deck: Implement unique identification of cards by assigning an id to …

…each card

Created an id as card-type-color-value
To uniquely identify the same type color value card, I have also created a sameCardCount array that will to uniquely identify these card
Finnaly created a unique id card-type-color-value-sameCardCount[id]
Changed id typed to String in types.d.ts

backend/uno-game-engine/deck.ts

@@ -16,6 +16,7 @@ const values = [
 ];
 const specialCards = ['wild', 'draw4'];
 const deck = [];
+const sameCardCount = []; // to keep track of same cards in assigning unique id to each card
 
 /**    
  * In a standard UNO deck, there are 108 cards. Here's the breakdown:
@@ -57,7 +58,13 @@ export default function getShuffledCardDeck(): Array<UNOCard> {
  */
 function makeCard(type: CardType, color: CardColor, value: CardValue): UNOCard {
     //todo: Implement unique identification of cards by assigning an id to each card
-    return { type, color, value, id: undefined };
+    let id = `card-${type}-${color}-${value}`;
+
+    if (!sameCardCount[id]) sameCardCount[id] = 0;
+    sameCardCount[id]++; // increment the count of same cards to assign unique id
+
+    let uid = `${id}-${sameCardCount[id]}`;
+    return { type, color, value, id: uid };
 }
 
 /**

backend/uno-game-engine/types.d.ts

@@ -20,5 +20,5 @@ type UNOCard = {
     type: CardType;
     color: CardColor;
     value: CardValue;
-    id: undefined;
+    id: String;
 };