Add calculation services and update packaging model

Introduce `CalculationExecutionService` and `ContainerCalculationService` for handling premise and container-level calculations, along with a new `ContainerCalculationResult` model. Updated `PackagingDimension` to include a `withTolerance` method for dimension adjustments. Renamed `CalculationController` to `PremiseController` for improved clarity. Enhanced `ExcelReportingService` for accurate header and data mapping during report generation.

src/main/java/de/avatic/lcc/calculationmodel/ContainerCalculationResult.java

@@ -0,0 +1,9 @@
+package de.avatic.lcc.calculationmodel;
+
+public class ContainerCalculationResult {
+
+    private int layer;
+    private String structure;
+    private int huUnitCount;
+
+}

src/main/java/de/avatic/lcc/controller/calculation/PremiseController.java

@@ -24,7 +24,7 @@ import java.util.Map;
 
 @RestController
 @RequestMapping("/api/calculation")
-public class CalculationController {
+public class PremiseController {
 
     private final PremiseSearchStringAnalyzerService premiseSearchStringAnalyzerService;
     private final PremisesService premisesServices;
@@ -33,7 +33,7 @@ public class CalculationController {
     private final ChangeSupplierService changeSupplierService;
     private final ChangeMaterialService changeMaterialService;
 
-    public CalculationController(PremiseSearchStringAnalyzerService premiseSearchStringAnalyzerService, PremisesService premisesServices, PremiseCreationService premiseCreationService, DestinationService destinationService, ChangeSupplierService changeSupplierService, ChangeMaterialService changeMaterialService) {
+    public PremiseController(PremiseSearchStringAnalyzerService premiseSearchStringAnalyzerService, PremisesService premisesServices, PremiseCreationService premiseCreationService, DestinationService destinationService, ChangeSupplierService changeSupplierService, ChangeMaterialService changeMaterialService) {
         this.premiseSearchStringAnalyzerService = premiseSearchStringAnalyzerService;
         this.premisesServices = premisesServices;
         this.premiseCreationService = premiseCreationService;
@@ -71,7 +71,7 @@ public class CalculationController {
     // triggers a calculation
     @PutMapping("/done")
     public ResponseEntity<Integer> completePremises(@RequestBody List<Integer> premiseIds) {
-        return ResponseEntity.ok(premisesServices.startCalculation(premiseIds)); //TODO
+        return ResponseEntity.ok(premisesServices.startCalculation(premiseIds));
     }
 
     @PutMapping("/packaging")

src/main/java/de/avatic/lcc/model/packaging/PackagingDimension.java

@@ -106,4 +106,20 @@ public class PackagingDimension {
     public void setDeprecated(Boolean deprecated) {
         isDeprecated = deprecated;
     }
+
+    public PackagingDimension withTolerance(double tolerance) {
+        PackagingDimension dimensions = new PackagingDimension();
+
+        dimensions.setType(type);
+        dimensions.setLength(Double.valueOf(length.doubleValue() * (1.0+tolerance)).intValue());
+        dimensions.setWidth(Double.valueOf(width.doubleValue() * (1.0+tolerance)).intValue());
+        dimensions.setHeight(Double.valueOf(height.doubleValue() * (1.0+tolerance)).intValue());
+        dimensions.setDimensionUnit(dimensionUnit);
+        dimensions.setWeight(weight);
+        dimensions.setWeightUnit(weightUnit);
+        dimensions.setContentUnitCount(contentUnitCount);
+        dimensions.setDeprecated(isDeprecated);
+
+        return dimensions;
+    }
 }

src/main/java/de/avatic/lcc/service/calculation/CalculationExecutionService.java

@@ -0,0 +1,24 @@
+package de.avatic.lcc.service.calculation;
+
+import de.avatic.lcc.model.premises.Premise;
+import de.avatic.lcc.repositories.premise.PremiseRepository;
+import org.springframework.stereotype.Service;
+
+@Service
+public class CalculationExecutionService {
+
+
+    private final PremiseRepository premiseRepository;
+
+    public CalculationExecutionService(PremiseRepository premiseRepository) {
+        this.premiseRepository = premiseRepository;
+    }
+
+    public void doCalculation(Integer premiseId) {
+        var premise = premiseRepository.getPremiseById(premiseId);
+
+
+
+    }
+
+}

src/main/java/de/avatic/lcc/service/calculation/ContainerCalculationService.java

@@ -0,0 +1,41 @@
+package de.avatic.lcc.service.calculation;
+
+import de.avatic.lcc.calculationmodel.ContainerCalculationResult;
+import de.avatic.lcc.model.packaging.Packaging;
+import de.avatic.lcc.model.packaging.PackagingDimension;
+import de.avatic.lcc.model.utils.DimensionUnit;
+import de.avatic.lcc.repositories.packaging.PackagingDimensionRepository;
+import org.springframework.stereotype.Service;
+
+@Service
+public class ContainerCalculationService {
+
+    private static final double DIMENSION_TOLERANCE = 0.02;
+
+    private static final int TEU_LENGTH = 5890;
+    private static final int TEU_WIDTH = 2350;
+    private static final int TEU_HEIGHT = 2390;
+
+    private static final int FEU_LENGTH = 12030;
+    private static final int FEU_WIDTH = 2350;
+    private static final int FEU_HEIGHT = 2390;
+
+    private static final int HQ_LENGTH = 12030;
+    private static final int HQ_WIDTH = 2350;
+    private static final int HQ_HEIGHT = 2690;
+
+
+
+    public ContainerCalculationResult doCalculation(PackagingDimension hu) {
+        var dimensions = hu.withTolerance(DIMENSION_TOLERANCE);
+    }
+
+    private int calculateLayer(PackagingDimension dimension, ) {
+
+    }
+
+    private static class Container {
+        
+    }
+
+}

src/main/java/de/avatic/lcc/service/report/ExcelReportingService.java

@@ -46,21 +46,29 @@ public class ExcelReportingService {
 
             List<ReportFlattener> flatteners = reports.stream().map(ReportFlattener::new).toList();
 
-            int rowIdx = 1;
+
             while(true) {
                 boolean hasData = false;
+                boolean headerWritten = false;
 
-                var row = sheet.createRow(rowIdx);
-                int cellIdx = 0;
+                var row = sheet.createRow(sheet.getLastRowNum() + 1);
+                int cellIdx = 1 /* 0 is the header column */;
                 for(ReportFlattener flattener : flatteners) {
-                    if(cellIdx == 0) {
-                        row.createCell(cellIdx++).setCellValue(flattener.getHeader(rowIdx));
+
+                    Cell cell = row.createCell(cellIdx);
+
+                    if(flattener.hasData(row.getRowNum())) {
+                        if(!headerWritten) {
+                            row.createCell(0).setCellValue(flattener.getHeader(row.getRowNum()));
+                            headerWritten = true;
+                        }
+                        cell.setCellValue(flattener.getCell(row.getRowNum()));
                         hasData = true;
                     }
-                    row.createCell(cellIdx++).setCellValue(flattener.getCell(rowIdx));
+
+                    cellIdx++;
                 }
 
-                rowIdx++;
                 if(!hasData) break;
             }
 
@@ -73,11 +81,6 @@ public class ExcelReportingService {
         }
     }
 
-    private void mapToCell(Sheet sheet, ReportDTO reportDTO, Cell cell, int rowIdx) {
-
-
-    }
-
     private static class ReportFlattener {
 
         private static final String SUPPLIER_NAME = "Supplier";
@@ -179,6 +182,10 @@ public class ExcelReportingService {
         public String getHeader(int rowIdx) {
             return dataHeader.get(rowIdx);
         }
+
+        public boolean hasData(int index) {
+            return data.size() > index;
+        }
     }
 
 }