// Backup Search Engines
// version 2021.10.0
// https://forum.vivaldi.net/post/277594
// Adds functionality to backup and restore search engines in
// vivaldi://settings/search.

(function () {
  function _msgSearch(pnt) {
    clearTimeout(_msgTimeout);
    if (pnt === "backup") {
      _infoSearch.innerText = "Search engines backup copied to clipboard";
    } else if (pnt === "restore") {
      _infoSearch.innerText = "Search engines restored";
    } else {
      _infoSearch.innerText = "Search engines code error";
    }
    _msgTimeout = setTimeout(function () {
      _infoSearch.innerText = "";
    }, 5000);
  }

  function _restoreSearch(e) {
    e.preventDefault();
    e.stopPropagation();
    if (e.type === "paste") {
      var clipboardData = e.clipboardData;
      var engineCode = clipboardData.getData("text");
    } else {
      var engineCode = e.dataTransfer.getData("text");
    }
    try {
      var engines = JSON.parse(engineCode);
    } catch (err) {
      _msgSearch("error");
      return;
    }
    if (
      "engines" in engines &&
      "default" in engines &&
      "defaultPrivate" in engines
    ) {
      chrome.storage.local.set(
        { SEARCH_ENGINE_COLLECTION: engines },
        function () {
          _msgSearch("restore");
        }
      );
    } else {
      _msgSearch("error");
    }
  }

  function _backupSearch() {
    chrome.storage.local.get({ SEARCH_ENGINE_COLLECTION: "" }, function (back) {
      const collection = back.SEARCH_ENGINE_COLLECTION;
      collection.engines = collection.engines.filter(
        (engine) => engine.removed === false
      );
      for (let i = 0; i < collection.engines.length; i++) {
        collection.engines[i].historyId = i + 1;
      }
      collection.nextHistoryId = collection.engines.length + 1;
      console.log(collection);
      const engineCode = JSON.stringify(collection);
      navigator.clipboard.writeText(engineCode);
      _msgSearch("backup");
    });
  }

  function searchEngines() {
    const styleCheck = document.getElementById("searchEngines");
    if (!styleCheck) {
      const style = document.createElement("style");
      style.id = "searchEngines";
      style.innerHTML =
        "#backupSearch, #restoreSearch {margin-left: 6px;}#restoreSearch{width: 130px;margin-top: 6px;}#restoreSearch::-webkit-input-placeholder {opacity: 1;color: var(--colorHighlightBg);text-align: center;}#msgConfirm{margin-left: 12px}";
      document.getElementsByTagName("head")[0].appendChild(style);
    }
    const modCheck = document.getElementById("backupSearch");
    if (!modCheck) {
      const place = document.querySelector(
        ".setting-section > div > .setting-group.unlimited > .setting-single"
      );
      const backupBtn = document.createElement("input");
      backupBtn.setAttribute("type", "button");
      backupBtn.setAttribute("value", "Backup");
      backupBtn.id = "backupSearch";
      place.insertBefore(backupBtn, place.lastChild);
      const restoreInput = document.createElement("input");
      restoreInput.setAttribute("type", "text");
      restoreInput.setAttribute("placeholder", "Restore Backup");
      restoreInput.id = "restoreSearch";
      place.insertBefore(restoreInput, place.lastChild);
      _infoSearch = document.createElement("span");
      _infoSearch.id = "msgConfirm";
      place.insertBefore(_infoSearch, place.lastChild);
      document
        .getElementById("backupSearch")
        .addEventListener("click", _backupSearch);
      const restoreSearch = document.getElementById("restoreSearch");
      restoreSearch.addEventListener("paste", _restoreSearch);
      restoreSearch.addEventListener("drop", _restoreSearch);
      _msgTimeout = {};
    }
  }

  const settingsUrl =
    "chrome-extension://mpognobbkildjkofajifpdfhcoklimli/components/settings/settings.html?path=";
  chrome.tabs.onUpdated.addListener(function (tabId, changeInfo, tab) {
    if (changeInfo.url === `${settingsUrl}search`) {
      setTimeout(searchEngines, 100);
    }
  });
})();