//Example: node <script.js> "<school>" <username> <password>

const { default: magister, getSchools } = require('magister2.js');
const chalk = require('chalk');

process.stdout.write('\033c');

let school = process.argv[2];
let username = process.argv[3];
let password = process.argv[4];

getSchools(school)
	.then((schools) => schools[0])
    .then(school => magister({school,username,password}))
	.then(async m => {
        console.log(m.profileInfo.firstName + " " + m.profileInfo.lastName + ":")
        let courses = await m.courses();
        let course = courses[courses.length-1];
        let grades = await course.grades();

        let classes = {};

        grades.forEach(grade => {

            //Remove workattitude grades and averages
             if (
                grade.type.header === "PR" ||
                grade.type.header.startsWith("Eind") ||
                isNaN(parseInt(grade.grade))
            ) return;


            let className = grade.class.abbreviation;
            if (!classes[className])
                classes[className] = [];

            let {grade: value, weight} = grade;

            classes[className].push({
                value: value.replace(',','.'),
                weight: weight
            });

        });

        for (let nameOfClass in classes) {
            let grades = classes[nameOfClass];
            let total_points = 0;
            let count = 0;

            for (let i=0;i<grades.length;i++){
                total_points += grades[i].value * grades[i].weight;
                count += grades[i].weight;
            }

            let requiredGrade = [
                Math.round(((5.5 * (count + 1) - total_points) / 1) *100)/100,
                Math.round(((5.5 * (count + 2) - total_points) / 2) *100)/100,
                Math.round(((5.5 * (count + 3) - total_points) / 3) *100)/100
            ]

            for (let i=0;i<requiredGrade.length;i++) {
                if (requiredGrade[i] < 1)
                    requiredGrade[i] = chalk.greenBright(1);

                if (requiredGrade[i] < 3.5 && !isNaN(requiredGrade[i]))
                    requiredGrade[i] = chalk.green(requiredGrade[i]);

                if (requiredGrade[i] < 4.5 && !isNaN(requiredGrade[i]))
                    requiredGrade[i] = chalk.yellowBright(requiredGrade[i]);

                if (!isNaN(requiredGrade[i]))
                    requiredGrade[i] = chalk.red(requiredGrade[i]);
            }

            console.log(`${nameOfClass} 1: ${requiredGrade[0]}, 2: ${requiredGrade[1]}, 3: ${requiredGrade[2]}`);
        }

    })