// ==UserScript==
// @name         NGA论坛碧蓝幻想表情包
// @namespace    https://gist.github.com/biuuu
// @version      0.0.9
// @description  果てしない空の彼方 煌めく星たちの記憶
// @author       露莉亚
// @match        *://bbs.ngacn.cc/*.php*
// @match        *://ngabbs.com/*.php*
// @match        *://nga.178.com/*.php*
// @match        *://bbs.nga.cn/*.php*
// @grant        none
// @downloadURL https://update.greasyfork.icu/scripts/380479/NGA%E8%AE%BA%E5%9D%9B%E7%A2%A7%E8%93%9D%E5%B9%BB%E6%83%B3%E8%A1%A8%E6%83%85%E5%8C%85.user.js
// @updateURL https://update.greasyfork.icu/scripts/380479/NGA%E8%AE%BA%E5%9D%9B%E7%A2%A7%E8%93%9D%E5%B9%BB%E6%83%B3%E8%A1%A8%E6%83%85%E5%8C%85.meta.js
// ==/UserScript==

(function() {
  'use strict';
  const addStyle = (css) => {
    const style = document.createElement('style')
    style.innerText = css
    document.head.appendChild(style)
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  addStyle(`
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    display: inline-block;
    padding: 0;
  }
  .gbf-sticker img {
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    cursor: pointer;
  }
  .gbf-sticker {
    margin: 0.2em;
    width: 962px;
  }
  .single_ttip2 .block_txt_big {
    padding: 0 0.5em;
    cursor: pointer;
    outline: 0;
    margin-left: -0.2em;
    margin-right: 0.6em;
  }
  .single_ttip2 .block_txt_big:hover {
    filter: brightness(0.95);
  }
  .single_ttip2 .block_txt_big:active {
    filter: brightness(0.9);
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  let boxId = null

  const sleep = function (time) {
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      setTimeout(rev, time)
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  ]
  let recentStickers = []
  try {
    recentStickers = JSON.parse(localStorage.getItem('gbf:sticker'))
    if (!Array.isArray(recentStickers)) {
      recentStickers = []
    }
  } catch (e) {}
  window.saveRecentGBFSticker = (sticker) => {
    if (recentStickers.includes(sticker)) return
    recentStickers.push(sticker)
    recentStickers = recentStickers.slice(-10)
    localStorage.setItem('gbf:sticker', JSON.stringify(recentStickers))
  }
  const insertStickers = async (stickerBox) => {
    let html = ''
    if (recentStickers.length) {
      recentStickers.forEach(sticker => {
        const src = `https://img.nga.178.com/attachments/${sticker.slice(2)}`
        html += `
        <img onclick="window.saveRecentGBFSticker('${sticker}');postfunc.addText('[img]${sticker}[/img]');postfunc.dialog.w._.hide()" src="${src}">
        `
      })
      html = `<div style="margin: 4px 0;
      border-bottom: 1px solid #dcc9b1;">${html}</div>`
    }
    for (let i = 0; i < stickers.length; i++) {
      let sticker = stickers[i]
      const src = `https://img.nga.178.com/attachments/${sticker.slice(2)}`
      html += `
      <img onclick="window.saveRecentGBFSticker('${sticker}');postfunc.addText('[img]${sticker}[/img]');postfunc.dialog.w._.hide()" src="${src}">
      `
      if (i && i % 60 === 0) {
        stickerBox.innerHTML = html
        await sleep(1000)
      }
    }
    stickerBox.innerHTML = html
  }

  window.setGBFSticker = (btn) => {
    const stickerBox = document.getElementById('block-gbf-sticker')
    if (stickerBox) {
      if (stickerBox.style.display === 'block') {
        stickerBox.style.display = 'none'
        return
      } else if (stickerBox.style.display === 'none') {
        stickerBox.style.display = 'block'
        let btns = stickerBox.parentNode.parentNode.querySelectorAll('span>div:not(.gbf-sticker)')
        btns.forEach(item => item.style.display = 'none')
        return
      }
      
      stickerBox.style.display = 'block'
      insertStickers(stickerBox)
    }
  }

  const insertBtn = () => {
    if (document.querySelector('button#gbf-sticker')) return
    const btnBlock = document.querySelector(`#${boxId} .div3 .block_txt_big:last-child`)
    btnBlock.insertAdjacentHTML('afterend', '<button id="gbf-sticker" class="block_txt_big" onclick="window.setGBFSticker(this)">GBF</button>')
    const stcBlock = document.querySelector(`#${boxId} .div3>span:last-child>div:last-child`)
    stcBlock.insertAdjacentHTML('afterend', '<div id="block-gbf-sticker" class="gbf-sticker"></div>')
  }
  const mutationCallback = (mutationsList) => {
    for (let mutation of mutationsList) {
      const type = mutation.type
      const addedNodes = mutation.addedNodes
      if (type === 'childList' && addedNodes.length && addedNodes.length < 2) {
        addedNodes.forEach(node => {
          if (/^commonwindow\d+$/.test(node.id) && node.querySelector('.tip_title .title').innerText === '插入表情') {
            boxId = node.id
            insertBtn()
          }
        })
      }
    }
  }

  const obConfig = {
    subtree: true,
    childList: true
  }

  const targetNode = document.body
  const observer = new MutationObserver(mutationCallback)
  observer.observe(targetNode, obConfig)
})();