Calculations (#204)

* add support for calculations in neu searchbar

* moved calculation in search bar into own class

* saving one line out of 3k lines

* brackets change everything

1 files changed, 55 insertions, 0 deletions

diff --git a/src/main/java/io/github/moulberry/notenoughupdates/miscgui/NeuSearchCalculator.java b/src/main/java/io/github/moulberry/notenoughupdates/miscgui/NeuSearchCalculator.java
new file mode 100644
index 00000000..f7306f2a
--- /dev/null
+++ b/src/main/java/io/github/moulberry/notenoughupdates/miscgui/NeuSearchCalculator.java
@@ -0,0 +1,55 @@
+/*
+ * Copyright (C) 2022 NotEnoughUpdates contributors
+ *
+ * This file is part of NotEnoughUpdates.
+ *
+ * NotEnoughUpdates is free software: you can redistribute it
+ * and/or modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation, either
+ * version 3 of the License, or (at your option) any later version.
+ *
+ * NotEnoughUpdates 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with NotEnoughUpdates. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package io.github.moulberry.notenoughupdates.miscgui;
+
+import io.github.moulberry.notenoughupdates.NotEnoughUpdates;
+import io.github.moulberry.notenoughupdates.util.Calculator;
+
+import java.math.BigDecimal;
+import java.text.DecimalFormat;
+
+public class NeuSearchCalculator {
+
+	static String lastInput = "";
+	static String lastResult = null;
+
+	public static String format(String text) {
+		String calculate = calculateInSearchBar(text);
+		return text + (calculate != null ? " §e= §a" + calculate : "");
+	}
+
+	private static String calculateInSearchBar(String input) {
+		int calculationMode = NotEnoughUpdates.INSTANCE.config.misc.calculationMode;
+		if (input.isEmpty() || calculationMode == 0 || (calculationMode == 1 && !input.startsWith("!"))) return null;
+		input = calculationMode == 1 ? input.substring(1) : input;
+
+		if (!lastInput.equals(input)) {
+			lastInput = input;
+			try {
+				BigDecimal calculate = Calculator.calculate(input);
+				lastResult = new DecimalFormat("#,##0.##").format(calculate);
+			} catch (Calculator.CalculatorException ignored) {
+				lastResult = null;
+			}
+		}
+
+		return lastResult;
+	}
+}