Shows the earliest date and time you can level up if your reviews are correct. Adds an indication if you have items available for lesson/review that are needed to advance your current level.
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// ==UserScript==
// @name Wanikani Level-Up Time Assistant
// @namespace https://greasyfork.org/en/users/11878
// @version 1.2.3
// @description Shows the earliest date and time you can level up if your reviews are correct. Adds an indication if you have items available for lesson/review that are needed to advance your current level.
// @author Inserio
// @match https://www.wanikani.com/dashboard*
// @match https://www.wanikani.com/
// @grant none
// @license MIT
// ==/UserScript==
/* global wkof */
window.lu = {};
(function(lu_obj) {
//========================================================================
// Initialization of the Wanikani Open Framework.
//-------------------------------------------------------------------
const script_name = 'Wanikani Level Up Time';
let wkof_version_needed = '1.0.27';
if (!window.wkof) {
if (confirm(script_name+' requires Wanikani Open Framework.\nDo you want to be forwarded to the installation instructions?'))
window.location.href = 'https://community.wanikani.com/t/instructions-installing-wanikani-open-framework/28549';
return;
}
if (wkof.version.compare_to(wkof_version_needed) === 'older') {
if (confirm(script_name+' requires Wanikani Open Framework version '+wkof_version_needed+'.\nDo you want to be forwarded to the update page?'))
window.location.href = 'https://greasyfork.org/en/scripts/38582-wanikani-open-framework';
return;
}
//========================================================================
// Globals
//-------------------------------------------------------------------
var config = {
log: {
enabled: true,
detailed: true
},
callback: null
};
var items_by_subject_id;
var items_by_type;
//========================================================================
// Startup
//-------------------------------------------------------------------
wkof.include('ItemData');
startup();
wkof.ready('ItemData').then(fetch_items);
function startup() {
lu_obj.items_with_soonest_assignments = [];
lu_obj.items_not_passed_with_assignments_available = [];
install_css();
init_ui();
}
/**
* Install stylesheet.
*/
function install_css() {
const lu_css =
'#lu_container { margin: auto auto 12px auto; color: #555; font-family: "Open Sans", "Helvetica Neue", Helvetica, Arial, sans-serif; font-weight: 300; text-shadow: 0 1px 0 #fff; font-size:13px; }'+
'#lu_container i { padding-left:5px; padding-right:5px; font-size:14px; }';
$('head').append('<style>'+lu_css+'</style>');
}
/**
* Initialize the user interface.
*/
function init_ui() {
const html =
"<div id='lu_container'>"+
"<i id='lu_arrow_up' class='fa-solid fa-circle-arrow-up' title='"+get_text_for_icon_tooltip()+"'></i>"+
"<strong>Earliest Level Up: </strong><span id='lu_level_up_date'></span>"+
"</div>";
$('.progress-and-forecast > .wk-panel--review-forecast > :first-child').before(html);
}
//========================================================================
// Populate level info from API.
//-------------------------------------------------------------------
function fetch_items() {
// Fetch only radicals and kanji for current level.
// Include /subjects and /assignments endpoints
wkof.ItemData.get_items({
wk_items:{
options:{
assignments:true,
review_statistics:true
},
filters:{
level:'+0',
item_type:'rad,kan',
}
}
}).then(prepare_items);
}
function prepare_items(items) {
lu_obj.load_time = new Date();
items_by_type = wkof.ItemData.get_index(items, 'item_type');
items_by_subject_id = wkof.ItemData.get_index(items, 'subject_id');
// Add "earliest_study_date" and "earliest_guru_date" properties to items
// Need to parse radicals first so that locked kanji get the proper dates assigned to them
add_dates_to_items((items_by_type.radical?items_by_type.radical:[]).concat(items_by_type.kanji));
lu_obj.items = items.sort(get_sort_method('+earliest_study_date','+earliest_guru_date','+data.subject_id'));
// Cache these filters for quick lookups
lu_obj.items_not_locked_and_not_passed = get_not_locked_but_not_passed_items(lu_obj.items);
lu_obj.items_not_passed_with_assignments_available = get_not_passed_items_with_available_assignments(lu_obj.items);
lu_obj.items_with_soonest_assignments = get_next_soonest_study_items(lu_obj.items_not_locked_and_not_passed);
// Log the results to the console
log_base_items_stats();
// Prevent non-intentional logging
config.log.enabled = false;
process_items();
setup_next_reviews_callback();
}
function process_items() {
lu_obj.level_up_date = get_level_up_date();
update_ui();
let lu_level_up_date = document.getElementById('lu_level_up_date');
let lu_arrow_up = document.getElementById('lu_arrow_up');
if (lu_arrow_up) {
lu_arrow_up.onmouseover = function(){update_ui('lu_arrow_up');};
}
if (lu_level_up_date) {
lu_level_up_date.onmouseover = function(){update_ui('lu_level_up_date');};
lu_level_up_date.onclick = function(){config.log.enabled = true; fetch_items();};
}
}
function update_date_title() {
let lu_level_up_date = document.getElementById('lu_level_up_date');
if (!lu_level_up_date) return;
let dateOutput = format_date_to_standard_output(lu_obj.level_up_date, false);
let wait_time = format_two_dates_diff_to_minimal_output(lu_obj.level_up_date,lu_obj.load_time, true);
lu_level_up_date.innerHTML = dateOutput;
lu_level_up_date.title = (wait_time==='Now'?'Available now':wait_time)+'\nClick to update data (and repeat logging to console)';
}
function update_arrow_title() {
let lu_arrow_up = document.getElementById('lu_arrow_up');
if (!lu_arrow_up) return;
let title = '';
if (lu_obj.items_with_soonest_assignments.length>0) {
let review_time = format_date_to_standard_output(lu_obj.items_with_soonest_assignments[0].earliest_study_date,true, true);
let next_items = lu_obj.items_with_soonest_assignments;
if (review_time === 'Now') {
title = `${lu_obj.items_with_soonest_assignments.length} item${lu_obj.items_with_soonest_assignments.length===1?' needed to pass this level is':'s needed to pass this level are'} currently available to study\nClick here to proceed to a new session`;
next_items = unique_from(get_next_soonest_study_items(lu_obj.items_not_locked_and_not_passed,lu_obj.items_with_soonest_assignments));
if (next_items.length>0) {
title += '\n\n';
review_time = format_date_to_standard_output(next_items[0].earliest_study_date,true, true);
}
}
if (next_items.length>0) {
title += `The next ${next_items.length} item${next_items.length>1?'s':''} of the ones needed to pass this level will arrive at:\n${(review_time)}`;
}
} else {
title = get_text_for_icon_tooltip();
}
lu_arrow_up.title = title;
if (lu_obj.items_not_passed_with_assignments_available.length>0) {
let destination = lu_obj.items_not_passed_with_assignments_available.find(a=>!a.assignments.available_at) ? 'lesson' : 'review';
lu_arrow_up.onclick = function(){window.location='https://www.wanikani.com/subjects/'+destination;};
lu_arrow_up.style.setProperty('color', '#00ff00');
lu_arrow_up.classList.add("fa-beat");
} else {
lu_arrow_up.onclick = null;
lu_arrow_up.style.removeProperty('color');
lu_arrow_up.classList.remove("fa-beat");
}
}
function update_ui(element_id) {
lu_obj.load_time = new Date();
if (!element_id || element_id === 'lu_level_up_date')
update_date_title();
if (!element_id || element_id === 'lu_arrow_up')
update_arrow_title();
}
function setup_next_reviews_callback() {
if (config.callback) {
clearTimeout(config.callback);
config.callback = null;
}
if (lu_obj.items_with_soonest_assignments.length<=0) return;
let time_diff = lu_obj.items_with_soonest_assignments[0].earliest_study_date.getTime() - (new Date()).getTime();
if (time_diff <= 0) return;
setTimeout(function() {
config.callback = null;
fetch_items();
}, time_diff);
}
function log_base_items_stats() {
if (!config.log.enabled) return;
const max_date_len = 48;
let items_not_passed_by_type = wkof.ItemData.get_index(get_not_passed_items(lu_obj.items), 'item_type');
let items_locked_by_type = wkof.ItemData.get_index(get_locked_items(lu_obj.items), 'item_type');
for (let itype of Object.keys(items_not_passed_by_type).sort((a,b)=>a.localeCompare(b)*-1)) {
let not_passed_items = items_not_passed_by_type[itype];
if (!not_passed_items || not_passed_items.length<=0) continue;
let str = [`${not_passed_items.length} remaining ${itype}${itype==='radical'&¬_passed_items.length>1?'s':''} to guru`+
(items_locked_by_type[itype]&&items_locked_by_type[itype].length>0?' ('+items_locked_by_type[itype].length+' of which are still locked)':'')];
if (config.log.detailed) {
for (let i=0; i<not_passed_items.length; i++) {
let itm = not_passed_items[i];
let next_study_time = format_date_to_standard_output(itm.earliest_study_date,true);
let earliest_guru_time = format_date_to_standard_output(itm.earliest_guru_date,true);
str.push((!itm.assignments||!itm.assignments.unlocked_at?'🔒 ':'')+(itm.data.characters?itm.data.characters:itm.data.slug)+'\t'+
'| Stage: '+(itm.assignments?itm.assignments.srs_stage:0)+'/5\t'+
'| Next Study: '+next_study_time+'\t'.repeat(Math.ceil((max_date_len-next_study_time.length)/8))+
'| Earliest Guru: '+earliest_guru_time+'\t'.repeat(Math.ceil((max_date_len-earliest_guru_time.length)/8))+
'| '+itm.data.document_url);
}
}
console.log(str.join('\n'));
}
}
//========================================================================
// Formatting
//-------------------------------------------------------------------
function get_text_for_icon_tooltip() {
return `${lu_obj.items_not_passed_with_assignments_available.length} item${lu_obj.items_not_passed_with_assignments_available.length===1?'':'s'} needed to level ${(lu_obj.items_not_passed_with_assignments_available.length===1?'is':'are')} currently available to study`;
}
function format_two_dates_diff_to_minimal_output(date, date2, include_seconds) {
let diff = Math.max(0, Math.trunc(date.getTime()/1000)-Math.trunc(date2.getTime()/1000));
let dd = Math.floor(diff / 86400);
diff -= dd*86400;
let hh = Math.floor(diff / 3600);
diff -= hh*3600;
let mm = Math.floor(diff / 60);
diff -= mm*60;
let ss = diff;
if (dd > 0) {
return dd+' day'+(dd===1?'':'s')+', '+hh+' hour'+(hh===1?'':'s')+', '+mm+' min'+(mm===1?'':'s')+(include_seconds?', '+ss+' sec'+(ss===1?'':'s'):'');
} else if (hh > 0) {
return hh+' hour'+(hh===1?'':'s')+', '+mm+' min'+(mm===1?'':'s')+(include_seconds?', '+ss+' sec'+(ss===1?'':'s'):'');
} else if (mm > 0 || ss > 0) {
if (!include_seconds && ss > 30) mm++;
return mm+' min'+(mm===1?'':'s')+(include_seconds?', '+ss+' sec'+(ss===1?'':'s'):'');
} else {
return 'Now';
}
}
function format_date_to_standard_output(date, include_differential, include_seconds) {
if (!(date instanceof Date)) date = new Date(date);
if (date.getTime() <= lu_obj.load_time.getTime()) return "Now";
let str = date.toLocaleString([],{weekday:"short",month:"short",day:"numeric",hour12:false,hour:"numeric",minute:"numeric"});
if (!include_differential) return str;
return str +' ('+format_two_dates_diff_to_minimal_output(date,lu_obj.load_time, include_seconds)+')';
}
//========================================================================
// Transformers and Helpers
//-------------------------------------------------------------------
/**
* Returns a non-destructive Array of elements that are not found in
* any of the parameter arrays.
* Assumes all items have a property named "id"
*
* @param {...Array} var_args Arrays to compare.
*/
function unique_from(arr1, ...args) {
if (!args.length) return [];
let out = [];
let map = new Map();
for (let n=0; n < args.length; n++) {
let a2 = args[n];
if (!(a2 instanceof Array))
throw new TypeError( 'argument ['+n+'] must be an Array' );
// Add existing id from the array to the map
for (let i=0; i<a2.length; i++)
map.set(a2[i].id, true);
}
// Add to the new array all items that aren't included in the map (map lookUp is O(1) complexity)
for(let i=0; i<arr1.length; i++)
if (!map.get(arr1[i].id))
out.push(arr1[i]);
return out;
}
/**
* Get an Array sort function with multiple subarray fields.
* Prefix letter allows specifying whether to sort ascending "+" or descending "-" (default: ascending)
* Splits and recurses properties properly on periods
* e.g.
* let arr = [{obj:{prop1:'1'}, prop2: 3},{obj:{prop1:'3'}, prop2: 4},{obj:{prop1:'3'}, prop2: 2},{obj:{prop1:'4'}, prop2: 2}];
* arr.sort(get_sort_method('+prop2','-obj.prop1'));
* // [{obj:{prop1:'4'}, prop2: 2},{obj:{prop1:'3'}, prop2: 2},{obj:{prop1:'1'}, prop2: 3},{obj:{prop1:'3'}, prop2: 4}]
*/
function get_sort_method(){
let argsArr = Array.prototype.slice.call(arguments);
return function(a, b){
for(let x in argsArr){
let strStart = 1;
let op = argsArr[x].substring(0,1);
if (op !== "-" && op !== "+") {op = "+";strStart = 0;}
let prop = argsArr[x].substring(strStart);
prop = prop.split('.');
let len = prop.length;
let i = 0;
let ax = a;
let bx = b;
let cx;
while(i<len) {ax = ax[prop[i]]; bx = bx[prop[i]]; i++;}
ax = typeof ax == "string" ? ax.toLowerCase() : ax / 1;
bx = typeof bx == "string" ? bx.toLowerCase() : bx / 1;
if(op === "-"){cx = ax; ax = bx; bx = cx;}
if(ax !== bx){return ax < bx ? -1 : 1;}
}
};
}
function add_dates_to_items(items) {
for (let i=0; i<items.length; i++) {
let itm = items[i];
itm.earliest_study_date = itm.assignments && itm.assignments.unlocked_at ? new Date(itm.assignments.started_at ? itm.assignments.available_at : itm.assignments.unlocked_at) : get_earliest_unlock_date(itm);
itm.earliest_guru_date = get_item_guru_date(itm);
}
}
function get_not_passed_items(items) {
let output_items = [];
for (let i=0; i<items.length; i++) {
let itm = items[i];
if (!itm.assignments || !itm.assignments.passed_at)
output_items.push(itm);
}
return output_items;
}
function get_not_locked_but_not_passed_items(items) {
let output_items = [];
for (let i=0; i<items.length; i++) {
let itm = items[i];
if (itm.assignments && itm.assignments.unlocked_at && !itm.assignments.passed_at)
output_items.push(itm);
}
return output_items;
}
function get_not_passed_items_with_available_assignments(items) {
let output_items = [];
for (let i=0; i<items.length; i++) {
let itm = items[i];
if (itm.assignments && !itm.assignments.passed_at && itm.earliest_study_date.getTime()<=lu_obj.load_time.getTime())
output_items.push(itm);
}
return output_items;
}
function get_locked_items(items) {
let output_items = [];
for (let i=0; i<items.length; i++) {
let itm = items[i];
if (!itm.assignments || !itm.assignments.unlocked_at)
output_items.push(itm);
}
return output_items;
}
function get_next_soonest_study_items(items) {
return items.reduce((acc,itm)=>{
let min_date = acc.length>0 ? acc[0].earliest_study_date : itm.earliest_study_date;
if (itm.earliest_study_date.getTime() > lu_obj.load_time.getTime() && itm.earliest_study_date.getTime() < min_date.getTime()) {
min_date = itm.earliest_study_date;
acc.length = 0;
}
if (itm.earliest_study_date.getTime() <= lu_obj.load_time.getTime() || itm.earliest_study_date.getTime() === min_date.getTime())
acc.push(itm);
itm.earliest_guru_date = get_item_guru_date(itm);
return acc;
},[]);
}
/**
* Gets the earliest date that the provided item can be unlocked if all components are gurued as soon as possible
*/
function get_earliest_unlock_date(item) {
let min_date;
for (let rad_idx = 0; rad_idx < item.data.component_subject_ids.length; rad_idx++) {
let rad = items_by_subject_id[item.data.component_subject_ids[rad_idx]];
if (!rad) continue;
if (!min_date || rad.earliest_guru_date.getTime() > min_date.getTime())
min_date = new Date(rad.earliest_guru_date);
}
return min_date;
}
/**
* Calculate item guru date
*/
function get_item_guru_date(item){
let hours_to_guru = 0;
if (!item || !item.earliest_study_date && (!item.assignments || !item.assignments.unlocked_at))
return new Date(0); // This is mostly for debugging. If you see the 12/31/1969 date anywhere, this is where it went wrong.
if (item.assignments && item.assignments.passed_at)
return new Date(item.assignments.passed_at);
switch (item.assignments ? item.assignments.srs_stage : 0) {
case 0: hours_to_guru += 4+8+23+47; break;
case 1: hours_to_guru += 8+23+47; break;
case 2: hours_to_guru += 23+47; break;
case 3: hours_to_guru += 47; break;
}
// Add the hours to the available date, or the unlock date if the item is locked, or current date something went wrong
let earliest_guru_date = item.earliest_study_date ? new Date(item.earliest_study_date) : (item.assignments ? new Date(item.assignments.available_at ? item.assignments.available_at : item.assignments.unlocked_at) : new Date(lu_obj.load_time));
if (earliest_guru_date.getTime() < lu_obj.load_time.getTime())
earliest_guru_date = new Date(lu_obj.load_time);
earliest_guru_date.setHours(earliest_guru_date.getHours() + hours_to_guru);
return earliest_guru_date;
}
/**
* Get earliest possible level up date
* Calculated by sorting the kanji by earliest possible guru date and taking the time from the 90% to last kanji
*/
function get_level_up_date() {
let kanji_items = items_by_type.kanji.sort((a,b)=>a.earliest_guru_date.getTime()-b.earliest_guru_date.getTime());
return new Date(kanji_items[Math.ceil(kanji_items.length * 0.9)-1].earliest_guru_date);
}
})(window.lu);