const invoiceFileContent = Buffer.from(invoiceFileContentB64, 'base64')
+      fs.writeFileSync(r.filePath, invoiceFileContent)
+    }
+  },
   respondToInvoice: async ({ arg: invoiceResponse }) => {
     const technicalConf = getTechnicalConf()
     const url = new URL('https://efaktura.mfin.gov.rs/api/publicApi/purchase-invoice/acceptRejectPurchaseInvoice')

src/renderer/components/InvoiceDetailPage.tsx

@@ -86,6 +86,13 @@ export const InvoiceDetailPage = (props: Props) => {
         >
           Reject...
         </Button>
+        <Button
+          onClick={async () => {
+            await ipcContextApi.downloadInvoiceFile(props.invoiceId)
+          }}
+        >
+          Download
+        </Button>
         {acceptDialogState.visible &&
           <Dialog
             open