docbrown/app/assets/javascripts/initializers/initializeArticleReactions.js
2018-02-28 16:11:08 -05:00

97 lines
3.5 KiB
JavaScript

function initializeArticleReactions() {
setTimeout(function(){
if(document.getElementById("article-body")){
var articleId = document.getElementById("article-body").dataset.articleId;
if ( document.getElementById("article-reaction-actions") ) {
var ajaxReq;
var thisButt = this;
if (window.XMLHttpRequest) {
ajaxReq = new XMLHttpRequest();
} else {
ajaxReq = new ActiveXObject("Microsoft.XMLHTTP");
}
ajaxReq.onreadystatechange = function() {
if (ajaxReq.readyState == XMLHttpRequest.DONE ) {
var json = JSON.parse(ajaxReq.response);
json.article_reaction_counts.forEach(function(reaction){
if (reaction.count > 0) {
document.getElementById("reaction-butt-"+reaction.category).classList.add("activated")
document.getElementById("reaction-number-"+reaction.category).innerHTML = reaction.count;
}
})
json.reactions.forEach(function(reaction){
if (document.getElementById("reaction-butt-"+reaction.category)){
document.getElementById("reaction-butt-"+reaction.category).classList.add("user-activated")
}
})
}
}
ajaxReq.open("GET", getReactionsPath()+"?article_id="+articleId, true);
ajaxReq.send();
}
}
var reactionButts = document.getElementsByClassName("article-reaction-butt")
for(var i = 0; i < reactionButts.length; i++) {
reactionButts[i].onclick = function(e) {
reactToArticle(articleId, this.dataset.category)
};
}
},3)
}
function reactToArticle(articleId, reaction) {
var userStatus = document.getElementsByTagName('body')[0].getAttribute('data-user-status');
if (userStatus == "logged-out") {
showModal("react-to-article");
return;
} else {
document.getElementById("reaction-butt-"+reaction).classList.add("user-activated")
}
function createFormdata() {
/*
* What's not shown here is that "authenticity_token" is included in this formData.
* The logic can be seen in sendFetch.js.
*/
var formData = new FormData();
formData.append("reactable_type", "Article");
formData.append("reactable_id", articleId);
formData.append("category", reaction);
return formData;
}
function successCb(response) {
var num = document.getElementById("reaction-number-"+reaction).innerHTML;
if (response.result == "create") {
document.getElementById("reaction-butt-"+reaction).classList.add("user-activated")
if (num == "") {
document.getElementById("reaction-number-"+reaction).innerHTML = "1";
} else{
document.getElementById("reaction-number-"+reaction).innerHTML = parseInt(num) + 1;
}
} else {
document.getElementById("reaction-butt-"+reaction).classList.remove("user-activated")
if (num == 1) {
document.getElementById("reaction-butt-"+reaction).classList.remove("activated")
document.getElementById("reaction-number-"+reaction).innerHTML = "";
} else {
document.getElementById("reaction-number-"+reaction).innerHTML = parseInt(num) - 1;
}
}
}
getCsrfToken()
.then(sendFetch("reaction-creation", createFormdata()))
.then(function (response) {
if (response.status === 200) {
return response.json().then(successCb);
} else {
// there's currently no errorCb.
}
})
.catch(function (error) {
// there's currently no error handling.
})
}