01. Secret Chat

function solve(input = []) {
  let text = input.shift();
  input.pop();

  for (const currentLine of input) {
    let [command, tokenOne, tokenTwo] = currentLine.split(":|:");

    switch (command) {
      case "InsertSpace":
        tokenOne = Number(tokenOne);
        text = text.split("");
        text.splice(tokenOne, 0, " ");
        text = text.join("");
        console.log(text);
        break;

      case "Reverse":
        if (text.includes(tokenOne)) {
          let startIndex = text.indexOf(tokenOne);
          let part = text.substr(startIndex, tokenOne.length);
          let reversedPart = part.split("").reverse().join("");
          text = text.replace(part, "");
          text += reversedPart;
          console.log(text);
        } else {
          console.log("error");
        }
        break;

      case "ChangeAll":
        while (text.includes(tokenOne)) {
          text = text.replace(tokenOne, tokenTwo);
        }
        console.log(text);
        break;
    }
  }
  console.log(`You have a new text message: ${text}`);
}