function getCurrentTab(callback) {
  chrome.tabs.query(
    {
      active: true,
      currentWindow: true
    },
    (_tabs) => {
      callback(_tabs[0]);
    }
  );
}

function getOptions(callback) {
  chrome.storage.local.get(['sleepyTabsOptions'], (result) => {
    callback(result.sleepyTabsOptions || {
      suspendAfterMins: 30,
      suspendIncognito: false,
      whitelistPages: [],
      whitelistDomains: [],
    });
  });
}

function onClick() {
  let _element = this;
  getCurrentTab((_tab) => {
    switch(_element.className) {
      case 'suspend-tab':
        chrome.runtime.sendMessage({
          type: 'SUSPEND_TAB',
          tab: _tab
        }, window.close);
        break;
      case 'un-suspend-tab':
        chrome.runtime.sendMessage({
          type: 'UNSUSPEND_TAB',
          tab: _tab
        }, window.close);
        break;
      case 'suspend-other':
        chrome.runtime.sendMessage({
          type: 'SUSPEND_OTHER_TABS',
          tab: _tab
        }, window.close);
        break;
      case 'un-suspend-all-tabs':
        chrome.runtime.sendMessage({
          type: 'UNSUSPEND_ALL_TABS',
          tab: _tab
        }, window.close);
        break;
      case 'never-suspend-page':
        chrome.runtime.sendMessage({
          type: 'NEVER_SUSPEND_PAGE',
          tab: _tab
        }, window.close);
        break;
      case 'remove-never-suspend-page':
        chrome.runtime.sendMessage({
          type: 'REMOVE_NEVER_SUSPEND_PAGE',
          tab: _tab
        }, window.close);
        break;
      case 'never-suspend-site':
        chrome.runtime.sendMessage({
          type: 'NEVER_SUSPEND_DOMAIN',
          tab: _tab
        }, window.close);
        break;
      case 'remove-never-suspend-site':
        chrome.runtime.sendMessage({
          type: 'REMOVE_NEVER_SUSPEND_DOMAIN',
          tab: _tab
        }, window.close);
        break;
    }
  });
};

document.querySelectorAll('a[href="#"]').forEach((_element, _index) => {
  _element.onclick = onClick;
});

let linkSuspendTab = document.querySelector('a.suspend-tab');
let linkUnSuspendTab = document.querySelector('a.un-suspend-tab');
let linkSuspendOther = document.querySelector('a.suspend-other');
let linkUnSuspendAll = document.querySelector('a.un-suspend-all');
let linkNeverSuspendPage = document.querySelector('a.never-suspend-page');
let linkRemoveNeverSuspendPage = document.querySelector('a.remove-never-suspend-page');
let linkNeverSuspendSite = document.querySelector('a.never-suspend-site');
let linkRemoveNeverSuspendSite = document.querySelector('a.remove-never-suspend-site');

getCurrentTab((_tab) => {
  getOptions((options) => {
    linkSuspendTab.style.display = _tab.url.match(/^chrome-extension:\S+suspended.html/) ? 'none' : 'block';
    linkUnSuspendTab.style.display = linkSuspendTab.style.display == 'none' ? 'block' : 'none';
    if(_tab.url.match(/^chrome/)) {
      linkNeverSuspendPage.style.display = 'none';
      linkRemoveNeverSuspendPage.style.display = 'none';
      linkNeverSuspendSite.style.display = 'none';
      linkRemoveNeverSuspendSite.style.display = 'none';
    } else {
      linkNeverSuspendPage.style.display = options.whitelistPages.indexOf(_tab.url.replace(/\?.*$/, '')) > -1 ? 'none' : 'block';
      linkRemoveNeverSuspendPage.style.display = linkNeverSuspendPage.style.display == 'none' ? 'block' : 'none';
      linkNeverSuspendSite.style.display = options.whitelistDomains.indexOf(_tab.url.replace(/(^https?:\/\/[^/]+).*$/, '$1')) > -1 ? 'none' : 'block';
      linkRemoveNeverSuspendSite.style.display = linkNeverSuspendSite.style.display == 'none' ? 'block' : 'none';
    }
  });
});