validate_timetable.js

// this function will validate the array of timetable and flag out the room and teacher conflicts from that batch of timetables
import fs from 'fs';
const validate_timetable = (timetable) => {
    let day = ["Mon", "Tue", "Wedn", "Thu", "Fri", "Sat", "Sun"];
    let slot = ["08-09", "09-10", "10-11", "11-12", "12-01", "01-02", "02-03", "03-04", "04-05", "05-06"];
    for (let j = 0; j < 7; j++) {                               // monday to sunday
        for (let k = 0; k < 10; k++) {                          // 8am to 6pm
            let temp = {}
            for (let i = 0; i < timetable['data'].length; i++) {        // all timetables
                if (timetable['data'][i]['timetable'][j][k].roomid != "" || timetable['data'][i]['timetable'][j][k].teacherid != "") {
                    continue;
                } else if (timetable['data'][i]['timetable'][j][k].teacherid && timetable['data'][i]['timetable'][j][k].roomid) {
                    // if () {         // if room is empty
                    if (temp[("teacher" + ";" + j + ";" + k + ";" + timetable['data'][i]['timetable'][j][k].teacherid)] || temp[("room" + ";" + j + ";" + k + ";" + timetable['data'][i]['timetable'][j][k].roomid)]) {
                        process.stdout.write(temp[("room" + timetable['data'][i]['timetable'][j][k].roomid)] ? "room conflicts " : "room error safe");
                        process.stdout.write("    --------    ");
                        process.stdout.write(temp[("teacher" + timetable['data'][i]['timetable'][j][k].teacherid)] ? "teacher conflicts " : "teacher error safe");
                        process.stdout.write("    --------    ");
                        process.stdout.write(i + " " + j + " " + k + " conflict at" + " Day : " + day[j] + " Period : " + slot[j] + " room id : " + timetable['data'][i]['timetable'][j][k].roomid + " Teacher id : " + timetable['data'][i]['timetable'][j][k].teacherid);
                        console.log("");
                        return false;
                    } else {
                        temp[("room" + ";" + j + ";" + k + ";" + timetable['data'][i]['timetable'][j][k].roomid)] = true;
                        temp[("teacher" + ";" + j + ";" + k + ";" + timetable['data'][i]['timetable'][j][k].teacherid)] = true;
                    }
                }
            }
        }
    }
    return true;
}

export default validate_timetable;

// example usage:
// let timetable = JSON.parse(fs.readFileSync('data2.json', 'utf8'));
// validate_timetable(timetable);