{{!< default}}
{{!-- The tag above means: insert everything in this file
into the {body} of the default.hbs template --}}

<header class="site-home-header">
    <div class="outer site-header-background">
        {{#if @site.cover_image}}
            {{!-- This is a responsive image, it loads different sizes depending on device
            https://medium.freecodecamp.org/a-guide-to-responsive-images-with-ready-to-use-templates-c400bd65c433 --}}
            <img class="site-header-cover"
                srcset="{{img_url @site.cover_image size="s"}} 300w,
                        {{img_url @site.cover_image size="m"}} 600w,
                        {{img_url @site.cover_image size="l"}} 1000w,
                        {{img_url @site.cover_image size="xl"}} 2000w"
                sizes="100vw"
                src="{{img_url @site.cover_image size="xl"}}"
                alt=""
            />
        {{/if}}
        <div class="inner">
            {{> "site-nav"}}
            <div class="site-header-content">
                <h1 class="site-title">
                    {{#if @site.logo}}
                        <img class="site-logo" src="{{img_url @site.logo size="m"}}" alt="{{@site.title}}" />
                    {{else}}
                        {{@site.title}}
                    {{/if}}
                </h1>
                <p>{{@site.description}}</p>
            </div>
        </div>
    </div>
</header>

{{!-- The main content area --}}
<main id="site-main" class="site-main outer">
    <div class="inner posts">

        <div class="post-feed">
            {{#foreach posts}}

                {{!-- The tag below includes the markup for each post - partials/post-card.hbs --}}
                {{> "post-card"}}

            {{/foreach}}
        </div>

    </div>
</main>

<div class="outer site-nav-main">
    <div class="inner">
        {{> "site-nav"}}
    </div>
</div>

{{!-- Scripts - Sticky behaviour for the header/nav when scrolling --}}
<script>
$(document).ready(function () {

    var nav = document.querySelector('.site-nav-main .site-nav');
    var feed = document.querySelector('.post-feed');

    var lastScrollY = window.scrollY;
    var lastWindowHeight = window.innerHeight;
    var lastDocumentHeight = $(document).height();
    var ticking = false;

    function onScroll() {
        lastScrollY = window.scrollY;
        requestTick();
    }

    function onResize() {
        lastWindowHeight = window.innerHeight;
        lastDocumentHeight = $(document).height();
        requestTick();
    }

    function requestTick() {
        if (!ticking) {
            requestAnimationFrame(update);
        }
        ticking = true;
    }

    function update() {
        var trigger = feed.getBoundingClientRect().top + window.scrollY;
        var progressMax = lastDocumentHeight - lastWindowHeight;

        // show/hide nav
        if (lastScrollY >= trigger - 20) {
            nav.classList.add('fixed-nav-active');
        } else {
            nav.classList.remove('fixed-nav-active');
        }

        ticking = false;
    }

    window.addEventListener('scroll', onScroll, { passive: true });
    window.addEventListener('resize', onResize, false);

    update();

});
</script>