// ==UserScript==
// @name         3CX TAPI
// @author       Daniel Triendl
// @namespace    http://cp-solutions.at
// @copyright    Copyright 2020 CP Solutions GmbH
// @version      2
// @grant        GM.xmlHttpRequest
// @include      https://192.168.0.154:5001/webclient*
// @include      https://cpsolution.my3cx.at:5001/webclient*
// @downloadURL  http://scootaloo.cp-austria.at/gitlist/3cx_tapi.git/raw/master/3CX_TAPI.user.js
// @require      https://cdn.jsdelivr.net/gh/CoeJoder/waitForKeyElements.js@v1.2/waitForKeyElements.js
// ==/UserScript==

console.log('TAPI init');

const debounce = (func, wait) => {
  let timeout;

  return function executedFunction(...args) {
    const later = () => {
      clearTimeout(timeout);
      func(...args);
    };

    clearTimeout(timeout);
    timeout = setTimeout(later, wait);
  };
};

const tapi = {
  fireChangeEvents: (element) => {
    var changeEvent = null;
    changeEvent = document.createEvent("HTMLEvents");
    changeEvent.initEvent("input", true, true);
    element.dispatchEvent(changeEvent);
    console.debug('input event dispatched for element: ' + element.id);
    changeEvent = document.createEvent("HTMLEvents");
    changeEvent.initEvent("keyup", true, true);
    element.dispatchEvent(changeEvent);
    console.debug('keyup event dispatched for element: ' + element.id);
    changeEvent = document.createEvent("HTMLEvents");
    changeEvent.initEvent("change", true, true);
    element.dispatchEvent(changeEvent);
    console.debug('change event dispatched for element: ' + element.id);
  },

  removeSearchResults: () => {
    var resultList = document.getElementById('tapiResults');
    if (resultList) {
      resultList.parentNode.removeChild(resultList);
    }
    tapi.currentSearchText = '';
  },

  dial: (item) => {
    console.log(item);
    var contact = item.contact;
    var searchInput = document.getElementsByName('searchByNumberInput');
    if (searchInput.length > 0) {
      searchInput[0].value = contact.tD_NUMBER_TAPI;
      searchInput[0].focus();

      tapi.fireChangeEvents(searchInput[0]);
    }
  },

  selectResult: (resultLi) => {
    var items = document.getElementsByClassName('tapi-search-result');
    for (var item of items) {
      item.classList.remove('bg-light');
      item.classList.remove('tapi-search-result-selected');
    }

    resultLi.classList.add('bg-light');
    resultLi.classList.add('tapi-search-result-selected');
  },

  currentSearchText: '',

  doSearch: debounce(() => {
    var search = document.getElementById('tapiSearchInput');
    var searchText = search.value.trim();
    if (searchText == '') {
      tapi.removeSearchResults();
      return;
    } else if (searchText == tapi.currentSearchText) {
      return;
    }
    console.log('Searching TAPI');
    GM.xmlHttpRequest({
      method: 'GET',
      url: 'http://cpatapi.cpsrvweb2016.cp-austria.at/search?query=' + encodeURIComponent(searchText),
      onload: function (response) {
        console.log('TAPI Search response', response);
        var contacts = JSON.parse(response.responseText);
        console.log('TAPI Contacts', contacts);
        tapi.removeSearchResults();
        tapi.currentSearchText = searchText;

        var resultList = document.createElement('ul');
        resultList.id = 'tapiResults';
        resultList.classList.add('search-nav-absolute');
        resultList.classList.add('search-nav-ul');
        document.getElementById('tapiSearchBox').appendChild(resultList);

        resultList.innerHTML = '';
        for (var i = 0; i < contacts.length; i++) {
          var li = document.createElement('li');
          li.classList.add('tapi-search-result');
          li.classList.add('search-result');
          li.classList.add('pointer');
          li.onmouseover = function () {
            tapi.selectResult(this);
          };
          li.contact = contacts[i];
          li.onclick = function () {
            tapi.dial(this);
          }
          li.style.listStyle = 'outside none none'; // display: flex; align-items: center;

          var resultText = document.createElement('div');
          resultText.classList.add('search-result-txt');
          li.appendChild(resultText);

          var line1 = document.createElement('div')
          line1.appendChild(document.createTextNode(contacts[i].tD_NAME));
          resultText.appendChild(line1);

          var line2 = document.createElement('div')
          line2.appendChild(document.createTextNode(contacts[i].tD_NUMBER_TAPI));
          resultText.appendChild(line2);

          resultList.appendChild(li);
        }
      }
    });
  }, 200),

  doSearchKeyDown: (ev) => {
    var items;
    if (ev.key == 'ArrowUp') {
      items = document.getElementsByClassName('tapi-search-result-selected');
      if (items.length > 0) {
        var prev = items[0].previousSibling;
      }
      if (!prev) {
        items = document.getElementsByClassName('tapi-search-result');
        if (items.length > 0) {
          prev = items[items.length - 1];
        }
      }
      if (prev) {
        tapi.selectResult(prev);
        prev.scrollIntoView(true);
      }
    } else if (ev.key == 'ArrowDown') {
      items = document.getElementsByClassName('tapi-search-result-selected');
      if (items.length > 0) {
        var next = items[0].nextSibling;
      }
      if (!next) {
        items = document.getElementsByClassName('tapi-search-result');
        if (items.length > 0) {
          next = items[0];
        }
      }
      if (next) {
        tapi.selectResult(next);
        next.scrollIntoView(false);
      }
    } else {
      tapi.doSearch();
    }
  },

  createSearchBox: (element) => {
    console.log('Create TAPI Search');

    var form = document.createElement('form');
    form.style.width = '200px';
    form.style.float = 'right';
    form.style.marginRight = '20px';
    form.onsubmit = function () {
      var items = document.getElementsByClassName('tapi-search-result-selected');
      if (items.length > 0) {
        tapi.dial(items[0]);
      }

      return false;
    };

    var searchBox = document.createElement('div');
    searchBox.classList.add('contact-search-box');
    searchBox.id = 'tapiSearchBox';
    form.appendChild(searchBox);

    var searchWrapper = document.createElement('div');
    searchWrapper.classList.add('search-input-wrapper');
    searchWrapper.style.position = 'relative';
    searchBox.appendChild(searchWrapper);

    var search = document.createElement('input');
    search.id = 'tapiSearchInput';
    search.autocomplete = 'off';
    search.classList.add('padder');
    search.classList.add('rounded');
    search.classList.add('bg-light');
    search.classList.add('no-border');
    search.classList.add('contact-search-box');
    search.placeholder = 'TAPI Suche';
    search.onfocus = tapi.doSearch;
    search.onkeydown = tapi.doSearchKeyDown;
    search.onblur = function () {
      console.log('TAPI Search exit');
      setTimeout(function () {
        console.log('TAPI clear search results');
        tapi.removeSearchResults();
      }, 500);
    };
    searchWrapper.appendChild(search);

    var icon = document.createElement('span');
    icon.classList.add('fa');
    icon.classList.add('fa-search');
    icon.classList.add('form-control-feedback');
    icon.style.color = 'grey';
    searchWrapper.appendChild(icon);

    element.appendChild(form);
  }
};

waitForKeyElements('div.nav-search', tapi.createSearchBox, false);