02. Treasure Hunt

function treasureHunt(array) {
  let chest = array.shift().split("|");
  let commands = array.slice();
  let stolen = [];

  for (let i = 0; i < array.length; i++) {
    let current = commands.shift();

    if (current === "Yohoho!") {
      break;
    }

    let curr = current.split(" ");
    let comm = curr.shift();

    if (comm === "Loot") {
      for (let i = 0; i < curr.length; i++) {
        let item = curr[i];
        if (!chest.includes(item)) {
          chest.unshift(item);
        }
      }
    } else if (comm === "Drop") {
      let index = curr.shift();
      let item = chest.splice(+index, 1);
      chest.push(item);
    } else if (comm === "Steal") {
      let count = Number(curr.shift());
      stolen = chest.slice(-count);
    }
  }

  console.log(stolen.join(", "));

  if (chest.length != stolen.length) {
    let sum = 0;
    let counter = 0;
    for (let i = 0; i < chest.length - stolen.length; i++) {
      sum += chest[i].length;
      counter++;
    }
    let averageGain = sum / counter;

    console.log(
      `Average treasure gain: ${averageGain.toFixed(2)} pirate credits.`
    );
  } else {
    console.log("Failed treasure hunt.");
  }
}
treasureHunt([
  "Gold|Silver|Bronze|Medallion|Cup",
  "Loot Wood Gold Coins",
  "Loot Silver Pistol",
  "Drop 3",
  "Steal 3",
  "Yohoho!",
]);

treasureHunt([
  "Diamonds|Silver|Shotgun|Gold",
  "Loot Silver Medals Coal",
  "Drop -1",
  "Drop 1",
  "Steal 6",
  "Yohoho!",
]);