added a demo code in po controller for easy testing

src/main/java/com/ffii/fpsms/modules/purchaseOrder/web/PurchaseOrderController.kt

@@ -4,6 +4,7 @@ import com.ffii.core.response.RecordsRes
 import com.ffii.core.support.JdbcDao
 import com.ffii.core.utils.CriteriaArgsBuilder
 import com.ffii.core.utils.PagingUtils
+import com.ffii.core.utils.ZebraPrinterUtil
 import com.ffii.fpsms.modules.master.entity.Items
 import com.ffii.fpsms.modules.master.service.ItemsService
 import com.ffii.fpsms.modules.master.web.models.MessageResponse
@@ -12,16 +13,22 @@ import com.ffii.fpsms.modules.purchaseOrder.entity.projections.PurchaseOrderData
 import com.ffii.fpsms.modules.purchaseOrder.entity.projections.PurchaseOrderInfo
 import com.ffii.fpsms.modules.purchaseOrder.service.PurchaseOrderService
 import com.ffii.fpsms.modules.purchaseOrder.web.model.PagingRequest
+import com.ffii.fpsms.modules.stock.service.StockInLineService
+import com.ffii.fpsms.modules.stock.web.model.ExportQrCodeRequest
 import com.ffii.fpsms.modules.stock.web.model.SaveStockInLineRequest
 import jakarta.servlet.http.HttpServletRequest
+import net.sf.jasperreports.engine.JasperExportManager
+import net.sf.jasperreports.engine.JasperPrint
 import org.springframework.data.domain.Page
 import org.springframework.data.domain.PageRequest
 import org.springframework.web.bind.annotation.*
+import java.io.File
 
 @RestController
 @RequestMapping("/po")
 class PurchaseOrderController(
-    private val purchaseOrderService: PurchaseOrderService
+    private val purchaseOrderService: PurchaseOrderService,
+    private val stockInLineService: StockInLineService
 ) {
     @GetMapping("/list")
     fun getPoList(
@@ -46,9 +53,11 @@ class PurchaseOrderController(
 
         val fullList = purchaseOrderService.getPoList(criteriaArgs)
         val paginatedList = PagingUtils.getPaginatedList(fullList,pageSize, pageNum)
+
         return RecordsRes(paginatedList, fullList.size)
     }
 
+
     @GetMapping("/testing")
     fun testing(request: HttpServletRequest) {
         val criteriaArgs = CriteriaArgsBuilder.withRequest(request)
@@ -62,6 +71,32 @@ class PurchaseOrderController(
 
     @GetMapping("/detail/{id}") // purchaseOrderId
     fun getDetailedPo(@PathVariable id: Long): Map<String, Any> {
+
+        /* tested the sample printing function by a pdf file
+        // just get a pdf file for demo , it can be any files? didn't try pdf with pages or multi pdf files
+        val request = ExportQrCodeRequest(
+            stockInLineIds = listOf(1L)
+        )
+        val pdf = stockInLineService.exportStockInLineQrcode(request)
+        val jasperPrint = pdf["report"] as JasperPrint
+
+        // 1. Create a temporary file to save the PDF.
+        val tempPdfFile = File.createTempFile("print_job_", ".pdf")
+
+        try {
+
+            // 2. Export the JasperPrint to the temporary PDF file.
+            JasperExportManager.exportReportToPdfFile(jasperPrint, tempPdfFile.absolutePath)
+
+            // 3. Call the utility function with the temporary file.
+            ZebraPrinterUtil.printPdfToZebra(tempPdfFile, "192.168.245.16", 9100)
+
+        } finally {
+            // 4. Ensure the temporary file is deleted after the print job is sent.
+            tempPdfFile.delete()
+        }
+        */
+
         return purchaseOrderService.getDetailedPo(id)
     }