background.js

const aocBotUrl = 'https://7b79gj2si4.execute-api.eu-central-1.amazonaws.com/Prod';

// With manifest V2 and Firefox, chrome.* APIs don't return promises, but browser.* APIs do.
const browserOrChrome = typeof browser !== "undefined" ? browser : chrome;

browserOrChrome.tabs.onUpdated.addListener(async (tabId, changeInfo, tab) => {
    'use strict';

    if (changeInfo.status == 'complete' && tab.url) {
        const matches = tab.url.match(/\.com\/([0-9]{4})\/day\/([0-9]+)(\/answer)?/);
        //const matches = tab.url.match(/file:\/\/\//) ? [, 2022, 3, '/answer'] : undefined;
        if (matches) {
            const [, year, day, answer] = matches;
            if (!answer) {
                await onProblemUpdated(tab, year, day);
            } else {
                await onAnswerUpdated(tab, year, day);
            }
        }
    }
});

const onProblemUpdated = async (tab, year, day) => {
    'use strict';

    const timestamp = Math.floor(Date.now() / 1000);

    const { userName, part, error } = await browserOrChrome.tabs.sendMessage(tab.id, { text: 'get_start_data' });
    if (error) return;

    let { aoc_times: times } = await browserOrChrome.storage.sync.get(['aoc_times']);

    if (userName && part && times?.[year]?.[day]?.[part] === undefined) {
        const body = {
            version: 1,
            year: Number(year),
            day: Number(day),
            part: Number(part),
            name: userName
        };
        const response = await fetch(`${aocBotUrl}/start`, {
            method: 'post',
            headers: {
                'Content-Type': 'application/json'
            },
            body: JSON.stringify(body)
        });
        console.log(response);

        if (times === undefined) times = {};
        if (times[year] === undefined) times[year] = {};
        if (times[year][day] === undefined) times[year][day] = {};
        times[year][day][part] = timestamp;

        await browserOrChrome.storage.sync.set({ aoc_times: times });
        console.log('User:', userName);
        console.log(times);
    }
};

const onAnswerUpdated = async (tab, year, day) => {
    'use strict';

    const { userName, part, error } = await browserOrChrome.tabs.sendMessage(tab.id, { text: 'get_stop_data' });
    if (error) return;

    if (userName && part) {
        const body = {
            version: 1,
            year: Number(year),
            day: Number(day),
            part: Number(part),
            name: userName
        };
        const response = await fetch(`${aocBotUrl}/stop`, {
            method: 'post',
            headers: {
                'Content-Type': 'application/json'
            },
            body: JSON.stringify(body)
        });
        console.log(response);
    }
};