adapted class PlantListModel to PlantDatabase

#12

src/main/java/ch/zhaw/gartenverwaltung/io/JsonPlantDatabase.java

@@ -56,9 +56,9 @@ public class JsonPlantDatabase implements PlantDatabase {
      * @see PlantDatabase#getPlantById(long)
      */
     @Override
-    public Optional<Plant> getPlantById(long id) throws HardinessZoneNotSetException, IOException {
+    public Optional<Plant> getPlantById(HardinessZone zone, long id) throws HardinessZoneNotSetException, IOException {
         if (plantMap.isEmpty()) {
-            loadPlantList(currentZone);
+            loadPlantList(zone);
         }
         return Optional.ofNullable(plantMap.get(id));
     }

src/main/java/ch/zhaw/gartenverwaltung/io/PlantDatabase.java

@@ -30,5 +30,5 @@ public interface PlantDatabase {
      * @throws IOException If the database cannot be accessed
      * @throws HardinessZoneNotSetException If no {@link HardinessZone} was specified
      */
-    Optional<Plant> getPlantById(long id) throws IOException, HardinessZoneNotSetException;
+    Optional<Plant> getPlantById(HardinessZone zone, long id) throws IOException, HardinessZoneNotSetException;
 }

src/main/java/ch/zhaw/gartenverwaltung/plantList/PlantListModel.java

@@ -1,53 +1,87 @@
 package ch.zhaw.gartenverwaltung.plantList;
 
+import ch.zhaw.gartenverwaltung.io.HardinessZoneNotSetException;
+import ch.zhaw.gartenverwaltung.io.JsonPlantDatabase;
+import ch.zhaw.gartenverwaltung.io.PlantDatabase;
+import ch.zhaw.gartenverwaltung.types.HardinessZone;
 import ch.zhaw.gartenverwaltung.types.Plant;
 
+import java.io.IOException;
+import java.util.ArrayList;
 import java.util.Comparator;
 import java.util.List;
 import java.util.function.Predicate;
 
 public class PlantListModel {
-    private List<Plant> plantList;
+    private final PlantDatabase plantDatabase;
+    private HardinessZone currentZone;
 
     /**
      * Comparators to create sorted Plant List
      */
     public final Comparator<Plant> sortByName = (Plant o1, Plant o2) -> o1.name().compareTo(o2.name());
     public final Comparator<Plant> getSortById = (Plant o1, Plant o2) -> Long.compare(o1.id(), o2.id());
-    public final Comparator<Plant> sortBySpacing = (Plant o1, Plant o2) -> o1.spacing() - o2.spacing();
 
-
-    public PlantListModel(List<Plant> plantList) {
-        setPlantList(plantList);
+    public PlantListModel() {
+        plantDatabase = new JsonPlantDatabase();
     }
 
-    public void setPlantList(List<Plant> plantList) {
-        this.plantList = plantList;
+    public void setCurrentZone(HardinessZone currentZone) {
+        this.currentZone = currentZone;
+    }
+
+    public HardinessZone getCurrentZone() {
+        return currentZone;
     }
 
     /**
      * Method to get actual Plant List in alphabetic Order
      * @return actual Plant List in alphabetic Order
      */
-    public List<Plant> getPlantList() {
-        return getSortedPlantList(sortByName);
+    public List<Plant> getPlantList(HardinessZone zone) throws HardinessZoneNotSetException, IOException {
+        setCurrentZone(zone);
+        return getSortedPlantList(zone, sortByName);
+    }
+
+
+    /**
+     * Method to get the actual Plant list in custom Order
+     * @param zone selected hardiness zone
+     * @param comparator comparator to sort the list
+     * @return sorted list with plants in the given hardiness zone
+     * @throws IOException If the database cannot be accessed
+     * @throws HardinessZoneNotSetException If no {@link HardinessZone} was specified
+     */
+    public List<Plant> getSortedPlantList(HardinessZone zone, Comparator<Plant> comparator) throws HardinessZoneNotSetException, IOException {
+        setCurrentZone(zone);
+        return plantDatabase.getPlantList(zone).stream().sorted(comparator).toList();
     }
 
     /**
-     * Method to get actual Plant List sorted in custom order
-     * @param comparator comparator Object which is used to sort list
-     * @return actual Plant List in custom order
+     * Method to get Filtered plant list
+     * @param predicate predicate to filter the list
+     * @param zone selected hardiness zone
+     * @return filterd list with plants in the hardinness zone
+     * @throws IOException If the database cannot be accessed
+     * @throws HardinessZoneNotSetException If no {@link HardinessZone} was specified
      */
-    public List<Plant> getSortedPlantList(Comparator<Plant> comparator) {
-        return plantList.stream().sorted(comparator).toList();
+    public List<Plant> getFilteredPlantList(HardinessZone zone, Predicate<Plant> predicate) throws HardinessZoneNotSetException, IOException {
+        setCurrentZone(zone);
+        return getPlantList(zone).stream().filter(predicate).toList();
     }
 
     /**
-     * Method to get filtered Plant List with custom filter
-     * @param predicate predicate for filter
-     * @return filtered Plant List
+     * Method to get Filtered plant list by id by exact match
+     * @param zone selected hardiness zone
+     * @param id id of plant
+     * @return if id doesn't exist: empty List, else list with 1 plant entry.
+     * @throws IOException If the database cannot be accessed
+     * @throws HardinessZoneNotSetException If no {@link HardinessZone} was specified
      */
-    public List<Plant> getFilteredPlantList(Predicate<Plant> predicate) {
-        return plantList.stream().filter(predicate).toList();
+    public List<Plant> getFilteredPlantListById(HardinessZone zone, Long id) throws HardinessZoneNotSetException, IOException {
+        setCurrentZone(zone);
+        List<Plant> plantList = new ArrayList<>();
+        plantDatabase.getPlantById(zone, id).ifPresent(plantList::add);
+        return plantList;
     }
 }