/*
 * Bittorrent Client using Qt and libtorrent.
 * Copyright (C) 2009  Christophe Dumez <chris@qbittorrent.org>
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 *
 * In addition, as a special exception, the copyright holders give permission to
 * link this program with the OpenSSL project's "OpenSSL" library (or with
 * modified versions of it that use the same license as the "OpenSSL" library),
 * and distribute the linked executables. You must obey the GNU General Public
 * License in all respects for all of the code used other than "OpenSSL".  If you
 * modify file(s), you may extend this exception to your version of the file(s),
 * but you are not obligated to do so. If you do not wish to do so, delete this
 * exception statement from your version.
 */

'use strict'

if (window.qBittorrent === undefined) {
  window.qBittorrent = {}
}

window.qBittorrent.ContextMenu = (function () {
  const exports = function () {
    return {
      ContextMenu: ContextMenu,
      TorrentsTableContextMenu: TorrentsTableContextMenu,
      CategoriesFilterContextMenu: CategoriesFilterContextMenu,
      TagsFilterContextMenu: TagsFilterContextMenu,
      SearchPluginsTableContextMenu: SearchPluginsTableContextMenu,
      RssFeedContextMenu: RssFeedContextMenu,
      RssArticleContextMenu: RssArticleContextMenu,
      RssDownloaderRuleContextMenu: RssDownloaderRuleContextMenu,
    }
  }

  let lastShownContextMenu = null
  const ContextMenu = new Class({
    //implements
    Implements: [Options, Events],

    //options
    options: {
      actions: {},
      menu: 'menu_id',
      stopEvent: true,
      targets: 'body',
      offsets: {
        x: 0,
        y: 0,
      },
      onShow: $empty,
      onHide: $empty,
      onClick: $empty,
      fadeSpeed: 200,
      touchTimer: 600,
    },

    //initialization
    initialize: function (options) {
      //set options
      this.setOptions(options)

      //option diffs menu
      this.menu = $(this.options.menu)
      this.targets = $$(this.options.targets)

      //fx
      this.fx = new Fx.Tween(this.menu, {
        property: 'opacity',
        duration: this.options.fadeSpeed,
        onComplete: function () {
          if (this.getStyle('opacity')) {
            this.setStyle('visibility', 'visible')
          } else {
            this.setStyle('visibility', 'hidden')
          }
        }.bind(this.menu),
      })

      //hide and begin the listener
      this.hide().startListener()

      //hide the menu
      this.menu.setStyles({
        position: 'absolute',
        top: '-900000px',
        display: 'block',
      })
    },

    adjustMenuPosition: function (e) {
      this.updateMenuItems()

      const scrollableMenuMaxHeight =
        document.documentElement.clientHeight * 0.75

      if (this.menu.hasClass('scrollableMenu'))
        this.menu.setStyle('max-height', scrollableMenuMaxHeight)

      // draw the menu off-screen to know the menu dimensions
      this.menu.setStyles({
        left: '-999em',
        top: '-999em',
      })

      // position the menu
      let xPosMenu = e.page.x + this.options.offsets.x
      let yPosMenu = e.page.y + this.options.offsets.y
      if (
        xPosMenu + this.menu.offsetWidth >
        document.documentElement.clientWidth
      )
        xPosMenu -= this.menu.offsetWidth
      if (
        yPosMenu + this.menu.offsetHeight >
        document.documentElement.clientHeight
      )
        yPosMenu =
          document.documentElement.clientHeight - this.menu.offsetHeight
      if (xPosMenu < 0) xPosMenu = 0
      if (yPosMenu < 0) yPosMenu = 0
      this.menu.setStyles({
        left: xPosMenu,
        top: yPosMenu,
        position: 'absolute',
        'z-index': '2000',
      })

      // position the sub-menu
      const uls = this.menu.getElementsByTagName('ul')
      for (let i = 0; i < uls.length; ++i) {
        const ul = uls[i]
        if (ul.hasClass('scrollableMenu'))
          ul.setStyle('max-height', scrollableMenuMaxHeight)
        const rectParent = ul.parentNode.getBoundingClientRect()
        const xPosOrigin = rectParent.left
        const yPosOrigin = rectParent.bottom
        let xPos = xPosOrigin + rectParent.width - 1
        let yPos = yPosOrigin - rectParent.height - 1
        if (xPos + ul.offsetWidth > document.documentElement.clientWidth)
          xPos -= ul.offsetWidth + rectParent.width - 2
        if (yPos + ul.offsetHeight > document.documentElement.clientHeight)
          yPos = document.documentElement.clientHeight - ul.offsetHeight
        if (xPos < 0) xPos = 0
        if (yPos < 0) yPos = 0
        ul.setStyles({
          'margin-left': xPos - xPosOrigin,
          'margin-top': yPos - yPosOrigin,
        })
      }
    },

    setupEventListeners: function (elem) {
      elem.addEvent(
        'contextmenu',
        function (e) {
          this.triggerMenu(e, elem)
        }.bind(this)
      )
      elem.addEvent(
        'click',
        function (e) {
          this.hide()
        }.bind(this)
      )

      elem.addEvent(
        'touchstart',
        function (e) {
          e.preventDefault()
          clearTimeout(this.touchstartTimer)
          this.hide()

          const touchstartEvent = e
          this.touchstartTimer = setTimeout(
            function () {
              this.triggerMenu(touchstartEvent, elem)
            }.bind(this),
            this.options.touchTimer
          )
        }.bind(this)
      )
      elem.addEvent(
        'touchend',
        function (e) {
          e.preventDefault()
          clearTimeout(this.touchstartTimer)
        }.bind(this)
      )
    },

    addTarget: function (t) {
      this.targets[this.targets.length] = t
      this.setupEventListeners(t)
    },

    triggerMenu: function (e, el) {
      if (this.options.disabled) return

      //prevent default, if told to
      if (this.options.stopEvent) {
        e.stop()
      }
      //record this as the trigger
      this.options.element = $(el)
      this.adjustMenuPosition(e)
      //show the menu
      this.show()
    },

    //get things started
    startListener: function () {
      /* all elements */
      this.targets.each(
        function (el) {
          this.setupEventListeners(el)
        }.bind(this),
        this
      )

      /* menu items */
      this.menu.getElements('a').each(function (item) {
        item.addEvent(
          'click',
          function (e) {
            e.preventDefault()
            if (!item.hasClass('disabled')) {
              this.execute(
                item.get('href').split('#')[1],
                $(this.options.element)
              )
              this.fireEvent('click', [item, e])
            }
          }.bind(this)
        )
      }, this)

      //hide on body click
      $(document.body).addEvent(
        'click',
        function () {
          this.hide()
        }.bind(this)
      )
    },

    updateMenuItems: function () {},

    //show menu
    show: function (trigger) {
      if (lastShownContextMenu && lastShownContextMenu != this)
        lastShownContextMenu.hide()
      this.fx.start(1)
      this.fireEvent('show')
      this.shown = true
      lastShownContextMenu = this
      return this
    },

    //hide the menu
    hide: function (trigger) {
      if (this.shown) {
        this.fx.start(0)
        //this.menu.fade('out');
        this.fireEvent('hide')
        this.shown = false
      }
      return this
    },

    setItemChecked: function (item, checked) {
      if (this.menu.getElement('a[href$=' + item + ']')) {
        this.menu.getElement('a[href$=' + item + ']').firstChild.style.opacity =
          checked ? '1' : '0'
      }
      return this
    },

    getItemChecked: function (item) {
      if (this.menu.getElement('a[href$=' + item + ']')) {
        return (
          '0' !=
          this.menu.getElement('a[href$=' + item + ']').firstChild.style.opacity
        )
      } else {
        return '0'
      }
    },

    //hide an item
    hideItem: function (item) {
      if (this.menu.getElement('a[href$=' + item + ']')) {
        this.menu
          .getElement('a[href$=' + item + ']')
          .parentNode.addClass('invisible')
      }
      return this
    },

    //show an item
    showItem: function (item) {
      if (this.menu.getElement('a[href$=' + item + ']')) {
        this.menu
          .getElement('a[href$=' + item + ']')
          .parentNode.removeClass('invisible')
      }
      return this
    },

    //disable the entire menu
    disable: function () {
      this.options.disabled = true
      return this
    },

    //enable the entire menu
    enable: function () {
      this.options.disabled = false
      return this
    },

    //execute an action
    execute: function (action, element) {
      if (this.options.actions[action]) {
        this.options.actions[action](element, this, action)
      }
      return this
    },
  })

  const TorrentsTableContextMenu = new Class({
    Extends: ContextMenu,

    updateMenuItems: function () {
      let all_are_seq_dl = true
      let there_are_seq_dl = false
      let all_are_f_l_piece_prio = true
      let there_are_f_l_piece_prio = false
      let all_are_downloaded = true
      let all_are_paused = true
      let there_are_paused = false
      let all_are_force_start = true
      let there_are_force_start = false
      let all_are_super_seeding = true
      let all_are_auto_tmm = true
      let there_are_auto_tmm = false
      const tagsSelectionState = Object.clone(tagList)

      const h = torrentsTable.selectedRowsIds()
      h.each(function (item, index) {
        const data = torrentsTable.rows.get(item).full_data

        if (data['seq_dl'] !== true) all_are_seq_dl = false
        else there_are_seq_dl = true

        if (data['f_l_piece_prio'] !== true) all_are_f_l_piece_prio = false
        else there_are_f_l_piece_prio = true

        if (data['progress'] != 1.0)
          // not downloaded
          all_are_downloaded = false
        else if (data['super_seeding'] !== true) all_are_super_seeding = false

        if (data['state'] != 'pausedUP' && data['state'] != 'pausedDL')
          all_are_paused = false
        else there_are_paused = true

        if (data['force_start'] !== true) all_are_force_start = false
        else there_are_force_start = true

        if (data['auto_tmm'] === true) there_are_auto_tmm = true
        else all_are_auto_tmm = false

        const torrentTags = data['tags'].split(', ')
        for (const key in tagsSelectionState) {
          const tag = tagsSelectionState[key]
          const tagExists = torrentTags.contains(tag.name)
          if (tag.checked !== undefined && tag.checked != tagExists)
            tag.indeterminate = true
          if (tag.checked === undefined) tag.checked = tagExists
          else tag.checked = tag.checked && tagExists
        }
      })

      let show_seq_dl = true

      // hide renameFiles when more than 1 torrent is selected
      if (h.length == 1) {
        const data = torrentsTable.rows.get(h[0]).full_data
        let metadata_downloaded = !(
          data['state'] == 'metaDL' ||
          data['state'] == 'forcedMetaDL' ||
          data['total_size'] == -1
        )

        // hide renameFiles when metadata hasn't been downloaded yet
        metadata_downloaded
          ? this.showItem('renameFiles')
          : this.hideItem('renameFiles')
      } else this.hideItem('renameFiles')

      if (!all_are_seq_dl && there_are_seq_dl) show_seq_dl = false

      let show_f_l_piece_prio = true

      if (!all_are_f_l_piece_prio && there_are_f_l_piece_prio)
        show_f_l_piece_prio = false

      if (all_are_downloaded) {
        this.hideItem('downloadLimit')
        this.menu
          .getElement('a[href$=uploadLimit]')
          .parentNode.addClass('separator')
        this.hideItem('sequentialDownload')
        this.hideItem('firstLastPiecePrio')
        this.showItem('superSeeding')
        this.setItemChecked('superSeeding', all_are_super_seeding)
      } else {
        if (!show_seq_dl && show_f_l_piece_prio)
          this.menu
            .getElement('a[href$=firstLastPiecePrio]')
            .parentNode.addClass('separator')
        else
          this.menu
            .getElement('a[href$=firstLastPiecePrio]')
            .parentNode.removeClass('separator')

        if (show_seq_dl) this.showItem('sequentialDownload')
        else this.hideItem('sequentialDownload')

        if (show_f_l_piece_prio) this.showItem('firstLastPiecePrio')
        else this.hideItem('firstLastPiecePrio')

        this.setItemChecked('sequentialDownload', all_are_seq_dl)
        this.setItemChecked('firstLastPiecePrio', all_are_f_l_piece_prio)

        this.showItem('downloadLimit')
        this.menu
          .getElement('a[href$=uploadLimit]')
          .parentNode.removeClass('separator')
        this.hideItem('superSeeding')
      }

      this.showItem('start')
      this.showItem('pause')
      this.showItem('forceStart')
      if (all_are_paused) this.hideItem('pause')
      else if (all_are_force_start) this.hideItem('forceStart')
      else if (!there_are_paused && !there_are_force_start)
        this.hideItem('start')

      if (!all_are_auto_tmm && there_are_auto_tmm) {
        this.hideItem('autoTorrentManagement')
      } else {
        this.showItem('autoTorrentManagement')
        this.setItemChecked('autoTorrentManagement', all_are_auto_tmm)
      }

      const contextTagList = $('contextTagList')
      for (const tagHash in tagList) {
        const checkbox = contextTagList.getElement(
          'a[href=#Tag/' + tagHash + '] input[type=checkbox]'
        )
        const checkboxState = tagsSelectionState[tagHash]
        checkbox.indeterminate = checkboxState.indeterminate
        checkbox.checked = checkboxState.checked
      }
    },

    updateCategoriesSubMenu: function (category_list) {
      const categoryList = $('contextCategoryList')
      categoryList.empty()
      categoryList.appendChild(
        new Element('li', {
          html: '<a href="javascript:torrentNewCategoryFN();"><img src="images/list-add.svg" alt="New...)QBT_TR[CONTEXT=TransferListWidget]"/> QBT_TR(New...</a>',
        })
      )
      categoryList.appendChild(
        new Element('li', {
          html: '<a href="javascript:torrentSetCategoryFN(0);"><img src="images/edit-clear.svg" alt="Reset)QBT_TR[CONTEXT=TransferListWidget]"/> QBT_TR(Reset</a>',
        })
      )

      const sortedCategories = []
      Object.each(category_list, function (category) {
        sortedCategories.push(category.name)
      })
      sortedCategories.sort()

      let first = true
      Object.each(sortedCategories, function (categoryName) {
        const categoryHash = genHash(categoryName)
        const el = new Element('li', {
          html:
            '<a href="javascript:torrentSetCategoryFN(\'' +
            categoryHash +
            '\');"><img src="images/view-categories.svg"/> ' +
            window.qBittorrent.Misc.escapeHtml(categoryName) +
            '</a>',
        })
        if (first) {
          el.addClass('separator')
          first = false
        }
        categoryList.appendChild(el)
      })
    },

    updateTagsSubMenu: function (tagList) {
      const contextTagList = $('contextTagList')
      while (contextTagList.firstChild !== null)
        contextTagList.removeChild(contextTagList.firstChild)

      contextTagList.appendChild(
        new Element('li', {
          html:
            '<a href="javascript:torrentAddTagsFN();">' +
            '<img src="images/list-add.svg" alt="Add..."/>' +
            ' Add...' +
            '</a>',
        })
      )
      contextTagList.appendChild(
        new Element('li', {
          html:
            '<a href="javascript:torrentRemoveAllTagsFN();">' +
            '<img src="images/edit-clear.svg" alt="Remove All"/>' +
            ' Remove All' +
            '</a>',
        })
      )

      const sortedTags = []
      for (const key in tagList) sortedTags.push(tagList[key].name)
      sortedTags.sort()

      for (let i = 0; i < sortedTags.length; ++i) {
        const tagName = sortedTags[i]
        const tagHash = genHash(tagName)
        const el = new Element('li', {
          html:
            '<a href="#Tag/' +
            tagHash +
            '" onclick="event.preventDefault(); torrentSetTagsFN(\'' +
            tagHash +
            "', !event.currentTarget.getElement('input[type=checkbox]').checked);\">" +
            '<input type="checkbox" onclick="this.checked = !this.checked;"> ' +
            window.qBittorrent.Misc.escapeHtml(tagName) +
            '</a>',
        })
        if (i === 0) el.addClass('separator')
        contextTagList.appendChild(el)
      }
    },
  })

  const CategoriesFilterContextMenu = new Class({
    Extends: ContextMenu,
    updateMenuItems: function () {
      const id = this.options.element.id
      if (id != CATEGORIES_ALL && id != CATEGORIES_UNCATEGORIZED) {
        this.showItem('editCategory')
        this.showItem('deleteCategory')
        if (useSubcategories) {
          this.showItem('createSubcategory')
        } else {
          this.hideItem('createSubcategory')
        }
      } else {
        this.hideItem('editCategory')
        this.hideItem('deleteCategory')
        this.hideItem('createSubcategory')
      }
    },
  })

  const TagsFilterContextMenu = new Class({
    Extends: ContextMenu,
    updateMenuItems: function () {
      const id = this.options.element.id
      if (id !== TAGS_ALL.toString() && id !== TAGS_UNTAGGED.toString())
        this.showItem('deleteTag')
      else this.hideItem('deleteTag')
    },
  })

  const SearchPluginsTableContextMenu = new Class({
    Extends: ContextMenu,

    updateMenuItems: function () {
      const enabledColumnIndex = function (text) {
        const columns = $('searchPluginsTableFixedHeaderRow').getChildren('th')
        for (let i = 0; i < columns.length; ++i)
          if (columns[i].get('html') === 'Enabled') return i
      }

      this.showItem('Enabled')
      this.setItemChecked(
        'Enabled',
        this.options.element
          .getChildren('td')
          [enabledColumnIndex()].get('html') === 'Yes'
      )

      this.showItem('Uninstall')
    },
  })

  const RssFeedContextMenu = new Class({
    Extends: ContextMenu,
    updateMenuItems: function () {
      let selectedRows = window.qBittorrent.Rss.rssFeedTable.selectedRowsIds()
      this.menu
        .getElement('a[href$=newSubscription]')
        .parentNode.addClass('separator')
      switch (selectedRows.length) {
        case 0:
          // remove separator on top of newSubscription entry to avoid double line
          this.menu
            .getElement('a[href$=newSubscription]')
            .parentNode.removeClass('separator')
          // menu when nothing selected
          this.hideItem('update')
          this.hideItem('markRead')
          this.hideItem('rename')
          this.hideItem('delete')
          this.showItem('newSubscription')
          this.showItem('newFolder')
          this.showItem('updateAll')
          this.hideItem('copyFeedURL')
          break
        case 1:
          if (selectedRows[0] === 0) {
            // menu when "unread" feed selected
            this.showItem('update')
            this.showItem('markRead')
            this.hideItem('rename')
            this.hideItem('delete')
            this.showItem('newSubscription')
            this.hideItem('newFolder')
            this.hideItem('updateAll')
            this.hideItem('copyFeedURL')
          } else if (
            window.qBittorrent.Rss.rssFeedTable.rows[selectedRows[0]].full_data
              .dataUid === ''
          ) {
            // menu when single folder selected
            this.showItem('update')
            this.showItem('markRead')
            this.showItem('rename')
            this.showItem('delete')
            this.showItem('newSubscription')
            this.showItem('newFolder')
            this.hideItem('updateAll')
            this.hideItem('copyFeedURL')
          } else {
            // menu when single feed selected
            this.showItem('update')
            this.showItem('markRead')
            this.showItem('rename')
            this.showItem('delete')
            this.showItem('newSubscription')
            this.hideItem('newFolder')
            this.hideItem('updateAll')
            this.showItem('copyFeedURL')
          }
          break
        default:
          // menu when multiple items selected
          this.showItem('update')
          this.showItem('markRead')
          this.hideItem('rename')
          this.showItem('delete')
          this.hideItem('newSubscription')
          this.hideItem('newFolder')
          this.hideItem('updateAll')
          this.showItem('copyFeedURL')
          break
      }
    },
  })

  const RssArticleContextMenu = new Class({
    Extends: ContextMenu,
  })

  const RssDownloaderRuleContextMenu = new Class({
    Extends: ContextMenu,
    adjustMenuPosition: function (e) {
      this.updateMenuItems()

      // draw the menu off-screen to know the menu dimensions
      this.menu.setStyles({
        left: '-999em',
        top: '-999em',
      })
      // position the menu
      let xPosMenu =
        e.page.x + this.options.offsets.x - $('rssdownloaderpage').offsetLeft
      let yPosMenu =
        e.page.y + this.options.offsets.y - $('rssdownloaderpage').offsetTop
      if (
        xPosMenu + this.menu.offsetWidth >
        document.documentElement.clientWidth
      )
        xPosMenu -= this.menu.offsetWidth
      if (
        yPosMenu + this.menu.offsetHeight >
        document.documentElement.clientHeight
      )
        yPosMenu =
          document.documentElement.clientHeight - this.menu.offsetHeight
      xPosMenu = Math.max(xPosMenu, 0)
      yPosMenu = Math.max(yPosMenu, 0)

      this.menu.setStyles({
        left: xPosMenu,
        top: yPosMenu,
        position: 'absolute',
        'z-index': '2000',
      })
    },
    updateMenuItems: function () {
      let selectedRows =
        window.qBittorrent.RssDownloader.rssDownloaderRulesTable.selectedRowsIds()
      this.showItem('addRule')
      switch (selectedRows.length) {
        case 0:
          // menu when nothing selected
          this.hideItem('deleteRule')
          this.hideItem('renameRule')
          this.hideItem('clearDownloadedEpisodes')
          break
        case 1:
          // menu when single item selected
          this.showItem('deleteRule')
          this.showItem('renameRule')
          this.showItem('clearDownloadedEpisodes')
          break
        default:
          // menu when multiple items selected
          this.showItem('deleteRule')
          this.hideItem('renameRule')
          this.showItem('clearDownloadedEpisodes')
          break
      }
    },
  })

  return exports()
})()

Object.freeze(window.qBittorrent.ContextMenu)