leilukin-site/src/_includes/asummersend/hero.njk

{% extends "global/hero.njk" %}

{% block heroImg %}
    <picture>
        <source srcset="/assets/shrines/asummersend/images/asummersend-header-320.png" media="(orientation: landscape)" />
        <img src="/assets/shrines/asummersend/images/asummersend-header.png" alt="Banner of A Summer's End — Hong Kong 1986 Shrine" />
    </picture>
{% endblock %}

{% block eventScript %}
    const todayEvent = getTodayEvent();

    if (todayEvent) {
        heroTopBarEl.classList.remove('hidden');
        heroTopBarEl.innerHTML = todayEvent;
    }

    function getTodayEvent() {
        const date = new Date();
        const month = date.getMonth() + 1;
        const day = date.getDate();

        const releaseDate = new Date("2020-04-23").getFullYear();
        const currentYear = new Date().getFullYear();
        const anniversary = currentYear - releaseDate;

        if (month == 2 && day == 16)
            return `
                Today is Michelle Cheung's birthday. Happy Birthday Michelle!
            `;
        else if (month == 4 && day == 23)
            return `
                Today is the ${anniversary}-year anniversary of the release of <cite>A Summer’s End — Hong Kong 1986</cite>!
            `;
        else if (month == 8 && day == 9)
            return `
                Today is Cecelia Cortes' birthday. Happy Birthday Cecelia!
            `;
        else if (month == 12 && day == 28)
            return `
                Today is Sam Wong's birthday. Happy Birthday Sam!
            `;
        else
            return null;
    }
{% endblock %}