Separated the Java Consumer es a standalone example

[demos/example-siren] / src / main / java / io / pactflow / example / sirenprovider / controllers / OrderController.java

diff --git a/src/main/java/io/pactflow/example/sirenprovider/controllers/OrderController.java b/src/main/java/io/pactflow/example/sirenprovider/controllers/OrderController.java
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+++ b/src/main/java/io/pactflow/example/sirenprovider/controllers/OrderController.java
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+package io.pactflow.example.sirenprovider.controllers;
+
+import io.pactflow.example.sirenprovider.models.Order;
+import org.springframework.hateoas.CollectionModel;
+import org.springframework.hateoas.EntityModel;
+import org.springframework.hateoas.Link;
+import org.springframework.hateoas.RepresentationModel;
+import org.springframework.hateoas.server.ExposesResourceFor;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.DeleteMapping;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.PutMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import java.util.Random;
+
+import static org.springframework.hateoas.server.mvc.WebMvcLinkBuilder.afford;
+import static org.springframework.hateoas.server.mvc.WebMvcLinkBuilder.linkTo;
+import static org.springframework.hateoas.server.mvc.WebMvcLinkBuilder.methodOn;
+
+@RestController
+@ExposesResourceFor(Order.class)
+@RequestMapping(value = "/orders")
+public class OrderController {
+
+  @GetMapping
+  public ResponseEntity<RepresentationModel<?>> orders() {
+    Long id = Math.abs(new Random().nextLong());
+    Order order = new Order(id);
+    Link selfLink = actions(order);
+    EntityModel<Order> model = EntityModel.of(order, selfLink);
+    RepresentationModel<?> orders = CollectionModel.of(model);
+    orders.add(linkTo(methodOn(OrderController.class).orders()).withSelfRel());
+    return ResponseEntity.ok(orders);
+  }
+
+  @GetMapping(value = "/{id}")
+  public ResponseEntity<EntityModel<Order>> order(@PathVariable(value = "id", required = true) Long id) {
+    Order order = new Order(id);
+    Link selfLink = actions(order);
+    EntityModel<Order> model = EntityModel.of(order, selfLink);
+    return ResponseEntity.ok(model);
+  }
+
+  @PutMapping("/{id}")
+  public EntityModel<Order> update(@PathVariable(value = "id", required = true) Long id, Order order) {
+    Link selfLink = actions(order);
+    return EntityModel.of(order, selfLink);
+  }
+
+  private Link actions(Order order) {
+    return linkTo(methodOn(OrderController.class).order(order.getId())).withSelfRel()
+      .andAffordance(afford(methodOn(OrderController.class).update(order.getId(), null)))
+      .andAffordance(afford(methodOn(OrderController.class).delete(order.getId())))
+      .andAffordance(afford(methodOn(OrderController.class).changeStatus(order.getId(), null)));
+  }
+
+  @PutMapping("/{id}/status")
+  public EntityModel<Order> changeStatus(@PathVariable(value = "id", required = true) Long id, String status) {
+    Order order = new Order(id);
+    Link selfLink = actions(order);
+    return EntityModel.of(order, selfLink);
+  }
+
+  @DeleteMapping("/{id}")
+  public ResponseEntity<Void> delete(@PathVariable(value = "id", required = true) Long id) {
+    return ResponseEntity.ok().build();
+  }
+}