class Model {
  constructor() {}

  parseXML(xml) {
    let parser = new DOMParser();
    let xmlDoc = parser.parseFromString(xml, "text/xml");

    this.comments = [];

    let comment = xmlDoc.getElementsByTagName("comment");
    for (let i = 0; i < comment.length; i++) {
      let start = comment[i].getElementsByTagName("start")[0].innerHTML;
      let end = comment[i].getElementsByTagName("end")[0].innerHTML;
      let title = comment[i].getElementsByTagName("title")[0].innerHTML;
      let text = comment[i].getElementsByTagName("text");

      this.comments.push(new Comment(start, end, title, text));
    }

    return this.comments;
  }

  getVideoFileName(xml) {
    let parser = new DOMParser();
    let xmlDoc = parser.parseFromString(xml, "text/xml");
    let videoTag = xmlDoc.firstChild.getAttribute("src");

    return videoTag;
  }

  getCommentsObjects() {}

  async loadXml(v) {
    var Connect = new XMLHttpRequest();
    // Define which file to open and
    // send the request.
    Connect.open("GET", "./videos/" + v + ".xml", false);
    Connect.setRequestHeader("Content-Type", "text/xml");
    Connect.send(null);
    // Place the response in an XML document.
    var TheDocument = Connect.responseText;
    // Place the root node in an element.
    // var Customers = TheDocument.childNodes[0];

    return TheDocument;
  }
}