// ==UserScript==
// @name        Image Loader Placeholder Remover
// @namespace   blankie-scripts
// @match       http*://*/*
// @grant       none
// @version     1.16.0
// @author      blankie
// @run-at      document-end
// @description Removes image loading placeholders
// ==/UserScript==

"use strict";

function isUrlLike(url) {
    return url && /^(?:\/|https?:\/\/)\S+$/.test(url);
}
function findUrl(element) {
    if (window.location.host === "www.vice.com") {
        let picture = element.parentElement;
        let source = picture && picture.localName === "picture" ? picture.querySelector("source") : null;
        if (source) {
            return source.srcset;
        }
    }

    // Examples of data-src:
    // - https://closeronline.co.uk
    // - https://closeronline.co.uk/real-life/news/ever-used-excuses-documented-spreadsheet-man-used-expose-wife-s-lack-sex
    // - https://daramiblog.com
    // - https://daramiblog.com/how-to-group-irregular-verbs-for-more-efficient-learning/
    // - https://www.bleepingcomputer.com/
    // - https://www.bleepingcomputer.com/news/microsoft/windows-11-snipping-tool-privacy-bug-exposes-cropped-image-content/
    // - https://blog.joshumax.me/general/2021/08/11/running-doom-on-captioncall.html
    // - https://legendsoflocalization.com/common-problems-when-translating-games-into-japanese/
    // - https://knowyourmeme.com/
    // - https://knowyourmeme.com/memes/saddam-husseins-hiding-place
    if (isUrlLike(element.dataset.src)) {
        return element.dataset.src;
    }

    for (let attr of element.attributes) {
        // Examples of lazy:
        // - https://daramiblog.com/
        // - https://daramiblog.com/how-to-group-irregular-verbs-for-more-efficient-learning/
        // - https://www.theautopian.com/
        // - https://www.theautopian.com/nobody-wants-touch-screen-glove-box-latches-and-it-needs-to-stop-now/
        // - https://vulcan.io/blog/
        // - https://vulcan.io/blog/ai-hallucinations-package-risk
        // Examples of src:
        // - https://vulcan.io/blog/
        // - https://vulcan.io/blog/ai-hallucinations-package-risk
        // Examples of loading:
        // - https://closeronline.co.uk
        // - https://closeronline.co.uk/real-life/news/ever-used-excuses-documented-spreadsheet-man-used-expose-wife-s-lack-sex
        // Examples of original:
        // - https://www.pcgamer.com/
        // - https://www.pcgamer.com/windows-95-theme-for-windows-10/
        // Example of img-url:
        // - https://www.makeuseof.com/windows-11-resize-taskbar/
        if (!attr.name.includes("lazy") && !(attr.name.includes("src") && attr.name !== "src") && !attr.name.includes("loading") && !attr.name.includes("original") && !attr.name.includes("img-url")) {
            continue;
        }
        if (!isUrlLike(attr.value)) {
            continue;
        }
        return attr.value;
    }

    return null;
}

function unhideElement(element) {
    let style = getComputedStyle(element);

    // Examples of opacity:
    // - https://closeronline.co.uk
    // - https://closeronline.co.uk/real-life/news/ever-used-excuses-documented-spreadsheet-man-used-expose-wife-s-lack-sex
    // - https://www.vice.com/en/article/dy73n7/ehallpass-1000-thousand-schools-monitor-bathroom
    // - https://daramiblog.com/
    // - https://daramiblog.com/how-to-group-irregular-verbs-for-more-efficient-learning/
    // - https://www.wired.com/
    // - https://www.wired.com/story/researcher-fooled-a-google-ai-into-thinking-a-rifle-was-a-helicopter/
    if (style.opacity === "0") {
        element.style.opacity = 1;
    }

    // Examples of display:
    // - https://closeronline.co.uk
    // - https://closeronline.co.uk/real-life/news/ever-used-excuses-documented-spreadsheet-man-used-expose-wife-s-lack-sex
    if (style.display === "none") {
        element.style.display = "block";
    }

    // Example: https://www.makeuseof.com/windows-11-resize-taskbar/
    if (window.location.host === "www.makeuseof.com") {
        element.style.paddingBottom = 0;
    }
}

function getLazyloaderClasses(element) {
    let classes = [];

    for (let className of element.classList) {
        // Examples of loading:
        // - https://closeronline.co.uk
        // - https://closeronline.co.uk/real-life/news/ever-used-excuses-documented-spreadsheet-man-used-expose-wife-s-lack-sex
        // Examples of lazy:
        // - https://www.vice.com/en/article/dy73n7/ehallpass-1000-thousand-schools-monitor-bathroom
        // - https://www.pcgamer.com/
        // - https://www.pcgamer.com/windows-95-theme-for-windows-10/
        // - https://www.theautopian.com/
        // - https://www.theautopian.com/nobody-wants-touch-screen-glove-box-latches-and-it-needs-to-stop-now/
        // - https://vulcan.io/blog/
        // - https://vulcan.io/blog/ai-hallucinations-package-risk
        // Examples of responsive:
        // - https://www.vice.com/en/article/dy73n7/ehallpass-1000-thousand-schools-monitor-bathroom
        // - https://www.wired.com (it's a parent of lazyloaded <img>s)
        // - https://www.wired.com/story/researcher-fooled-a-google-ai-into-thinking-a-rifle-was-a-helicopter/ (it's a parent of lazyloaded <img>s)
        // Examples of preload:
        // - https://restofworld.org/
        // - https://restofworld.org/2023/parent-facing-matchmaking-apps-china/
        // Examples of placeholder:
        // - https://theconversation.com
        // - https://theconversation.com/yall-that-most-southern-of-southernisms-is-going-mainstream-and-its-about-time-193265
        if (className.includes("loading") || className.includes("lazy") || className.includes("responsive") || className.includes("preload") || className.includes("placeholder")) {
            classes.push(className);
        }
    }

    return classes;
}



function removePlaceholder(img) {
    let hasLinkParent = false;
    let parentElement = img.parentElement;
    while (parentElement) {
        hasLinkParent = hasLinkParent || parentElement.localName === "a";
        // Examples of hidden parents:
        // - https://www.wired.com/
        // - https://www.wired.com/story/researcher-fooled-a-google-ai-into-thinking-a-rifle-was-a-helicopter/
        let lazyLoaderClasses = getLazyloaderClasses(parentElement);
        if (lazyLoaderClasses.length !== 0) {
            unhideElement(parentElement);
            // Examples of pages with a blur applied to lazyloader classes:
            // - https://restofworld.org/
            // - https://restofworld.org/2023/parent-facing-matchmaking-apps-china/
            parentElement.classList.remove(...lazyLoaderClasses);
        }

        parentElement = parentElement.parentElement;
    }

    let url = findUrl(img);
    if (!url) {
        return;
    }
    let originalUrl = url;


    if (window.location.host === "www.vice.com") {
        let picture = img.parentElement;

        img.style.filter = "none";
        picture.style.opacity = 1;

        let urlObject = new URL(url, window.location);
        urlObject.search = "";
        originalUrl = urlObject.href;
        urlObject.search = "?resize=1024:*";
        url = urlObject.href;

        for (let source of picture.querySelectorAll("source")) {
            source.remove();
        }
    } else if (window.location.host === "closeronline.co.uk") {
        let urlObject = new URL(url, window.location);
        urlObject.search = "";
        originalUrl = urlObject.href;
        img.closest(".image-container").querySelector(".image-loading").remove();
    } else if (window.location.host === "theconversation.com") {
        let urlObject = new URL(url, window.location);
        urlObject.search = "";
        originalUrl = urlObject.href;
    }

    img.src = url;
    unhideElement(img);
    // commented out as some sites may visually break, such as:
    // https://legendsoflocalization.com/japans-mysterious-love-of-the-word-lets/#why-lets-is-so-common
    //img.classList.remove(...getLazyloaderClasses(img));

    if (!hasLinkParent) {
        let wrapper = document.createElement("a");
        img.replaceWith(wrapper);
        wrapper.href = originalUrl;
        wrapper.appendChild(img);
    }
}



for (let img of document.querySelectorAll("img")) {
    removePlaceholder(img);
}
// the reason we check for mutations for 1s after the page loads is because of <noscript> elements being faked by umatrix
let observer = new MutationObserver(function (mutations) {
    for (let mutation of mutations) {
        if (mutation.type !== "childList") {
            continue;
        }
        for (let node of mutation.addedNodes) {
            if (node.nodeType !== 1) {
                continue;
            }
            for (let img of node.querySelectorAll("img")) {
                removePlaceholder(img);
            }
        }
    }
});
observer.observe(document.body, {childList: true, subtree: true});
setTimeout(function() {
    observer.disconnect();
}, 1000);



// https://www.wikihow.com/Tie-Your-Shoes
if (window.location.host === "www.wikihow.com") {
    let style = document.createElement("style");
    style.textContent = ".image {display: block !important}";
    document.head.appendChild(style);

    for (let videoPlayer of document.querySelectorAll(".video-player")) {
        videoPlayer.querySelector(".m-video-controls").remove();

        let video = videoPlayer.querySelector("video");
        video.controls = 1;
        video.src = `/video${video.dataset.src}`;
    }
}