82 lines
2.3 KiB
JavaScript
82 lines
2.3 KiB
JavaScript
import * as cheerio from "cheerio";
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const titles = [
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"class",
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"date",
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"lesson",
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"teacher",
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"changedTeacher",
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"subject",
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"room",
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"type",
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"notes",
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];
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export function parseSubstitutionPlan(html) {
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const infos = {};
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const $ = cheerio.load(html);
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// Extract the date, weekday and a/b week from the title
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const title = $(".mon_title").text().split(" ");
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const rawDate = title[0];
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const date = rawDate
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.split(".")
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.reverse()
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.map((e) => e.padStart(2, 0))
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.join("-");
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infos.date = new Date(date).setUTCHours(0, 0, 0, 0);
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infos.week = title[3];
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// Get the export timestamp
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const rawTimestamp = $(".mon_head td")
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.text()
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.split("Stand: ")[1]
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.replace(/[\s\n]*$/g, "");
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const exportDate = rawTimestamp.split(" ")[0].split(".").reverse().join("-");
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const timestamp = exportDate + " " + rawTimestamp.split(" ")[1];
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infos.updatedAt = new Date(timestamp).getTime();
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const data = [];
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const subsitutionTable = $("table.mon_list tr.list");
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// Loop through each table row
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subsitutionTable.each((_rowcnt, row) => {
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const rowData = {};
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// Find the columns and ignore empty ones
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const columns = $(row).find("td");
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if (columns.text() == "") return;
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// Ignore columns that include "Keine Vertretungen"
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// to have an empty array if there are no substitutions
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if (columns.text().includes("Keine Vertretungen")) return;
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columns.each((columncnt, column) => {
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const text = $(column).text();
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// Clean the text by removing new lines, tabs, ...
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var cleantext = text.replace(/^\n\s*/g, "").replace(/\s*$/, "");
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if (cleantext == "" || cleantext == "---") cleantext = null;
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const columntitle = titles[columncnt];
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rowData[columntitle] = cleantext;
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});
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// Split change if it spans over multiple lessons
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const rawLesson = rowData.lesson;
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const fromToLessons = rawLesson.match(/\d+/g).map(Number);
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const from = fromToLessons[0];
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const to = fromToLessons[1] || fromToLessons[0];
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// Generate numbers from `from` to `to`
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const lessons = Array(to - from + 1)
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.fill()
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.map((_e, i) => i + from);
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// Create new change for each lesson the change spans over
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for (const lesson of lessons) {
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rowData.lesson = lesson;
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data.push({ ...rowData });
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}
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});
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infos.changes = data;
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return infos;
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}
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