From 29db6c018ccba72013efd479abc9abda57c38fb1 Mon Sep 17 00:00:00 2001
From: Yannik Bretschneider <ybretsch@gmail.com>
Date: Sun, 6 Jun 2021 03:21:21 +0200
Subject: [PATCH] feat: implemented aquiring characters of random order in
 CharacterConfig

---
 .../gamelibrary/config/CharacterConfig.java     | 17 ++++++++++++++++-
 .../json/config/CharacterConfigJSONTest.java    | 15 +++++++++++++++
 2 files changed, 31 insertions(+), 1 deletion(-)

diff --git a/src/main/java/uulm/teamname/marvelous/gamelibrary/config/CharacterConfig.java b/src/main/java/uulm/teamname/marvelous/gamelibrary/config/CharacterConfig.java
index 904f0b1..7f5e279 100644
--- a/src/main/java/uulm/teamname/marvelous/gamelibrary/config/CharacterConfig.java
+++ b/src/main/java/uulm/teamname/marvelous/gamelibrary/config/CharacterConfig.java
@@ -4,8 +4,11 @@ import com.fasterxml.jackson.annotation.JsonIgnore;
 import jakarta.validation.Valid;
 import jakarta.validation.constraints.NotEmpty;
 import jakarta.validation.constraints.Size;
+import uulm.teamname.marvelous.gamelibrary.Tuple;
 
 import java.util.*;
+import java.util.concurrent.ThreadLocalRandom;
+import java.util.stream.Collectors;
 
 /**
  * POJO describing the CharacterConfig as defined by the standard document.
@@ -14,7 +17,7 @@ public class CharacterConfig {
 
     @NotEmpty
     @Valid
-    @Size(min = 12, message = "has less than 12 characters")
+    @Size(min = 24, message = "has less than 24 characters")
     public CharacterProperties[] characters;
 
     @JsonIgnore private Map<String, CharacterProperties> propertyMap;
@@ -38,6 +41,18 @@ public class CharacterConfig {
         return unmodifiablePropertyMap;
     }
 
+    @JsonIgnore
+    public Tuple<CharacterProperties[], CharacterProperties[]> getDisjointSetsOfPropertiesOfSize(int size) {
+        if ((size * 2) > characters.length) {
+            return null;
+        } else {
+            var characterList = Arrays.asList(this.characters);
+            Collections.shuffle(characterList);
+            return Tuple.of(characterList.subList(0, size).toArray(new CharacterProperties[0]),
+                    characterList.subList(size, 2 * size).toArray(new CharacterProperties[0]));
+        }
+    }
+
     @Override
     public boolean equals(Object o) {
         if (this == o) return true;
diff --git a/src/test/java/uulm/teamname/marvelous/gamelibrary/json/config/CharacterConfigJSONTest.java b/src/test/java/uulm/teamname/marvelous/gamelibrary/json/config/CharacterConfigJSONTest.java
index 276e5db..ac9c43b 100644
--- a/src/test/java/uulm/teamname/marvelous/gamelibrary/json/config/CharacterConfigJSONTest.java
+++ b/src/test/java/uulm/teamname/marvelous/gamelibrary/json/config/CharacterConfigJSONTest.java
@@ -4,9 +4,12 @@ import com.fasterxml.jackson.core.JsonProcessingException;
 import com.fasterxml.jackson.databind.ObjectMapper;
 import net.jqwik.api.*;
 import net.jqwik.api.lifecycle.BeforeProperty;
+import org.junit.jupiter.api.Test;
 import uulm.teamname.marvelous.gamelibrary.config.CharacterConfig;
 import uulm.teamname.marvelous.gamelibrary.config.CharacterProperties;
+import uulm.teamname.marvelous.gamelibrary.json.JSON;
 
+import java.util.Arrays;
 import java.util.HashSet;
 import java.util.concurrent.ThreadLocalRandom;
 
@@ -260,6 +263,18 @@ class CharacterConfigJSONTest {
             }
             """;
 
+    @Test
+    void disjointSubsetGenerationWorks() {
+        var characterConfig = JSON.parseCharacterConfig(json);
+        System.out.println(characterConfig.get().characters.length);
+        var tuple = characterConfig.get().getDisjointSetsOfPropertiesOfSize(6);
+        assertThat(tuple.item1).doesNotHaveDuplicates().hasSize(6);
+        assertThat(tuple.item2).doesNotHaveDuplicates().hasSize(6);
+        assertThat(tuple.item1)
+                .doesNotContainAnyElementsOf(Arrays.asList(tuple.item2));
+        System.out.println(tuple);
+    }
+
     ObjectMapper mapper;
 
     @BeforeProperty