02. Shopping List

function shoppingList(array) {
  let list = array.shift().split("!");
  let copyCommand = array.slice();

  for (let i = 0; i < copyCommand.length; i++) {
    if (array[i] === "Go Shopping!") {
      break;
    }

    let current = array[i].split(" ");
    let command = current.shift();

    if (command === "Urgent") {
      let item = current.shift();

      if (!list.includes(item)) {
        list.unshift(item);
      }
    } else if (command === "Unnecessary") {
      let item = current.shift();

      if (list.includes(item)) {
        let index = list.indexOf(item);
        list.splice(index, 1);
      }
    } else if (command === "Correct") {
      let oldItem = current.shift();
      let newItem = current.shift();

      if (list.includes(oldItem)) {
        let index = list.indexOf(oldItem);
        list.splice(index, 1, newItem);
      }
    } else if (command === "Rearrange") {
      let item = current.shift();
      if (list.includes(item)) {
        let index = list.indexOf(item);
        let change = list.splice(index, 1);
        list.push(change);
      }
    }
  }
  console.log(list.join(", "));
}

// shoppingList([
//   "Tomatoes!Potatoes!Bread",
//   "Unnecessary Milk",
//   "Urgent Tomatoes",
//   "Go Shopping!",
// ]);

shoppingList([
  "Milk!Pepper!Salt!Water!Banana",
  "Urgent Salt",
  "Unnecessary Grapes",
  "Correct Pepper Onion",
  "Rearrange Grapes",
  "Correct Tomatoes Potatoes",
  "Go Shopping!",
]);