Shows status of your Wanikani lessons/reviews while in the forums.
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// ==UserScript==
// @name Wanikani Forums Lesson/Review Status
// @namespace rfindley
// @description Shows status of your Wanikani lessons/reviews while in the forums.
// @version 1.0.14
// @include https://community.wanikani.com/*
// @copyright 2018+, Robin Findley
// @license MIT; http://opensource.org/licenses/MIT
// @run-at document-end
// @grant none
// ==/UserScript==
window.lrstatus = {};
(function(gobj) {
/* global $, wkof */
var settings = {
show_next_review: true,
highlight_labels: false
};
var randomize_query = 300; // Randomize API query times over a 300 sec period to spread server load.
var next_review = -1;
function promise(){var a,b,c=new Promise(function(d,e){a=d;b=e;});c.resolve=a;c.reject=b;return c;}
//-------------------------------------------------------------------
// Styling info for this script.
//-------------------------------------------------------------------
var css =
'.float_wkappnav .d-header {height:inherit;}'+
'.float_wkappnav .wanikani-app-nav-container {border-top:1px solid #ccc; line-height:2em;}'+
'.float_wkappnav .wanikani-app-nav ul {padding-bottom:0; margin-bottom:0; border-bottom:inherit;}'+
'.timeline-container:not(.timeline-docked) {margin-top:25px;}'+
'.dashboard_bubble {color:#fff; background-color:#bdbdbd; font-size:0.8em; border-radius:0.5em; padding:0 6px; margin:0 0 0 4px; font-weight:bold;}'+
'li[data-highlight="true"] .dashboard_bubble {background-color:#6cf;}'+
'body[theme="dark"] .dashboard_bubble {color:#ddd; background-color:#646464;}'+
'body[theme="dark"] li[data-highlight="true"] .dashboard_bubble {color:#000; background-color:#6cf;}'+
'body[theme="dark"] .wanikani-app-nav[data-highlight-labels="true"] li[data-highlight="true"] a {color:#6cf;}'+
'body[theme="dark"] .wanikani-app-nav ul li a {color:#999;}'+
'.wanikani-app-nav.prompt_apikey li:not(.apikey_form):not(:first-child) {display:none;}'+
'.wanikani-app-nav:not(.prompt_apikey) .apikey_form {display:none;}'+
'.apikey_form input {margin:0; box-sizing:border-box; border:1px solid #ccc; height:1.6em; width:auto;}'+
'.apikey_form input {margin:0; box-sizing:border-box; border:1px solid #ccc; height:1.6em; width:auto;}'+
'.apikey_form input::placeholder {color:#ccc;}'+
'.apikey_form button {height:1.6em;}'+
'';
//-------------------------------------------------------------------
// Display a friendly relative time for the next review.
//-------------------------------------------------------------------
function update_time() {
var timestamp = next_review;
var nr = $('#next_review');
if (timestamp === null) {
nr.text('none').closest('li').attr('data-highlight','false');
return;
}
var now = Math.trunc(new Date().getTime()/1000);
var diff = Math.max(0, timestamp-now);
var dd = Math.floor(diff / 86400);
diff -= dd*86400;
var hh = Math.floor(diff / 3600);
diff -= hh*3600;
var mm = Math.floor(diff / 60);
diff -= mm*60;
var ss = diff;
var text, next_update;
var is_now = false;
if (dd > 0) {
text = dd+' day'+(dd===1?'':'s')+', '+hh+' hour'+(hh===1?'':'s');
next_update = mm*60+ss+1;
} else if (hh > 0) {
text = hh+' hour'+(hh===1?'':'s')+', '+mm+' min'+(mm===1?'':'s');
next_update = ss;
} else if (mm > 0 || ss > 15) {
if (ss > 0) mm++;
text = mm+' min'+(mm===1?'':'s');
next_update = ss;
} else {
text = 'Now';
next_update = -1;
is_now = true;
}
nr.text(text);
$('[data-name="next_review"]').attr('data-highlight',(is_now ? 'true' : 'false'));
if (next_update >= 0) setTimeout(update_time, (next_update+1)*1000);
}
//-------------------------------------------------------------------
// Update the lesson/review count info on the screen.
//-------------------------------------------------------------------
function update_counts(lessons, reviews) {
var lc = $('#lesson_count');
var rc = $('#review_count');
lc.text(lessons);
rc.text(reviews);
$('[data-name="lesson_count"]').attr('data-highlight',(lessons > 0 ? 'true' : 'false'));
$('[data-name="review_count"]').attr('data-highlight',(reviews > 0 ? 'true' : 'false'));
if (settings.show_next_review === true) {
update_time();
}
}
//-------------------------------------------------------------------
// Fetch lesson/review count info from the server.
//-------------------------------------------------------------------
function fetch_data() {
var now = Math.round(new Date().getTime()/1000);
query_api('summary')
.then(function(json){
var lessons = json.data.lessons[0].subject_ids.length;
var reviews = json.data.reviews[0].subject_ids.length;
next_review = (json.data.next_reviews_at ? Math.floor(new Date(json.data.next_reviews_at).getTime()/1000) : null);
update_counts(lessons, reviews);
})
.catch(function() {
return;
});
var next_query = (new Date().setMinutes(60,1,0) - Date.now())/1000 + Math.round(Math.random()*randomize_query) + 10;
setTimeout(fetch_data, next_query*1000);
}
//------------------------------
// Check if a string is a valid apikey format.
//------------------------------
function is_valid_apikey_format(str) {
return ((typeof str === 'string') &&
(str.match(/^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$/) !== null));
}
//------------------------------
// Fetch the specified endpoint from the WK API.
//------------------------------
function query_api(endpoint) {
var fetch_promise = promise();
var retry_cnt = 0;
var apikey = localStorage.getItem('apiv2_key');
if (!is_valid_apikey_format(apikey)) {
bad_apikey();
} else {
fetch();
}
return fetch_promise;
function fetch() {
retry_cnt++;
var request = new XMLHttpRequest();
request.onreadystatechange = received;
request.open('GET', "https://api.wanikani.com/v2/" + endpoint, true);
request.setRequestHeader('Authorization', 'Bearer '+apikey);
request.send();
}
function received(event) {
// ReadyState of 4 means transaction is complete.
if (this.readyState !== 4) return;
// Check for rate-limit error. Delay and retry if necessary.
if (this.status === 429 && retry_cnt < 40) {
var delay = Math.min((retry_cnt * 250), 2000);
setTimeout(fetch, delay);
return;
}
// Check for bad API key.
if (this.status === 401) return bad_apikey();
// Process the response data.
var json = JSON.parse(event.target.response);
fetch_promise.resolve(json);
}
function bad_apikey() {
$('.wanikani-app-nav').addClass('prompt_apikey');
fetch_promise.reject();
}
}
//-------------------------------------------------------------------
// Determine whether the user is using a dark theme.
//-------------------------------------------------------------------
function is_dark_theme() {
// Grab the <html> background color, average the RGB. If less than 50% bright, it's dark theme.
return $('html').css('background-color').match(/\((.*)\)/)[1].split(',').slice(0,3).map(str => Number(str)).reduce((a, i) => a+i)/(255*3) < 0.5;
}
//-------------------------------------------------------------------
// Handler for apikey input change.
//-------------------------------------------------------------------
function apikey_changed() {
var val = $('.apikey_form input').val();
var button = $('.apikey_form button');
if (is_valid_apikey_format(val)) {
button.text('Save');
} else {
button.text('Find it');
}
}
//-------------------------------------------------------------------
// Handler for apikey form button.
//-------------------------------------------------------------------
function apikey_btn_clicked() {
var button = $('.apikey_form button');
if (button.text() === 'Save') {
var apikey = $('.apikey_form input').val();
localStorage.setItem('apiv2_key', apikey);
$('.wanikani-app-nav').removeClass('prompt_apikey');
fetch_data();
} else {
window.open('https://www.wanikani.com/settings/account#public-api-key','_blank');
}
}
//-------------------------------------------------------------------
// Startup. Runs at document 'load' event.
//-------------------------------------------------------------------
var retry = 25;
function startup() {
var wk_app_nav = $('.wanikani-app-nav').closest('.container');
if (wk_app_nav.length === 0) {
if (retry-- > 0) setTimeout(startup, 200);
return;
}
if (is_dark_theme()) {
$('body').attr('theme','dark');
} else {
$('body').attr('theme','light');
}
// Attach the Dashboard menu to the stay-on-top menu.
var top_menu = $('.d-header');
var main_content = $('#main-outlet');
$('body').addClass('float_wkappnav');
wk_app_nav.addClass('wanikani-app-nav-container');
top_menu.find('>.wrap > .contents:eq(0)').after(wk_app_nav);
// Adjust the main content's top padding, so it won't be hidden under the new taller top menu.
var main_content_toppad = Number(main_content.css('padding-top').match(/[0-9]*/)[0]);
main_content.css('padding-top', (main_content_toppad + 25) + 'px');
// Insert CSS.
$('head').append('<style type="text/css">'+css+'</style>');
// Add our content to the WK App Nav bar.
$('.wanikani-app-nav > ul > li:contains("Lessons")').attr('data-name', 'lesson_count').attr('data-highlight','false').append('<span id="lesson_count" class="dashboard_bubble">?</span>');
$('.wanikani-app-nav > ul > li:contains("Reviews")').attr('data-name', 'review_count').attr('data-highlight','false').append('<span id="review_count" class="dashboard_bubble">?</span>');
if (settings.show_next_review === true) {
$('.wanikani-app-nav > ul').append('<li data-name="next_review" data-highlight="false"><a href="https://www.wanikani.com/review" title="Go to reviews">Next Review<span id="next_review" class="dashboard_bubble">Loading...</span></a></li>');
}
$('.wanikani-app-nav').attr('data-highlight-labels', (settings.highlight_labels === true ? 'true' : 'false'));
$('.wanikani-app-nav > ul').append('<li class="apikey_form"><input type="text" placeholder="Paste your APIv2 key" size="36"></input><button type="submit">Find it</button></li>');
$('.wanikani-app-nav .apikey_form button').on('click', apikey_btn_clicked);
$('.wanikani-app-nav .apikey_form input').on('input', apikey_changed);
var now = Math.trunc(new Date().getTime()/1000);
var last_qtr_hr = Math.trunc(now / 900) * 900;
var last_query = Number(localStorage.getItem('wkf_lrstatus.last_query'));
fetch_data();
}
// Run startup() after window.onload event.
if (document.readyState === 'complete') {
startup();
} else {
window.addEventListener("load", startup, false);
}
})(window.lrstatus);