Implement inventory prototype

src/main/java/catering/inventory/InventoryController.java

@@ -0,0 +1,107 @@
+/*
+ * Copyright (C) 2023 Simon Bruder
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+package catering.inventory;
+
+import org.salespointframework.catalog.Product;
+import org.salespointframework.inventory.UniqueInventory;
+import org.salespointframework.inventory.UniqueInventoryItem;
+import org.springframework.stereotype.Controller;
+import org.springframework.ui.Model;
+import org.springframework.util.Assert;
+import org.springframework.validation.Errors;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.PostMapping;
+
+import catering.catalog.CatalogDummy;
+import catering.catalog.CateringCatalog;
+import jakarta.validation.Valid;
+
+@Controller
+class InventoryController {
+	private final UniqueInventory<UniqueInventoryItem> inventory;
+	private final CateringCatalog cateringCatalog;
+
+	InventoryController(UniqueInventory<UniqueInventoryItem> inventory, CateringCatalog cateringCatalog) {
+		Assert.notNull(inventory, "Inventory must not be null!");
+		Assert.notNull(inventory, "CateringCatalog must not be null!");
+		this.inventory = inventory;
+		this.cateringCatalog = cateringCatalog;
+	}
+
+	@GetMapping("/inventory")
+	String list(Model model) {
+		model.addAttribute("inventory", inventory.findAll());
+
+		return "inventory";
+	}
+
+	@GetMapping("/inventory/edit/{pid}")
+	String edit(Model model, @PathVariable Product pid) {
+		model.addAttribute("product", pid);
+		model.addAttribute("item", inventory.findByProduct(pid).get());
+
+		return "inventory-mutate";
+	}
+
+	@PostMapping("/inventory/edit/{pid}")
+	String edit(@Valid InventoryMutateForm form, Errors result, @PathVariable Product pid) {
+		if (result.hasErrors()) {
+			return "redirect:/inventory/edit/" + pid.getId();
+		}
+		CatalogDummy product = (CatalogDummy) pid;
+		UniqueInventoryItem item = inventory.findByProduct(pid).get();
+
+		product.setName(form.getName());
+		product.setType(form.getType());
+		product.setPrice(form.getRetailPrice());
+		product.setWholesalePrice(form.getWholesalePrice());
+		product.setPromotionPrice(form.getPromotionPrice().orElse(null));
+
+		product = cateringCatalog.save(product);
+
+		// no setQuantity in enterprise java
+		// (though returing a modified object is actually nice)
+		inventory.save(item.increaseQuantity(form.getQuantity().subtract(item.getQuantity())));
+		return "redirect:/inventory";
+	}
+
+	@GetMapping("/inventory/add")
+	String add() {
+		return "inventory-mutate";
+	}
+
+	@PostMapping("/inventory/add")
+	String add(@Valid InventoryMutateForm form, Errors result) {
+		if (result.hasErrors()) {
+			return "inventory-mutate";
+		}
+		inventory.save(new UniqueInventoryItem(
+				cateringCatalog.save(new CatalogDummy(form.getName(), form.getType(), form.getRetailPrice(),
+						form.getWholesalePrice(), form.getPromotionPrice().orElse(null))),
+				form.getQuantity()));
+		return "redirect:/inventory";
+	}
+
+	@GetMapping("/inventory/delete/{pid}")
+	String delete(@PathVariable Product pid) {
+		UniqueInventoryItem item = inventory.findByProduct(pid).get();
+		inventory.delete(item);
+		cateringCatalog.delete((CatalogDummy) pid);
+		return "redirect:/inventory";
+	}
+}

src/main/java/catering/inventory/InventoryInizializer.java

@@ -0,0 +1,49 @@
+/*
+ * Copyright (C) 2023 Simon Bruder
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+package catering.inventory;
+
+import org.salespointframework.core.DataInitializer;
+import org.salespointframework.inventory.UniqueInventory;
+import org.salespointframework.inventory.UniqueInventoryItem;
+import org.salespointframework.quantity.Quantity;
+import org.springframework.stereotype.Component;
+import org.springframework.util.Assert;
+
+import catering.catalog.CateringCatalog;
+
+@Component
+class InventoryInitializer implements DataInitializer {
+	private final UniqueInventory<UniqueInventoryItem> inventory;
+	private final CateringCatalog cateringCatalog;
+
+	InventoryInitializer(UniqueInventory<UniqueInventoryItem> inventory, CateringCatalog cateringCatalog) {
+		Assert.notNull(inventory, "Inventory must not be null!");
+		Assert.notNull(cateringCatalog, "CateringCatalog must not be null!");
+
+		this.inventory = inventory;
+		this.cateringCatalog = cateringCatalog;
+	}
+
+	@Override
+	public void initialize() {
+		cateringCatalog.findAll().forEach(product -> {
+			if (inventory.findByProduct(product).isEmpty()) {
+				inventory.save(new UniqueInventoryItem(product, Quantity.of(10)));
+			}
+		});
+	}
+}

src/main/java/catering/inventory/InventoryMutateForm.java

@@ -0,0 +1,74 @@
+/*
+ * Copyright (C) 2023 Simon Bruder
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+package catering.inventory;
+
+import static org.salespointframework.core.Currencies.EURO;
+
+import java.util.Optional;
+
+import javax.money.MonetaryAmount;
+
+import org.javamoney.moneta.Money;
+import org.salespointframework.quantity.Quantity;
+
+import catering.catalog.CatalogDummyType;
+import jakarta.validation.constraints.NotEmpty;
+import jakarta.validation.constraints.NotNull;
+import jakarta.validation.constraints.PositiveOrZero; // NonNegative in enterprise java
+
+class InventoryMutateForm {
+	private final @NotNull CatalogDummyType type;
+	private final @NotEmpty String name;
+	private final @NotNull Quantity quantity;
+	private final @NotNull MonetaryAmount wholesalePrice, retailPrice;
+	private final @NotNull Optional<MonetaryAmount> promotionPrice;
+
+	public InventoryMutateForm(@NotNull CatalogDummyType type, @NotEmpty String name,
+			@NotNull Quantity quantity, @PositiveOrZero double wholesalePrice, @PositiveOrZero double retailPrice,
+			@PositiveOrZero Optional<Double> promotionPrice) {
+		this.type = type;
+		this.name = name;
+		this.quantity = quantity;
+		this.wholesalePrice = Money.of(wholesalePrice, EURO);
+		this.retailPrice = Money.of(retailPrice, EURO);
+		this.promotionPrice = promotionPrice.map(price -> (MonetaryAmount) Money.of(price, EURO));
+	}
+
+	public CatalogDummyType getType() {
+		return type;
+	}
+
+	public String getName() {
+		return name;
+	}
+
+	public Quantity getQuantity() {
+		return quantity;
+	}
+
+	public MonetaryAmount getWholesalePrice() {
+		return wholesalePrice;
+	}
+
+	public MonetaryAmount getRetailPrice() {
+		return retailPrice;
+	}
+
+	public Optional<MonetaryAmount> getPromotionPrice() {
+		return promotionPrice;
+	}
+}

src/main/resources/templates/inventory-mutate.html

@@ -0,0 +1,42 @@
+<!DOCTYPE html>
+<html xmlns:th="http://www.thymeleaf.org"
+	xmlns:sec="http://www.thymeleaf.org/extras/spring-security"
+	<head>
+	</head>
+	<body>
+		<h1>Lagerverwaltung</h1>
+		<h2 th:text="${'Produkt ' + (product == null ? 'anlegen' : 'bearbeiten')}"></h2>
+		<!-- TODO: maybe migrate to th:field (which is a pain) -->
+		<form method="post">
+			<div>
+				<label for="type">Typ</label>
+				<input type="radio" name="type" th:each="type : ${T(catering.catalog.CatalogDummyType).values()}" th:value="${type}" th:text="${type}" th:checked="${type.name() == product?.type?.name()}" required/>
+			</div>
+			<div>
+				<label for="name">Produktname</label>
+				<input type="text" name="name" th:value="${product?.name}" required/>
+			</div>
+			<div>
+				<label for="quantity">Menge im Bestand</label>
+				<input type="number" name="quantity" th:value="${item?.quantity}" required/>
+			</div>
+			<div>
+				<label for="wholesalePrice">Einkaufspreis</label>
+				<input type="number" name="wholesalePrice" step="0.01" min="0" th:value="${#numbers.formatDecimal(product?.wholesalePrice?.getNumber()?.doubleValueExact(), 1, 2)}" required/>
+			</div>
+			<div>
+				<label for="retailPrice">UVP</label>
+				<input type="number" name="retailPrice" step="0.01" min="0" th:value="${#numbers.formatDecimal(product?.price?.getNumber()?.doubleValueExact(), 1, 2)}" required/>
+			</div>
+			<div>
+				<!-- FIXME darf nur bei angeboten als teil von partyservice angezeigt werden -->
+				<label for="promotionPrice">Aktionspreis</label>
+				<input type="number" name="promotionPrice" step="0.01" min="0" th:value="${#numbers.formatDecimal(product?.promotionPrice?.getNumber()?.doubleValueExact(), 1, 2)}"/>
+			</div>
+			<div>
+				<button type="submit" th:text="${product == null ? 'Hinzufügen' : 'Bearbeiten'}"></button>
+			</div>
+			<!-- KANN: Bild und Beschreibungstext -->
+		</form>
+	</body>
+</html>

src/main/resources/templates/inventory.html

@@ -0,0 +1,44 @@
+<!DOCTYPE html>
+<html xmlns:th="http://www.thymeleaf.org"
+	xmlns:sec="http://www.thymeleaf.org/extras/spring-security"
+	<head>
+	</head>
+	<body>
+		<h1>Lagerverwaltung</h1>
+		<table border>
+			<thead>
+				<!-- TODO: i18n? -->
+				<tr>
+					<th>ID</th> <!-- FIXME UUIDs are long -->
+					<th>Produktname</th>
+					<th>Menge</th>
+					<th>Einkaufspreis</th>
+					<th>UVP</th>
+					<th>Gesamtwert</th>
+					<th></th> <!-- FIXME: this should be replaced by something more reasonable once CSS comes into play -->
+				</tr>
+			</thead>
+			<tbody>
+				<tr th:each="item : ${inventory}">
+					<td th:text="${item.id}"></td>
+					<td th:text="${item.product.name}"></td>
+					<td th:text="${item.quantity}"></td>
+					<td th:text="${item.product.wholesalePrice}"></td>
+					<td th:if="${item.product.promotionPrice != null}"><del th:text="${item.product.price}"></del> <span th:text="${item.product.promotionPrice}"></span></td>
+					<td th:if="${item.product.promotionPrice == null}" th:text="${item.product.price}"></td>
+					<td th:text="${item.product.wholesalePrice.multiply(item.quantity.getAmount())}"></td>
+					<td><a th:href="@{/inventory/edit/{id}(id=${item.product.id})}"><button>✏</button></a><a th:href="@{/inventory/delete/{id}(id=${item.product.id})}"><button>X</button></a></td>
+				</tr>
+				<tr>
+					<td><a href="/inventory/add"><button>⊕</button></a></td>
+					<td></td>
+					<td></td>
+					<td></td>
+					<td></td>
+					<td></td><!-- TODO (optional): add total monetary value of inventory -->
+					<td></td>
+				</tr>
+			</tbody>
+		</table>
+	</body>
+</html>