// ==UserScript==
// @name         stomp
// @namespace    https://git.lorenzzz.dev/lorenzhohermuth/
// @source       https://git.lorenzzz.dev/lorenzhohermuth/stomp
// @version      1.5
// @description  try to take over the world!
// @author       You
// @match        https://services.bsi-software.com/bsicrm/*
// @updateURL    https://git.lorenzzz.dev/lorenzhohermuth/stomp/raw/branch/main/stomp.js
// @downloadURL  https://git.lorenzzz.dev/lorenzhohermuth/stomp/raw/branch/main/stomp.js
// @grant        none
// ==/UserScript==

document.addEventListener('keyup', doc_keyUp, false);

const successColor = "#1c9c31"
const errorColor = "#fa3737"

function doc_keyUp(e) {
  if (e.keyCode == 145) {
    if (!document.querySelector("div.menubar-box.left > div:nth-child(3) > span.content.text").textContent.match("Neue Arbeit")) {
      return;
    }
    var headers = document.getElementsByClassName("table-header-item-text");
    var columnPosBuchungstext;
    var columnPosHours;
    var columnPosActivity;
    const emptyCellClassName = "table-cell white-space-nowrap halign-left table-aggregate-cell empty";
    for (let i = 0; i < headers.length; i++) {
      if (headers[i]) {
        if (headers[i].textContent.match(/Buchungstext/gm)) {
          columnPosBuchungstext = i;
        } else if (headers[i].textContent.match(/Dauer \[h]/gm)) {
          columnPosHours = i;
        } else if (headers[i].textContent.match(/Aktivität/gm)) {
          columnPosActivity = i;
        }
      }
    }


    var startpos;
    var nodes = document.getElementsByClassName("table-row first")[0].parentNode.children;
    for (let i = 0; i < nodes.length; i++) {
      if (nodes[i].className.match(/table-row (?:selected select-single )?first/g)) {
        startpos = i;
        break;
      }
    }

    // 0800-1200/1245-1700[]
    for (let i = startpos; i < nodes.length - 1; i++) {
      let node = nodes[i].childNodes[columnPosBuchungstext];
      let text = node.textContent;
      if (text && text.match(/^[0-9]{4}-[0-9]{4}(?:\/[0-9]{4}-[0-9]{4})?(?:\[[-]?[0-9]{0,2}\])?/gm)) {
        let morning = getMinutes(text.substring(0, 4), text.substring(5, 9));
        let afternoon = getMinutes(text.substring(10, 14), text.substring(15, 19));
        let stampMinutes = morning + afternoon + parseInt(text.match(/\[([-]?[0-9]+)\]/)[1]);
        let n = i;
        while (nodes[n].childNodes[columnPosBuchungstext].className != emptyCellClassName) {
          n--;
        }
        let sumNode = nodes[n].childNodes[columnPosHours];
        let actualNode = nodes[n].childNodes[columnPosBuchungstext];
        let workSum = nodes[n].childNodes[columnPosHours].getElementsByClassName("text")[0].textContent.split(".");
        let actualMinutes = toMinutes(parseInt(workSum[0]), parseInt(workSum[1] / 100 * 60));
        actualMinutes -= getSchoolSum(n);
        if (actualMinutes === stampMinutes) {
          node.style.background = successColor;
          sumNode.style.background = successColor;
        } else {
          node.style.background = errorColor;
          sumNode.style.background = errorColor;
          actualNode.textContent = "stomp: " + toHoursAndMinutes(stampMinutes);
          actualNode.style.background = errorColor;
        }
      }
    }

    function getSchoolSum(startpos) {
      for (let i = startpos + 1; (i < nodes.length - 1) && (nodes[i].childNodes[columnPosBuchungstext].className != emptyCellClassName); i++) {
        let activityNode = nodes[i].childNodes[columnPosActivity];
        let activityText = activityNode.textContent;
        if (activityText && activityText.match(/Lernende: Berufsschule/gm)) {
          let schoolSum = nodes[i].childNodes[columnPosHours].getElementsByClassName("text")[0].textContent.split(".");
          return toMinutes(parseInt(schoolSum[0]), parseInt(schoolSum[1] / 100 * 60));
        }
      }
      return 0;
    }

    function getMinutes(first, second) {
      var time_start = new Date();
      var time_end = new Date();
      var value_start = slice(first, 2);
      var value_end = slice(second, 2);

      time_start.setHours(value_start[0], value_start[1], 0, 0);
      time_end.setHours(value_end[0], value_end[1], 0, 0);
      return (time_end - time_start) / 1000 / 60 || 0;
    }

    function slice(str, index) {
      return [str.slice(0, index), str.slice(index)];
    }

    function toHoursAndMinutes(totalMinutes) {
      const hours = Math.floor(totalMinutes / 60);
      const minutes = totalMinutes % 60 / 60 * 100;
      return hours + "." + minutes;
    }

    function toMinutes(hours, minutes) {
      return hours * 60 + minutes;
    }
  }
}