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chan embedded quote fixer

Puts embedded quotes in end of post rather than beginning, can also click on checkboxes in posts to remove them, also works on 4channel boards, can tesselate whole thread/inlined posts, can change size of expanded media, can color posts to help keep track of embedded conversations, can hide extra options on each post via toggle (posts/thread), can manually drag posts around page via toggle (posts/thread), can remove (You)s, can change text flow on expanded images

질문, 리뷰하거나, 이 스크립트를 신고하세요. 
// ==UserScript==
// @name         chan embedded quote fixer
// @namespace    http://tampermonkey.net/
// @version      1.6
// @description  Puts embedded quotes in end of post rather than beginning, can also click on checkboxes in posts to remove them, also works on 4channel boards, can tesselate whole thread/inlined posts, can change size of expanded media, can color posts to help keep track of embedded conversations, can hide extra options on each post via toggle (posts/thread), can manually drag posts around page via toggle (posts/thread), can remove (You)s, can change text flow on expanded images
// @author       DUVish
// @match        http://boards.4chan.org/*/thread/*
// @match        https://boards.4chan.org/*/thread/*
// @match        https://boards.4channel.org/*/thread/*
// @match        http://boards.4channel.org/*/thread/*
// @grant        none
// ==/UserScript==

document.querySelector("head").innerHTML += `
  <style>
    div.post {overflow: visible;}
    div.image-expanded:not(.regularTextFlow) {display: unset !important;}
    div.image-expanded.regularTextFlow {display: table !important;}
  </style>
`;

//window.onload(function() {
    setTimeout(function() {
        let quotesList = Array.from(document.getElementsByClassName("quotelink")).filter(node => window.getComputedStyle(node).getPropertyValue("font-size") === "10.6667px");

        quotesList.forEach(node => {
          node.addEventListener("click", qEV);
        });

        Array.from(document.getElementsByTagName("span")).filter(el => {
            try {
              if (el.children.length > 0 && el.children[0].classList.contains("quotelink")) return true;
            } catch(error) {
              //console.log("custom error in span EL", el);
              return false;
            }
        }).forEach(el => el.addEventListener("click", qSpanClick));

        addRemoveCapability();
        addCollapseAndExpand();
        addTessellationQuotes();
        addQuotedPostsContainer();
        addTessellationThread();
        addThreadWidthToggle();
        addMediaZoom();
        addMediaFlow();
        addColorPostsThread();
        addColorPosts();
        setPostColor();
        addCollapseExtraNodesToggle();
        addPostDraggableTogglePost();
        addPostsDraggableToggleThread();
        addRemoveYousInPost();
        addEditabilityToPost();
        addCollapseExtrasInPosts();
        addExpandExtrasInPosts();
        expandPostsPostOn();
    }, 2500);
//});

let greenTextStyler = `<style>
  blockquote > div > span.quote {
    color: #789922;
  }
</style>`;

document.querySelector("head").innerHTML += greenTextStyler;

//tessellation feature - move element all the way to the right, try and move up - if interfering with getBoundingClientRect in two axes, then move left, then try and move up again - repeat until both up and left are exhausted
  //repeat for all posts - tesselation would not just add display: flex and flex-wrap:wrap to thread container, but also margin/-margin to each individual post - can either add some caching capability by storing data on
  //dome nodes themselves, or just store all of the HTML before, revert on option, and re-compute each time, possibly also add to barchive, also add for within posts themselves

var postColor = '';
var colorDiff = 38;

if (window.location.href.includes("boards.4chan.org")) colorDiff = 28;

function addTessellationThread() {
  let newSpan = document.createElement("span");
  newSpan.innerText = "[Tessellate Thread]";
  newSpan.classList.add("tessellateThread");
  newSpan.classList.add("collapsible");
  newSpan.style.paddingLeft = "6px";
  newSpan.style.paddingRight = "1px";
  newSpan.style.fontSize = "11px";
  newSpan.style.color = "rgb(46, 54, 144)";
  newSpan.style.opacity = "1";
  document.querySelector(".opContainer").querySelector(".postInfo.desktop").insertBefore(newSpan, document.querySelector(".opContainer").querySelector(".postMenuBtn"));
  newSpan.addEventListener("click", tessellateThread);
}

function tessellateThreadAlgorithmic(e) {
  let node = e.target;
  let threadNode = document.querySelector(".thread");
  let posts =  Array.from(document.querySelectorAll(".post.reply"));
  if (e.target.style.opacity === "1") {
    //threadNode.style.maxWidth = "100%";
    //threadNode.style.display = "flex";
    //threadNode.style.flexWrap = "wrap";
    node.style.opacity = "0.55";
    Array.from(document.querySelectorAll(".sideArrows")).forEach(el => {el.style.opacity = "0"; el.style.zIndex = "-1";});
    posts.forEach(el => {el.style.position = "relative"; el.style.bottom = "0px"; el.style.top = "0px"; el.style.left = "0px"; el.style.right = "0px";});
    let topBound = Math.floor(document.querySelector(".postContainer.opContainer").getBoundingClientRect().bottom + window.scrollY);
    let leftBound = 24;
    //console.log("before top-level iteration", topBound, leftBound);
    posts.forEach((post, postIdx) => {
      if (postIdx === 0) return;
      //post.style.left = document.documentElement.clientWidth - post.getBoundingClientRect().right;
      let beginningTop = post.getBoundingClientRect().top + window.scrollY;
      let currentBottomDiff =  0;
      let currentRightDiff =  0;
      let currentLeftDiff =  0;
      let currentTopDiff =  0;
      let currentLeftBound = document.documentElement.clientWidth - post.getBoundingClientRect().right;
      //console.log("before first while loop", beginningTop, currentLeftBound);
      //console.log("collection before while loop", posts, posts.slice(0, postIdx));
      while(!intersectionCheck(post.getBoundingClientRect().top + window.scrollY - currentBottomDiff, currentLeftBound, posts.slice(0, postIdx), topBound, leftBound, post)) {
        currentBottomDiff += 2;
        //post.style.bottom = `${Number(post.style.bottom.match(/(\d+)px/)[1]) + 2}px`;
      }
      post.style.bottom = `${Number(post.style.bottom.match(/(\d+)px/)[1]) + currentBottomDiff}px`;
      let currentTopBound = beginningTop + window.scrollY - currentBottomDiff;
      while(!intersectionCheck(currentTopBound, currentLeftBound - currentRightDiff, posts.slice(0, postIdx), topBound, leftBound, post)) {
        //post.style.right = `${Number(post.style.right.match(/(\d+)px/)[1]) + 2}px`;
        currentRightDiff += 2;
      }
      post.style.left = `${Number(post.style.left.match(/(\d+)px/)[1]) - currentRightDiff + currentLeftBound}px`;
    });
  } else {
    //undo
    node.style.opacity = "1";
    threadNode.style.maxWidth = "";
    Array.from(document.querySelectorAll(".sideArrows")).forEach(el => {el.style.opacity = "1"; el.style.zIndex = "0";});
    posts.forEach(el => {el.style.position = "unset"; el.style.bottom = "0px"; el.style.top = "0px"; el.style.left = "0px"; el.style.right = "0px";});
  }
}

function intersectionCheck(currentTop, currentLeft, collection, topBound, leftBound, post) {
  //console.log("entering intersectionCheck, collection", collection);
  for (let el of collection) {
    //console.log("comparing", post, el, currentTop, currentLeft, topBound, leftBound);
    if (currentTop < el.getBoundingClientRect().bottom + window.scrollY && currentLeft < el.getBoundingClientRect().right ||
        currentTop < topBound || currentLeft < leftBound) return true;
  }
  return false;
}

function tessellateThread(e) {
  let node = e.target;
  let threadNode = document.querySelector(".thread");
  if (threadNode.style.display !== "flex") {
    threadNode.style.display = "flex";
    threadNode.style.flexWrap = "wrap";
    threadNode.style.maxWidth = "100%";
    node.style.opacity = "0.55";
  } else {
    threadNode.style.display = "";
    threadNode.style.flexWrap = "";
    threadNode.style.maxWidth = "";
    node.style.opacity = "1.0";
  }
}

function addThreadWidthToggle() {
  let newSpan = document.createElement("span");
  newSpan.innerText = "[Toggle Thread Width]";
  newSpan.classList.add("threadWidthToggle");
  newSpan.classList.add("collapsible");
  newSpan.style.paddingLeft = "6px";
  newSpan.style.paddingRight = "1px";
  newSpan.style.fontSize = "11px";
  newSpan.style.color = "rgb(46, 54, 144)";
  newSpan.title = "Toggle thread width to and from 100% viewport width (without tessellating)";
  document.querySelector(".opContainer").querySelector(".postInfo.desktop").insertBefore(newSpan, document.querySelector(".opContainer").querySelector(".postMenuBtn"));
  newSpan.addEventListener("click", toggleThreadWidth);
}

function toggleThreadWidth(e) {
  let node = e.target;
  if (Number(node.style.opacity) > 0.95 || !node.style.opacity) {
    document.querySelector(".thread").style.maxWidth = "100%";
    node.style.opacity = "0.55";
  } else {
    document.querySelector(".thread").style.maxWidth = "";
    node.style.opacity = "1.0";
  }
}

function addTessellationQuotes() {
  Array.from(document.getElementsByClassName("postInfo")).forEach(el => {
    if (el.getElementsByClassName("tessellateQuotes").length === 0) {
      let btn = el.querySelector(".postMenuBtn");
      let tesSpan = document.createElement("span");
      tesSpan.innerText = "[Tessellate]";
      tesSpan.classList.add("tessellateQuotes");
      tesSpan.classList.add("collapsible");
      tesSpan.style.paddingLeft = "6px";
      tesSpan.style.paddingRight = "1px";
      tesSpan.style.fontSize = "11px";
      tesSpan.style.color = "rgb(46, 54, 144)";
      el.insertBefore(tesSpan, btn);
      tesSpan.removeEventListener("click", tessellateQuotes);
      tesSpan.addEventListener("click", tessellateQuotes);
    }
  });
}

function tessellateQuotes(e) {
  let tesSpan = e.target;
  let quotesNode = e.target.parentNode.parentNode.querySelector(".quotedPostsContainer");
  if (quotesNode.style.display !== "flex") {
    quotesNode.style.display = "flex";
    quotesNode.style.flexWrap = "wrap";
    tesSpan.style.opacity = "0.55";
  } else {
    quotesNode.style.display = "";
    quotesNode.style.flexWrap = "";
    tesSpan.style.color = "rgb(46, 54, 144)";
    tesSpan.style.opacity = "1.0";
  }
}

function addQuotedPostsContainer() {
  Array.from(document.getElementsByClassName("postMessage")).forEach(el => {
    if (el.getElementsByClassName("quotedPostsContainer").length === 0) {
      let container = document.createElement("span");
      container.classList.add("quotedPostsContainer");
      el.appendChild(container);
    }
  });
}

function addCollapseAndExpand() {
  Array.from(document.querySelectorAll(".post.reply")).forEach(postNode => {
    if (Array.from(postNode.children[1].children).filter(node => node.classList.contains("expandSpan")).length === 0) {
      let expandSpan = document.createElement("span");
      expandSpan.classList.add("expandSpan");
      expandSpan.classList.add("collapsible");
      expandSpan.innerText = "[↓]";
      expandSpan.title = "expand all 'quoted by' posts";
      expandSpan.style.color = "#1019d2e6";
      expandSpan.style.fontSize = "11px";
      expandSpan.style.paddingLeft = "5px";
      expandSpan.style.paddingRight = "5px";
      expandSpan.style.whiteSpace = "nowrap";
      let collapseSpan = document.createElement("span");
      collapseSpan.classList.add("collapseSpan");
      collapseSpan.classList.add("collapsible");
      collapseSpan.style.color = "#1019d2e6";
      collapseSpan.innerText = "[↑]";
      collapseSpan.title = "collapse all 'quoted by' posts";
      collapseSpan.style.fontSize = "11px";
      collapseSpan.style.paddingRight = "0px";
      collapseSpan.style.whiteSpace = "nowrap";
      postNode.children[1].insertBefore(expandSpan, postNode.querySelector(".postMenuBtn"));
      postNode.children[1].insertBefore(collapseSpan, postNode.querySelector(".postMenuBtn"));
    }
    let expand = postNode.querySelector(".expandSpan");
    let collapse = postNode.querySelector(".collapseSpan");
    expand.removeEventListener("click", expandSpanEL);
    expand.addEventListener("click", expandSpanEL);
    collapse.removeEventListener("click", collapseSpanEL);
    collapse.addEventListener("click", collapseSpanEL);
  });
}

function expandSpanEL(e) {
  Array.from(Array.from(e.target.parentNode.children).filter(node => node.classList.contains("backlink"))[0].children).forEach(node => {if (!node.children[0].classList.contains("linkfade")) node.children[0].click();});
}

function collapseSpanEL(e) {
  Array.from(Array.from(e.target.parentNode.children).filter(node => node.classList.contains("backlink"))[0].children).forEach(node => {if (node.children[0].classList.contains("linkfade")) node.children[0].click();});
}

function qSpanClick(e) {
  e.preventDefault();
}

function addMediaZoom() {
  Array.from(document.querySelectorAll(".fileText")).forEach(el => {
    if (Array.from(el.children).filter(el => el.classList.contains("mediaSizeChange")).length === 0) {
      let span = document.createElement("span");
      span.classList.add("mediaSizeChange");
      span.classList.add("collapsible");
      let spanBigger = document.createElement("span");
      let spanSmaller = document.createElement("span");
      let spanBiggerMore = document.createElement("span");
      let spanSmallerMore = document.createElement("span");
      let spanReset = document.createElement("span");
      spanBigger.classList.add("mediaSizeIncrease");
      spanSmaller.classList.add("mediaSizeDecrease");
      spanBiggerMore.classList.add("mediaSizeIncreaseMore");
      spanSmallerMore.classList.add("mediaSizeDecreaseMore");
      spanReset.classList.add("mediaSizeReset");
      spanBigger.innerText = "(++)";
      spanSmaller.innerText = "(--)";
      spanBiggerMore.innerHTML = `(<span style="font-size: 16px; position: relative; top: 1.5px;">++</span>)`;
      spanSmallerMore.innerHTML = `(<span style="font-size: 18px; position: relative; top: 2px;">--</span>)`;
      spanReset.innerText = "(Reset)";
      spanBigger.style.color = "#1019d2e6";
      spanBiggerMore.style.color = "#1019d2e6";
      spanSmaller.style.color = "#1019d2e6";
      spanSmallerMore.style.color = "#1019d2e6";
      spanReset.style.color = "#1019d2e6";
      spanReset.style.fontSize = "10px";
      span.innerHTML = `[ Size - ${spanSmaller.outerHTML} ${spanSmallerMore.outerHTML} | ${spanBigger.outerHTML} ${spanBiggerMore.outerHTML} | ${spanReset.outerHTML} ]`;
      el.appendChild(span);
      span.style.fontSize = "12px";
      span.style.position = "relative";
      span.style.bottom = "1px";
      span.style.paddingRight = "4px";
      span.style.paddingLeft = "4px";
      spanReset.style.position = "relative";
      spanReset.style.bottom = "1px";
    }
    let spanBigger = el.getElementsByClassName("mediaSizeIncrease")[0];
    spanBigger.removeEventListener("click", mediaSizeIncrease);
    let spanSmaller = el.getElementsByClassName("mediaSizeDecrease")[0];
    spanSmaller.removeEventListener("click", mediaSizeDecrease);
    let spanBiggerMore = el.getElementsByClassName("mediaSizeIncreaseMore")[0];
    spanBiggerMore.removeEventListener("click", mediaSizeIncreaseMore);
    let spanSmallerMore = el.getElementsByClassName("mediaSizeDecreaseMore")[0];
    spanSmallerMore.removeEventListener("click", mediaSizeDecreaseMore);
    let spanReset = el.getElementsByClassName("mediaSizeReset")[0];
    spanReset.removeEventListener("click", mediaSizeReset);
    spanBigger.addEventListener("click", mediaSizeIncrease);
    spanSmaller.addEventListener("click", mediaSizeDecrease);
    spanBiggerMore.addEventListener("click", mediaSizeIncreaseMore);
    spanSmallerMore.addEventListener("click", mediaSizeDecreaseMore);
    spanReset.addEventListener("click", mediaSizeReset);
  });
}

function mediaSizeIncrease(e) {
  let min = 0;
  let max = Number(e.target.parentNode.parentNode.parentNode.innerText.match(/\d+x\d+/)[0].split("x")[0]);
  let fileDiv = e.target.parentNode.parentNode.parentNode;
  if (Array.from(fileDiv.children).filter(el => el.tagName === "VIDEO").length !== 0) {
    let vidEl = Array.from(fileDiv.children).filter(el => el.tagName === "VIDEO")[0];
    if (vidEl.style.maxWidth) {
      vidEl.style.width = vidEl.style.maxWidth;
      vidEl.style.maxWidth = "";
      vidEl.style.maxHeight = "";
    }
    vidEl.style.height = "";
    let currentWidth = Number(vidEl.style.width.match(/\d+/));
    currentWidth += 20;
    vidEl.style.width = `${currentWidth}px`;
  } else {
    if (fileDiv.classList.contains("image-expanded")) {
      let img = Array.from(fileDiv.querySelectorAll("img")).filter(el => el.classList.contains("expanded-thumb"))[0];
      if (img) {
        if (img.style.maxWidth) {
          img.style.width = img.style.maxWidth;
          img.style.maxWidth = "";
          img.style.maxHeight = "";
        }
        img.style.height = "";
        let currentWidth = Number(img.style.width.match(/\d+/));
        currentWidth += 20;
        img.style.width = `${currentWidth}px`;
      }
    }
  }
}

function mediaSizeDecrease(e) {
  let min = 0;
  let max = Number(e.target.parentNode.parentNode.innerText.match(/\d+x\d+/)[0].split("x")[0]);
  let fileDiv = e.target.parentNode.parentNode.parentNode;
  if (Array.from(fileDiv.children).filter(el => el.tagName === "VIDEO").length !== 0) {
    let vidEl = Array.from(fileDiv.children).filter(el => el.tagName === "VIDEO")[0];
    if (vidEl.style.maxWidth) {
      vidEl.style.width = vidEl.style.maxWidth;
      vidEl.style.maxWidth = "";
      vidEl.style.maxHeight = "";
    }
    vidEl.style.height = "";
    let currentWidth = Number(vidEl.style.width.match(/\d+/));
    currentWidth -= 20;
    if (currentWidth < 0) {
      vidEl.style.width = `0px`;
      currentWidth = 0;
    } else {
      vidEl.style.width = `${currentWidth}px`;
    }
  } else {
    if (fileDiv.classList.contains("image-expanded")) {
      let img = Array.from(fileDiv.querySelectorAll("img")).filter(el => el.classList.contains("expanded-thumb"))[0];
      if (img) {
        if (img.style.maxWidth) {
          img.style.width = img.style.maxWidth;
          img.style.maxWidth = "";
          img.style.maxHeight = "";
        }
        img.style.height = "";
        let currentWidth = Number(img.style.width.match(/\d+/));
        currentWidth -= 20;
        if (currentWidth < 0) {
          img.style.width = `${max}px}`;
        } else {
          img.style.width = `${currentWidth}px`;
        }
      }
    }
  }
}

function mediaSizeIncreaseMore(e) {
  let min = 0;
  let max = Number(e.target.parentNode.parentNode.parentNode.innerText.match(/\d+x\d+/)[0].split("x")[0]);
  let fileDiv = e.target.parentNode.parentNode.parentNode.parentNode;
  if (Array.from(fileDiv.children).filter(el => el.tagName === "VIDEO").length !== 0) {
    let vidEl = Array.from(fileDiv.children).filter(el => el.tagName === "VIDEO")[0];
    if (vidEl.style.maxWidth) {
      vidEl.style.width = vidEl.style.maxWidth;
      vidEl.style.maxWidth = "";
      vidEl.style.maxHeight = "";
    }
    vidEl.style.height = "";
    let currentWidth = Number(vidEl.style.width.match(/\d+/));
    currentWidth += 100;
    vidEl.style.width = `${currentWidth}px`;
  } else {
    if (fileDiv.classList.contains("image-expanded")) {
      let img = Array.from(fileDiv.querySelectorAll("img")).filter(el => el.classList.contains("expanded-thumb"))[0];
      if (img) {
        if (img.style.maxWidth) {
          img.style.width = img.style.maxWidth;
          img.style.maxWidth = "";
          img.style.maxHeight = "";
        }
        img.style.height = "";
        let currentWidth = Number(img.style.width.match(/\d+/));
        currentWidth += 100;
        img.style.width = `${currentWidth}px`;
      }
    }
  }
}

function mediaSizeDecreaseMore(e) {
  let min = 0;
  let max = Number(e.target.parentNode.parentNode.parentNode.innerText.match(/\d+x\d+/)[0].split("x")[0]);
  let fileDiv = e.target.parentNode.parentNode.parentNode.parentNode;
  if (Array.from(fileDiv.children).filter(el => el.tagName === "VIDEO").length !== 0) {
    let vidEl = Array.from(fileDiv.children).filter(el => el.tagName === "VIDEO")[0];
    if (vidEl.style.maxWidth) {
      vidEl.style.width = vidEl.style.maxWidth;
      vidEl.style.maxWidth = "";
      vidEl.style.maxHeight = "";
    }
    vidEl.style.height = "";
    let currentWidth = Number(vidEl.style.width.match(/\d+/));
    currentWidth -= 100;
    if (currentWidth < 0) {
      vidEl.style.width = `0px`;
      currentWidth = 0;
    } else {
      vidEl.style.width = `${currentWidth}px`;
    }
  } else {
    if (fileDiv.classList.contains("image-expanded")) {
      let img = Array.from(fileDiv.querySelectorAll("img")).filter(el => el.classList.contains("expanded-thumb"))[0];
      if (img) {
        if (img.style.maxWidth) {
          img.style.width = img.style.maxWidth;
          img.style.maxWidth = "";
          img.style.maxHeight = "";
        }
        img.style.height = "";
        let currentWidth = Number(img.style.width.match(/\d+/));
        currentWidth -= 100;
        if (currentWidth < 0) {
          img.style.width = `${max}px}`;
        } else {
          img.style.width = `${currentWidth}px`;
        }
      }
    }
  }
}

function mediaSizeReset(e) {
  let width = Number(e.target.parentNode.parentNode.innerText.match(/\d+x\d+/)[0].split("x")[0]);
  let height = Number(e.target.parentNode.parentNode.innerText.match(/\d+x\d+/)[0].split("x")[1]);
  let fileDiv = e.target.parentNode.parentNode.parentNode;
  if (Array.from(fileDiv.children).filter(el => el.tagName === "VIDEO").length !== 0) {
    let vidEl = Array.from(fileDiv.children).filter(el => el.tagName === "VIDEO")[0];
    vidEl.style.width = `${width}px`;
    vidEl.style.height = `${height}px`;
  } else {
     if (fileDiv.classList.contains("image-expanded")) {
      let img = Array.from(fileDiv.querySelectorAll("img")).filter(el => el.classList.contains("expanded-thumb"))[0];
      if (img) {
        img.style.width = `${width}px`;
        img.style.height = `${height}px`;
      }
    }
  }
}

function addMediaFlow() {
  Array.from(document.querySelectorAll(".fileText")).forEach(el => {
    if (Array.from(el.children).filter(el => el.classList.contains("mediaFlowChange")).length === 0) {
      let span = document.createElement("span");
      span.classList.add("mediaFlowChange");
      span.classList.add("collapsible");
      span.innerText = "[Text flow]";
      el.appendChild(span);
      span.style.fontSize = "10px";
      span.style.color = "#1019d2e6";
      span.style.position = "relative";
      span.style.bottom = "1px";
      span.style.paddingRight = "4px";
      span.style.opacity = "1";
    }
    let spanFlow = el.getElementsByClassName("mediaFlowChange")[0];
    spanFlow.removeEventListener("click", mediaFlowChange);
    spanFlow.addEventListener("click", mediaFlowChange);
  });
}

function mediaFlowChange(e) {
  let flowSpan = e.target;
  let flowSpanOpacity = flowSpan.style.opacity;
  let fileTextSpan = flowSpan.parentNode.parentNode;
  console.log("in MediaFlowChange", flowSpan, fileTextSpan, flowSpanOpacity, typeof flowSpanOpacity, fileTextSpan.classList.contains("image-expanded"), fileTextSpan.style.display);
  if (fileTextSpan.classList.contains("image-expanded")) {
    if (flowSpanOpacity === "1") {
      e.target.style.opacity = "0.55";
      //fileTextSpan.style.display = "table";
      fileTextSpan.classList.add("regularTextFlow");
    } else {
      e.target.style.opacity = "1";
      //fileTextSpan.style.display = "unset";
      fileTextSpan.classList.remove("regularTextFlow");
    }
  }
}

function addYTSizeChangeCapability() {
  //change yt size
}

function addRemoveCapability() {
  //turns all delete checkboxes to simply post removal buttons
  Array.from(document.getElementsByClassName("postInfo desktop")).forEach(el => el.children[0].addEventListener("click", postRemove));
}

function postRemove(e) {
  e.preventDefault();
  e.target.parentNode.parentNode.parentNode.remove();
}

function setPostColor() {
  if (!postColor) {
    if (document.querySelectorAll(".post.reply").length > 0) {
      let post = document.querySelector(".post.reply");
      let rgbStr = window.getComputedStyle(post).backgroundColor;
      let matches = rgbStr.match(/rgb\((\d+),\s?(\d+),\s?(\d+)\)/i);
      postColor = {r: Number(matches[1]), g: Number(matches[2]), b: Number(matches[3])};
    }
  }
}

function addColorPostsThread() {
  let btn = document.querySelector(".op").querySelector(".postMenuBtn");
  let span = document.createElement("span");
  span.classList.add("colorChange");
  span.classList.add("collapsible");
  span.title = "Color all posts in thread";
  let colorOn = document.createElement("span");
  let colorOff = document.createElement("span");
  colorOn.classList.add("colorOnThread");
  colorOff.classList.add("colorOffThread");
  colorOn.innerText = "Color Posts";
  colorOff.innerText = "Off";
  span.innerHTML = `[${colorOn.outerHTML} | ${colorOff.outerHTML}]`;
  btn.parentNode.insertBefore(span, btn);
  span.style.paddingLeft = "6px";
  span.style.paddingRight = "1px";
  span.style.fontSize = "11px";
  span.style.color = "rgb(46, 53, 144)";
  document.querySelector(".colorOnThread").addEventListener("click", colorPostsThreadOn);
  document.querySelector(".colorOffThread").addEventListener("click", colorPostsThreadOff);
}

function colorPostsThreadOn(e) {
  Array.from(document.querySelectorAll(".post.reply")).forEach(el => {
    el.style.backgroundColor = `rgb(${Math.random() > 0.8 ? postColor.r - (Math.random() * (colorDiff / 5)) : postColor.r + (Math.random() * (colorDiff * 1.45))},
    ${Math.random() > 0.8 ? postColor.g - (Math.random() * (colorDiff / 5)) : postColor.g + (Math.random() * (colorDiff * 1.45))},
    ${Math.random() > 0.8 ? postColor.b - (Math.random() * (colorDiff / 5)) : postColor.b + (Math.random() * (colorDiff * 1.45))})`;
  });
}

function colorPostsThreadOff(e) {
  Array.from(document.querySelectorAll(".post.reply")).forEach(el => {
    el.style.backgroundColor = `rgb(${postColor.r}, ${postColor.g}, ${postColor.b})`;
  });
}

function addCollapseExtraNodesToggle() {
  let btn = document.querySelector(".op").querySelector(".postMenuBtn");
  let span = document.createElement("span");
  span.classList.add("collapseExtraNodes");
  span.classList.add("collapsible");
  span.title = "Collapse all extra nodes in thread";
  span.innerText = "[Collapse extras]";
  btn.parentNode.insertBefore(span, btn);
  span.style.paddingLeft = "6px";
  span.style.paddingRight = "1px";
  span.style.fontSize = "11px";
  span.style.color = "rgb(46, 53, 144)";
  span.style.opacity = "1";
  span.addEventListener("click", collapseNodesToggle);
}

let threadNodesCollapsed = false;

function collapseNodesToggle(e) {
  if (!threadNodesCollapsed) {
    Array.from(document.querySelectorAll(".collapsible")).forEach(el => el.style.display = "none");
    threadNodesCollapsed = true;
    //e.target.style.opacity = "0.55";
  } else {
    Array.from(document.querySelectorAll(".collapsible")).forEach(el => el.style.display = "unset");
    threadNodesCollapsed = false;
    //e.target.style.opacity = "1";
  }
}

function addCollapseExtrasInPosts() {
  Array.from(document.querySelectorAll(".postInfo.desktop")).forEach((el, i) => {
    if (i === 0) return;
    if (Array.from(el.children).filter(child => child.classList.contains("collapseExtraNodes")).length === 0) {
      el.parentNode.dataset.originalColor = window.getComputedStyle(el).backgroundColor;
      let span = document.createElement("span");
      span.classList.add("collapseExtraNodes");
      span.classList.add("collapsible");
      span.title = "Collapse all extra nodes of inlined posts within this one, including this - reverse with arrow button";
      span.innerHTML = `[Collapse extras]`;
      el.insertBefore(span, el.querySelector(".postMenuBtn"));
      span.style.paddingLeft = "6px";
      span.style.paddingRight = "1px";
      span.style.fontSize = "11px";
      span.style.color = "rgb(46, 53, 144)";
    }
    let collapseSpan = el.querySelector(".collapseExtraNodes");
    collapseSpan.removeEventListener("click", collapsePostsPostOn);
    collapseSpan.addEventListener("click", collapsePostsPostOn);
  });
}

function collapsePostsPostOn(e) {
  Array.from(e.target.parentNode.parentNode.parentNode.querySelectorAll(".post.reply")).forEach(el => {
    Array.from(el.querySelectorAll(".collapsible")).forEach(collapsibleEl => collapsibleEl.style.display = "none");
  });
}

function addExpandExtrasInPosts() {
  Array.from(document.querySelectorAll(".postInfo.desktop")).forEach((el, i) => {
    if (i === 0) {
      let buttonMenuSpan = el.querySelector(".postMenuBtn");
      buttonMenuSpan.removeEventListener("click", expandPostsThreadOn);
      buttonMenuSpan.addEventListener("click", expandPostsThreadOn);
      return;
    };
    let buttonMenuSpan = el.querySelector(".postMenuBtn");
    buttonMenuSpan.removeEventListener("click", expandPostsPostOn);
    buttonMenuSpan.addEventListener("click", expandPostsPostOn);
  });
}

function expandPostsPostOn(e) {
  Array.from(e.target.parentNode.parentNode.parentNode.querySelectorAll(".post.reply")).forEach(el => {
    Array.from(el.querySelectorAll(".collapsible")).forEach(collapsibleEl => collapsibleEl.style.display = "unset");
  });
}

function expandPostsThreadOn(e) {
  Array.from(document.querySelectorAll(".postInfo.desktop")).forEach(el => {
    Array.from(el.querySelectorAll(".collapsible")).forEach(collapsibleEl => collapsibleEl.style.display = "unset");
  });
}

function addColorPosts() {
  Array.from(document.querySelectorAll(".postInfo.desktop")).forEach((el, i) => {
    if (i === 0) return;
    if (Array.from(el.children).filter(child => child.classList.contains("colorChange")).length === 0) {
      el.parentNode.dataset.originalColor = window.getComputedStyle(el).backgroundColor;
      let span = document.createElement("span");
      span.classList.add("colorChange");
      span.classList.add("collapsible");
      span.title = "Color all inlined posts within this one";
      let colorOn = document.createElement("span");
      let colorOff = document.createElement("span");
      colorOn.classList.add("colorOnPost");
      colorOff.classList.add("colorOffPost");
      colorOn.innerText = "Color Posts";
      colorOff.innerText = "Off";
      span.innerHTML = `[${colorOn.outerHTML} | ${colorOff.outerHTML}]`;
      el.insertBefore(span, el.querySelector(".postMenuBtn"));
      span.style.paddingLeft = "6px";
      span.style.paddingRight = "1px";
      span.style.fontSize = "11px";
      span.style.color = "rgb(46, 53, 144)";
    }
    let colorOn = el.querySelector(".colorOnPost");
    let colorOff = el.querySelector(".colorOffPost");
    colorOn.removeEventListener("click", colorPostsPostOn);
    colorOn.addEventListener("click", colorPostsPostOn);
    colorOff.removeEventListener("click", colorPostsPostOff);
    colorOff.addEventListener("click", colorPostsPostOff);
  });
}

function colorPostsPostOn(e) {
  //console.log("colorPostsPoston", e.target);
  Array.from(e.target.parentNode.parentNode.parentNode.querySelectorAll(".post.reply")).forEach(el => {
    let nums = getTwoToThreeHigherNums();
    let randomDiff = getAtLeastOneQuarterFromRandom();
    let mappedNums = nums.map((num, idx) => num > 0.5 ? getSpecificColorFromMappedNumIdx(idx) + (randomDiff * colorDiff) : getSpecificColorFromMappedNumIdx(idx) - (randomDiff * colorDiff));
    el.style.backgroundColor = `rgb(${mappedNums[0]}, ${mappedNums[1]}, ${mappedNums[2]})`;
  });
}

function colorPostsPostOff(e) {
  Array.from(e.target.parentNode.parentNode.parentNode.querySelectorAll(".post.reply")).forEach(el => {
    el.style.backgroundColor = `rgb(${postColor.r}, ${postColor.g}, ${postColor.b})`;
  });
}

function getTwoToThreeHigherNums() {
    while(true) {
        let arr = [Math.random(), Math.random(), Math.random()];
        let numbersAboveHalf = arr.filter(el => el > 0.5).length;
        if (numbersAboveHalf > 1 && numbersAboveHalf < 4) {
            if (numbersAboveHalf === 3) {
                if (arr.filter(el => el > 0.85).length > 2) return arr;
            } else return arr;
        }
    }
}

function getAtLeastOneQuarterFromRandom() {
  while(true) {
    let num = Math.random();
    if (num > 0.25) return num;
  }
}

function getSpecificColorFromMappedNumIdx(idx) {
   // if (idx === 0) return 215;
   // if (idx === 1) return 215;
   // else return 215;
  if (idx === 0) return postColor.r;
  if (idx === 1) return postColor.g;
  else return postColor.b;
}

function addPostsDraggableToggleThread() {
  let btn = document.querySelector(".op").querySelector(".postMenuBtn");
  let metaSpan = document.createElement("span");
  metaSpan.classList.add("postsDraggableContainer");
  metaSpan.classList.add("collapsible");
  let spanDrag = document.createElement("span");
  let spanDragReset = document.createElement("span");
  spanDragReset.classList.add("postsDraggableReset");
  spanDrag.classList.add("postsDraggableToggle");
  spanDrag.title = "Toggle for whether posts are draggable/movable";
  spanDrag.innerText = "Posts Draggable";
  spanDragReset.title = "Reset positions of all posts";
  spanDragReset.innerText = "Reset";
  metaSpan.innerHTML = `[${spanDrag.outerHTML} | ${spanDragReset.outerHTML}]`;
  btn.parentNode.insertBefore(metaSpan, btn);
  metaSpan.style.paddingLeft = "6px";
  metaSpan.style.paddingRight = "1px";
  metaSpan.style.fontSize = "11px";
  metaSpan.style.color = "rgb(46, 53, 144)";
  spanDrag = document.querySelector(".postsDraggableToggle");
  spanDrag.style.opacity = "1";
  spanDragReset = document.querySelector(".postsDraggableReset");
  spanDrag.addEventListener("click", postsDraggableToggle);
  spanDragReset.addEventListener("click", postsDraggableReset);
}

function postsDraggableReset() {
  let posts = Array.from(document.querySelectorAll(".post.reply"));
  posts.forEach(post => {
    //post.style.position = "unset";
    post.style.top = "";
    post.style.bottom = "";
    post.style.left = "";
    post.style.right = "";
  });
}

let currentStartDragHorizontal = null;
let currentStartDragVertical = null;
let currentStartDragHorizontalDiff = null;
let currentStartDragVerticalDiff = null;
let currentStartDragNode = null;
let currentDragZIndex = 1;

function postsDraggableToggle(e) {
  if (e.target.style.opacity === "1") {
    e.target.style.opacity = "0.55";
    document.addEventListener("dragover", documentDragOver, true);
    document.addEventListener("drop", documentDrop, true);
    let posts = Array.from(document.querySelectorAll(".post.reply"));
    posts.forEach(post => {
      if (post.draggable !== true) {
        post.draggable = true;
        post.addEventListener("dragstart", postDragStart, true);
      }
    });
  } else {
    e.target.style.opacity = "1";
    document.removeEventListener("dragover", documentDragOver);
    document.removeEventListener("drop", documentDrop);
    let posts = Array.from(document.querySelectorAll(".post.reply"));
    posts.forEach(post => {
      if (post.draggable !== false) {
        post.draggable = false;
        post.removeEventListener("dragstart", postDragStart);
      }
    });
  }
}

function addPostDraggableTogglePost() {
  Array.from(document.querySelectorAll(".postInfo.desktop")).forEach((el, i) => {
    if (i === 0) return;
    if (Array.from(el.children).filter(child => child.classList.contains("postsDraggableContainer")).length === 0) {
      el.parentNode.dataset.originalColor = window.getComputedStyle(el).backgroundColor;
      let metaSpan = document.createElement("span");
      metaSpan.classList.add("postsDraggableContainer");
      metaSpan.classList.add("collapsible");
      let spanDrag = document.createElement("span");
      let spanDragReset = document.createElement("span");
      spanDragReset.classList.add("postsDraggableResetPost");
      spanDrag.classList.add("postsDraggableTogglePost");
      spanDrag.title = "Toggle for whether inlined posts are draggable/movable";
      spanDrag.innerText = "Posts Draggable";
      spanDragReset.title = "Reset positions of all inlined posts";
      spanDragReset.innerText = "Reset";
      metaSpan.innerHTML = `[${spanDrag.outerHTML} | ${spanDragReset.outerHTML}]`;
      el.insertBefore(metaSpan, el.querySelector(".postMenuBtn"));
      metaSpan.style.paddingLeft = "6px";
      metaSpan.style.paddingRight = "1px";
      metaSpan.style.fontSize = "11px";
      metaSpan.style.color = "rgb(46, 53, 144)";
    }
    let spanDrag = el.querySelector(".postsDraggableTogglePost");
    spanDrag.style.opacity = "1";
    let spanDragReset = el.querySelector(".postsDraggableResetPost");
    spanDrag.removeEventListener("click", postsDraggableTogglePost);
    spanDragReset.removeEventListener("click", postsDraggableResetPost);
    spanDrag.addEventListener("click", postsDraggableTogglePost);
    spanDragReset.addEventListener("click", postsDraggableResetPost);
  });
}

function postsDraggableResetPost(e) {
  let posts = Array.from(e.target.parentNode.parentNode.parentNode.querySelectorAll(".post.reply"));
  posts.forEach(post => {
    //post.style.position = "unset";
    post.style.top = "";
    post.style.bottom = "";
    post.style.left = "";
    post.style.right = "";
  });
}

function postsDraggableTogglePost(e) {
  if (e.target.style.opacity === "1") {
    e.target.style.opacity = "0.55";
    document.addEventListener("dragover", documentDragOver, true);
    document.addEventListener("drop", documentDrop, true);
    let posts = Array.from(e.target.parentNode.parentNode.parentNode.querySelectorAll(".post.reply"));
    posts.forEach(post => {
      if (post.draggable !== true) {
        post.draggable = true;
        post.addEventListener("dragstart", postDragStart, true);
      }
    });
  } else {
    e.target.style.opacity = "1";
    document.removeEventListener("dragover", documentDragOver);
    document.removeEventListener("drop", documentDrop);
    let posts = Array.from(e.target.parentNode.parentNode.parentNode.querySelectorAll(".post.reply"));
    posts.forEach(post => {
      if (post.draggable !== false) {
        post.draggable = false;
        post.removeEventListener("dragstart", postDragStart);
      }
    });
  }
}

function postDragStart(e) {
  e.dataTransfer.setData("text", e.target.outerHTML);
  //currentStartDragHorizontalDiff = Math.floor(e.clientX - e.target.getBoundingClientRect().left);
  //currentStartDragVerticalDiff = Math.floor(e.clientY - e.target.getBoundingClientRect().top);
  currentStartDragHorizontal = e.clientX;
  currentStartDragVertical = e.clientY + window.scrollY;
  currentStartDragNode = e.target;
  //e.target.style.position = "absolute";
  if (e.target.style.top === "") e.target.style.top = "0px";
  if (e.target.style.left === "") e.target.style.left = "0px";
  e.target.style.zIndex = JSON.stringify(currentDragZIndex);
  currentDragZIndex++;
}

function documentDragOver(e) {
  e.preventDefault();
}

function documentDrop(e) {
  e.preventDefault();
  currentStartDragNode.style.left = `${Number(currentStartDragNode.style.left.match(/([-\.\d]+)px/)[1]) + e.clientX - currentStartDragHorizontal}px`;
  currentStartDragNode.style.top = `${Number(currentStartDragNode.style.top.match(/([-\.\d]+)px/)[1]) + window.scrollY + e.clientY - currentStartDragVertical}px`;
  //currentStartDragNode.style.left = `${e.clientX - currentStartDragHorizontalDiff}px`;
  //currentStartDragNode.style.top = `${window.scrollY + e.clientY - currentStartDragVerticalDiff}px`;
  //currentStartDragNode.style.position = "absolute";
  if (currentStartDragNode.style.position !== "relative") currentStartDragNode.style.position = "relative";
  currentStartDragHorizontalDiff = null;
  currentStartDragVerticalDiff = null;
  currentStartDragNode = null;
}

function addRemoveYousInPost() {
  Array.from(document.querySelectorAll(".postInfo.desktop")).forEach(el => {
    if (Array.from(el.children).filter(el => el.classList.contains("removeYouPost")).length === 0) {
      let btn = el.querySelector(".postMenuBtn");
      let newSpan = document.createElement("span");
      newSpan.innerText = "[Remove (You)s]";
      newSpan.style.paddingLeft = "6px";
      newSpan.style.paddingRight = "1px";
      newSpan.style.fontSize = "11px";
      newSpan.style.color = "rgb(46, 53, 144)";
      newSpan.classList.add("removeYouPost");
      newSpan.classList.add("collapsible");
      newSpan.title = "Remove all (You)s from current post (works recursively downward)";
      btn.parentNode.insertBefore(newSpan, btn);
    }
  });
  Array.from(document.querySelectorAll(".removeYouPost")).forEach(el => {
    el.removeEventListener("click", removeYouPost);
    el.addEventListener("click", removeYouPost);
  });
}

function removeYouPost(e) {
  let post = e.target.parentNode.parentNode;
  Array.from(post.querySelectorAll("a.quotelink")).forEach(el => {
    el.innerText = el.innerText.replace(" (You)", "");
  });
}

function addEditabilityToPost() {
  Array.from(document.querySelectorAll(".postInfo.desktop")).forEach(el => {
    if (Array.from(el.children).filter(el => el.classList.contains("addEditability")).length === 0) {
      let btn = el.querySelector(".postMenuBtn");
      let newSpan = document.createElement("span");
      newSpan.innerText = "[Editable]";
      newSpan.style.paddingLeft = "6px";
      newSpan.style.paddingRight = "1px";
      newSpan.style.fontSize = "11px";
      newSpan.style.color = "rgb(46, 53, 144)";
      newSpan.classList.add("addEditability");
      newSpan.classList.add("collapsible");
      newSpan.title = "Make post type-editable";
      btn.parentNode.insertBefore(newSpan, btn);
    }
  });
  Array.from(document.querySelectorAll(".addEditability")).forEach(el => {
    el.removeEventListener("click", toggleEditabilityForPost);
    el.addEventListener("click", toggleEditabilityForPost);
  });
}

function toggleEditabilityForPost(e) {
  let flag = "false";
  if ((e.target.style.opacity === "1") || !e.target.style.opacity) {
    e.target.style.opacity = "0.55";
    flag = "true";
  } else {
    e.target.style.opacity = "1";
    flag = "false";
  }
    let post = e.target.parentNode.parentNode;
    let allEmbeddedPosts = Array.from(post.querySelectorAll(".postMessage"));
    allEmbeddedPosts.forEach(post => post.contentEditable = flag);
}

function qEV(e, node=e.target) {
  //console.log("quote clicked.");
  e.preventDefault();

  if (!node.classList.contains("linkfade")) {
    //if not grayed out, first time clicking, adding node
    node.classList.add("linkfade");

    //finding post and constructing new post
    let postsArr = Array.from(document.getElementsByClassName("postNum desktop")).filter(el => el.children[1].innerText === node.innerText.slice(2));
    let post = postsArr[0].parentNode.parentNode.parentNode;
    let newPost = post.cloneNode(true);
    //newPost.outerHTML = post.outerHTML;
    newPost.classList.add("inlined");
    newPost.children[1].classList.remove("highlight");
    newPost.style.display = "";
    newPost.style.marginTop = "10px";
    newPost.children[1].style.border = "1px solid rgba(172, 127, 127, 0.6)";
    newPost.children[1].style.borderRadius = "2px";
    newPost.children[0].style.display = "none";

    //adding to parent post
    if (node.parentNode.parentNode.parentNode.parentNode.children[2].classList.contains("file")) {
        Array.from(node.parentNode.parentNode.parentNode.parentNode.children[3].children).filter(el => el.classList.contains("quotedPostsContainer"))[0].appendChild(newPost);
        if (JSON.parse(localStorage.getItem("4chan-settings")).inlineQuotes) setTimeout(function() {node.parentNode.parentNode.parentNode.parentNode.children[3].children[0].remove();});
    } else {
        Array.from(node.parentNode.parentNode.parentNode.parentNode.children[2].children).filter(el => el.classList.contains("quotedPostsContainer"))[0].appendChild(newPost);
        if (JSON.parse(localStorage.getItem("4chan-settings")).inlineQuotes) setTimeout(function() {node.parentNode.parentNode.parentNode.parentNode.children[2].children[0].remove();});
    }
    setTimeout(function(){newPost.style.display = "";}, 10);

    //resetting event listeners
    resetQLEV();
  } else {
    //grayed out, second time clicking, removing node
    node.classList.remove("linkfade");
    let idx = node.parentNode.parentNode.parentNode.parentNode.children[2].classList.contains("file") ? 3 : 2;
    Array.from(node.parentNode.parentNode.parentNode.parentNode.children[idx].children).forEach(innerNode => {
      if (innerNode.classList.contains("quotedPostsContainer")) {
        Array.from(innerNode.children).forEach(el => {
          if (el.classList.contains("inlined") && node.innerText.slice(2) === el.children[1].children[1].children[3].children[1].innerText) el.remove();
        });
      }
    });
  }
}

function resetQLEV() {
  let newQuotesList = Array.from(document.getElementsByClassName("quotelink")).filter(node => window.getComputedStyle(node).getPropertyValue("font-size") === "10.6667px");
  newQuotesList.forEach(node => node.removeEventListener("click", qEV));
  newQuotesList.forEach(node => node.addEventListener("click", qEV));
  let newSpanList = Array.from(document.getElementsByTagName("span")).filter(el => {
        try {
          if (el.children.length > 0 && el.children[0].classList.contains("quotelink")) return true;
        } catch(error) {
          return false;
        }
    });
  newSpanList.forEach(el => el.removeEventListener("click", qSpanClick));
  newSpanList.forEach(el => el.addEventListener("click", qSpanClick));
  Array.from(document.getElementsByClassName("postInfo desktop")).forEach(el => el.children[0].removeEventListener("click", postRemove));
  addRemoveCapability();
  addCollapseAndExpand();
  let tesQuoteSpans = Array.from(document.getElementsByClassName("tessellateQuotes"));
  tesQuoteSpans.forEach(el => el.removeEventListener("click", tessellateQuotes));
  tesQuoteSpans.forEach(el => el.addEventListener("click", tessellateQuotes));
  addTessellationQuotes();
  addQuotedPostsContainer();
  addMediaZoom();
  addMediaFlow();
  addColorPosts();
  setPostColor();
  addPostDraggableTogglePost();
  addRemoveYousInPost();
  addEditabilityToPost();
  addCollapseExtrasInPosts();
  addExpandExtrasInPosts();
  expandPostsPostOn();
}

let observer = new MutationObserver(resetQLEV);
observer.observe(document.getElementsByClassName("thread")[0], {childList: true});

let quotePreviewObserver = new MutationObserver(quotePreviewHandler);
quotePreviewObserver.observe(document.querySelector("body"), {childList: true});

function quotePreviewHandler(newNodes) {
  if (newNodes[0] && newNodes[0].addedNodes.length > 0) newNodes[0].addedNodes.forEach(el => {if (el.id === "quote-preview") el.style.zIndex = currentDragZIndex++;});
}