bk-timetable-widget.js

/* --------------------------------------------------------------
Script: bk-timetable-widget
Author: DatDaDev
Version: 0.0.6
Description:
- Displays the today's and tomorrow's timetable of subjects for students studying at Ho Chi Minh University of Techology (HCMUT).
- Better works with medium-sized or larger size iOS widget for the better view.
Usage: Visit https://github.com/datdadev/Scriptable-BK-Widget
-------------------------------------------------------------- */

const widget = new ListWidget();

const currentDate = new Date();
// The widget will be refreshed every 1 hour.
widget.refreshAfterDate = new Date(currentDate.now + (3600 * 1000));

// Get weekNumber of current week
let startDate = new Date(currentDate.getFullYear(), 0, 1);
let days = Math.floor((currentDate - startDate) / (24 * 60 * 60 * 1000));
let weekNumber = Math.ceil((days + startDate.getDay() + 1) / 7);

// Adjust for cases where the week starts from the previous year
if (startDate.getDay() > 3) {
  weekNumber -= 1;
}

const weekDay = ["Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"];
let currentDay = currentDate.getDay() + 1;

// Adjust currentDay to make Monday = 1 and Sunday = 7
currentDay = currentDay === 0 ? 7 : currentDay;

let gradient = new LinearGradient();
const colorA = Color.dynamic(Color.white(), Color.black());
const colorB = Color.dynamic(Color.white(), Color.black());
gradient.colors = [colorA, colorB];
gradient.locations = [-2.5, 2.5];

widget.backgroundGradient = gradient;

Script.setWidget(widget);
Script.complete();

let errorText = "Please input your timetable correctly in the widget's parameter!";

function Error() {
  let gradient = new LinearGradient();
  gradient.colors = [Color.black(), Color.black()];
  widget.backgroundGradient = gradient;

  const stack = widget.addStack();
  stack.addSpacer();
  const alert = stack.addText(errorText);
  alert.centerAlignText();
  alert.font = Font.boldSystemFont(20);
  alert.textColor = Color.red();
  stack.addSpacer();
  widget.presentMedium();
  return;
}

let timetable = String(args.widgetParameter);
if (timetable != "") {
  // Analyze the information
  let subjectsDetail = [];
  subjects = timetable.split(/(?=\d{5}\s+[A-Z]{2}\d{4}\s+)/);
  for (let i = 0; i < subjects.length; i++) {
    subjectsDetail.push(subjects[i].trim().split(/\s{2,}|\t+/)); // Split by multiple spaces or tabs
  }

  let stack = widget.addStack();
  let hStack1 = widget.addStack();
  hStack1.layoutHorizontally();

  let hStack2 = widget.addStack();
  hStack2.layoutHorizontally();
  let vStack1 = hStack2.addStack();
  hStack2.addSpacer();
  hStack2.addSpacer(1);
  hStack2.addSpacer();
  let vStack2 = hStack2.addStack();
  vStack1.layoutVertically();
  vStack2.layoutVertically();

  function Calculation(week, day, i, j, vStack) {
    if (week == subjectsDetail[i][11][j]) {
      if (parseInt(subjectsDetail[i][6]) == day) {
        vStack.addSpacer(7.5);
        subject = vStack.addText(subjectsDetail[i][2]);
        subject.font = Font.boldSystemFont(14);
        detail = vStack.addText(subjectsDetail[i][8] + ` [${subjectsDetail[i][9]}]`);
        detail.font = Font.systemFont(10);
        return 1;
      }
    }
    return 0;
  }

  // Throw error if something went wrong
  try {
    let noClassCheck = [0, 0];
    // Checking date & time then output
    for (let i = 0; i < subjectsDetail.length; i++) {
      if (subjectsDetail[i][11].match(/\w+\|/gm) != null) {
        let arr = subjectsDetail[i][11].match(/\w+\|/gm).map(
          function(n) {
            return parseInt(n.replace(/\|/g, ''));
          }
        );
        // Replace the parsed studyWeek into its former index
        subjectsDetail[i].splice(11, 1, Array.from(arr));
      }

      for (let j = 0; j < subjectsDetail[i][11].length; j++) {
        noClassCheck[0] = (noClassCheck[0] | Calculation(weekNumber, currentDay, i, j, vStack1));

        let nextWeekNumber = weekNumber;
        let nextDay = currentDay + 1;
        if (currentDay == 7) {
          nextWeekNumber++;
          nextDay = 1;
        }
        noClassCheck[1] = (noClassCheck[1] | Calculation(nextWeekNumber, nextDay, i, j, vStack2));
      }
    }

    // Checking if class is available or not then output it
    for (let i = 0; i < 2; i++) {
      if (noClassCheck[i] == 0) {
        let stack = i == 0 ? vStack1 : vStack2;
        stack.addSpacer(7.5);
        const text = stack.addText("No Class");
        text.font = Font.italicSystemFont(14);
      }
    }
  } catch (e) {
    Error();
    return;
  }

  // Title showing weekNumber and currentDay
  const todayText = hStack1.addText(String(currentDate.getDate()));
  todayText.textOpacity = 0.35;
  hStack1.addSpacer();
  const weekText = hStack1.addText("Week " + String(weekNumber) + " - " + weekDay[currentDay - 1]);
  weekText.centerAlignText();
  weekText.font = Font.blackSystemFont(18);
  hStack1.addSpacer();
  const nextDay = new Date(currentDate);
  nextDay.setDate(currentDate.getDate() + 1);
  const tomorrowText = hStack1.addText(String(nextDay.getDate()));
  tomorrowText.textOpacity = 0.35;

  widget.addSpacer();
  widget.presentMedium();
} else {
  return Error();
}