Creation of base template (#1)

* Sample template created

* added findByName functionality for item

* Solve Cors errors and inhibit DefaultExposure

* changed project structure

* Added frontend

backend/src/main/whattocook/controller/ItemController.java

@@ -0,0 +1,60 @@
+package whattocook.controller;
+
+import whattocook.exception.ItemNotFoundException;
+import lombok.extern.slf4j.Slf4j;
+import whattocook.models.Item;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.web.bind.annotation.*;
+import whattocook.models.Unit;
+import whattocook.services.ItemService;
+
+import java.util.List;
+
+@Slf4j
+@RestController()
+@RequestMapping("/api/v1")
+public class ItemController {
+
+    @Autowired
+    private ItemService itemService;
+
+    @GetMapping("/item")
+    public Item getItem(@RequestParam String name){
+        return itemService.findByName(name).orElseThrow(() -> new ItemNotFoundException("item " + name + " not found"));
+    }
+
+    @GetMapping("/items")
+    public List<Item> getItemList() {
+        return itemService.findAll();
+    }
+
+    @GetMapping("/items/{itemId}")
+    public Item getItem(@PathVariable(value = "itemId") Long itemId) {
+        return itemService.findById(itemId).orElseThrow(() -> new ItemNotFoundException("itemId " + itemId + " not found"));
+    }
+
+    @PostMapping("/items")
+    public Item createItem(@RequestBody Item item) {
+        itemService.save(item);
+        return item;
+    }
+
+    @PutMapping("/items/{itemId}")
+    public String updateItem(@PathVariable(value = "itemId") Long itemId, @RequestBody Item item) {
+        return itemService.findById(itemId).map(i -> {
+            i.setName(item.getName());
+            i.setQuantity(item.getQuantity());
+            i.setUnit(item.getUnit());
+            itemService.save(i);
+            return "Item updated";
+        }).orElseThrow(() -> new ItemNotFoundException("itemId " + itemId + " not found"));
+    }
+
+    @DeleteMapping("/items/{itemId}")
+    public String deleteItem(@PathVariable(value = "itemId") Long itemId) {
+        return itemService.findById(itemId).map(p -> {
+            itemService.deleteById(itemId);
+            return "Item deleted";
+        }).orElseThrow(() -> new ItemNotFoundException("itemId " + itemId + " not found"));
+    }
+}