function chatLogger(arr) {
  let j = 0;
  let chat = [];
  while (arr[j] !== "end") {
    let element = arr[j].split(" ");
    let command = element[0];
    switch (command) {
      case "Chat":
        chat.push(element[1]);
        break;
      case "Delete":
        if (chat.includes(element[1])) {
          chat.splice(chat.indexOf(element[1]), 1);
        }
        break;
      case "Edit":
        if (chat.includes(element[1])) {
          chat.splice(chat.indexOf(element[1]), 1, element[2]);
        }
        break;
      case "Pin":
        if (chat.includes(element[1])) {
          let pin = chat.splice(chat.indexOf(element[1]), 1);
          chat.push(pin);
        }
        break;
      case "Spam":
        for (let i = 1; i < element.length; i++) {
          let spam = element[i];
          chat.push(spam);
        }
        break;
    }
    j++;
  }
  console.log(chat.join("\n"));
}