4chan External Sounds (Gallery Fix)

Fork of 4chan External Sounds by Bakugo which works with the gallery view in 4chanX.

您需要先安装一个扩展,例如 篡改猴Greasemonkey暴力猴,之后才能安装此脚本。

您需要先安装一个扩展,例如 篡改猴暴力猴,之后才能安装此脚本。

您需要先安装一个扩展,例如 篡改猴暴力猴,之后才能安装此脚本。

您需要先安装一个扩展,例如 篡改猴Userscripts ,之后才能安装此脚本。

您需要先安装一款用户脚本管理器扩展,例如 Tampermonkey,才能安装此脚本。

您需要先安装用户脚本管理器扩展后才能安装此脚本。

(我已经安装了用户脚本管理器,让我安装!)

您需要先安装一款用户样式管理器扩展,比如 Stylus,才能安装此样式。

您需要先安装一款用户样式管理器扩展,比如 Stylus,才能安装此样式。

您需要先安装一款用户样式管理器扩展,比如 Stylus,才能安装此样式。

您需要先安装一款用户样式管理器扩展后才能安装此样式。

您需要先安装一款用户样式管理器扩展后才能安装此样式。

您需要先安装一款用户样式管理器扩展后才能安装此样式。

(我已经安装了用户样式管理器,让我安装!)

// ==UserScript==
// @name 4chan External Sounds (Gallery Fix)
// @namespace b4k
// @description Fork of 4chan External Sounds by Bakugo which works with the gallery view in 4chanX.
// @author Bakugo, elttil
// @version 1.7.0
// @match *://boards.4chan.org/*
// @match *://boards.4channel.org/*
// @run-at document-start
// ==/UserScript==

(function() {
    var doInit;
    var doParseGalleryFile;
    var doCreatePlayer;
    var doParseFile;
    var doParseFiles;
    var doPlayFile;
    var doPlayKey;
    var doMakeKey;

    var allow;
    var players;
    var isChanX;

    allow = [
        "4cdn.org",
        "catbox.moe",
        "dmca.gripe",
        "lewd.se",
        "pomf.cat",
        "zz.ht"
    ];

    document.addEventListener(
        "DOMContentLoaded",
        function(event) {
            setTimeout(
                function() {
                    if (
                        document.body.classList.contains("ws") ||
                        document.body.classList.contains("nws")
                    ) {
                        isChanX = false;
                        doInit();
                    }
                },
                (1)
            );
        }
    );

    document.addEventListener(
        "4chanXInitFinished",
        function(event) {
            if (
                document.documentElement.classList.contains("fourchan-x") &&
                document.documentElement.classList.contains("sw-yotsuba")
            ) {
                isChanX = true;
                doInit();
            }
        }
    );

    doInit = function() {
        var observer;

        if (players) {
            return;
        }

        players = {};

        doParseFiles(document.body);

        observer =
            new MutationObserver(
                function(mutations) {
                    mutations.forEach(
                        function(mutation) {
                            if (mutation.type === "childList") {
                                mutation.addedNodes.forEach(
                                    function(node) {
                                        if (node.className === "sauce") {
                                            node = node.parentNode.parentNode.parentNode;
                                        }
                                        if (node.nodeType === Node.ELEMENT_NODE) {
                                            doParseFiles(node);
                                            doPlayFile(node);
                                        }
                                    }
                                );
                            }
                        }
                    );
                }
            );

        observer
            .observe(
                document.body, {
                    childList: true,
                    subtree: true
                }
            );
    };

    doParseGalleryFile = function(file) {
        var fileLink;
        var fileName;
        var key;
        var match;
        var player;
        var link;

        fileLink = file.querySelector(".gal-name");

        if (!fileLink) {
            return;
        }

        fileName = fileLink.download;

        if (!fileName) {
            return;
        }

        doCreatePlayer(fileName, fileLink.href);
    };

    doParseFile = function(file) {
        var fileLink;
        var fileName;
        var key;
        var match;
        var player;
        var link;

        if (!file.classList.contains("file")) {
            return;
        }

        if (isChanX) {
            fileLink = file.querySelector(".fileText .file-info > a");
        } else {
            fileLink = file.querySelector(".fileText > a");
        }

        if (!fileLink) {
            return;
        }

        if (!fileLink.href) {
            return;
        }

        fileName = null;

        if (isChanX) {
            [
                file.querySelector(".fileText .file-info .fnfull"),
                file.querySelector(".fileText .file-info > a")
            ].some(
                function(node) {
                    if (node) {
                        if (node.textContent) {
                            fileName = node.textContent;
                            return true;
                        }
                    }

                    return false;
                }
            );
        } else {
            [
                file.querySelector(".fileText"),
                file.querySelector(".fileText > a")
            ].some(
                function(node) {
                    if (node) {
                        if (node.title) {
                            fileName = node.title;
                            return true;
                        }

                        if (
                            node.tagName === "A" &&
                            node.textContent
                        ) {
                            fileName = node.textContent;
                            return true;
                        }
                    }

                    return false;
                }
            );
        }

        if (!fileName) {
            return;
        }
        doCreatePlayer(fileName, fileLink.href);
    };

    doCreatePlayer = function(fileName, fileLink) {
        var fileLink;
        var fileName;
        var key;
        var match;
        var player;
        var link;

        fileName = fileName.replace(/\-/, "/");

        key = doMakeKey(fileLink);

        if (!key) {
            return;
        }

        if (players[key]) {
            return;
        }

        match = fileName.match(/[\[\(\{](?:audio|sound)[ \=\:\|\$](.*?)[\]\)\}]/i);

        if (!match) {
            return;
        }

        link = match[1];

        if (link.includes("%")) {
            try {
                link = decodeURIComponent(link);
            } catch (error) {
                return;
            }
        }


        if (link.match(/^(https?\:)?\/\//) === null) {
            link = (location.protocol + "//" + link);
        }

        try {
            link = new URL(link);
        } catch (error) {
            return;
        }

        if (
            allow.some(
                function(item) {
                    return (
                        link.hostname.toLowerCase() === item ||
                        link.hostname.toLowerCase().endsWith("." + item)
                    );
                }
            ) == false
        ) {
            return;
        }

        player = new Audio();

        player.preload = "none";
        player.volume = 0.80;
        player.loop = true;

        player.src = link.href;

        players[key] = player;
    }

    doParseFiles = function(target) {
        target.querySelectorAll(".gal-labels")
            .forEach(
                function(file) {
                    doParseGalleryFile(file);
                }
            );
        target.querySelectorAll(".post")
            .forEach(
                function(post) {
                    if (post.parentElement.parentElement.id === "qp") {
                        return;
                    }

                    if (post.parentElement.classList.contains("noFile")) {
                        return;
                    }


                    post.querySelectorAll(".file")
                        .forEach(
                            function(file) {
                                doParseFile(file);
                            }
                        );
                }
            );
    };

    doPlayFile = function(target) {
        var key;
        var player;
        var interval;
        var fileLink;
        fileLink = target.querySelector(".gal-image > a > img");
        if (null == fileLink) {
            fileLink = target.querySelector(".gal-image > a > video");
        }
        if (null != fileLink) {
            doPlayKey(fileLink);
            return;
        }

        if (isChanX) {
            if (!(
                    target.id === "ihover" ||
                    target.className === "full-image"
                )) {
                return;
            }
        } else {
            if (!(
                    target.id === "image-hover" ||
                    target.className === "expanded-thumb" ||
                    target.className === "expandedWebm"
                )) {
                return;
            }
        }

        if (!target.src) {
            return;
        }

        doPlayKey(target);
    };

    doPlayKey = function(target) {
        var key
        var player;
        var interval;

        key = doMakeKey(target.src);
        if (!key) {
            return;
        }

        player = players[key];

        if (!player) {
            return;
        }

        if (!player.paused) {
            if (player.dataset.play == 1) {
                if (isChanX) {
                    return;
                } else {
                    player.dataset.again = 1;
                }
            } else {
                player.pause();
            }
        }

        if (player.dataset.play != 1) {
            player.dataset.play = 1;
            player.dataset.again = 0;
            player.dataset.moveTime = 0;
            player.dataset.moveLast = 0;
        }

        switch (target.tagName) {
            case "IMG":
                player.loop = true;

                if (player.dataset.again != 1) {
                    player.currentTime = 0;
                    player.play();
                }

                break;

            case "VIDEO":
                player.loop = false;
                player.currentTime = target.currentTime;
                player.play();
                break;

            default:
                return;
        }

        if (player.paused) {
            document.dispatchEvent(
                new CustomEvent(
                    "CreateNotification", {
                        bubbles: true,
                        detail: {
                            type: "warning",
                            content: "Your browser blocked autoplay, click anywhere on the page to activate it and try again.",
                            lifetime: 5
                        }
                    }
                )
            );
        }

        interval =
            setInterval(
                function() {
                    if (document.body.contains(target)) {
                        if (target.tagName === "VIDEO") {
                            if (target.currentTime != (+player.dataset.moveLast)) {
                                player.dataset.moveTime = Date.now();
                                player.dataset.moveLast = target.currentTime;
                            }

                            if (player.duration != NaN) {
                                if (
                                    target.paused == true ||
                                    target.duration == NaN ||
                                    target.currentTime > player.duration ||
                                    ((Date.now() - (+player.dataset.moveTime)) > 300)
                                ) {
                                    if (!player.paused) {
                                        player.pause();
                                    }
                                } else {
                                    if (
                                        player.paused ||
                                        Math.abs(target.currentTime - player.currentTime) > 0.100
                                    ) {
                                        player.currentTime = target.currentTime;
                                    }

                                    if (player.paused) {
                                        player.play();
                                    }
                                }
                            }
                        }
                    } else {
                        clearInterval(interval);

                        if (player.dataset.again == 1) {
                            player.dataset.again = 0;
                        } else {
                            player.pause();
                            player.dataset.play = 0;
                        }
                    }
                },
                (1000 / 30)
            );
    };


    doMakeKey = function(link) {
        var match;

        match = link.match(/\.(?:4cdn|4chan)\.org\/(.+?)\/(\d+?)\.(.+?)$/);

        if (match) {
            return (match[1] + "." + match[2]);
        }

        return null;
    };
})();