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75 lines
1.8 KiB
75 lines
1.8 KiB
package com.mousetech.gourmetj.utils;
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import java.io.ByteArrayOutputStream;
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import java.io.PrintWriter;
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import java.util.List;
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import org.apache.commons.lang3.StringUtils;
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import org.primefaces.model.ByteArrayContent;
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import org.primefaces.model.StreamedContent;
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import com.mousetech.gourmetj.ShopIngredient;
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/**
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* Construct a Primefaces file output content for an ingredient
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* list in YAML format.
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*
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* @author timh
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* @since Jan 15, 2022
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*/
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public class YamlShoppingList {
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public static StreamedContent createDownload(
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List<ShopIngredient> ingredientList) {
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ByteArrayOutputStream ary = new ByteArrayOutputStream();
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PrintWriter wtr = new PrintWriter(ary);
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wtr.println("---");
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formatContent(wtr, ingredientList);
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wtr.close();
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byte[] bas = ary.toByteArray();
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StreamedContent dlList = new ByteArrayContent(bas,
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"text/text", "shopping_list.yml");
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return dlList;
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}
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/**
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* Output line items in the ingredient list with topics for
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* each Shopping Category.
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*
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* @param wtr Output Writer
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* @param ingredientList Ingredient list to output.
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*/
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private static void formatContent(PrintWriter wtr,
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List<ShopIngredient> ingredientList) {
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String oldShopcat = null;
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for (ShopIngredient ing : ingredientList) {
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String newShopcat = ing.getShopCat();
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if (StringUtils.isBlank(newShopcat)) {
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newShopcat = "Unassigned";
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}
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if ( ing.isInPantry()) {
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// Don't put pantry items in list.
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continue;
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}
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if (!StringUtils.equals(newShopcat, oldShopcat)) {
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wtr.println(newShopcat + ":");
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oldShopcat = newShopcat;
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}
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wtr.print(" - ");
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String displa = ing.getDisplayAmount();
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wtr.print(displa);
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if (!displa.isBlank()) {
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wtr.print(' ');
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}
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String unit = ing.getUnit();
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if (StringUtils.isNotBlank(unit)) {
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wtr.print(unit);
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wtr.print(' ');
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}
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wtr.println(ing.getItem());
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}
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}
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}
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