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E621 Utils

Adds Some Utilities For E621

You will need to install an extension such as Tampermonkey, Greasemonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Userscripts to install this script.

You will need to install an extension such as Tampermonkey to install this script.

You will need to install a user script manager extension to install this script.

(I already have a user script manager, let me install it!)

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

(I already have a user style manager, let me install it!)

// ==UserScript==
// @name         E621 Utils
// @namespace    http://tampermonkey.net/
// @version      0.1.4
// @description  Adds Some Utilities For E621
// @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_CDN = "https://static1.e621.net/data"
    const E621_Posts = "https://e621.net/posts"


    var g_DataElement = undefined
    var g_Posts = []

    var g_WriteFileQueue = []
    var g_TotalDownloads = 0
    var g_DownloadQueue = 0


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

    function RequestWriteFile(Data, FileName, Type="") {
        var TempElement = document.createElement("a");
        var URL = window.URL.createObjectURL(new Blob([Data], { type: "application/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 MakeE621_CDN_Url(ImageHashMD5, FileFormat) {
        var FirstByte = ImageHashMD5.substr(0, 2)
        var SecondByte = ImageHashMD5.substr(2, 2)

        // CDN/FirstByte/SecondByte/ImageHash.FileFormat
        return `${E621_Images_CDN}/${FirstByte}/${SecondByte}/${ImageHashMD5}.${FileFormat}`
    }


    async function DownloadImage(ImageHashMD5, FileFormat, SelfId) {


        var SelfButton = g_Posts[SelfId]["Data"]["DownloadButton"]

        var Done = false
        var IsDownloading = false
        var State = [false]
        g_DownloadQueue++;
        while (!Done) {
            SelfButton.innerHTML = "Downloading..."
            IsDownloading = true
            try {
                GM.xmlHttpRequest({
                    binary: true,
                    method: "GET",
                    responseType: "blob",
                    url: MakeE621_CDN_Url(ImageHashMD5, FileFormat),
                    onload: async function (Response) {
                        //console.log(Response)
                        try {
                            if (Response.status != 200) {
                                SelfButton.innerHTML = "Failed(Http), Retrying..."
                            }
                            else {
                                SelfButton.innerHTML = "Done!"
                                State = [true, `${ImageHashMD5}.${FileFormat}`, Response.response]
                            }
                        }
                        catch (Exception) {
                            console.log(Exception)
                            SelfButton.innerHTML = "Failed(Exception), Retrying..."
                        }

                        IsDownloading = false
                    },
                    onerror: async function (Response) {
                        SelfButton.innerHTML = "Failed(Error), Retrying..."
                        IsDownloading = false
                    },
                    onabort: async function (Response) {
                        SelfButton.innerHTML = "Failed(Aborted), Retrying..."
                        IsDownloading = false
                    }
                });
            }
            catch (Exception) {
                //console.log(Exception)
                IsDownloading = false
            }

            while (IsDownloading) {
                await Sleep(10)
            }

            if (State[0]) {
                Done = true
                State.splice(0, 1)
                g_WriteFileQueue.push(State)
                g_TotalDownloads++
                SelfButton.innerHTML = "Done"
                await Sleep(1000)
                SelfButton.innerHTML = "Download"
            }
            else {
                await Sleep(3000)
            }

        }


        g_DownloadQueue--;
    }

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



    // Download All Button
    {
        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",
            async () => {
                for (var Post of g_Posts) {
                    Post.Data.DownloadButton.click()
                    await Sleep(100);
                }
            }
        )
        RootDiv.appendChild(document.createElement("br"))
    }
    

    // Get Source Link List Button
    {
        var GetLinkList = document.createElement("button")
        RootDiv.appendChild(GetLinkList)
        GetLinkList.innerHTML = "Get List Of Image Links(Image Source)"
        GetLinkList.setAttribute("style", "user-select: auto; border-radius: 0px; background-color: rgb(123, 37, 71); color: #ffffff;")

        GetLinkList.addEventListener("click",
            async () => {
                var List = ""
                for (var Post of g_Posts) {
                    List += MakeE621_CDN_Url(Post.Data.MD5, Post.Data.FileFormat) + "\n"
                }
                g_WriteFileQueue.push(["SourceLinks.txt", List])
            }
        )
        RootDiv.appendChild(document.createElement("br"))
    }

    // Get Post Link List Button
    {
        var GetLinkList = document.createElement("button")
        RootDiv.appendChild(GetLinkList)
        GetLinkList.innerHTML = "Get List Of Posts Links(Post Link)"
        GetLinkList.setAttribute("style", "user-select: auto; border-radius: 0px; background-color: rgb(123, 37, 71); color: #ffffff;")

        GetLinkList.addEventListener("click",
            async () => {
                var List = ""
                for (var Post of g_Posts) {
                    List += `${E621_Posts}/${Post.Data.PostId}\n`
                }
                g_WriteFileQueue.push(["PostLinks.txt", List])
            }
        )
        RootDiv.appendChild(document.createElement("br"))
    }


    var g_DataElement = document.createElement("div")

    RootDiv.appendChild(g_DataElement);


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

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


            if (g_Posts.find((Post) => { return Post.Element == Object })) {
                continue
            }

            var SplittedUrl = Object.getAttribute("data-file-url").split("/")

            const ImageHash = (SplittedUrl[SplittedUrl.length - 1]).split(".")[0];
            const FileFormat = Object.getAttribute("data-file-ext");
            const TableSize = g_Posts.length

            //console.log("Hash ", ImageHash, " FileFormat ", FileFormat)
            if (!GM || !GM.xmlHttpRequest) {
                NewButton = document.createElement("a")
                NewButton.setAttribute("href", `${E621_Images_CDN}/${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_Posts.push({ Element: Object, Data: { PostId: Object.getAttribute("data-id"), MD5: ImageHash, FileFormat: FileFormat, DownloadButton: NewButton } })
        }

        g_DataElement.innerHTML = ` Posts: ${g_Posts.length} Total Downloads: ${g_TotalDownloads} Download Queue: ${g_DownloadQueue} Write Queue: ${g_WriteFileQueue.length}`

        await Sleep(1000);
    }



})();