Persisting a car with one existing component

car/src/main/java/cz/muni/pa165/car/config/PersistingCars.java

+package cz.muni.pa165.car.config;
+
+import cz.muni.pa165.car.data.model.Car;
+import cz.muni.pa165.car.data.repository.CarRepository;
+import cz.muni.pa165.car.restemplate.DbGetter;
+import cz.muni.pa165.common_library.dtos.CarComponentResponseDto;
+import jakarta.annotation.PostConstruct;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+
+import java.util.Collections;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Random;
+import java.util.Set;
+
+@Service
+public class PersistingCars {
+  private final CarRepository carRepository;
+
+  @Autowired
+  DbGetter dbGetter;
+
+  @Autowired
+  public PersistingCars(CarRepository carRepository) {
+    this.carRepository = carRepository;
+  }
+
+  @PostConstruct
+  public void persistCars() {
+    carRepository.deleteAll();
+
+    // ID, set(components), set(drivers), mainDriverID
+    Set<Long> firstCarComponents = new HashSet();
+    Set<Long> firstCarDrivers = new HashSet<>();
+    var firstCar = new Car(null,
+        firstCarComponents,
+        firstCarDrivers,
+        null);
+    List<CarComponentResponseDto> allComponents = dbGetter.getAllComponentsFromDb();
+    if (allComponents.size() != 0) {
+      Random random = new Random();
+      int index =  random.ints(0, allComponents.size()).findFirst().getAsInt();
+      Long componentId = allComponents.get(index).getId();
+      firstCar.setComponents(new HashSet<Long>(Collections.singleton(componentId)));
+    }
+    carRepository.save(firstCar);
+  }
+}

component/src/main/java/cz/muni/pa165/component/config/PersistingCarComponents.java

@@ -23,17 +23,17 @@ public class PersistingCarComponents {
     carComponentRepository.deleteAll();
 
     // Tyres
-    var heavyTyres = new CarComponent(null,
+    var heavyTyres = new CarComponent(0L,
         "Tyres",
         BigDecimal.valueOf(200),
         BigDecimal.valueOf(10000),
         "M");
-    var expensiveTyres = new CarComponent(null,
+    var expensiveTyres = new CarComponent(1L,
         "Tyres",
         BigDecimal.valueOf(150),
         BigDecimal.valueOf(23500),
         "T");
-    var basicTyres = new CarComponent(null,
+    var basicTyres = new CarComponent(2L,
         "Tyres",
         BigDecimal.valueOf(150),
         BigDecimal.valueOf(9000),
@@ -43,17 +43,17 @@ public class PersistingCarComponents {
     carComponentRepository.save(basicTyres);
 
     // Engines
-    var basicEngine = new CarComponent(null,
+    var basicEngine = new CarComponent(3L,
         "Engine",
         BigDecimal.valueOf(350),
         BigDecimal.valueOf(150000),
         "H");
-    var lightEngine = new CarComponent(null,
+    var lightEngine = new CarComponent(4L,
         "Engine",
         BigDecimal.valueOf(320),
         BigDecimal.valueOf(230000),
         "H");
-    var oldEngine = new CarComponent(null,
+    var oldEngine = new CarComponent(5L,
         "Engine",
         BigDecimal.valueOf(350),
         BigDecimal.valueOf(100000),
@@ -63,17 +63,17 @@ public class PersistingCarComponents {
     carComponentRepository.save(oldEngine);
 
     // Gearboxes
-    var basicGearbox = new CarComponent(null,
+    var basicGearbox = new CarComponent(6L,
         "Gearbox",
         BigDecimal.valueOf(70),
         BigDecimal.valueOf(12000),
         "GM");
-    var extendedGearbox = new CarComponent(null,
+    var extendedGearbox = new CarComponent(7L,
         "Gearbox",
         BigDecimal.valueOf(80),
         BigDecimal.valueOf(15000),
         "GM");
-    var compactGearbox = new CarComponent(null,
+    var compactGearbox = new CarComponent(8L,
         "Gearbox",
         BigDecimal.valueOf(50),
         BigDecimal.valueOf(17000),

driver/src/main/java/cz/muni/pa165/driver/config/PersistingDrivers.java

@@ -42,7 +42,7 @@ public class PersistingDrivers {
         "Racecraft", 4,
         "Aggressiveness", 5);
     thirdDriver.setCharacteristics(thirdDriverChars);
-    
+
     driverRepository.save(firstDriver);
     driverRepository.save(secondDriver);
     driverRepository.save(thirdDriver);