backend:deck.ts

This commit involves one preperatory commit : adding wild color to CardColors

Added deck generation function to initialize the deck according to given constraints

The function generates cards and push them the deck array generating cards of each color and also wild cards

Also have checked the deck composition with jest tests

Fixes :#1

backend/tests/deck.test.ts

@@ -62,24 +62,3 @@ describe('shuffle function', () => {
         expect(orderChanged).toBe(true);
     });
 });
-describe('shuffle function', () => {
-    test('should change order of elements', () => {
-        // Create a mock deck
-        const deck = [
-            makeCard('number', 'red', '1'),
-            makeCard('number', 'blue', '2'),
-            makeCard('number', 'red', '1'),
-            makeCard('number', 'yellow', '1'),
-        ];
-
-        // Create a copy of the deck for comparison
-        const originalDeck = [...deck];
-        shuffle(deck);
-
-        // Check that the order of elements has changed
-        const orderChanged = deck.some(
-            (card, index) => card !== originalDeck[index]
-        );
-        expect(orderChanged).toBe(true);
-    });
-});

backend/uno-game-engine/deck.ts

@@ -84,6 +84,13 @@ export function makeCard(
     if (!sameCardCount[id]) sameCardCount[id] = 0;
     sameCardCount[id]++; // increment the count of same cards to assign unique id
 
+    const uid = `${id}-${sameCardCount[id]}`;
+    return { type, color, value, id: uid };
+    const id = `card-${type}-${color}-${value}`;
+
+    if (!sameCardCount[id]) sameCardCount[id] = 0;
+    sameCardCount[id]++; // increment the count of same cards to assign unique id
+
     const uid = `${id}-${sameCardCount[id]}`;
     return { type, color, value, id: uid };
 }
@@ -98,4 +105,10 @@ export function shuffle(deck: Array<UNOCard>) {
         const j = Math.floor(Math.random() * i);
         [deck[i], deck[j]] = [deck[j], deck[i]];
     }
+export function shuffle(deck: Array<UNOCard>) {
+    // Fisher-Yates shuffle algorithm to shuffle card deck
+    for (let i = deck.length - 1; i > 0; i--) {
+        const j = Math.floor(Math.random() * i);
+        [deck[i], deck[j]] = [deck[j], deck[i]];
+    }
 }