From 8e70c7458927f64ff5e269f035223fd4a63c98ff Mon Sep 17 00:00:00 2001
From: jorge <uo289845@uniovi.es>
Date: Fri, 26 Apr 2024 14:06:08 +0200
Subject: [PATCH] The answers with decimals now always show two decimals

---
 .../answersAreNotEntites/SizeGenerator.java   |  3 +-
 .../formatAnswers/SetAmountOfDecimals.java    | 62 +++++++++++++++++++
 2 files changed, 64 insertions(+), 1 deletion(-)
 create mode 100644 questionGenerator/src/main/java/questionGenerator/question/answers/formatAnswers/SetAmountOfDecimals.java

diff --git a/questionGenerator/src/main/java/questionGenerator/generator/answersAreNotEntites/SizeGenerator.java b/questionGenerator/src/main/java/questionGenerator/generator/answersAreNotEntites/SizeGenerator.java
index 3e321036..1e9b7997 100644
--- a/questionGenerator/src/main/java/questionGenerator/generator/answersAreNotEntites/SizeGenerator.java
+++ b/questionGenerator/src/main/java/questionGenerator/generator/answersAreNotEntites/SizeGenerator.java
@@ -12,6 +12,7 @@
 import main.java.questionGenerator.question.answers.formatAnswers.AddUnitsFormater;
 import main.java.questionGenerator.question.answers.formatAnswers.EmbellishNumbersFormater;
 import main.java.questionGenerator.question.answers.formatAnswers.RemoveEFromNumber;
+import main.java.questionGenerator.question.answers.formatAnswers.SetAmountOfDecimals;
 
 public class SizeGenerator extends AnswersAreNotEntites {
 	
@@ -45,7 +46,7 @@ private String getRightAnswerEntity(String url) {
 	@Override
 	public List<String> decorateAnswers(List<String> answers) {
 		AnswerFormater formater = new RemoveEFromNumber(new EmbellishNumbersFormater(
-			new AddUnitsFormater(null, "km^2")));
+				new SetAmountOfDecimals(new AddUnitsFormater(null, "km^2"), 2)));
 		return formater.format(answers);
 	}
 
diff --git a/questionGenerator/src/main/java/questionGenerator/question/answers/formatAnswers/SetAmountOfDecimals.java b/questionGenerator/src/main/java/questionGenerator/question/answers/formatAnswers/SetAmountOfDecimals.java
new file mode 100644
index 00000000..9c0a1430
--- /dev/null
+++ b/questionGenerator/src/main/java/questionGenerator/question/answers/formatAnswers/SetAmountOfDecimals.java
@@ -0,0 +1,62 @@
+package main.java.questionGenerator.question.answers.formatAnswers;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import main.java.questionGenerator.question.answers.AbstractFormater;
+import main.java.questionGenerator.question.answers.AnswerFormater;
+
+public class SetAmountOfDecimals extends AbstractFormater {
+	
+	private int amount;
+
+	public SetAmountOfDecimals(AnswerFormater formater, int amount) {
+		super(formater);
+		this.amount = amount;
+	}
+
+	@Override
+	public List<String> format(List<String> answers) {
+		List<String> result = new ArrayList<>();
+		for(String answer : answers) {
+			String[] splitted = split(answer);
+			if(splitted.length==0)
+				result.add(answer);
+			else {
+				String decimalPart = formatDecimalPart(splitted[1]);
+				result.add(splitted[0] + '.' + decimalPart);
+			}
+		}
+		return end(result);
+	}
+	
+	private String[] split(String answer) {
+		String[] result = {"", ""};
+		int position = 0;
+		for(char c : answer.toCharArray()) {
+			if(c=='.')
+				position = 1;
+			else
+				result[position] += c;
+		}
+		return result;
+	}
+	
+	private String formatDecimalPart(String decimalPart) {
+		if(decimalPart.length()<amount) {
+			int diference = amount - decimalPart.length();
+			for(int i=0; i<diference; i++) {
+				decimalPart += "0";
+			}
+		}
+		else if(decimalPart.length()>amount) {
+			char[] aux = decimalPart.toCharArray();
+			decimalPart = "";
+			for(int i=0; i<amount; i++) {
+				decimalPart += aux[i];
+			}
+		}
+		return decimalPart;
+	}
+
+}
\ No newline at end of file