scripts.js

var lastPost = "";
var queued = false;
var sorting = decodeURIComponent(window.location.hash.slice(1)).split("?");
var end = false;

var isUriImage = function(uri) { //stolen from https://stackoverflow.com/a/19395606
    //make sure we remove any nasty GET params 
    uri = uri.split('?')[0];
    //moving on, split the uri into parts that had dots before them
    var parts = uri.split('.');
    //get the last part ( should be the extension )
    var extension = parts[parts.length-1];
    //define some image types to test against
    var imageTypes = ['jpg','jpeg','tiff','png','gif','bmp', 'gifv'];
    //check if the extension matches anything in the list.
    if(imageTypes.indexOf(extension) !== -1) {
        return true;   
    }
};

function chooseSort() {
    window.location.hash = document.getElementById("sort").value;
    location.reload();
}

function chooseTime() {
    window.location.hash = document.getElementById("sort").value + "?" + document.getElementById("timeSelect").value;
    location.reload();
}

function evalPost(postData) {
    var link = document.createElement("a");
    link.href = "https://reddit.com" + postData.permalink;
    if(postData.url != "https://i.redd.it/n1oie6joe0vx.jpg") {
        if(postData.url.startsWith("https://v.redd.it/")) {
            var video = document.createElement("video");
            video.autoplay = "true";
            video.muted = "true";
            video.loop = "true";
            video.playsinline = "true";
            video.src = postData.media.reddit_video.fallback_url + 'mp4';
            link.appendChild(video);
        } else {
            if(isUriImage(postData.url) === true) {
                var img = document.createElement("img");
                img.src = postData.url;
                img.alt = postData.title;
                link.appendChild(img);
            } else {
                return;
            }
        }
        lastPost = postData.name;
        document.getElementById("container").appendChild(link);
    }
} 

function createPosts(sort, time) {
    if(end === false) {
        if(time != undefined) {
            reddit[sort]("upvoteexeggutor").t(time).limit(20).after(lastPost).fetch(function (res) { //suprisingly it does not care if you provide an empty string as last post
                for (var i = 0; i < res.data.children.length; i++) {
                    evalPost(res.data.children[i].data);
                }
                if(res.data.children.length < 19) {
                    var img = document.createElement("img");
                    img.src = "https://b.thumbs.redditmedia.com/B0Ekc6wMDxg-GjCcx-lLLKRJ05ujSm1zNN-EFhRJppE.png";
                    img.alt = "Legs";
                    document.getElementById("container").appendChild(img);
                    end = true;
                }
                queued = false;
            });
        } else {
            reddit[sort]("upvoteexeggutor").limit(20).after(lastPost).fetch(function (res) {
                for (var i = 0; i < res.data.children.length; i++) {
                    evalPost(res.data.children[i].data);
                }
                if(res.data.children.length < 19) {
                    var img = document.createElement("img");
                    img.src = "https://b.thumbs.redditmedia.com/B0Ekc6wMDxg-GjCcx-lLLKRJ05ujSm1zNN-EFhRJppE.png";
                    img.alt = "Legs";
                    document.getElementById("container").appendChild(img);
                    end = true;
                }
                queued = false;
            });
        }
    }
}

function morePosts() {
    if(sorting[0] != "") {
        if(sorting[0] === "controversial" || sorting[0] === "top") {
            document.getElementById("time").style.display = "revert";
            if(sorting[1] != undefined) {
                document.getElementById("sort").value = sorting[0];
                document.getElementById("timeSelect").value = sorting[1];
                createPosts(sorting[0], sorting[1]);
            } else {
                document.getElementById("sort").value = sorting[0];
                document.getElementById("timeSelect").value = "all";
                createPosts(sorting[0], document.getElementById("timeSelect").value);
            }
        } else {
            createPosts(sorting[0]);
            document.getElementById("sort").value = sorting[0];
        }
    } else {
        createPosts(document.getElementById("sort").value);
    }
}

(function () {
    if ('scrollRestoration' in history) {
        history.scrollRestoration = 'manual';
    }
    morePosts();
    window.addEventListener("scroll",function(){
        if((Math.max(document.body.offsetHeight - (window.pageYOffset + window.innerHeight), 0) < 5000) && queued === false) {
            morePosts();
            queued = true;
        }
    });
})();