Add movie ratings to IMDB links [adopted]

Adds movie ratings and number of voters to links on IMDB. Modified version of http://userscripts.org/scripts/show/96884

このスクリプトの質問や評価の投稿はこちら通報はこちらへお寄せください。
// ==UserScript==
// @name         Add movie ratings to IMDB links [adopted]
// @description  Adds movie ratings and number of voters to links on IMDB. Modified version of http://userscripts.org/scripts/show/96884
// @author       StackOverflow community (especially Brock Adams)
// @version      2015-11-24-41-joeytwiddle
// @license      MIT
// @match        *://www.imdb.com/*
// @grant        GM_xmlhttpRequest
// @grant        GM_addStyle
// @require      http://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js
// @namespace    https://greasyfork.org/users/8615
// @derived-from https://greasyfork.org/en/scripts/2033-add-imdb-rating-votes-next-to-all-imdb-movie-series-links-improved
// ==/UserScript==
// Special Thanks to Brock Adams for this script: http://stackoverflow.com/questions/23974801/gm-xmlhttprequest-data-is-being-placed-in-the-wrong-places/23992742

var maxLinksAtATime     = 100;   //-- Pages can have 100's of links to fetch. Don't spam server or browser.
var skipEpisodes        = true;  //-- I only want to see ratings for movies or TV shows, not TV episodes.
var showAsStar          = false; //-- Use IMDB star instead of colored div, less info but more consistent with the rest of the site.
var addRatingToTitle    = true;  //-- Adds the rating to the browser's title bar (so rating will appear in browser bookmarks).
var showMetaScore       = true;  //-- When the metascore is available, show it
var useLightBackground  = false; //-- If you prefer the site to have a light grey background
var showGetMoreRatings  = false; //-- Turn this on if the "See more" button stops pulling down ratings

if (useLightBackground) {
    GM_addStyle('.ipc-page-background { background: #e3e2dd !important; color: black !important; }');
    // You could also try #262626 for a dark grey but not black background
}

// Nov 2022 design has `display: flex` to make all/some info flow downwards, which causes our rating to appear below the link, instead of after it
// TODO: A better solution might be to replace the <a> with a <div> containing the <a> and our rating
// TODO: Or we could try putting the rating inside the link
// TODO: Or we could make the rating float after the link, using position: absolute
GM_addStyle(`
    /* For the "Known For" section */
    .ipc-primary-image-list-card__content-top {
        flex-direction: row;
    }

    /* For the "Credits" section */
    .ipc-metadata-list-summary-item__tc {
        display: initial;
    }
`);

// The old iMDB site exposed jQuery, but the new one does not
//var $ = unsafeWindow.$;
// This was exposed by the @require
var $ = jQuery;

var fetchedLinkCnt = 0;

//const ratingSelectorNew = '.ipc-button > div > div > div > div > span:first-child';
//const ratingSelectorNew = '.ipc-button > div > div > div > div > span:first-child';
const ratingSelectorNew = "*[data-testid='hero-rating-bar__aggregate-rating__score'] > span:nth-child(1)";
const voteCountSelectorNew = "*[data-testid='hero-rating-bar__aggregate-rating__score'] + div + div";

function processIMDB_Links () {
    //--- Get only links that could be to IMBD movie/TV pages.
    var linksToIMBD_Shows   = document.querySelectorAll ("a[href*='/title/']");

    var lastLinkProcessed;

    for (var J = 0, L = linksToIMBD_Shows.length;  J < L;  J++) {
        const currentLink = linksToIMBD_Shows[J];

        /*--- Strict tests for the correct IMDB link to keep from spamming the page
            with erroneous results.
        */
        if (    ! /^(?:www\.)?IMDB\.com$/i.test (currentLink.hostname)
            ||  ! /^\/title\/tt\d+\/?$/i.test (currentLink.pathname)
        )
            continue;

        // I am beginning to think a whitelist might be better than this blacklist!

        // Skip if in Bio
        if ($(currentLink).hasClass('ipc-md-link')) {
            continue;
        }

        // Skip thumbnails on the search results page
        if ($(currentLink).closest('.primary_photo').length) {
            continue;
        }

        // Skip thumbnails in the six recommendations area of a title page
        if ($(currentLink).closest('.rec_item, .rec_poster').length) {
            continue;
        }

        // Skip top-rated episodes on the right-hand sidebar of TV series pages; they already display a rating anyway!
        if ($(currentLink).closest('#top-rated-episodes-rhs').length) {
            continue;
        }

        // Skip thumbnail of title at top of Season page
        if ($(currentLink).find(':only-child').prop('tagName') === 'IMG') {
            continue;
        }

        // Skip the thumbnail of each episode on a season page (episode names still processed)
        if ($(currentLink).closest('.image').length) {
            continue;
        }

        // Skip thumbnails in "Known For" section of actor pages
        if ($(currentLink).closest('.known-for, .knownfor-title').length && $(currentLink).find('img').length) {
            continue;
        }

        // Skip links to character pages
        // || currentLink.href.includes('/characters/')
        if ($(currentLink).closest('td.character').length) {
            continue;
        }

        // Skip episodes on actor pages
        if (skipEpisodes && $(currentLink).closest('.filmo-episodes').length) {
            continue;
        }

        // On an episode page, skip the next/previous buttons
        if ($(currentLink).closest('.bp_item').length) {
            continue;
        }

        // New layout 2021

        // The thumbnails on the "More like this" video cards
        if ($(currentLink).closest('.ipc-lockup-overlay').length) {
            continue;
        }

        // Nov 2022: In the list of titles for an actor, there are now two <a>s in each row.
        if (lastLinkProcessed && currentLink.href === lastLinkProcessed.href) {
            continue;
        }

        // Even if we skip this link, we remember it, to prevent duplicate ratings appearing when we "Get more ratings"
        lastLinkProcessed = currentLink;

        if (! currentLink.getAttribute ("data-gm-fetched") ){
            if (fetchedLinkCnt >= maxLinksAtATime){
                //--- Position the "continue" button.
                continueBttn.style.display = 'inline';
                currentLink.parentNode.insertBefore (continueBttn, currentLink);
                break;
            }

            //fetchTargetLink (currentLink); //-- AJAX-in the ratings for a given link.

            // Stagger the fetches, so we don't overwhelm IMDB's servers (or trigger any throttles they might have)
            // Needs currentLink to be a const, or a closure around it
            setTimeout(() => fetchTargetLink(currentLink), 300 * fetchedLinkCnt);

            //---Mark the link with a data attribute, so we know it's been fetched.
            currentLink.setAttribute ("data-gm-fetched", "true");
            fetchedLinkCnt++;
        }
    }
}

function fetchTargetLink (linkNode) {
    //--- This function provides a closure so that the callbacks can work correctly.

    //console.log("Fetching " + linkNode.href + ' for ', linkNode);

    /*--- Must either call AJAX in a closure or pass a context.
        But Tampermonkey does not implement context correctly!
        (Tries to JSON serialize a DOM node.)
    */
    GM_xmlhttpRequest ( {
        method:     'get',
        url:        linkNode.href,
        //context:    linkNode,
        onload:     function (response) {
            prependIMDB_Rating (response, linkNode);
        },
        onload:     function (response) {
            prependIMDB_Rating (response, linkNode);
        },
        onabort:     function (response) {
            prependIMDB_Rating (response, linkNode);
        }
    } );
}

function prependIMDB_Rating (resp, targetLink) {
    var isError     = true;
    var ratingTxt   = "** Unknown Error!";
    var colnumber   = 0;
    var justrate    = 'RATING_NOT_FOUND';

    if (resp.status != 200  &&  resp.status != 304) {
        ratingTxt   = '** ' + resp.status + ' Error!';
    }
    else {
        // Example value: ["Users rated this 8.5/10 (", "8.5/10"]
        //var ratingM = resp.responseText.match (/Users rated this (.*) \(/);
        // Example value: ["(1,914 votes) -", "1,914"]
        //var votesM  = resp.responseText.match (/\((.*) votes\) -/);

        var doc = document.createElement('div');
        doc.innerHTML = resp.responseText;
        var elem = doc.querySelector('.title-overview .vital .ratingValue strong');

        var ratingT, votesT;
        if (elem) {
            // Old site
            var title = elem && elem.title || '';

            ratingT = title.replace(/ based on .*$/, '');
            votesT  = title.replace(/.* based on /, '').replace(/ user ratings/, '');
        } else {
            // New site
            var ratingElem = doc.querySelector(ratingSelectorNew);
            ratingT = ratingElem && ratingElem.textContent || '';

            var votesElem = doc.querySelector(voteCountSelectorNew);
            votesT = votesElem && votesElem.textContent || '';

            //console.log('ratingElem', ratingElem);
            //console.log('votesElem', votesElem);

            if (votesT.slice(-1) == 'K') {
                votesT = String(1000 * votesT.slice(0, -1));
            } else if (votesT.slice(-1) == 'M') {
                votesT = String(1000000 * votesT.slice(0, -1));
            }
            // Add in commas (to match old format)
            votesT = votesT.replace(/(\d)(\d\d\d)(\d\d\d)$/, '$1,$2,$3').replace(/(\d)(\d\d\d$)/, '$1,$2');
            //console.log('votesT:', votesT);
        }
        // The code below expects arrays (originally returned by string match)
        var ratingM = [ratingT, ratingT + "/10"];
        var votesM  = [votesT, votesT];

        //console.log('ratingM', ratingM);
        //console.log('votesM', votesM);

        // This doesn't work on the new version of the site
        //if (/\(awaiting \d+ votes\)|\(voting begins after release\)|in development,/i.test (resp.responseText) ) {
        // hopefully this will work better
        if (ratingT == '' || votesT == '') {
                ratingTxt   = "NR";
                isError     = false;
                colnumber = 0;
        } else {
           if (ratingM  &&  ratingM.length > 1  &&  votesM  &&  votesM.length > 1) {
               isError = false;

               justrate = ratingM[1].substr(0, ratingM[1].indexOf("/"));
               // For countries which use ',' instead of '.' for decimal point
               justrate = justrate.replace(',', '.');

               // Let's try the metascore instead
               // Not all movied have a metascore
               var metaScoreElem = showMetaScore && doc.querySelector('.score-meta');
               //var metaScore = metaScoreElem && (Number(metaScoreElem.textContent) / 10).toLocaleString(undefined, { minimumFractionDigits: 1, maximumFractionDigits: 1 });
               var metaScore = metaScoreElem && metaScoreElem.textContent;
               var metaScoreColor = metaScoreElem && metaScoreElem.style.backgroundColor;

               var votes = votesM[1];
               var votesNum = Number(votes.replace(',', '', 'g'));
               var commas_found = (votes.match(/,/g) || []).length;
               if (commas_found === 1) {
                   votes = votes.replace(/,\d\d\d$/, 'k');
               } else if (commas_found === 2) {
                   votes = votes.replace(/,\d\d\d,\d\d\d$/, 'M');
               }

               // ratingTxt   = ratingM[1] + " - " + votesM[1];
               // We use the element style to override IMDB's reset
               ratingTxt   = "<strong style=\"font-weight: bolder\">" + justrate + "</strong>" + " / " + votes;
               //ratingTxt   = "<strong>" + (metaScoreElem ? metaScore : justrate) + "</strong>" + " / " + votes;
               //ratingTxt   = "<strong>" + (metaScoreElem ? metaScore : justrate) + "</strong>" + " / " + votes + (metaScoreElem ? " (" + justrate + "i)" : "" );
               //ratingTxt   = "<strong>" + justrate + "</strong>" + " / " + votes + (metaScoreElem ? " (<strong>" + metaScore + "</strong> meta)" : "" );
               colnumber = Math.round(justrate);
               // If metaScore was found, use that for the colour instead of the IMDB rating.  But since metascores are lower than imdb scores, add 1.5.
               //colnumber = Math.round(metaScoreElem ? metaScore / 10 + 1.5 : justrate);

               //if (metaScoreElem) {
               //    justRate = metaScore / 10;
               //}
           }
        }
    }

    //console.log('ratingTxt', ratingTxt);
    //console.log('justrate', justrate);

    // NOTE: I switched from <b> to <strong> simply because on Season pages, the rating injected after episode titles was getting uglified by an IMDB CSS rule: .list_item .info b { font-size: 15px; }
    //targetLink.setAttribute("title", "Rated " + ratingTxt.replace(/<\/*strong>/g,'').replace(/\//,'by') + " users." );
    targetLink.setAttribute("title", `Rated ${justrate} by ${votes} users.`);

    if (!(justrate > 0)) {
        return;
    }


    // Slowly approach full opacity as votesNum increases.  10,000 votes results in opacity 0.5 (actually 0.6 when adjusted).
    var opacity = 1 - 1 / (1 + 0.0001 * votesNum);
    // Actually let's not start from 0; we may still want to see the numbers!
    opacity = 0.2 + 0.8*opacity;
    // Don't use too many decimal points; it's ugly!
    //opacity = Math.round(opacity * 10000) / 10000;
    opacity = opacity.toFixed(3);

    var colors = ["#Faa", "#Faa","#Faa", "#Faa","#Faa", "#F88","#Faa", "#ff7","#7e7", "#5e5", "#0e0", "#ddd"];
    var bgCol = colors[colnumber];
    //var hue = justrate <= 6 ? 0 : justrate <= 8 ? 120 * (justrate - 6) / 2 : 120;
    //var bgCol = `hsla(${hue}, 100%, 60%, ${opacity})`;
    var resltSpan       = document.createElement ("span");
    // resltSpan.innerHTML = '<b><font style="border-radius: 5px;padding: 1px;border: #575757 solid 1px; background-color:' + color[colnumber] + ';">' + ' [' + ratingTxt + '] </font></b>&nbsp;';
    // resltSpan.innerHTML = '<b><font style="background-color:' + justrate + '">' + ' [' + ratingTxt + '] </font></b>&nbsp;';
    // I wanted vertical padding 1px but then the element does not fit in the "also liked" area, causing the top border to disappear!  Although reducing the font size to 70% is an alternative.
    resltSpan.innerHTML = '&nbsp;<font style="font-weight: normal;font-size: 80%;opacity: '+opacity+';border-radius: 3px;padding: 0.1em 0.6em;border: rgba(0,0,0,0.1) solid 1px; background-color:' + bgCol + ';color: black;">' + '' + ratingTxt + '</font>';

    if (showAsStar) {
        resltSpan.innerHTML = `
            <div class="ipl-rating-star" style="font-weight: normal">
                <span class="ipl-rating-star__star">
                    <svg class="ipl-icon ipl-star-icon  " xmlns="http://www.w3.org/2000/svg" fill="#000000" height="24" viewBox="0 0 24 24" width="24">
                        <path d="M0 0h24v24H0z" fill="none"></path>
                        <path d="M12 17.27L18.18 21l-1.64-7.03L22 9.24l-7.19-.61L12 2 9.19 8.63 2 9.24l5.46 4.73L5.82 21z"></path>
                        <path d="M0 0h24v24H0z" fill="none"></path>
                    </svg>
                </span>
                <span class="ipl-rating-star__rating">${justrate}</span>
            </div>
        `;
    }

    if (isError)
        resltSpan.style.color = 'red';

    //var targetLink      = resp.context;
    //console.log ("targetLink: ", targetLink);

    // The "More like this" cards have a vertical flowing grid, so if we want rating and metascore to appear next to each other, they will need a container
    var container = document.createElement('div');
    container.style.display = 'inline-block';
    container.appendChild(resltSpan);

    //targetLink.parentNode.insertBefore (container, targetLink);
    targetLink.parentNode.insertBefore (container, targetLink.nextSibling);

    if (metaScoreElem) {
        // I am reluctant to move an element from another document into this one, multiple times.
        // Therefore we create a new element, like the original.
        var newMetaScoreElem = document.createElement(metaScoreElem.tagName);
        //newMetaScoreElem.outerHTML = metaScoreElem.outerHTML;
        newMetaScoreElem.className = metaScoreElem.className;
        newMetaScoreElem.textContent = metaScoreElem.textContent;
        newMetaScoreElem.style.backgroundColor = metaScoreElem.style.backgroundColor;
        // Missing despite the class.  It seems some pages don't include the .score-meta CSS
        newMetaScoreElem.style.color = 'white';
        newMetaScoreElem.style.padding = '2px';
        //resltSpan.parentNode.insertBefore (newMetaScoreElem, resltSpan.nextSibling);
        //resltSpan.parentNode.insertBefore (document.createTextNode(' '), resltSpan.nextSibling);
        container.appendChild(document.createTextNode(' '));
        container.appendChild(newMetaScoreElem);
    }
}

//--- Create the continue button
var continueBttn        = document.createElement ("button");
continueBttn.innerHTML  = "Get more ratings";

continueBttn.addEventListener ("click", function (){
        fetchedLinkCnt              = 0;
        continueBttn.style.display  = 'none';
        processIMDB_Links ();
    },
    false
);

if (showGetMoreRatings) {
    // Old way: Show the "Get more ratings" button at the top of the screen, so the user can click it after loading more titles
    // Now the site hides some of the Credits of an individual behind a "See all" button
    // Ideally we would trigger automatically when the new results are loaded
    // But until then, we present this button, so the user can manually trigger a refetch
    // Styling from Pharaoh2k
    continueBttn.style.display = 'inline';
    continueBttn.style.top = '0px';
    continueBttn.style.left = '50%';
    continueBttn.style.position = 'fixed';
    //continueBttn.style.height = '30px';
    //continueBttn.style.width = '170px';
    //continueBttn.style.color = 'black';
    continueBttn.style.zIndex = '1000';
    //continueBttn.style.backgroundColor = 'rgba(245, 245, 149, 0.7)';
    //continueBttn.style.boxShadow = '0 6px 6px rgb(0 0 0 / 60%)';
    continueBttn.style.boxShadow = '0 6px 6px #0004';
    continueBttn.style.cursor = 'pointer';
    // Borrow styling from the website
    continueBttn.className = 'ipc-btn ipc-btn--theme-base ipc-btn--core-accent1';
    continueBttn.style.padding = '0 1rem';
    document.body.appendChild(continueBttn);
} else {
    var seeMoreButton = document.querySelector('.ipc-see-more__button');
    if (seeMoreButton) {
        // New way: Load the new ratings automatically after the "See more" button is clicked
        seeMoreButton.addEventListener('click', function (){
            setTimeout(() => { continueBttn.click() }, 3000);
        });
    }
}

processIMDB_Links ();

if (addRatingToTitle) {
    setTimeout(function () {
        // Selectors for old site and new site
        var foundRating = document.querySelectorAll('.ratingValue [itemprop=ratingValue], ' + ratingSelectorNew);
        if (foundRating.length >= 1) {
            var rating = foundRating[0].textContent;
            if (rating.match(/^[0-9]\.[0-9]$/)) {
                document.title = `(${rating}) ` + document.title;
            }
        }
    }, 2000);
}