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E621 Quick Download

Adds A Quick Download Button

Versión del día 24/08/2022. Echa un vistazo a la versión más reciente.

// ==UserScript==
// @name         E621 Quick Download
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  Adds A Quick Download Button
// @author       rafa_br34#9060
// @match        https://e621.net/*
// @icon         https://www.google.com/s2/favicons?sz=64&domain=e621.net
// @grant        GM.xmlHttpRequest
// @license      GPL-2.0
// ==/UserScript==

(async function () {
    const E621_Images = "https://static1.e621.net/data"



    var g_DataElement = undefined
    var g_Buttons = []
    var g_TotalDownloads = 0
    var g_DownloadQueue = []

    function Sleep(ms) {
        return new Promise(resolve => setTimeout(resolve, ms));
    }

    function RequestWriteFile(Data, FileName) {
        var TempElement = document.createElement("a");
        var URL = window.URL.createObjectURL(Data/*new Blob([Data], "octet/stream")*/)
        TempElement.setAttribute("href", URL);
        TempElement.setAttribute("download", FileName);
        document.body.appendChild(TempElement);
        TempElement.click();
        document.body.removeChild(TempElement);
        window.URL.revokeObjectURL(URL)

    }


    


    function DownloadImage(ImageHashMD5, FileFormat, SelfId) {
        var FirstByte = ImageHashMD5.substr(0, 2)
        var SecondByte = ImageHashMD5.substr(2, 2)

        // CDN/FirstByte/SecondByte/ImageHash.FileFormat
        var Url = `${E621_Images}/${FirstByte}/${SecondByte}/${ImageHashMD5}.${FileFormat}`
        //console.log(Buttons[SelfId])
        g_Buttons[SelfId][1].innerHTML = "Downloading..."
        
        
        GM.xmlHttpRequest({
            binary: true,
            method: "GET",
            responseType: "blob",
            url: Url,
            onload: async function (Response) {
                console.log(Response)
                try {
                    if (Response.status != 200) {
                        g_Buttons[SelfId][1].innerHTML = "Failed(Http), Retrying..."
                        await Sleep(1000)
                        DownloadImage(ImageHashMD5, FileFormat, SelfId)
                    }
                    else {
                        g_Buttons[SelfId][1].innerHTML = "Done!"
                        g_DownloadQueue.push([`${ImageHashMD5}.${FileFormat}`, Response.response])
                        g_TotalDownloads++
                        await Sleep(1000)
                        g_Buttons[SelfId][1].innerHTML = "Download"
                    }
                }
                catch (Exception) {
                    //console.log(Exception)
                    g_Buttons[SelfId][1].innerHTML = "Failed(Exception), Retrying..."
                    await Sleep(1000)
                    DownloadImage(ImageHashMD5, FileFormat, SelfId)
                }

                
            }
        });

    }

    var RootDiv = document.createElement("div")
    var Posts = document.getElementById("posts")
    Posts.insertBefore(RootDiv, Posts.firstChild)

    var DownloadAllButton = document.createElement("button")
    RootDiv.appendChild(DownloadAllButton)
    DownloadAllButton.innerHTML = "Download All In Page"
    DownloadAllButton.setAttribute("style", "user-select: auto; border-radius: 0px; background-color: rgb(123, 37, 71); color: #ffffff;")

    DownloadAllButton.addEventListener("click",
        () => {
            for (Button of g_Buttons) {
                Button[1].click()
            }
        }
    )

    var g_DataElement = document.createElement("div")

    RootDiv.appendChild(g_DataElement);


    var Runner = async function () {
        while (true) {
            if (g_DownloadQueue.length > 0) {
                var Data = g_DownloadQueue.pop()
                RequestWriteFile(Data[1], Data[0])
            }
            await Sleep(100);
        }
    }
    Runner();

    while (true) {
        for (var Object of document.getElementsByTagName("article")) {
            var NewButton = null


            if (g_Buttons.find((Button) => { return Button[0] == Object })) {
                continue
            }
            

            const ImageHash = Object.getAttribute("data-md5");
            const FileFormat = Object.getAttribute("data-file-ext");
            const TableSize = g_Buttons.length

            if (!GM || !GM.xmlHttpRequest) {
                NewButton = document.createElement("a")
                NewButton.setAttribute("href", `${E621_Images}/${ImageHash.substr(0, 2)}/${ImageHash.substr(2, 2)}/${ImageHash}.${FileFormat}`)
                NewButton.setAttribute("download", `${ImageHash}.${FileFormat}`)
                NewButton.setAttribute("target", "_blank")
            }
            else {
                NewButton = document.createElement("button")
                NewButton.addEventListener("click", () => { DownloadImage(ImageHash, FileFormat, TableSize) })
                NewButton.setAttribute("style", "user-select: auto; border-radius: 0px; background-color: rgb(37, 71, 123); color: #ffffff;")
            }

            NewButton.innerHTML = "Download"
            Object.appendChild(NewButton)
            g_Buttons.push([Object, NewButton])
        }

        g_DataElement.innerHTML = ` Posts: ${g_Buttons.length} Total Downloads: ${g_TotalDownloads} Queued: ${g_DownloadQueue.length}`
        
        await Sleep(1000);
    }



})();