Implement dummy catalogue to enable inventory prototype

The initializer is partially taken from videoshop.

src/main/java/catering/catalog/CatalogDataInitializer.java

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+/*
+ * 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.catalog;
+
+import static org.salespointframework.core.Currencies.EURO;
+
+import org.javamoney.moneta.Money;
+import org.salespointframework.core.DataInitializer;
+import org.springframework.core.annotation.Order;
+import org.springframework.stereotype.Component;
+import org.springframework.util.Assert;
+
+@Component
+@Order(20)
+class CatalogDataInitializer implements DataInitializer {
+
+	private final CateringCatalog cateringCatalog;
+
+	CatalogDataInitializer(CateringCatalog cateringCatalog) {
+		Assert.notNull(cateringCatalog, "CateringCatalog must not be null!");
+		this.cateringCatalog = cateringCatalog;
+	}
+
+	@Override
+	public void initialize() {
+		if (cateringCatalog.findAll().iterator().hasNext()) {
+			return;
+		}
+
+		cateringCatalog.save(new CatalogDummy("Brötchen Vollkorn", CatalogDummyType.CONSUMABLE, Money.of(1, EURO), Money.of(0.5, EURO),
+				Money.of(0.75, EURO)));
+		cateringCatalog.save(new CatalogDummy("Kerze Rot", CatalogDummyType.CONSUMABLE, Money.of(2, EURO), Money.of(1.5, EURO)));
+		cateringCatalog.save(new CatalogDummy("Brotschneidemaschine Power X 3000", CatalogDummyType.RENTABLE, Money.of(25, EURO), Money.of(10000, EURO)));
+	}
+}

src/main/java/catering/catalog/CatalogDummy.java

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+/*
+ * 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.catalog;
+
+import javax.money.MonetaryAmount;
+
+import org.salespointframework.catalog.Product;
+import org.springframework.util.Assert;
+
+import jakarta.persistence.Entity;
+
+@Entity
+public class CatalogDummy extends Product {
+	MonetaryAmount wholesalePrice;
+	// Optional<MonetaryAmount> promotionPrice;
+	// enterprise java goes brrr
+	MonetaryAmount promotionPrice;
+	CatalogDummyType type;
+
+	// enterprise java goes brrr
+	@SuppressWarnings({ "unused", "deprecation" })
+	private CatalogDummy() {
+	}
+
+	public CatalogDummy(String name, CatalogDummyType type, MonetaryAmount price, MonetaryAmount wholesalePrice,
+			MonetaryAmount promotionPrice) {
+		super(name, price);
+		Assert.notNull(type, "Type must not be null!");
+		Assert.notNull(wholesalePrice, "WholesalePricee must not be null!");
+		// PromotionPrice can be null.
+		this.type = type;
+		this.wholesalePrice = wholesalePrice;
+		this.promotionPrice = promotionPrice;
+	}
+
+	public CatalogDummy(String name, CatalogDummyType type, MonetaryAmount price, MonetaryAmount wholesalePrice) {
+		this(name, type, price, wholesalePrice, null);
+	}
+
+	public MonetaryAmount getWholesalePrice() {
+		return wholesalePrice;
+	}
+
+	public void setWholesalePrice(MonetaryAmount wholesalePrice) {
+		Assert.notNull(wholesalePrice, "WholesalePricee must not be null!");
+		this.wholesalePrice = wholesalePrice;
+	}
+
+	public MonetaryAmount getPromotionPrice() {
+		return promotionPrice;
+	}
+
+	public void setPromotionPrice(MonetaryAmount promotionPrice) {
+		this.promotionPrice = promotionPrice;
+	}
+
+	public CatalogDummyType getType() {
+		return this.type;
+	}
+
+	public void setType(CatalogDummyType type) {
+		Assert.notNull(type, "Type must not be null!");
+		this.type = type;
+	}
+}

src/main/java/catering/catalog/CatalogDummyType.java

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+/*
+ * 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.catalog;
+
+public enum CatalogDummyType {
+	CONSUMABLE,
+	RENTABLE,
+}

src/main/java/catering/catalog/CateringCatalog.java

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+/*
+ * 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.catalog;
+
+import org.salespointframework.catalog.Catalog;
+import org.springframework.data.domain.Sort;
+
+public interface CateringCatalog extends Catalog<CatalogDummy> {
+	static final Sort DEFAULT_SORT = Sort.sort(CatalogDummy.class).by(CatalogDummy::getId).descending();
+}