[Userscript]: Double-Check (Version 2.x)

Here’s the latest code. I’ll publish it after I get a little more testing done later today. For now, I have a plumbing issue to work on :slightly_frowning_face:

code
// ==UserScript==
// @name        Wanikani Double-Check
// @namespace   wkdoublecheck
// @description Allows retyping typo'd answers, or marking wrong when WK's typo tolerance is too lax.
// @include     /^https://(www|preview).wanikani.com/review/session/
// @version     2.2.23
// @author      Robin Findley
// @copyright   2017+, Robin Findley
// @license     MIT; http://opensource.org/licenses/MIT
// @run-at      document-end
// @grant       none
// ==/UserScript==

// CREDITS: This is a replacement for an original script by Wanikani user @Ethan.
// Ethan's script stopped working due to some Wanikani changes.  The code below is
// 100% my own, but it closely replicates the functionality of Ethan's original script.

// HOTKEYS:
//   "+"      - Marks answer as 'correct'.
//   "-"      - Marks answer as 'incorrect'.
//   "Escape" or "Backspace" - Resets question, allowing you to retype.

// SEE SETTINGS BELOW.

window.doublecheck = {};

(function(gobj) {

    /* global $, wkof, additionalContent, lastItems, Srs, wanakana */

    var settings;

    wkof.include('Menu,Settings');
    wkof.ready('document,Menu,Settings').then(setup);

    //------------------------------------------------------------------------
    // setup() - Set up the menu link and default settings.
    //------------------------------------------------------------------------
    function setup() {
        wkof.Menu.insert_script_link({name:'doublecheck',submenu:'Settings',title:'Double-Check',on_click:open_settings});

        var defaults = {
            allow_retyping: true,
            allow_change_correct: false,
            allow_change_incorrect: false,
            typo_action: 'ignore',
            wrong_answer_type_action: 'warn',
            wrong_number_n_action: 'warn',
            small_kana_action: 'warn',
            kanji_reading_for_vocab_action: 'warn',
            kanji_meaning_for_vocab_action: 'warn',
            delay_wrong: true,
            delay_multi_meaning: false,
            delay_slightly_off: false,
            delay_period: 1.5,
            warn_burn: 'never',
            burn_delay_period: 1.5,
            show_lightning_button: true,
            lightning_enabled: false,
            srs_msg_period: 1.2,
            autoinfo_correct: false,
            autoinfo_incorrect: false,
            autoinfo_multi_meaning: false,
            autoinfo_slightly_off: false
        }
        return wkof.Settings.load('doublecheck', defaults)
            .then(init_ui.bind(null, true /* first_time */));
    }

    //------------------------------------------------------------------------
    // open_settings() - Open the Settings dialog.
    //------------------------------------------------------------------------
    function open_settings() {
        var dialog = new wkof.Settings({
            script_id: 'doublecheck',
            title: 'Double-Check Settings',
            on_save: init_ui,
            pre_open: settings_preopen,
            content: {
                tabAnswers: {type:'page',label:'Answers',content:{
                    grpChangeAnswers: {type:'group',label:'Change Answer',content:{
                        allow_retyping: {type:'checkbox',label:'Allow retyping answer',default:true,hover_tip:'When enabled, you can retype your answer by pressing Escape or Backspace.'},
                        allow_change_correct: {type:'checkbox',label:'Allow changing to "correct"',default:true,hover_tip:'When enabled, you can change your answer\nto "correct" by pressing the "+" key.'},
                        allow_change_incorrect: {type:'checkbox',label:'Allow changing to "incorrect"',default:true,hover_tip:'When enabled, you can change your answer\nto "incorrect" by pressing the "-" key.'},
                    }},
                    grpCarelessMistakes: {type:'group',label:'Careless Mistakes',content:{
                        typo_action: {type:'dropdown',label:'Typos in meaning',default:'ignore',content:{ignore:'Ignore',warn:'Warn/shake',wrong:'Mark wrong'},hover_tip:'Choose an action to take when meaning contains typos.'},
                        wrong_answer_type_action: {type:'dropdown',label:'Wrong answer type',default:'warn',content:{warn:'Warn/shake',wrong:'Mark wrong'},hover_tip:'Choose an action to take when reading was entered instead of meaning, or vice versa.'},
                        wrong_number_n_action: {type:'dropdown',label:'Wrong number of n\'s',default:'warn',content:{warn:'Warn/shake',wrong:'Mark wrong'},hover_tip:'Choose an action to take when you type the wrong number of n\'s in certain reading questions.'},
                        small_kana_action: {type:'dropdown',label:'Big kana instead of small',default:'warn',content:{warn:'Warn/shake',wrong:'Mark wrong'},hover_tip:'Choose an action to take when you type a big kana instead of small (e.g. ゆ instead of ゅ).'},
                        kanji_reading_for_vocab_action: {type:'dropdown',label:'Kanji reading instead of vocab',default:'warn',content:{warn:'Warn/shake',wrong:'Mark wrong'},hover_tip:'Choose an action to take when the reading of a kanji is entered for a single character vocab word instead of the correct vocab reading.'},
                        kanji_meaning_for_vocab_action: {type:'dropdown',label:'Kanji meaning instead of vocab',default:'warn',content:{warn:'Warn/shake',wrong:'Mark wrong'},hover_tip:'Choose an action to take when the meaning of a kanji is entered for a single character vocab word instead of the correct vocab meaning.'},
                    }},
                }},
                tabMistakeDelay: {type:'page',label:'Mistake Delay',content:{
                    grpDelay: {type:'group',label:'Delay Next Question',content:{
                        delay_wrong: {type:'checkbox',label:'Delay when wrong',default:true,refresh_on_change:true,hover_tip:'If your answer is wrong, you cannot advance\nto the next question for at least N seconds.'},
                        delay_multi_meaning: {type:'checkbox',label:'Delay when multiple meanings',default:false,hover_tip:'If the item has multiple meanings, you cannot advance\nto the next question for at least N seconds.'},
                        delay_slightly_off: {type:'checkbox',label:'Delay when answer has typos',default:false,hover_tip:'If your answer contains typos, you cannot advance\nto the next question for at least N seconds.'},
                        delay_period: {type:'number',label:'Delay period (in seconds)',default:1.5,hover_tip:'Number of seconds to delay before allowing\nyou to advance to the next question.'},
                    }},
                }},
                tabBurnReviews: {type:'page',label:'Burn Reviews',content:{
                    grpBurnReviews: {type:'group',label:'Burn Reviews',content:{
                        warn_burn: {type:'dropdown',label:'Warn before burning',default:'never',content:{never:'Never',cheated:'If you changed answer',always:'Always'},hover_tip:'Choose when to warn before burning an item.'},
                        burn_delay_period: {type:'number',label:'Delay after warning (in seconds)',default:1.5,hover_tip:'Number of seconds to delay before allowing\nyou to advance to the next question after seeing a burn warning.'},
                    }},
                }},
                tabLightning: {type:'page',label:'Lightning',content:{
                    grpLightning: {type:'group',label:'Lightning Mode',content:{
                        show_lightning_button: {type:'checkbox',label:'Show "Lightning Mode" button',default:true,hover_tip:'Show the "Lightning Mode" toggle\nbutton on the review screen.'},
                        lightning_enabled: {type:'checkbox',label:'Enable "Lightning Mode"',default:true,refresh_on_change:true,hover_tip:'Enable "Lightning Mode", which automatically advances to\nthe next question if you answer correctly.'},
                        srs_msg_period: {type:'number',label:'SRS popup time (in seconds)',default:1.2,min:0,hover_tip:'How long to show SRS up/down popup when in lightning mode.  (0 = don\'t show)'},
                    }},
                }},
                tabAutoInfo: {type:'page',label:'Item Info',content:{
                    grpAutoInfo: {type:'group',label:'Show Item Info',content:{
                        autoinfo_correct: {type:'checkbox',label:'After correct answer',default:false,hover_tip:'Automatically show the Item Info after correct answers.', validate:validate_autoinfo_correct},
                        autoinfo_incorrect: {type:'checkbox',label:'After incorrect answer',default:false,hover_tip:'Automatically show the Item Info after incorrect answers.', validate:validate_autoinfo_incorrect},
                        autoinfo_multi_meaning: {type:'checkbox',label:'When multiple meanings',default:false,hover_tip:'Automatically show the Item Info when an item has multiple meanings.', validate:validate_autoinfo_correct},
                        autoinfo_slightly_off: {type:'checkbox',label:'When answer has typos',default:false,hover_tip:'Automatically show the Item Info when your answer has typos.', validate:validate_autoinfo_correct},
                    }},
                }},
            }
        });
        dialog.open();
    }

    //------------------------------------------------------------------------
    // validate_autoinfo_correct() - Notify user if iteminfo and lightning are both enabled.
    //------------------------------------------------------------------------
    function validate_autoinfo_correct(enabled) {
        if (enabled && settings.lightning_enabled) {
            return 'Disable "Lightning Mode"!';
        }
    }

    //------------------------------------------------------------------------
    // validate_autoinfo_incorrect() - Notify user if iteminfo and lightning are both enabled, and wrong_delay disabled.
    //------------------------------------------------------------------------
    function validate_autoinfo_incorrect(enabled) {
        if (enabled && settings.lightning_enabled && !settings.delay_wrong) {
            return 'Disable "Lightning Mode", or<br>enable "Delay when wrong"!';
        }
    }

    //------------------------------------------------------------------------
    // settings_preopen() - Notify user if iteminfo and lightning are both enabled.
    //------------------------------------------------------------------------
    function settings_preopen(dialog) {
        dialog.dialog({width:525});
    }

    //------------------------------------------------------------------------
    // init_ui() - Initialize the user interface.
    //------------------------------------------------------------------------
    var first_time = true;
    function init_ui() {
        settings = wkof.settings.doublecheck;

        if (first_time) {
            first_time = false;
            startup();
        }

        // Migrate 'lightning' setting from localStorage.
        var lightning = localStorage.getItem('lightning');
        if (lightning === 'false' || lightning === 'true') {
            localStorage.removeItem('lightning');
            settings.lightning_enabled = lightning;
            wkof.Settings.save('doublecheck');
        }

        // Initialize the Lightning Mode button.
        if (settings.lightning_enabled) {
            $('#lightning-mode').addClass('active');
        } else {
            $('#lightning-mode').removeClass('active');
        }
        $('#lightning-mode').prop('hidden', !settings.show_lightning_button);

        setClass('#option-double-check', 'hidden', !(settings.allow_change_correct || settings.allow_change_incorrect));
        setClass('#option-retype', 'hidden', !settings.allow_retyping);
        resize_buttons();

        if (state === 'second_submit') {
            setClass('#option-double-check', 'disabled', !(
                (new_answer.passed && (settings.allow_change_incorrect || !first_answer.passed)) ||
                (!new_answer.passed && (settings.allow_change_correct || first_answer.passed))
            ));
            setClass('#option-retype', 'disabled', !settings.allow_retyping);
        } else {
            setClass('#option-double-check', 'disabled', true);
        }
    }

    var old_submit_handler, old_answer_checker, ignore_submit = false, state = 'first_submit', show_srs, srs_load, delay_timer;
    var item, itype, item_id, item_status, qtype, valid_answers, wrong_cnt, question_cnt, completed_cnt, answer, new_answer;
    var last_item_id, last_qtype, first_answer;

    //------------------------------------------------------------------------
    // lightning_clicked() - Lightning button handler.
    //------------------------------------------------------------------------
    function lightning_clicked() {
        settings.lightning_enabled = !settings.lightning_enabled;
        wkof.Settings.save('doublecheck');
        $('#lightning-mode').toggleClass('active', settings.lightning_enabled);
        return false;
    }

    //------------------------------------------------------------------------
    // toggle_result() - Toggle an answer from right->wrong or wrong->right.
    //------------------------------------------------------------------------
    function toggle_result(new_state) {
        if (new_state === 'toggle') new_state = (new_answer.passed ? 'incorrect' : 'correct');
        if (state !== 'second_submit') return false;

        clear_delay();
        switch (new_state) {
            case 'correct':
                if (!(!new_answer.passed && (settings.allow_change_correct || first_answer.passed))) return false;
                new_answer = {passed:true, accurate:true, multipleAnswers:false, exception:false};
                set_answer_state(new_answer, false /* show_msgs */);
                break;
            case 'incorrect':
                if (!(new_answer.passed && (settings.allow_change_incorrect || !first_answer.passed))) return false;
                new_answer = {passed:false, accurate:false, multipleAnswers:false, exception:false};
                set_answer_state(new_answer, false /* show_msgs */);
                break;
            case 'retype':
                if (!settings.allow_retyping) return false;
                set_answer_state({reset:true, due_to_retype:true});
                break;
        }
    }

    //------------------------------------------------------------------------
    // do_delay() - Disable the submit button briefly to prevent clicking past wrong answers.
    //------------------------------------------------------------------------
    function do_delay(period) {
        if (period === undefined) period = settings.delay_period;
        ignore_submit = true;
        delay_timer = setTimeout(function() {
            delay_timer = -1;
            ignore_submit = false;
        }, period*1000);
    }

    //------------------------------------------------------------------------
    // clear_delay() - Clear the delay timer.
    //------------------------------------------------------------------------
    function clear_delay() {
        if (delay_timer) {
            ignore_submit = false;
            clearTimeout(delay_timer);
            delay_timer = undefined;
        }
    }

    //------------------------------------------------------------------------
    // return_new_answer() - Alternate answer checker that overrides our results.
    //------------------------------------------------------------------------
    function return_new_answer() {
        return new_answer;
    }

    //------------------------------------------------------------------------
    // set_answer_state() - Update the screen to show results of answer-check.
    //------------------------------------------------------------------------
    function set_answer_state(answer, show_msgs, stats_only) {
        // If user requested to retype answer, reset the question.
        if (answer.reset) {
            clear_delay();
            if (state === 'second_submit') {
                $.jStorage.set('wrongCount', wrong_cnt);
                $.jStorage.set('questionCount', question_cnt);
                $.jStorage.set('completedCount', completed_cnt);
            }
            // If we are resetting due to the user clicking 'retype', then we need to trigger
            // a refresh the input field and stats by updating 'currentItem' in jStorage.
            if (answer.due_to_retype) {
                $.jStorage.set('currentItem', $.jStorage.get('currentItem'));
            }

            $("#answer-exception").remove();
            $('#option-double-check').addClass('disabled').find('span').attr('title','Mark Right').find('i').attr('class','icon-thumbs-up');
            $('#option-retype').addClass('disabled');
            Srs.remove();
            state = 'first_submit';
            return;
        }

        // If answer is invalid for some reason, do the shake thing.
        var dblchk = $('#option-double-check');
        if (answer.exception) {
            $("#answer-exception").remove();
            if (answer.confirming_burn) {
                // NOTE: We can only reach this branch if the current answer is correct, otherwise we wouldn't be burning it.
                dblchk.find('span').attr('title','Mark Wrong').find('i').attr('class','icon-thumbs-down');
                setClass(dblchk, 'disabled', !(settings.allow_change_incorrect || !first_answer.passed));
                $("#answer-form fieldset").removeClass('incorrect').removeClass('correct').addClass('confburn');
                $("#additional-content").append($('<div id="answer-exception"><span>'+answer.exception+'</span></div>').addClass("animated fadeInUp"));
                return;
            }
            if (!$("#answer-form form").is(":animated")) {
                $("#reviews").css("overflow-x", "hidden");
                $("#answer-form form").effect("shake", {}, 300, function() {
                    $("#reviews").css("overflow-x", "visible");
                    if (!answer.accurate && $('#user-response').val() !== '') {
                        if (typeof answer.exception === "string") {
                            $("#answer-form form").append($('<div id="answer-exception" class="answer-exception-form"><span>' + answer.exception + '</span></div>').addClass("animated fadeInUp"));
                        }
                    }
                }).find("input").focus();
            }
            return;
        }

        // Draw 'correct' or 'incorrect' results, enable Double-Check button, and calculate updated statistics.
        var new_wrong_cnt = wrong_cnt, new_completed_cnt = completed_cnt;
        $("#user-response").blur();
        var new_status = Object.assign({},item_status);
        var retype = $('#option-retype');
        setClass(retype, 'disabled', !settings.allow_retyping);
        if (answer.passed) {
            if (stats_only !== true) {
                $("#answer-form fieldset").removeClass('incorrect').removeClass('confburn').addClass('correct');
                dblchk.find('span').attr('title','Mark Wrong').find('i').attr('class','icon-thumbs-down');
                setClass(dblchk, 'disabled', !(settings.allow_change_incorrect || !first_answer.passed));
            }
            if (qtype === 'meaning') {
                new_status.mc = (new_status.mc || 0) + 1;
            } else {
                new_status.rc = (new_status.rc || 0) + 1;
            }
        } else {
            $("#answer-form fieldset").removeClass('correct').removeClass('confburn').addClass('incorrect');
            dblchk.find('span').attr('title','Mark Right').find('i').attr('class','icon-thumbs-up');
            setClass(dblchk, 'disabled', !(settings.allow_change_correct || first_answer.passed));
            new_wrong_cnt++;
        }
        if ((itype === 'r' || ((new_status.rc || 0) >= 1)) && ((new_status.mc || 0) >= 1)) {
            new_completed_cnt++;
            if (show_srs) {
                if (settings.lightning_enabled) {
                    if (settings.srs_msg_period > 0) {
                        var status = Object.assign({},new_status);
                        var srs = item.srs;
                        setTimeout(Srs.load.bind(Srs, status, srs), 100);
                        setTimeout(Srs.remove, settings.srs_msg_period * 1000);
                    }
                } else {
                    Srs.load(new_status,item.srs);
                }
            }
        }
        $.jStorage.set('wrongCount', new_wrong_cnt);
        $.jStorage.set('questionCount', question_cnt + 1);
        $.jStorage.set('completedCount', new_completed_cnt);
        if (stats_only !== true) {
            $("#user-response").prop("disabled", true);
        }

        // We remove the audio play from enableButtons() so we can control playback.
        // Here, we are installing the audio, but telling it not to play yet.
        $('audio').remove(); // Thanks to Sinyaven for the hotfix!!
        $('#option-audio').off('click');
        let oldAutoplay = window.audioAutoplay;
        window.audioAutoplay = false;
        additionalContent.enableButtons();
        window.audioAutoplay = oldAutoplay;

        var prependedAudio = $('audio');
        if (prependedAudio.length > 0) {
            $('#option-audio').off('click');
            $('#option-audio').on('click', function() {
                if ($('#user-response').is(':disabled')) {
                    prependedAudio.trigger('play');
                    return false;
                }
            });

            // Now that the audio is installed, move it so WK doesn't delete it upon submitting an answer.
            $('body').prepend(prependedAudio);
        }

        // And finally, play the audio (if autoplay is enabled).
        if (prependedAudio.length > 0 && window.audioAutoplay && answer.passed) {
            prependedAudio.trigger('play');
        } else if (window.wkEnableAudio) {
            window.wkEnableAudio(window.audioAutoplay);
        }

        lastItems.disableSessionStats();
        $("#answer-exception").remove();

        // Open item info, depending on settings.
        var showing_info = false;
        if (answer.passed && !settings.lightning_enabled &&
            (settings.autoinfo_correct ||
             (settings.autoinfo_slightly_off && !answer.accurate) ||
             (settings.autoinfo_multi_meaning && answer.multipleAnswers)
            )) {
            showing_info = true;
            $('#option-item-info').click();
        } else if (!answer.passed && !(settings.lightning_enabled && !settings.delay_wrong) && settings.autoinfo_incorrect) {
            showing_info = true;
            $('#option-item-info').click();
        }

        // When user is submitting an answer, display the on-screen message that Wanikani normally shows.
        if (show_msgs) {
            var msg;
            if (answer.passed) {
                if (!answer.accurate) {
                    msg = 'Your answer was a bit off. Check the '+qtype+' to make sure you are correct';
                } else if (answer.multipleAnswers) {
                    msg = 'Did you know this item has multiple possible '+qtype+'s?';
                }
            } else if (answer.custom_msg) {
                msg = answer.custom_msg;
            } else {
                msg = 'Need help? View the correct '+qtype+' and mnemonic';
            }
            if (msg) {
                if (showing_info) {
                    $("#information").prepend($('<div id="answer-exception" style="top:0;"><span>'+msg+'</span></div>').addClass("animated fadeInUp"));
                } else {
                    $("#additional-content").append($('<div id="answer-exception"><span>'+msg+'</span></div>').addClass("animated fadeInUp"));
                }
            }
        }
    }

    //------------------------------------------------------------------------
    // setClass() - Add or remove a class based on the 'enabled' state.
    //------------------------------------------------------------------------
    function setClass(elem, classname, enabled) {
        if (typeof elem === 'string') elem = $(elem);
        if (enabled) {
            elem.addClass(classname)
        } else {
            elem.removeClass(classname);
        }
    }

    //------------------------------------------------------------------------
    // new_submit_handler() - Intercept handler for 'submit' button.  Overrides default behavior as needed.
    //------------------------------------------------------------------------
    function new_submit_handler(e) {
        // Don't process 'submit' if we are ignoring temporarily (to prevent double-tapping past important info)
        if (ignore_submit) {
            // If the user presses <enter> during delay period,
            // WK enables the user input field, which makes Item Info not work.
            // Let's make sure the input field is disabled.
            setTimeout(function(){
                $("#user-response").prop('disabled',true);
            },1);
            return false;
        }

        var submitted_immediately = false;
        switch(state) {
            case 'first_submit':
                // We intercept the first 'submit' click, and simulate normal Wanikani screen behavior.
                state = 'second_submit';

                // Capture the state of the system before submitting the answer.
                item = $.jStorage.get('currentItem');
                itype = (item.rad ? 'r' : (item.kan ? 'k' : 'v'));
                item_id = itype + item.id;
                item_status = $.jStorage.get(item_id) || {};
                qtype = $.jStorage.get('questionType');
                wrong_cnt = $.jStorage.get('wrongCount') || 0;
                question_cnt = $.jStorage.get('questionCount') || 0;
                completed_cnt = $.jStorage.get('completedCount') || 0;
                show_srs = $.jStorage.get('r/srsIndicator');

                // Ask Wanikani if the answer is right (but we don't actually submit the answer).
                answer = old_answer_checker(qtype, $("#user-response").val());

                // Update the screen to reflect the results of our checked answer.
                $("html, body").animate({scrollTop: 0}, 200);

                // Check if [meaning has kana] or [reading has latin]
                var text = $('#user-response').val();
                if ((qtype === 'reading' && window.answerChecker.isNonKanaPresent(text)) ||
                    (qtype === 'meaning' && window.answerChecker.isKanaPresent(text)) ||
                    (text === '')) {
                    answer.exception = answer.exception || true;
                }

                // Non-exact answer (i.e. "Close but no cigar" script)
                if (answer.passed && !answer.accurate) {
                    switch (settings.typo_action) {
                        case 'warn': answer.exception = 'Your answer was close, but not exact'; break;
                        case 'wrong': answer.passed = false; answer.custom_msg = 'Your answer was not exact, as required by your settings.'; break;
                    }
                }

                // Check for reading/meaning mixups
                if (!answer.passed) {
                    if (qtype === 'meaning') {
                        var accepted_readings = [].concat(item.kana, item.on, item.kun, item.nanori);
                        var answer_as_kana = to_kana($('#user-response').val());
                        if (accepted_readings.indexOf(answer_as_kana) >= 0) {
                            if (settings.wrong_answer_type_action === 'warn') {
                                answer.exception = 'Oops, we want the meaning, not the reading.';
                            } else {
                                answer.exception = false;
                            }
                        }
                    } else {
                        // Although Wanikani now checks for readings entered as meanings, it only
                        // checks the 'preferred' reading.  Here, we check all readings.
                        var accepted_meanings = item.en.concat(item.syn, window.answerChecker.filterAuxiliaryMeanings(item.auxiliary_meanings, 'whitelist'));
                        var meanings_as_hiragana = accepted_meanings.map(m => to_kana(m.toLowerCase()).replace(/\s/g,''));
                        var answer_as_hiragana = Array.from($('#user-response').val().toLowerCase()).map(c => wanakana.toHiragana(c)).join('');
                        if (meanings_as_hiragana.indexOf(answer_as_hiragana) >= 0) {
                            if (settings.wrong_answer_type_action === 'warn') {
                                answer.exception = 'Oops, we want the reading, not the meaning.';
                            } else {
                                answer.exception = false;
                            }
                        }
                    }
                }

                // Check for Wanikani warnings that should be changed to 'wrong', based on settings.
                if (typeof answer.exception === 'string') {
                    if (((settings.kanji_meaning_for_vocab_action === 'wrong') && answer.exception.toLowerCase().includes('want the vocabulary meaning, not the kanji meaning')) ||
                        ((settings.kanji_reading_for_vocab_action === 'wrong') && answer.exception.toLowerCase().includes('want the vocabulary reading, not the kanji reading')) ||
                        ((settings.wrong_number_n_action === 'wrong') && answer.exception.toLowerCase().includes('forget that ん')) ||
                        ((settings.small_kana_action === 'wrong') && answer.exception.toLowerCase().includes('watch out for the small')))
                    {
                        answer.exception = false;
                        answer.passed = false;
                    }
                }

                // Copy the modified answer to new_answer, which is what will be submitted to Wanikani.
                new_answer = Object.assign({}, answer);

                // Check for exceptions that are preventing the answer from being submitted.
                if (answer.exception) {
                    set_answer_state(answer, true /* show_msgs */);
                    state = 'first_submit';
                    return false;
                }

                // At this point, the answer is ready for submission (i.e. no exceptions).
                // If this is the user's first attempt at this question, remember the result so
                // we can determine whether they altered their answer later.
                if (!((item_id === last_item_id) && (qtype === last_qtype))) first_answer = Object.assign({}, answer);
                last_item_id = item_id;
                last_qtype = qtype;

                // Optionally (according to settings), temporarily ignore any additional clicks on the
                // 'submit' button to prevent the user from clicking past important info about the answer.
                if ((!answer.passed && settings.delay_wrong) ||
                    (answer.passed &&
                     ((!answer.accurate && settings.delay_slightly_off) ||
                      (answer.multipleAnswers && settings.delay_multi_meaning))
                    )
                   )
                {
                    set_answer_state(answer, true /* show_msgs */);
                    do_delay();
                    return false;
                }

                if (settings.lightning_enabled) {
                    submitted_immediately = true;
                } else {
                    set_answer_state(answer, true /* show_msgs */);
                    return false;
                }

                /* no break */
                // eslint-disable-line no-fallthrough

            case 'second_submit':

                // If the user changed their answer to 'correct', mark the item
                // in storage, so we can warn the user if it comes up for burn.
                // The mark is kept for 10 days in case the user doesn't complete
                // the item (reading and meaning) within one session.
                if (!first_answer.passed && new_answer.passed) {
                    $.jStorage.set('confburn/' + item.id, true, {TTL:1000*3600*24*10});
                }

                // Before accepting a final submit, notify the user if item will burn (depending on settings).
                new_answer.exception = false;
                if (!new_answer.confirming_burn) {
                    // Check if we need to warn the user that this is a 'burn' review.
                    // NOTE: "item_status.ni" seems to be used by other scripts.
                    var will_burn = (item.srs === 8) && new_answer.passed &&
                        !(item_status.mi || item_status.ri || item_status.ni) &&
                        ((itype === 'r') ||
                         (((item_status.rc || 0) + (qtype === 'reading' ? 1 : 0) > 0) &&
                          ((item_status.mc || 0) + (qtype === 'meaning' ? 1 : 0) > 0)));
                    var cheated = $.jStorage.get('confburn/' + item.id) ? true : false;
                    if (will_burn && (settings.warn_burn !== 'never')) {
                        // Prompt before burning, and suppress proceeding for a moment.
                        if (cheated) {
                            new_answer.exception = 'You modified an answer on this item. It will be burned if you continue.';
                        } else if (settings.warn_burn === 'always') {
                            new_answer.exception = 'This item will be burned if you continue.'
                        }
                        if (new_answer.exception) {
                            new_answer.confirming_burn = true;
                            set_answer_state(new_answer, true /* show_msgs */);
                            // Not sure what's causing the input field to be re-enabled, but we have to disable it:
                            setTimeout(function () {
                                $("#user-response").prop('disabled',true);
                            }, 1);
                            if (settings.burn_delay_period > 0) {
                                do_delay(settings.burn_delay_period);
                            }
                            return false;
                        }
                    }
                } else {
                    // We are burning the item now, so we can remove the marker.
                    $.jStorage.deleteKey('confburn/' + item.id);
                    delete new_answer.confirming_burn;
                }

                if (submitted_immediately) {
                    // When lightning mode is enabled, we delay redrawing the screen until after we
                    // know whether a burn notice should be displayed.  At this point, we haven't
                    // updated the screen yet, so we must do it now.  Only the session statistics
                    // need to be updated, so we set 'stats_only' to 'true'.
                    set_answer_state(answer, true /* show_msgs */, true /* stats_only */);
                }

                // We intercepted the first submit, allowing the user to optionally modify their answer.
                // Now, either the user has clicked submit again, or lightning is enabled and we are automatically clicking submit again.
                // Since Wanikani didn't see the first submit (because we intercepted it), now we need to simulate two submits for Wanikani:
                //   1. One for Wanikani to check the (possibly corrected) result, and
                //   2. One for Wanikani to move on to the next question.

                // Reset the screen to pre-submitted state, so Wanikani won't get confused when it tries to process the answer.
                // Wanikani code will then update the screen according to our forced answer-check result.
                $('#option-double-check').addClass('disabled').find('span').attr('title','Double-Check').find('i').attr('class','icon-thumbs-up');
                $('#option-retype').addClass('disabled');
                $('#user-response').prop('disabled', false);
                $('#option-audio audio').remove();
                $.jStorage.set('wrongCount', wrong_cnt);
                $.jStorage.set('questionCount', question_cnt);
                $.jStorage.set('completedCount', completed_cnt);

                // Prevent WK from posting a second SRS notice.
                srs_load = Srs.load;
                Srs.load = function(){};

                // Disable starting audio playback, since we already started playing audio (if necessary)
                var old_additionalContent_audio = window.additionalContent.audio;
                window.additionalContent.audio = function() {};
                var old_wkEnableAudio = window.wkEnableAudio;
                window.wkEnableAudio = function() {};

                // This is the first submit actually forwarded to Wanikani.
                // It will check our (possibly corrected) answer.
                var result = old_submit_handler.apply(this, arguments);

                // This is hidden third click from above, which Wanikani thinks is the second click.
                // Wanikani will move to the next question.
                state = 'first_submit';

                // We need to disable the input field, so Wanikani will see this as the second click.
                $('#user-response').prop('disabled', true);

                // Restore the SRS message function, which we disabled in second_submit above.
                Srs.load = srs_load;

                // Re-enable starting audio playback
                window.wkEnableAudio = old_wkEnableAudio;
                window.additionalContent.audio = old_additionalContent_audio;

                // This is the second submit actually forwarded to Wanikani.
                // It will move on to the next question.
                return old_submit_handler.apply(this, arguments);

            default:
                return false;
        }

        return false;
    }

    //------------------------------------------------------------------------
    // Simulate input character by character and convert with WanaKana to kana
    //  -- Contributed by user @Sinyaven
    //------------------------------------------------------------------------
    function to_kana(text) {
        return Array.from(text).reduce((total, c) => wanakana.toKana(total + c, {IMEMode: true}), "").replace(/n$/, String.fromCharCode(12435));
    }

    //------------------------------------------------------------------------
    // Resize the buttons according to how many are visible.
    //------------------------------------------------------------------------
    function resize_buttons() {
        var buttons = $('#additional-content ul>li');
        var btn_count = buttons.length - buttons.filter('.hidden,[hidden]').length;
        $('#additional-content ul > li').css('width',Math.floor(9900/btn_count)/100 + '%');
    }

    //------------------------------------------------------------------------
    // External hook for @polv's script, "WaniKani Disable Default Answers"
    //------------------------------------------------------------------------
    gobj.set_state = function(_state) {
        state = _state;
    };

    //------------------------------------------------------------------------
    // startup() - Install our intercept handlers, and add our Double-Check button and hotkey
    //------------------------------------------------------------------------
    function startup() {
        // Check if we can intercept the submit button handler.
        try {
            old_submit_handler = $._data( $('#answer-form button')[0], 'events').click[0].handler;
            old_answer_checker = window.enhanceAnswerChecker({evaluate:window.answerChecker.evaluate}).evaluate;
        } catch(err) {}
        if (typeof old_submit_handler !== 'function' || typeof old_answer_checker !== 'function') {
            alert('Wanikani Double-Check script is not working.');
            return;
        }

        // Replace the handler.
        $._data( $('#answer-form button')[0], 'events').click[0].handler = new_submit_handler;

        // Clear warning popups if question changes due to reasons outside of this script
        $.jStorage.listenKeyChange("currentItem", function(key, action){
            set_answer_state({reset:true});
        });

        // Install the Lightning Mode button.
        $('head').append('<style>#lightning-mode.active {color:#ff0; opacity:1.0;}</style>');
        $('#summary-button').append('<a id="lightning-mode" href="#" hidden ><i class="icon-bolt" title="Lightning Mode - When enabled, auto-\nadvance after answering correctly."></i></a>');
        $('#lightning-mode').on('click', lightning_clicked);

        // Install the Double-Check features.
        $('#additional-content ul').css('text-align','center').append(
            '<li id="option-double-check" class="disabled"><span title="Double Check"><i class="icon-thumbs-up"></i></span></li>'+
            '<li id="option-retype" class="disabled"><span title="Retype"><i class="icon-undo"></i></span></li></ul>'
        );
        $('#option-double-check').on('click', toggle_result.bind(null,'toggle'));
        $('#option-retype').on('click', toggle_result.bind(null,'retype'));
        $('body').on('keypress', function(event){
            if (event.which === 43) toggle_result('correct');
            if (event.which === 45) toggle_result('incorrect');
            return true;
        });
        $('body').on('keydown', function(event){
            if ((event.which === 27 || event.which === 8) &&
                (state !== 'first_submit') &&
                (event.target.nodeName === 'BODY') &&
                (!document.querySelector('#wkofs_doublecheck')))
            {
                toggle_result('retype');
                return false;
            } else if (event.ctrlKey && event.key === 'l') {
                lightning_clicked();
                return false;
            }
            return true;
        });
        $('head').append(
            '<style>'+
            '#additional-content>ul>li.hidden {display:none;}'+
            '#answer-form fieldset.confburn button, #answer-form fieldset.confburn input[type=text], #answer-form fieldset.confburn input[type=text]:disabled {'+
            '  background-color: #000 !important;'+
            '  color: #fff;'+
            '  text-shadow: 2px 2px 0 rgba(0,0,0,0.2);'+
            '  transition: background-color 0.1s ease-in;'+
            '  opacity: 1 !important;'+
            '}'+
            '</style>');

        // Override the answer checker.
        window.answerChecker.evaluate = return_new_answer;
        window.enhanceAnswerChecker = function(answerChecker) {return answerChecker;};
    }

})(window.doublecheck);

I fixed the “Mark correct / Mark incorrect” button during burn confirmation.

Also, among other things, I fixed an issue where you could accidentally change an answer (such as accidentally hitting ‘+’ instead of ‘enter’ on the numeric keypad), but couldn’t change it back without modifying settings. Now, you can always change an answer back to what it originally was (passed or failed), regardless of settings.

2 Likes