// ==UserScript==
// @name         Thread Rebuilder
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  try to take over the world!
// @author       You
// @match https://boards.4chan.org/*/thread/*
// @match http://boards.4chan.org/*/thread/*
// @grant         GM_xmlhttpRequest
// @downloadURL none
// ==/UserScript==

var board = "qa";
var threadData = [['Comment'], ['Image URLs'], ['Image Names'] ,['Post No.']];
var semaphore = 1;
var semaphore_posts = 1;
//var imgURL = "";

//1) CREATE INTERFACE

var enhance4ChanX = function(){

    if(document.getElementById("qrRebuilder") !== null) qrWindow.removeChild(document.getElementById("qrImages"));
    document.getElementById("dump-button").click();
    
    console.log(document.getElementById("qr").getElementsByTagName("TEXTAREA")[0]);
    var dList = document.getElementById("dump-list");
    var filenamecontainer = document.getElementById("qr-filename-container");
    var BGImg = "";
    var oldBGImg = "";

    /*
    var observer = new MutationObserver(function(mutate){
        BGImg = dList.firstChild.style.backgroundImage;
        if(BGImg !== oldBGImg && imgURL !== ""){
            console.log("CHANGED");
            dList.firstChild.style.backgroundImage = "url(" + imgURL + ")";
            console.log("CHANGED");
            oldBGImg = dList.firstChild.style.backgroundImage;
            console.log("CHANGED");
            console.log(imgURL);
        }
        else if (imgURL == ""){

        }
    });
    observer.observe(dList , {attributes: true,subtree:true, childList: true, characterData: true });*/

    document.getElementById("qr-filerm").addEventListener("click", function(){imgURL = "";});



    var qrWindow = document.getElementById("qr");

    var qrTable = document.createElement("TABLE");
    qrTable.setAttribute("id", "qrRebuilder");
    qrTable.setAttribute("style", "text-align:center");
    qrWindow.appendChild(qrTable);
    qrWindow.appendChild(document.createElement("BR"));

    var instructionRow = document.createElement("TR");        
    var topRowNodes = [document.createElement("BR"),
                       document.createTextNode("Insert the thread number of the post to rebuild"),
                       document.createElement("BR"),
                       document.createTextNode("Must be in the 4chan archives"),
                       document.createElement("BR"),
                      ];
    topRowNodes.forEach(
        function(node){
            instructionRow.appendChild(node);
        });
    qrTable.appendChild(instructionRow);

    var threadRow = document.createElement("TR");
    var secondRowNodes = [
        document.createTextNode("Thread: "),
        document.createElement("INPUT"),
        document.createElement("INPUT"),
    ];
    secondRowNodes.forEach(
        function(node){
            threadRow.appendChild(node);
        });
    qrTable.appendChild(threadRow);
    
    secondRowNodes[1].setAttribute("ID", "threadInput");
    secondRowNodes[1].setAttribute("style", "width:44.9%");
    
    secondRowNodes[2].setAttribute("ID", "threadButton");
    secondRowNodes[2].setAttribute("type", "button");
    secondRowNodes[2].setAttribute("value", "Set Rebuild Queue");
    secondRowNodes[2].addEventListener("click", function(){
        console.log("exce");
        getThread(secondRowNodes[1].value);
        //wait until done
        postID = setInterval(postRoutine, 1000);
    });

};

var len = 0;
var i = 0;

var postID = "";
var postRoutine = function(){
    if(semaphore == 0){
        semaphore--;
        len = threadData[0].length;
        console.log(len);
        fillID = setInterval(fillRoutine, 10);
        stopRoutine();
    }
};
var stopRoutine = function(){
    console.log("Post Ends");
    clearInterval(postID);
};

var fillID  = "";
var fillRoutine = function(){
    console.log(semaphore_posts + " " + i);
    if(i >= len) {semaphore_posts  = 0 ; stopFillRoutine();}
    else if(semaphore_posts == 1){
        semaphore_posts--;
        createPost(threadData[0][i], threadData[1][i], threadData[2][i]);
        i++;
    }
};

var stopFillRoutine = function(){
    console.log("Fill Ends");
    clearInterval(fillID);
};

//2) GET ARCHIVED THREAD
var getThread = function(threadNo){
    threadData = [[], [], [], []];

    URL  = "https://a.4cdn.org/" + board + "/thread/" + threadNo + ".json";
    console.log(URL);
    var xhr = new GM_xmlhttpRequest(({
        method: "GET",
        url: URL, 
        responseType : "json",
        onload: function(data){
            data = data.response;
            console.log(data);
            if(data == undefined) alert("Invalid Thread ID: " + threadNo + ".\n4chan Archive Only");
            else{
                var len = data["posts"].length;
                for(var i = 1 ; i < len ; i++){
                    var comment = data["posts"][i]["com"];
                    if(comment !== undefined)
                        threadData[0].push(comment);
                    else 
                        threadData[0].push(-1);
                    
                    var filename = "" + data["posts"][i]["tim"] + data["posts"][i]["ext"];
                    if(filename !== undefined && filename.indexOf("undefined") == -1)
                       threadData[1].push("https://i.4cdn.org/" + board + "/" + filename);
                    else  threadData[1].push(-1);
                    
                    threadData[2].push(data["posts"][i]["filename"]);
                    
                    threadData[3].push(data["posts"][i]["no"]);
                }
            }
            console.log(threadData);
            semaphore--;
        }
    }));

};
//3) RIP POSTS AND IMAGES
var createPost = function(text, imageURL, imageName){
    console.log("url: " + imageURL);
    if(imageURL != -1){
        var xhr = new GM_xmlhttpRequest(({
            method: "GET", 
            url: imageURL, 
            responseType : "arraybuffer",
            onload: function(response)
            {            
                var blob;
                var ext = ".jpg";
                if(imageURL.indexOf(".jpg") > -1){
                    blob = new Blob([response.response], {type:"image/jpeg"});
                    ext = ".jpg";
                }
                else if(imageURL.indexOf(".png") > -1){
                    blob = new Blob([response.response], {type:"image/png"});
                    ext = ".png";
                }
                else if(imageURL.indexOf(".gif") > -1){
                    blob = new Blob([response.response], {type:"image/gif"});
                    ext = ".gif";
                }
                else if(imageURL.indexOf(".webm") > -1){
                    blob = new Blob([response.response], {type:"video/webm"});
                    ext = ".webm";
                }

                var name = imageName + ext;

                console.log("----------------");
                console.log("Blob: "); console.log(blob);
                console.log("MIME: " + blob.type);
                console.log("Name: " + name);

                //SEND RESULTING RESPONSE TO 4CHANX FILES === QRSetFile
                var detail = {file:blob, name:name};
                if (typeof cloneInto === 'function') {
                    detail  = cloneInto(detail , document.defaultView);
                }
                console.log("Detail: ");console.log(detail);
                document.dispatchEvent(new CustomEvent('QRSetFile', {bubbles:true, detail}));

                if(text !== "" && text !== undefined && text !== -1) createPostComment(text);
                
                document.getElementById("add-post").click();
                semaphore_posts++;
            }
        }));
    }
    else{
        createPostComment(text);
        document.getElementById("add-post").click();
        semaphore_posts++;
    }
};

//4) CREATE POST QUEUE
var createPostComment = function(text){
    console.log("text-Before: " + text);
    
    text = text.replace(/<a href="\/[a-zA-Z]+\/" class="quotelink">&gt;&gt;&gt;/g, ">>>");
    text = text.replace(/<a href="#p[0-9]+" class="quotelink">&gt;&gt;/g, ">>");
    text = text.replace(/<span class="quote">&gt;/g, ">");
    text = text.replace(/<br>/g, "\n");
    text = text.replace(/&#039;/g, "'");
    text = text.replace(/<\/a>/g, "");
    text = text.replace(/<wbr>/g, "");
    text = text.replace(/<\/span>/g, "");
    
    console.log("text-After: " + text);
    if(text.match(/^>>[0-9]+$/g))   document.getElementById("qr").getElementsByTagName("TEXTAREA")[0].value = text +  "\n" + Math.floor(Math.random() * 1000).toString(62)/*.replace(/[^a-z]+/g, '')*/;
    else document.getElementById("qr").getElementsByTagName("TEXTAREA")[0].value = text;
};


window.onload = function(){
    console.log(document.links);
    var len = document.links.length;
    for(var i = 0 ; i < len ; i++){
        document.links[i].addEventListener("click", enhance4ChanX);
    }

    //ENHANCE DUMP TABS (COVER, 482PX - 482PX)
    //DUMP LIST MAX-HEIGHT TO 490

    document.getElementById("fourchanx-css").textContent += ".qr-preview { height: 482px; width: 482px; background-size: cover;}";
    //document.getElementById("fourchanx-css").textContent += "#qr { min-width:490px;}";
    document.getElementById("fourchanx-css").textContent += "#dump-list { min-height: 400px; width: 509px;}";

};