Add watchlist feature

src/main/java/edu/uchicago/mpcs/topics/auction/Item.java

@@ -46,6 +46,7 @@ public class Item
     @JsonIgnore
     private Set<ShoppingCart> shopping_carts = new HashSet<>(); //must have the same name as the table
 
+
     public Item()
     {
     }
@@ -151,7 +152,7 @@ public class Item
     @JsonIgnore
     public Set<ShoppingCart> getShopping_carts()
     {
-        return shopping_carts;
+        return this.shopping_carts;
     }
 
     public Item addShoppingCart(ShoppingCart shoppingCart)

src/main/java/edu/uchicago/mpcs/topics/auction/Watchlist.java

+package edu.uchicago.mpcs.topics.auction;
+
+import javax.persistence.*;
+import java.util.HashSet;
+import java.util.Set;
+
+@Entity
+public class Watchlist
+{
+    @Id
+    private Long watchlistId;
+    private String keyword;
+    private Double maxPrice;
+
+    public Watchlist()
+    {}
+
+    public Watchlist(Long watchlistId, String keyword, Double maxPrice)
+    {
+        this.watchlistId = watchlistId;
+        this.keyword = keyword;
+        this.maxPrice = maxPrice;
+    }
+
+    public Long getWatchlistId()
+    {
+        return watchlistId;
+    }
+
+    public void setWatchlistId(Long watchlistId)
+    {
+        this.watchlistId = watchlistId;
+    }
+
+    public String getKeyword()
+    {
+        return keyword;
+    }
+
+    public void setKeyword(String keyword)
+    {
+        this.keyword = keyword;
+    }
+
+    public Double getMaxPrice()
+    {
+        return maxPrice;
+    }
+
+    public void setMaxPrice(Double maxPrice)
+    {
+        this.maxPrice = maxPrice;
+    }
+}

src/main/java/edu/uchicago/mpcs/topics/controller/WatchlistController.java

+package edu.uchicago.mpcs.topics.controller;
+
+import edu.uchicago.mpcs.topics.auction.Item;
+import edu.uchicago.mpcs.topics.auction.ShoppingCart;
+import edu.uchicago.mpcs.topics.auction.Watchlist;
+import edu.uchicago.mpcs.topics.db.CheckoutRepository;
+import edu.uchicago.mpcs.topics.db.SearchRepository;
+import edu.uchicago.mpcs.topics.db.ShoppingCartRepository;
+import edu.uchicago.mpcs.topics.db.WatchlistRepository;
+import edu.uchicago.mpcs.topics.service.CheckoutService;
+import edu.uchicago.mpcs.topics.service.ShoppingCartService;
+import org.springframework.web.bind.annotation.*;
+
+import java.util.List;
+
+/**
+ * Created by Bright on 2018-11-26.
+ */
+
+@RestController
+@RequestMapping("/watchlist")
+public class WatchlistController
+{
+    private WatchlistRepository watchlistRepository;
+    private SearchRepository searchRepository;
+
+    public WatchlistController(WatchlistRepository watchlistRepository, SearchRepository searchRepository)
+    {
+        this.watchlistRepository = watchlistRepository;
+        this.searchRepository = searchRepository;
+    }
+
+    @GetMapping("/{id}")
+    public List<Item> getWatchlist(@PathVariable Long id)
+    {
+        Watchlist watchlist = watchlistRepository.findById(id).orElseThrow(null);
+
+
+        String keyword = watchlist.getKeyword();
+        Double maxPrice = watchlist.getMaxPrice();
+
+
+        return searchRepository.findAllByDescriptionContainsAndCurrentPriceLessThan(keyword, maxPrice);
+    }
+
+    @PostMapping
+    public Watchlist createWatchlist(@RequestBody Watchlist watchlist)
+    {
+        return watchlistRepository.save(watchlist);
+    }
+}

src/main/java/edu/uchicago/mpcs/topics/db/SearchRepository.java

@@ -11,5 +11,5 @@ import java.util.List;
 public interface SearchRepository extends CrudRepository<Item, String>
 {
     List<Item> findAllByDescriptionContains(String keyword);
-
+    List<Item> findAllByDescriptionContainsAndCurrentPriceLessThan(String description, Double currentPrice);
 }

src/main/java/edu/uchicago/mpcs/topics/db/WatchlistRepository.java

+package edu.uchicago.mpcs.topics.db;
+
+import edu.uchicago.mpcs.topics.auction.Item;
+import edu.uchicago.mpcs.topics.auction.Watchlist;
+import org.springframework.data.repository.CrudRepository;
+
+import java.util.List;
+
+/**
+ * Created by Bright on 2018-11-26.
+ */
+public interface WatchlistRepository extends CrudRepository<Watchlist, Long>
+{
+}

src/main/java/edu/uchicago/mpcs/topics/service/SearchEngine.java

-package edu.uchicago.mpcs.topics.service;
-
-import edu.uchicago.mpcs.topics.auction.ItemCategory;
-//import edu.uchicago.mpcs.topics.auction.Listing;
-import org.hibernate.query.Query;
-
-import java.util.List;
-
-public interface SearchEngine {
-//    List<Listing> search(Query query);
-//    List<Listing> search(ItemCategory itemCategory);
-}