new

.gitattributes

@@ -0,0 +1,12 @@
+#
+# https://help.github.com/articles/dealing-with-line-endings/
+#
+# Linux start script should use lf
+/gradlew        text eol=lf
+
+# These are Windows script files and should use crlf
+*.bat           text eol=crlf
+
+# Binary files should be left untouched
+*.jar           binary
+

.gitignore

@@ -0,0 +1,5 @@
+# Ignore Gradle project-specific cache directory
+.gradle
+
+# Ignore Gradle build output directory
+build

.vscode/settings.json

@@ -0,0 +1,4 @@
+{
+    "java.configuration.updateBuildConfiguration": "automatic",
+    "java.debug.settings.onBuildFailureProceed": true
+}

Api/build.gradle

@@ -0,0 +1,41 @@
+/*
+ * This file was generated by the Gradle 'init' task.
+ *
+ */
+
+plugins {
+    // Apply the application plugin to add support for building a CLI application in Java.
+    id 'java'
+    id 'application'
+}
+
+// Apply a specific Java toolchain to ease working on different environments.
+java {
+    toolchain {
+        languageVersion = JavaLanguageVersion.of(24)
+    }
+}
+
+application {
+    // Define the main class for the application.
+    mainClass = 'edu.inventorym.Api'
+}
+
+repositories {
+    // Use Maven Central for resolving dependencies.
+    mavenCentral()
+}
+
+dependencies {
+    
+    implementation 'io.helidon:helidon:4.3.1'
+    implementation 'io.helidon.common:helidon-common:4.3.1'
+    implementation 'io.helidon.media:helidon-media-jsonb:3.2.12'
+    implementation 'io.helidon.media.jsonb:helidon-media-jsonb-common:1.4.16'
+    implementation 'io.helidon.media.jsonb:helidon-media-jsonb-server:1.4.16'
+    implementation 'jakarta.json.bind:jakarta.json.bind-api:3.0.1'
+    
+    implementation 'io.helidon.webserver:helidon-webserver:4.3.1'
+
+}
+

Api/src/main/java/edu/inventorym/Api.java

@@ -0,0 +1,37 @@
+package edu.inventorym;
+
+public class Api {
+
+        public static void main(String[] args) {
+            
+        }
+
+
+        void callerInterface(){
+            //@Comment
+            /* 
+            1. Add new art object to the inventory. Your manager must check that the art is not already in the inventory before adding
+            2. Remove art object from the inventory
+            3. Return a list of all art objects from inventory 
+
+            3. Add a new transaction object to the list manager is handling
+            4. Calculate and return transaction price 
+            5. Complete transaction 
+            6. Remove transaction object
+
+            7. Format and return transaction data in print format
+            
+            8. Retrieve and return transactions based on:
+                • customer email
+                • transaction date
+                • transaction id 
+                • art id
+            9. Update inventory file(s) on local system
+
+            10. Update transaction file(s) on local system
+            
+            11. Any other functionality needed to support the above requirements
+            */
+        }
+
+}

Api/src/main/java/edu/inventorym/model/Customer.java

@@ -0,0 +1,13 @@
+package edu.inventorym.model;
+
+public class Customer {
+
+    String nameFirst;
+    String nameLast;
+    String mailing;
+    String phone;
+    String email;
+
+    public Customer(){}
+
+}

Api/src/main/java/edu/inventorym/model/CustomerList.java

@@ -0,0 +1,5 @@
+package edu.inventorym.model;
+
+public class CustomerList {
+
+}

Api/src/main/java/edu/inventorym/model/CustomerManager.java

@@ -0,0 +1,5 @@
+package edu.inventorym.model;
+
+public class CustomerManager {
+
+}

Api/src/main/java/edu/inventorym/model/Drawing.java

@@ -0,0 +1,12 @@
+package edu.inventorym.model;
+
+public class Drawing extends InventoryPiece {
+
+    public String style;
+    public String technique;
+    public String category;
+
+    public Drawing() {
+        super(InventoryType.DRAWING);
+    }
+}

Api/src/main/java/edu/inventorym/model/InvalidArtOperationException.java

@@ -0,0 +1,15 @@
+package edu.inventorym.model;
+
+public class InvalidArtOperationException extends RuntimeException {
+    public InvalidArtOperationException(String message) {
+        super(message);
+    }
+
+    public InvalidArtOperationException(String message, Throwable cause) {
+        super(message, cause);
+    }
+
+    public InvalidArtOperationException(Throwable cause) {
+        super(cause);
+    }
+}

Api/src/main/java/edu/inventorym/model/InvalidTransOperationException.java

@@ -0,0 +1,17 @@
+package edu.inventorym.model;
+
+public class InvalidTransOperationException extends RuntimeException {
+    public InvalidTransOperationException(String message) {
+        super(message);
+    }
+
+    public InvalidTransOperationException(String message, Throwable cause) {
+        super(message, cause);
+    }
+
+    public InvalidTransOperationException(Throwable cause) {
+        super(cause);
+    }
+
+
+}

Api/src/main/java/edu/inventorym/model/InvalidTransactionException.java

@@ -0,0 +1,17 @@
+package edu.inventorym.model;
+
+public class InvalidTransactionException extends RuntimeException {
+    public InvalidTransactionException(String message) {
+        super(message);
+    }
+
+    public InvalidTransactionException(String message, Throwable cause) {
+        super(message, cause);
+    }
+
+    public InvalidTransactionException(Throwable cause) {
+        super(cause);
+    }
+
+
+}

Api/src/main/java/edu/inventorym/model/InventoryList.java

@@ -0,0 +1,9 @@
+package edu.inventorym.model;
+
+import java.util.ArrayList;
+
+public class InventoryList extends ArrayList<InventoryPiece> {
+    public InventoryList() {
+        super();
+    }
+}

Api/src/main/java/edu/inventorym/model/InventoryManager.java

@@ -0,0 +1,25 @@
+package edu.inventorym.model;
+
+import java.util.EnumSet;
+import java.util.Set;
+
+public class InventoryManager {
+
+    final static InventoryManager INSTANCE = new InventoryManager();
+
+    public static InventoryManager getInstance() {
+        return INSTANCE;
+    }
+
+    public InventoryList INVENTORY = new InventoryList();
+    public CustomerList CUSTOMERS = new CustomerList();
+    public TransactionList TRANSACTIONS = new TransactionList();
+
+    private InventoryManager() {
+    }   
+
+    public Set<InventoryType>  getArtPieceTypes(){
+        return EnumSet.allOf(InventoryType.class);
+    }
+
+}

Api/src/main/java/edu/inventorym/model/InventoryPiece.java

@@ -0,0 +1,84 @@
+package edu.inventorym.model;
+
+import java.time.ZonedDateTime;
+
+public abstract class InventoryPiece {
+    public String Id;
+    public float price;
+    public ZonedDateTime created;
+    public String title;
+
+    /**
+     * max 500 characters
+     */
+    public String description;
+
+    public String Author;
+
+    InventoryType iventoryType;
+
+    public InventoryPiece(InventoryType iventoryType) {
+        this.iventoryType = iventoryType;
+        this.created = ZonedDateTime.now();
+        this.Id = TransactionManager.generateTransactionRandomID(10);   
+    }
+
+    public InventoryPiece() {
+    }
+
+    public Boolean isArt(InventoryPiece piece) {
+        return false;
+    }
+
+    public String getType() {
+        return this.iventoryType.toString();
+    };
+
+    public String getId() {
+        return Id;
+    }
+
+    public void setId(String id) {
+        Id = id;
+    }
+
+    public float getPrice() {
+        return price;
+    }
+
+    public void setPrice(float price) {
+        this.price = price;
+    }
+
+    public ZonedDateTime getCreated() {
+        return created;
+    }
+
+    public void setCreated(ZonedDateTime created) {
+        this.created = created;
+    }
+
+    public String getTitle() {
+        return title;
+    }
+
+    public void setTitle(String title) {
+        this.title = title;
+    }
+
+    public String getDescription() {
+        return description;
+    }
+
+    public void setDescription(String description) {
+        this.description = description;
+    }
+
+    public String getAuthor() {
+        return Author;
+    }
+
+    public void setAuthor(String author) {
+        Author = author;
+    }
+}

Api/src/main/java/edu/inventorym/model/InventoryType.java

@@ -0,0 +1,5 @@
+package edu.inventorym.model;
+
+public enum InventoryType {
+    PAINTING, DRAWING, PRINT, SCULPTURE
+}

Api/src/main/java/edu/inventorym/model/Painting.java

@@ -0,0 +1,14 @@
+package edu.inventorym.model;
+
+public class Painting extends InventoryPiece {
+    int height;
+    int width;
+    String style;
+    String technique;
+    String category;
+
+    public Painting (){
+        super(InventoryType.PAINTING);
+    }
+
+}

Api/src/main/java/edu/inventorym/model/Print.java

@@ -0,0 +1,11 @@
+package edu.inventorym.model;
+
+public class Print extends InventoryPiece {
+
+    String openEditionType;
+    String category;
+
+    public Print(){
+        super(InventoryType.PRINT); 
+    }
+}

Api/src/main/java/edu/inventorym/model/Sculpture.java

@@ -0,0 +1,12 @@
+package edu.inventorym.model;
+
+public class Sculpture extends InventoryPiece {
+
+    String material;
+    float weight;
+
+    public Sculpture (){
+        super(InventoryType.SCULPTURE);
+    }
+
+}

Api/src/main/java/edu/inventorym/model/Transaction.java

@@ -0,0 +1,8 @@
+package edu.inventorym.model;
+
+import java.time.ZonedDateTime;
+
+public class Transaction {
+    ZonedDateTime created = ZonedDateTime.now();
+    ZonedDateTime completed = null;
+}

Api/src/main/java/edu/inventorym/model/TransactionList.java

@@ -0,0 +1,5 @@
+package edu.inventorym.model;
+
+public class TransactionList {
+
+}

Api/src/main/java/edu/inventorym/model/TransactionManager.java

@@ -0,0 +1,14 @@
+package edu.inventorym.model;
+
+import java.security.SecureRandom;
+import java.util.Base64;
+
+public class TransactionManager {
+
+    final public static String generateTransactionRandomID(int byteLength) {
+        SecureRandom secureRandom = new SecureRandom();
+        byte[] bytes = new byte[byteLength];
+        secureRandom.nextBytes(bytes);
+        return Base64.getUrlEncoder().withoutPadding().encodeToString(bytes);
+    }
+}

Api/uml/classdiagram.dot

@@ -0,0 +1,79 @@
+digraph ClassDiagram {
+    // Graph attributes
+    graph [
+        rankdir="BT",
+        splines=ortho,
+        fontname="Arial"
+    ];
+    node [
+        fontname="Arial",
+        fontsize=10,
+        shape=record,
+        style=filled,
+        fillcolor=lightyellow
+    ];
+    edge [
+        fontname="Arial",
+        fontsize=9
+    ];
+
+    // --- Clusters for Packages ---
+    subgraph cluster_edu_inventorym {
+        label="edu.inventorym";
+        style=filled;
+        color=lightgrey;
+        node [style=filled, color=white];
+
+        Api [
+            label="{class Api|+ main(String[]): void\l+ callerInterface(): void\l}"
+        ];
+
+        App [
+            label="{class App|+ main(String[]): void\l- routing(HttpRouting.Builder): void\l}"
+        ];
+
+        RpcDeserializer [
+            label="{class RpcDeserializer|+ main(String[]): void\l+ mapJsonToObjectList(String, Class<T>): List<T>\l}"
+        ];
+    }
+
+    subgraph cluster_edu_inventorym_model {
+        label="edu.inventorym.model";
+        style=filled;
+        color=lightgrey;
+        node [style=filled, color=white];
+
+        InventoryPiece [
+            // Inferred from RpcDeserializer.java
+            label="{interface\n«InventoryPiece»|+ getId(): int\l}"
+        ];
+
+        Drawing [
+            // Inferred from RpcDeserializer.java
+            label="{class Drawing|+ getId(): int\l}"
+        ];
+    }
+
+
+    // --- Relationships ---
+
+    // Inheritance (Drawing implements InventoryPiece)
+    InventoryPiece -> Drawing [
+        arrowhead=empty,
+        style=dashed,
+        label="implements"
+    ];
+
+    // Associations (Dependencies)
+    RpcDeserializer -> Drawing [
+        arrowhead=vee,
+        style=dashed,
+        label="uses"
+    ];
+
+    RpcDeserializer -> InventoryPiece [
+        arrowhead=vee,
+        style=dashed,
+        label="uses"
+    ];
+}

App/.vscode/settings.json

@@ -0,0 +1,3 @@
+{
+    "java.dependency.packagePresentation": "hierarchical"
+}

App/build.gradle

@@ -0,0 +1,41 @@
+/*
+ * This file was generated by the Gradle 'init' task.
+ *
+ */
+
+plugins {
+    // Apply the application plugin to add support for building a CLI application in Java.
+    id 'java'
+    id 'application'
+}
+
+// Apply a specific Java toolchain to ease working on different environments.
+java {
+    toolchain {
+        languageVersion = JavaLanguageVersion.of(24)
+    }
+}
+
+application {
+    // Define the main class for the application.
+    mainClass = 'edu.inventorym.RpcDeserializer'
+}
+
+repositories {
+    // Use Maven Central for resolving dependencies.
+    mavenCentral()
+}
+
+dependencies {
+    
+    implementation 'io.helidon:helidon:4.3.1'
+    implementation 'io.helidon.common:helidon-common:4.3.1'
+    implementation 'io.helidon.media:helidon-media-jsonb:3.2.12'
+    implementation 'io.helidon.media.jsonb:helidon-media-jsonb-common:1.4.16'
+    implementation 'io.helidon.media.jsonb:helidon-media-jsonb-server:1.4.16'
+    implementation 'jakarta.json.bind:jakarta.json.bind-api:3.0.1'
+    
+    implementation 'io.helidon.webserver:helidon-webserver:4.3.1'
+
+}
+

App/gradlew.bat

@@ -0,0 +1,94 @@
+@rem
+@rem Copyright 2015 the original author or authors.
+@rem
+@rem Licensed under the Apache License, Version 2.0 (the "License");
+@rem you may not use this file except in compliance with the License.
+@rem You may obtain a copy of the License at
+@rem
+@rem      https://www.apache.org/licenses/LICENSE-2.0
+@rem
+@rem Unless required by applicable law or agreed to in writing, software
+@rem distributed under the License is distributed on an "AS IS" BASIS,
+@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+@rem See the License for the specific language governing permissions and
+@rem limitations under the License.
+@rem
+@rem SPDX-License-Identifier: Apache-2.0
+@rem
+
+@if "%DEBUG%"=="" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%"=="" set DIRNAME=.
+@rem This is normally unused
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Resolve any "." and ".." in APP_HOME to make it shorter.
+for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if %ERRORLEVEL% equ 0 goto execute
+
+echo. 1>&2
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 1>&2
+echo. 1>&2
+echo Please set the JAVA_HOME variable in your environment to match the 1>&2
+echo location of your Java installation. 1>&2
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto execute
+
+echo. 1>&2
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME% 1>&2
+echo. 1>&2
+echo Please set the JAVA_HOME variable in your environment to match the 1>&2
+echo location of your Java installation. 1>&2
+
+goto fail
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=
+
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" -jar "%APP_HOME%\gradle\wrapper\gradle-wrapper.jar" %*
+
+:end
+@rem End local scope for the variables with windows NT shell
+if %ERRORLEVEL% equ 0 goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+set EXIT_CODE=%ERRORLEVEL%
+if %EXIT_CODE% equ 0 set EXIT_CODE=1
+if not ""=="%GRADLE_EXIT_CONSOLE%" exit %EXIT_CODE%
+exit /b %EXIT_CODE%
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega

App/src/main/java/edu/inventorym/App.java

@@ -0,0 +1,30 @@
+/*
+ * This source file was generated by the Gradle 'init' task
+ */
+package edu.inventorym;
+
+import io.helidon.http.Status;
+
+import io.helidon.webserver.WebServer;
+import io.helidon.webserver.http.HttpRouting;
+
+public class App{
+    public static void main(String[] args) {
+        WebServer.builder()
+            .routing(App::routing)
+            .build()
+            .start();
+    }
+
+    private static void routing(HttpRouting.Builder rules) {
+        rules.get("/hello", (req, res) -> res.send("Hello, World!"))
+             .get("/greet/{name}", (req, res) -> {
+                 String name = req.path().pathParameters().get("name");
+                 res.send("Hello, " + name + "!");
+             })
+             .post("/data", (req, res) -> {
+                 String body = req.content().as(String.class);
+                 res.send("Received: " + body);
+             });
+    }
+}

App/src/main/java/edu/inventorym/RpcDeserializer.java

@@ -0,0 +1,83 @@
+package edu.inventorym;
+
+import java.io.StringReader;
+import java.util.ArrayList;
+import java.util.List;
+
+import edu.inventorym.model.Drawing;
+import edu.inventorym.model.InventoryPiece;
+import jakarta.json.JsonArray;
+
+import jakarta.json.Json;
+import jakarta.json.bind.Jsonb;
+import jakarta.json.bind.JsonbBuilder;
+import jakarta.json.bind.JsonbConfig;
+
+public class RpcDeserializer {
+    public static void main(String[] args) {
+        String jsonResponse = "{\"jsonrpc\":\"2.0\",\"result\":19,\"id\":1}";
+        try{
+        // Deserialize the JSON string to a Java RpcResponse object
+        Jsonb jsonb = JsonbBuilder.create();
+        jsonResponse = jsonb.toJson(new Drawing());
+
+        System.out.println("json string: " + jsonResponse);
+
+
+        InventoryPiece response = jsonb.fromJson(jsonResponse, Drawing.class);
+
+        System.out.println("Result: " + response);
+        System.out.println("ID: " + response.getId());
+
+        }catch(Exception e){
+            e.printStackTrace();
+        }
+
+        List<Drawing> rpcs = new ArrayList<Drawing>();
+
+        try{
+        // Configure pretty-printing and other settings
+        JsonbConfig config = new JsonbConfig()
+                .withFormatting(true); // Enable pretty-printing
+        Jsonb jsonb = JsonbBuilder.create(config);
+
+        // Serialize using the custom configuration
+        String prettyJsonString = jsonb.toJson(new Drawing());
+
+        System.out.println("json string: " + prettyJsonString);
+
+        rpcs.add(new Drawing());
+        }catch(Exception e){
+
+        }
+
+        try {
+        // Create Jsonb and serialize
+        Jsonb jsonb = JsonbBuilder.create();
+        String result = jsonb.toJson(rpcs);
+
+        
+            // Deserialize back
+            rpcs = jsonb.fromJson(result, new ArrayList<Drawing>() {
+            }.getClass().getGenericSuperclass());
+
+        } catch (Exception e) {
+
+        } 
+      
+
+    }
+
+    public static <T> List<T> mapJsonToObjectList(String body, Class<T> baseClass) {
+    try (var reader = Json.createReader(new StringReader(body));
+            Jsonb jsonb = JsonbBuilder.create()){
+        JsonArray jsonArray = reader.readArray();
+
+        return jsonArray.stream()
+                .map(jsonValue -> jsonb.fromJson(jsonValue.toString(), baseClass))
+                .toList();
+    } catch (Exception e) {
+        return (List<T>) new ArrayList<Drawing>();
+    }
+}
+}

App/src/main/java/edu/inventorym/model/Customer.java

@@ -0,0 +1,13 @@
+package edu.inventorym.model;
+
+public class Customer {
+
+    String nameFirst;
+    String nameLast;
+    String mailing;
+    String phone;
+    String email;
+
+    public Customer(){}
+
+}

App/src/main/java/edu/inventorym/model/CustomerList.java

@@ -0,0 +1,5 @@
+package edu.inventorym.model;
+
+public class CustomerList {
+
+}

App/src/main/java/edu/inventorym/model/CustomerManager.java

@@ -0,0 +1,5 @@
+package edu.inventorym.model;
+
+public class CustomerManager {
+
+}

App/src/main/java/edu/inventorym/model/Drawing.java

@@ -0,0 +1,12 @@
+package edu.inventorym.model;
+
+public class Drawing extends InventoryPiece {
+
+    public String style;
+    public String technique;
+    public String category;
+
+    public Drawing() {
+        super(InventoryType.DRAWING);
+    }
+}

App/src/main/java/edu/inventorym/model/InvalidArtOperationException.java

@@ -0,0 +1,15 @@
+package edu.inventorym.model;
+
+public class InvalidArtOperationException extends RuntimeException {
+    public InvalidArtOperationException(String message) {
+        super(message);
+    }
+
+    public InvalidArtOperationException(String message, Throwable cause) {
+        super(message, cause);
+    }
+
+    public InvalidArtOperationException(Throwable cause) {
+        super(cause);
+    }
+}

App/src/main/java/edu/inventorym/model/InvalidTransOperationException.java

@@ -0,0 +1,17 @@
+package edu.inventorym.model;
+
+public class InvalidTransOperationException extends RuntimeException {
+    public InvalidTransOperationException(String message) {
+        super(message);
+    }
+
+    public InvalidTransOperationException(String message, Throwable cause) {
+        super(message, cause);
+    }
+
+    public InvalidTransOperationException(Throwable cause) {
+        super(cause);
+    }
+
+
+}

App/src/main/java/edu/inventorym/model/InvalidTransactionException.java

@@ -0,0 +1,17 @@
+package edu.inventorym.model;
+
+public class InvalidTransactionException extends RuntimeException {
+    public InvalidTransactionException(String message) {
+        super(message);
+    }
+
+    public InvalidTransactionException(String message, Throwable cause) {
+        super(message, cause);
+    }
+
+    public InvalidTransactionException(Throwable cause) {
+        super(cause);
+    }
+
+
+}

App/src/main/java/edu/inventorym/model/InventoryList.java

@@ -0,0 +1,9 @@
+package edu.inventorym.model;
+
+import java.util.ArrayList;
+
+public class InventoryList extends ArrayList<InventoryPiece> {
+    public InventoryList() {
+        super();
+    }
+}

App/src/main/java/edu/inventorym/model/InventoryManager.java

@@ -0,0 +1,25 @@
+package edu.inventorym.model;
+
+import java.util.EnumSet;
+import java.util.Set;
+
+public class InventoryManager {
+
+    final static InventoryManager INSTANCE = new InventoryManager();
+
+    public static InventoryManager getInstance() {
+        return INSTANCE;
+    }
+
+    public InventoryList INVENTORY = new InventoryList();
+    public CustomerList CUSTOMERS = new CustomerList();
+    public TransactionList TRANSACTIONS = new TransactionList();
+
+    private InventoryManager() {
+    }   
+
+    public Set<InventoryType>  getArtPieceTypes(){
+        return EnumSet.allOf(InventoryType.class);
+    }
+
+}

App/src/main/java/edu/inventorym/model/InventoryPiece.java

@@ -0,0 +1,84 @@
+package edu.inventorym.model;
+
+import java.time.ZonedDateTime;
+
+public abstract class InventoryPiece {
+    public String Id;
+    public float price;
+    public ZonedDateTime created;
+    public String title;
+
+    /**
+     * max 500 characters
+     */
+    public String description;
+
+    public String Author;
+
+    InventoryType iventoryType;
+
+    public InventoryPiece(InventoryType iventoryType) {
+        this.iventoryType = iventoryType;
+        this.created = ZonedDateTime.now();
+        this.Id = TransactionManager.generateTransactionRandomID(10);   
+    }
+
+    public InventoryPiece() {
+    }
+
+    public Boolean isArt(InventoryPiece piece) {
+        return false;
+    }
+
+    public String getType() {
+        return this.iventoryType.toString();
+    };
+
+    public String getId() {
+        return Id;
+    }
+
+    public void setId(String id) {
+        Id = id;
+    }
+
+    public float getPrice() {
+        return price;
+    }
+
+    public void setPrice(float price) {
+        this.price = price;
+    }
+
+    public ZonedDateTime getCreated() {
+        return created;
+    }
+
+    public void setCreated(ZonedDateTime created) {
+        this.created = created;
+    }
+
+    public String getTitle() {
+        return title;
+    }
+
+    public void setTitle(String title) {
+        this.title = title;
+    }
+
+    public String getDescription() {
+        return description;
+    }
+
+    public void setDescription(String description) {
+        this.description = description;
+    }
+
+    public String getAuthor() {
+        return Author;
+    }
+
+    public void setAuthor(String author) {
+        Author = author;
+    }
+}

App/src/main/java/edu/inventorym/model/InventoryType.java

@@ -0,0 +1,5 @@
+package edu.inventorym.model;
+
+public enum InventoryType {
+    PAINTING, DRAWING, PRINT, SCULPTURE
+}

App/src/main/java/edu/inventorym/model/Painting.java

@@ -0,0 +1,14 @@
+package edu.inventorym.model;
+
+public class Painting extends InventoryPiece {
+    int height;
+    int width;
+    String style;
+    String technique;
+    String category;
+
+    public Painting (){
+        super(InventoryType.PAINTING);
+    }
+
+}

App/src/main/java/edu/inventorym/model/Print.java

@@ -0,0 +1,11 @@
+package edu.inventorym.model;
+
+public class Print extends InventoryPiece {
+
+    String openEditionType;
+    String category;
+
+    public Print(){
+        super(InventoryType.PRINT); 
+    }
+}

App/src/main/java/edu/inventorym/model/Sculpture.java

@@ -0,0 +1,12 @@
+package edu.inventorym.model;
+
+public class Sculpture extends InventoryPiece {
+
+    String material;
+    float weight;
+
+    public Sculpture (){
+        super(InventoryType.SCULPTURE);
+    }
+
+}

App/src/main/java/edu/inventorym/model/Transaction.java

@@ -0,0 +1,8 @@
+package edu.inventorym.model;
+
+import java.time.ZonedDateTime;
+
+public class Transaction {
+    ZonedDateTime created = ZonedDateTime.now();
+    ZonedDateTime completed = null;
+}

App/src/main/java/edu/inventorym/model/TransactionList.java

@@ -0,0 +1,5 @@
+package edu.inventorym.model;
+
+public class TransactionList {
+
+}

App/src/main/java/edu/inventorym/model/TransactionManager.java

@@ -0,0 +1,14 @@
+package edu.inventorym.model;
+
+import java.security.SecureRandom;
+import java.util.Base64;
+
+public class TransactionManager {
+
+    final public static String generateTransactionRandomID(int byteLength) {
+        SecureRandom secureRandom = new SecureRandom();
+        byte[] bytes = new byte[byteLength];
+        secureRandom.nextBytes(bytes);
+        return Base64.getUrlEncoder().withoutPadding().encodeToString(bytes);
+    }
+}

gradle.properties

@@ -0,0 +1,5 @@
+# This file was generated by the Gradle 'init' task.
+# https://docs.gradle.org/current/userguide/build_environment.html#sec:gradle_configuration_properties
+
+org.gradle.configuration-cache=true
+

gradle/wrapper/gradle-wrapper.properties

@@ -0,0 +1,7 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-9.0.0-bin.zip
+networkTimeout=10000
+validateDistributionUrl=true
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists

gradlew

@@ -0,0 +1,251 @@
+#!/bin/sh
+
+#
+# Copyright © 2015 the original authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+
+##############################################################################
+#
+#   Gradle start up script for POSIX generated by Gradle.
+#
+#   Important for running:
+#
+#   (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is
+#       noncompliant, but you have some other compliant shell such as ksh or
+#       bash, then to run this script, type that shell name before the whole
+#       command line, like:
+#
+#           ksh Gradle
+#
+#       Busybox and similar reduced shells will NOT work, because this script
+#       requires all of these POSIX shell features:
+#         * functions;
+#         * expansions «$var», «${var}», «${var:-default}», «${var+SET}»,
+#           «${var#prefix}», «${var%suffix}», and «$( cmd )»;
+#         * compound commands having a testable exit status, especially «case»;
+#         * various built-in commands including «command», «set», and «ulimit».
+#
+#   Important for patching:
+#
+#   (2) This script targets any POSIX shell, so it avoids extensions provided
+#       by Bash, Ksh, etc; in particular arrays are avoided.
+#
+#       The "traditional" practice of packing multiple parameters into a
+#       space-separated string is a well documented source of bugs and security
+#       problems, so this is (mostly) avoided, by progressively accumulating
+#       options in "$@", and eventually passing that to Java.
+#
+#       Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS,
+#       and GRADLE_OPTS) rely on word-splitting, this is performed explicitly;
+#       see the in-line comments for details.
+#
+#       There are tweaks for specific operating systems such as AIX, CygWin,
+#       Darwin, MinGW, and NonStop.
+#
+#   (3) This script is generated from the Groovy template
+#       https://github.com/gradle/gradle/blob/HEAD/platforms/jvm/plugins-application/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
+#       within the Gradle project.
+#
+#       You can find Gradle at https://github.com/gradle/gradle/.
+#
+##############################################################################
+
+# Attempt to set APP_HOME
+
+# Resolve links: $0 may be a link
+app_path=$0
+
+# Need this for daisy-chained symlinks.
+while
+    APP_HOME=${app_path%"${app_path##*/}"}  # leaves a trailing /; empty if no leading path
+    [ -h "$app_path" ]
+do
+    ls=$( ls -ld "$app_path" )
+    link=${ls#*' -> '}
+    case $link in             #(
+      /*)   app_path=$link ;; #(
+      *)    app_path=$APP_HOME$link ;;
+    esac
+done
+
+# This is normally unused
+# shellcheck disable=SC2034
+APP_BASE_NAME=${0##*/}
+# Discard cd standard output in case $CDPATH is set (https://github.com/gradle/gradle/issues/25036)
+APP_HOME=$( cd -P "${APP_HOME:-./}" > /dev/null && printf '%s\n' "$PWD" ) || exit
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD=maximum
+
+warn () {
+    echo "$*"
+} >&2
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+} >&2
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "$( uname )" in                #(
+  CYGWIN* )         cygwin=true  ;; #(
+  Darwin* )         darwin=true  ;; #(
+  MSYS* | MINGW* )  msys=true    ;; #(
+  NONSTOP* )        nonstop=true ;;
+esac
+
+CLASSPATH="\\\"\\\""
+
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD=$JAVA_HOME/jre/sh/java
+    else
+        JAVACMD=$JAVA_HOME/bin/java
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD=java
+    if ! command -v java >/dev/null 2>&1
+    then
+        die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+fi
+
+# Increase the maximum file descriptors if we can.
+if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
+    case $MAX_FD in #(
+      max*)
+        # In POSIX sh, ulimit -H is undefined. That's why the result is checked to see if it worked.
+        # shellcheck disable=SC2039,SC3045
+        MAX_FD=$( ulimit -H -n ) ||
+            warn "Could not query maximum file descriptor limit"
+    esac
+    case $MAX_FD in  #(
+      '' | soft) :;; #(
+      *)
+        # In POSIX sh, ulimit -n is undefined. That's why the result is checked to see if it worked.
+        # shellcheck disable=SC2039,SC3045
+        ulimit -n "$MAX_FD" ||
+            warn "Could not set maximum file descriptor limit to $MAX_FD"
+    esac
+fi
+
+# Collect all arguments for the java command, stacking in reverse order:
+#   * args from the command line
+#   * the main class name
+#   * -classpath
+#   * -D...appname settings
+#   * --module-path (only if needed)
+#   * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables.
+
+# For Cygwin or MSYS, switch paths to Windows format before running java
+if "$cygwin" || "$msys" ; then
+    APP_HOME=$( cygpath --path --mixed "$APP_HOME" )
+    CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" )
+
+    JAVACMD=$( cygpath --unix "$JAVACMD" )
+
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    for arg do
+        if
+            case $arg in                                #(
+              -*)   false ;;                            # don't mess with options #(
+              /?*)  t=${arg#/} t=/${t%%/*}              # looks like a POSIX filepath
+                    [ -e "$t" ] ;;                      #(
+              *)    false ;;
+            esac
+        then
+            arg=$( cygpath --path --ignore --mixed "$arg" )
+        fi
+        # Roll the args list around exactly as many times as the number of
+        # args, so each arg winds up back in the position where it started, but
+        # possibly modified.
+        #
+        # NB: a `for` loop captures its iteration list before it begins, so
+        # changing the positional parameters here affects neither the number of
+        # iterations, nor the values presented in `arg`.
+        shift                   # remove old arg
+        set -- "$@" "$arg"      # push replacement arg
+    done
+fi
+
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
+# Collect all arguments for the java command:
+#   * DEFAULT_JVM_OPTS, JAVA_OPTS, and optsEnvironmentVar are not allowed to contain shell fragments,
+#     and any embedded shellness will be escaped.
+#   * For example: A user cannot expect ${Hostname} to be expanded, as it is an environment variable and will be
+#     treated as '${Hostname}' itself on the command line.
+
+set -- \
+        "-Dorg.gradle.appname=$APP_BASE_NAME" \
+        -classpath "$CLASSPATH" \
+        -jar "$APP_HOME/gradle/wrapper/gradle-wrapper.jar" \
+        "$@"
+
+# Stop when "xargs" is not available.
+if ! command -v xargs >/dev/null 2>&1
+then
+    die "xargs is not available"
+fi
+
+# Use "xargs" to parse quoted args.
+#
+# With -n1 it outputs one arg per line, with the quotes and backslashes removed.
+#
+# In Bash we could simply go:
+#
+#   readarray ARGS < <( xargs -n1 <<<"$var" ) &&
+#   set -- "${ARGS[@]}" "$@"
+#
+# but POSIX shell has neither arrays nor command substitution, so instead we
+# post-process each arg (as a line of input to sed) to backslash-escape any
+# character that might be a shell metacharacter, then use eval to reverse
+# that process (while maintaining the separation between arguments), and wrap
+# the whole thing up as a single "set" statement.
+#
+# This will of course break if any of these variables contains a newline or
+# an unmatched quote.
+#
+
+eval "set -- $(
+        printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" |
+        xargs -n1 |
+        sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' |
+        tr '\n' ' '
+    )" '"$@"'
+
+exec "$JAVACMD" "$@"

settings.gradle

@@ -0,0 +1,9 @@
+
+plugins {
+    // Apply the foojay-resolver plugin to allow automatic download of JDKs
+    id 'org.gradle.toolchains.foojay-resolver-convention' version '1.0.0'
+}
+
+rootProject.name = 'inventorym'
+include('App')
+include('Api')