From c31d4cbb1f69e14d9d88db474cd7e5e14f763acb Mon Sep 17 00:00:00 2001
From: leriomaggio <valeriomaggio@gmail.com>
Date: Tue, 26 Oct 2021 17:30:28 +0200
Subject: [PATCH] Implementing (deep) deck comparison based on similarity of
 parts (cardPool)

---
 forge-core/src/main/java/forge/deck/Deck.java | 28 +++++++++++++++++++
 1 file changed, 28 insertions(+)

diff --git a/forge-core/src/main/java/forge/deck/Deck.java b/forge-core/src/main/java/forge/deck/Deck.java
index 02b6ee3bf76..139d80183fb 100644
--- a/forge-core/src/main/java/forge/deck/Deck.java
+++ b/forge-core/src/main/java/forge/deck/Deck.java
@@ -539,4 +539,32 @@ public class Deck extends DeckBase implements Iterable<Entry<DeckSection, CardPo
     public Deck getHumanDeck() {
         return this;
     }
+
+    /** {@inheritDoc} */
+    @Override
+    public boolean equals(final Object o) {
+        if (o instanceof Deck) {
+            final DeckBase dbase = (DeckBase) o;
+            boolean deckBaseEquals = super.equals(dbase);
+            if (!deckBaseEquals)
+                return false;
+            // ok so far we made sure they do have the same name. Now onto comparing parts
+            final Deck d = (Deck) o;
+            for (DeckSection deckSection : this.parts.keySet()) {
+                CardPool otherPool = d.get(deckSection);
+                CardPool thisPool = this.parts.get(deckSection);
+                if (!thisPool.equals(otherPool))  // this also accounts for null from d.get
+                    return false;
+            }
+            // if we reached this far, it means all sections in this.parts are identical to d.parts
+            // now let's consider the other way around, as in any section in d not in parts.
+            for (DeckSection deckSection: d.parts.keySet()){
+                CardPool otherPool = d.get(deckSection);
+                if (!this.parts.containsKey(deckSection) && otherPool.countAll() > 0)
+                    return false;
+            }
+            return true;
+        }
+        return false;
+    }
 }
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