PAN-7 Added response codes to DefinitionRepository methods

pandamonium-theorem-prover/persistence/src/main/java/edu/msudenver/tsp/persistence/controller/DefinitionController.java

@@ -3,10 +3,13 @@ package edu.msudenver.tsp.persistence.controller;
 import edu.msudenver.tsp.persistence.dto.DefinitionDto;
 import edu.msudenver.tsp.persistence.repository.DefinitionRepository;
 import lombok.AllArgsConstructor;
-import org.springframework.web.bind.annotation.GetMapping;
-import org.springframework.web.bind.annotation.RequestMapping;
-import org.springframework.web.bind.annotation.ResponseBody;
-import org.springframework.web.bind.annotation.RestController;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.validation.BindingResult;
+import org.springframework.web.bind.annotation.*;
+
+import javax.validation.Valid;
+import java.util.Optional;
 
 @RestController
 @AllArgsConstructor
@@ -14,8 +17,37 @@ import org.springframework.web.bind.annotation.RestController;
 public class DefinitionController {
     private final DefinitionRepository definitionRepository;
 
-    @GetMapping("/all")
-    public @ResponseBody Iterable<DefinitionDto> getAllDefinitions() {
-        return definitionRepository.findAll();
+    @GetMapping("/")
+    public @ResponseBody
+    ResponseEntity<Iterable<DefinitionDto>> getAllDefinitions() {
+        final Iterable<DefinitionDto> listOfDefinitions = definitionRepository.findAll();
+        return new ResponseEntity<>(listOfDefinitions, HttpStatus.OK);
+    }
+
+    @GetMapping("/{id}")
+    public @ResponseBody
+    ResponseEntity<DefinitionDto> getDefinitionById(@PathVariable("id") final Integer id) {
+        if (id == null) {
+            return new ResponseEntity<>(HttpStatus.BAD_REQUEST);
+        }
+        final Optional<DefinitionDto> definition = definitionRepository.findById(id);
+        return definition.map(definitionDto ->
+                new ResponseEntity<>(definitionDto, HttpStatus.OK)).orElseGet(
+                        () -> new ResponseEntity<>(HttpStatus.NOT_FOUND));
+
+    }
+
+    @PostMapping("/add")
+    public @ResponseBody ResponseEntity<DefinitionDto> insertDefinition(
+            @Valid @ModelAttribute("definitionDto") final DefinitionDto definitionDto,
+            final BindingResult bindingResult) {
+        if (bindingResult.hasErrors()) {
+            return new ResponseEntity<>(HttpStatus.UNPROCESSABLE_ENTITY);
+        }
+        if (definitionDto == null) {
+            return new ResponseEntity<>(HttpStatus.BAD_REQUEST);
+        }
+        final DefinitionDto savedDefinition = definitionRepository.save(definitionDto);
+        return new ResponseEntity<>(savedDefinition, HttpStatus.CREATED);
     }
 }