commit after reset

week5_TinsaeGhilay/client/src/main/java/net/tinsae/Client.java

@@ -7,19 +7,13 @@ import java.net.http.HttpResponse;
 
 public class Client {
     private String url;
-    private String table = "/items";
 
-    public Client(String url){
+    public Client(String url, String table){
         this.url = url+table;
     }
 
     private static final HttpClient client = HttpClient.newHttpClient();
 
-    public static void main(String[] args) throws Exception {
-
-        
-    }
-
 
     public int postItem(String json) throws Exception {
         HttpRequest request = HttpRequest.newBuilder()
@@ -54,7 +48,7 @@ public class Client {
     }
 
 
-    public int getItems() throws Exception {
+    public HttpResponse<String> getItems() throws Exception {
         HttpRequest request = HttpRequest.newBuilder()
                 .uri(new URI(url))
                 .GET()
@@ -62,10 +56,10 @@ public class Client {
 
         HttpResponse<String> response = client.send(request, HttpResponse.BodyHandlers.ofString());
         System.out.println(response.body());
-        return response.statusCode();
+        return response;
     }
 
-    public int getItem(int id) throws Exception {
+    public HttpResponse<String> getItem(int id) throws Exception {
         HttpRequest request = HttpRequest.newBuilder()
                 .uri(new URI(url+"/"+id))
                 .GET()
@@ -73,6 +67,7 @@ public class Client {
 
         HttpResponse<String> response = client.send(request, HttpResponse.BodyHandlers.ofString());
         System.out.println(response.body());
-        return response.statusCode();
+        return response;
     }
-}
+
+}

week5_TinsaeGhilay/client/src/main/java/net/tinsae/Delegator.java

@@ -1,14 +1,17 @@
 package net.tinsae;
 
 import java.util.Scanner;
+import com.fasterxml.jackson.databind.JsonNode;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.node.ObjectNode;
 
 public class Delegator {
 
     private final Client client;
     private final Scanner sc = new Scanner(System.in);
 
-    public Delegator(String path) {
-        client = new Client(path);
+    public Delegator(String path, String table) {
+        client = new Client(path, table);
     }
 
     public void executeCommand(String command) {
@@ -25,7 +28,8 @@ public class Delegator {
         try {
             System.out.print("ID of the item you want to delete: ");
             int id = sc.nextInt();
-            sc.nextLine(); // consume newline
+            // consume next line, safety
+            sc.nextLine(); 
             int response = client.deleteItem(id);
             System.out.println("Command executed with response code " + response);
         } catch (Exception e) {
@@ -43,7 +47,8 @@ public class Delegator {
 
             System.out.print("Price: ");
             float price = sc.nextFloat();
-            sc.nextLine(); // consume newline
+            // consume newline, is just safety
+            sc.nextLine();
 
             int response = client.postItem(makeJson(name, description, price));
             System.out.println("Command executed with response code " + response);
@@ -75,7 +80,8 @@ public class Delegator {
 
             System.out.print("Enter ID: ");
             int id = sc.nextInt();
-            sc.nextLine(); // consume newline
+            // to be safe
+            sc.nextLine();
             client.getItem(id);
 
         } catch (Exception e) {
@@ -84,6 +90,47 @@ public class Delegator {
     }
 
     private void delegateUpdate() {
-        System.out.println("Update not implemented yet");
+        try {
+            System.out.print("Enter ID: ");
+            int id = sc.nextInt();
+            // consume next line
+            sc.nextLine();
+
+            // get old values
+            String response = client.getItem(id).body();
+            ObjectMapper mapper = new ObjectMapper();
+            ObjectNode node = (ObjectNode) mapper.readTree(response);
+
+            while (true) {
+                System.out.println("Which field do you want to update? (name, description, price, done)");
+                String field = sc.nextLine().trim().toLowerCase();
+
+                if (field.equals("done")) {
+                    break;
+                }
+
+                if(!node.has(field)){
+                    System.out.println(" no "+field+" field in database. please choose apropriately");
+                    continue;
+                }
+
+                System.out.println("New value for "+field+": ");
+                String value = sc.nextLine().trim();
+
+                if (field.equals("price")) {
+                    node.put(field, Double.parseDouble(value));
+                } else {
+                    node.put(field, value);
+                }
+            }
+
+        String updatedJson = mapper.writeValueAsString(node);
+        client.putItem(id, updatedJson);
+
+        System.out.println("Update successful!");
+
+        } catch (Exception e) {
+            System.err.println("Error in executing update command: " + e.getMessage());
+        }
     }
-}
+}

week5_TinsaeGhilay/client/src/main/java/net/tinsae/Main.java

@@ -4,21 +4,31 @@ import java.util.Scanner;
 public class Main {
 
     public static void main(String[] args) {
+
+        // host url
         String path = "http://localhost:8080/shop-1.0-SNAPSHOT/api";
-        Delegator delegator = new Delegator(path);
+
+        // table name
+        String table = "/items";
+
+        Delegator delegator = new Delegator(path, table);
         System.out.println("Hello! What do you want to do? allowed actions are \n"+
-        "Insert, update, delete and read");
+        "Insert, update, delete, read or exit to close");
         Scanner sc = new Scanner(System.in);
         while(sc.hasNext()){
             String response = sc.nextLine().strip();
-            if(response.equalsIgnoreCase("exit")){
-                return;
+            if(response.equalsIgnoreCase("exit") || response.equalsIgnoreCase("done")){
+                
+                break;
             }
 
             delegator.executeCommand(response);
+            System.out.println("Continue with another command: ");
 
         }
+        // we must close scanner. leaks happen in java too.
         sc.close();
+        System.out.println("Program ended. \nDon't forget to close the server too. \n Good bye!!!");
 
     }
 }