Manages a cache of all the user's reviews
当前为
此脚本不应直接安装。它是供其他脚本使用的外部库，要使用该库请加入元指令 // @require https://update.cn-greasyfork.org/scripts/410909/1048101/Wanikani%3A%20Review%20Cache.js
// ==UserScript==
// @name Wanikani: Review Cache
// @version 1.1.1
// @description Manages a cache of all the user's reviews
// @author Kumirei
// @include *wanikani.com*
// ==/UserScript==
; (function (wkof) {
// Manually increment to initiate reload for all users
const cache_version = 1
// Script version. Starts with q to make it larger than numerical versions
const version = 'q1.1.0'
// Reveal functions to window
if (!window.review_cache || !window.review_cache.version || window.review_cache.version < version) {
window.review_cache = { get_reviews, reload, version: version }
}
// Fetch reviews from storage
function get_reviews() {
wkof.include('Apiv2')
return wkof.ready('Apiv2').then(load_data).then(update_data_after_session)
}
// Deletes cache and refetches reviews
function reload() {
return wkof.file_cache.delete('review_cache').then(get_reviews)
}
// Loads data from cache
function load_data() {
return wkof.file_cache.load('review_cache').then(decompress, (_) => {
return { cache_version, date: '1970-01-01T00:00:00.000Z', reviews: [] }
})
}
// Save cache
function save(data) {
return wkof.file_cache.save('review_cache', compress(data)).then((_) => data)
}
// Compress and decompress the dates for better use of storage space.
// Dates are stored as time elapesed between items, but are returned as absolute dates
function compress(data) {
return press(true, data)
}
function decompress(data) {
return press(false, data)
}
function press(com, data) {
let last = 0
let pressed = data.reviews.map((item) => {
let map = [com ? item[0] - last : last + item[0], ...item.slice(1)]
last = com ? item[0] : last + item[0]
return map
})
return { cache_version: data.cache_version, date: data.date, reviews: pressed }
}
// Modified to only check for new reviews if a review session occurred in the mean time
async function update_data_after_session(data) {
if (!data.cache_version || data.cache_version < cache_version)
data = { cache_version, date: '1970-01-01T00:00:00.000Z', reviews: [] }
// insert extra check
var lastReviewSessionDate = wkof.load_file('/review').then(parse_last_review_session, fail_last_review_session)
if (lastReviewSessionDate) {
if (new Date(lastReviewSessionDate).getTime() < new Date(data.date).getTime()) {
// no new review sessions since last fetch, simply returned cached data
return data.reviews
}
}
// else fetch new
// end insert extra check
let [date, new_reviews] = await fetch_new_reviews(data.date)
if (new_reviews.length) {
for (let new_review of new_reviews) data.reviews.push(new_review)
data.reviews.sort((a, b) => (a[0] < b[0] ? -1 : 1))
data.date = date
save(data)
}
return data.reviews
//====================
function parse_last_review_session(html) {
return $(html).find('#last-session-date time')[0].getAttribute('datetime')
}
function fail_last_review_session(reason) {
console.log('failed to check last review session date: ' + reason)
return null
}
}
// Fetches any new reviews from the API
async function fetch_new_reviews(last_fetch) {
let updated_reviews = await wkof.Apiv2.fetch_endpoint('reviews', { filters: { updated_after: last_fetch } })
let new_reviews = updated_reviews.data.filter((item) => last_fetch < item.data.created_at)
new_reviews = new_reviews.map((item) => [
Date.parse(item.data.created_at),
item.data.subject_id,
item.data.starting_srs_stage,
item.data.incorrect_meaning_answers,
item.data.incorrect_reading_answers,
])
return [updated_reviews.data_updated_at, new_reviews]
}
})(window.wkof);