import {DomOutput} from "./lib/DomIO.js";
import {calculateHomeworkTime} from "./study.js";

const OUTPUT_ELEMENT_ID = "text-output";
let terminal = new DomOutput(OUTPUT_ELEMENT_ID);

document.addEventListener("DOMContentLoaded",() =>{
    document.getElementById("run").addEventListener("click", main);
});

/** JSON-Version */
function main() {
    const inputElementId = "argv";
    let inputContent = document.getElementById(inputElementId).value;
    try {
        let lectures = JSON.parse(inputContent);
        let lecturesInformation = []
        for(let lecture of lectures ) {
            let homework = calculateHomeworkTime(lecture.ects, lecture.sws/2);
            let newLecture = Object.assign({},lecture);
            newLecture.homework = homework;
            lecturesInformation.push(newLecture);
        }
        printLectureInformation(lecturesInformation);
    }catch (e) {
        //Error by parsing user input, => tell user what was wrong.
        terminal.print(e);
    }
}

function printLectureInformation(lecturesInformation) {
    terminal.clear();
    let table = `<table><tr>
    <th class="name">Vorlesung</th><th class="effort">Aufwand pro Woche in Stunden</th>
</tr>\n`;
    for(let l of lecturesInformation) {
        table += `<tr><td class="name">${l.name}</td> <td class="effort">${l.homework}</td></tr>\n`
    }
    table += "</table>";
    terminal.printh(table);
}