written function for get-card-value

Author: leerogerfn

implement-and-rewrite-tests/implement/3-get-card-value.js

@@ -22,7 +22,45 @@
 // Acceptance criteria:
 // After you have implemented the function, write tests to cover all the cases, and
 // execute the code to ensure all tests pass.
+//const rank = ["A", "2", "3", "4", "5", "6", "7", "8", "9", "10", "J", "Q", "K"]
+//const suit = ["♠", "♥", "♦", "♣"];
+//console.log(suit[1]);
+//const card = `${number}${suit}`
+
+//if the user input the rank only, the output is throwing an error.
+//expect the format is 2 digit and follow the suit.
+//validate input example: 3♠.
+//Required the user input the card must include a suit. extract the final character from the input.
 
 export function getCardValue(card) {
-  // TODO: Implement this function
+  const rank = card.slice(0, -1);
+  const suit = card.slice(-1);
+  const validRank = [
+    "A",
+    "2",
+    "3",
+    "4",
+    "5",
+    "6",
+    "7",
+    "8",
+    "9",
+    "10",
+    "J",
+    "Q",
+    "K",
+  ].includes(rank);
+  const validSuit = ["♠", "♥", "♦", "♣"].includes(suit);
+
+  if (!validRank || !validSuit) {
+    throw new Error (`Expected a number followed by a suit, but got "${card}"`);
+  }
+
+  if (rank === "A") {
+    return 11;
+  } else if (["J", "Q", "K"].includes(rank)) {
+    return 10;
+  } else {
+    return Number(rank);
+  }
 }