/**
 * User: Jinqn
 * Date: 14-04-08
 * Time: 下午16:34
 * 上传图片对话框逻辑代码,包括tab: 远程图片/上传图片/在线图片/搜索图片
 */

;(function () {
  var uploadFile, onlineFile

  window.onload = function () {
    initTabs()
    initButtons()
  }

  /* 初始化tab标签 */
  function initTabs() {
    var tabs = $G('tabhead').children
    for (var i = 0; i < tabs.length; i++) {
      domUtils.on(tabs[i], 'click', function (e) {
        var target = e.target || e.srcElement
        setTabFocus(target.getAttribute('data-content-id'))
      })
    }

    setTabFocus('upload')
  }

  /* 初始化tabbody */
  function setTabFocus(id) {
    if (!id) return
    var i,
      bodyId,
      tabs = $G('tabhead').children
    for (i = 0; i < tabs.length; i++) {
      bodyId = tabs[i].getAttribute('data-content-id')
      if (bodyId == id) {
        domUtils.addClass(tabs[i], 'focus')
        domUtils.addClass($G(bodyId), 'focus')
      } else {
        domUtils.removeClasses(tabs[i], 'focus')
        domUtils.removeClasses($G(bodyId), 'focus')
      }
    }
    switch (id) {
      case 'upload':
        uploadFile = uploadFile || new UploadFile('queueList')
        break
      case 'online':
        onlineFile = onlineFile || new OnlineFile('fileList')
        break
    }
  }

  /* 初始化onok事件 */
  function initButtons() {
    dialog.onok = function () {
      var list = [],
        id,
        tabs = $G('tabhead').children
      for (var i = 0; i < tabs.length; i++) {
        if (domUtils.hasClass(tabs[i], 'focus')) {
          id = tabs[i].getAttribute('data-content-id')
          break
        }
      }

      switch (id) {
        case 'upload':
          list = uploadFile.getInsertList()
          var count = uploadFile.getQueueCount()
          if (count) {
            $('.info', '#queueList').html(
              '<span style="color:red;">' +
                '还有2个未上传文件'.replace(/[\d]/, count) +
                '</span>'
            )
            return false
          }
          break
        case 'online':
          list = onlineFile.getInsertList()
          break
      }

      editor.execCommand('insertfile', list)
    }
  }

  /* 上传附件 */
  function UploadFile(target) {
    this.$wrap = target.constructor == String ? $('#' + target) : $(target)
    this.init()
  }
  UploadFile.prototype = {
    init: function () {
      this.fileList = []
      this.initContainer()
      this.initUploader()
    },
    initContainer: function () {
      this.$queue = this.$wrap.find('.filelist')
    },
    /* 初始化容器 */
    initUploader: function () {
      var _this = this,
        $ = jQuery, // just in case. Make sure it's not an other libaray.
        $wrap = _this.$wrap,
        // 图片容器
        $queue = $wrap.find('.filelist'),
        // 状态栏，包括进度和控制按钮
        $statusBar = $wrap.find('.statusBar'),
        // 文件总体选择信息。
        $info = $statusBar.find('.info'),
        // 上传按钮
        $upload = $wrap.find('.uploadBtn'),
        // 上传按钮
        $filePickerBtn = $wrap.find('.filePickerBtn'),
        // 上传按钮
        $filePickerBlock = $wrap.find('.filePickerBlock'),
        // 没选择文件之前的内容。
        $placeHolder = $wrap.find('.placeholder'),
        // 总体进度条
        $progress = $statusBar.find('.progress').hide(),
        // 添加的文件数量
        fileCount = 0,
        // 添加的文件总大小
        fileSize = 0,
        // 优化retina, 在retina下这个值是2
        ratio = window.devicePixelRatio || 1,
        // 缩略图大小
        thumbnailWidth = 113 * ratio,
        thumbnailHeight = 113 * ratio,
        // 可能有pedding, ready, uploading, confirm, done.
        state = '',
        // 所有文件的进度信息，key为file id
        percentages = {},
        supportTransition = (function () {
          var s = document.createElement('p').style,
            r =
              'transition' in s ||
              'WebkitTransition' in s ||
              'MozTransition' in s ||
              'msTransition' in s ||
              'OTransition' in s
          s = null
          return r
        })(),
        // WebUploader实例
        uploader,
        actionUrl = editor.getActionUrl(editor.getOpt('fileActionName')),
        fileMaxSize = editor.getOpt('fileMaxSize'),
        acceptExtensions = (editor.getOpt('fileAllowFiles') || [])
          .join('')
          .replace(/\./g, ',')
          .replace(/^[,]/, '')

      if (!WebUploader.Uploader.support()) {
        $('#filePickerReady')
          .after($('<div>').html(lang.errorNotSupport))
          .hide()
        return
      } else if (!editor.getOpt('fileActionName')) {
        $('#filePickerReady')
          .after($('<div>').html(lang.errorLoadConfig))
          .hide()
        return
      }

      uploader = _this.uploader = WebUploader.create({
        pick: {
          id: '#filePickerReady',
          label: lang.uploadSelectFile,
        },
        swf: '../../third-party/webuploader/Uploader.swf',
        server: actionUrl,
        fileVal: editor.getOpt('fileFieldName'),
        duplicate: true,
        fileSingleSizeLimit: fileMaxSize,
        compress: false,
      })
      uploader.addButton({
        id: '#filePickerBlock',
      })
      uploader.addButton({
        id: '#filePickerBtn',
        label: lang.uploadAddFile,
      })

      setState('pedding')

      // 当有文件添加进来时执行，负责view的创建
      function addFile(file) {
        var $li = $(
            '<li id="' +
              file.id +
              '">' +
              '<p class="title">' +
              file.name +
              '</p>' +
              '<p class="imgWrap"></p>' +
              '<p class="progress"><span></span></p>' +
              '</li>'
          ),
          $btns = $(
            '<div class="file-panel">' +
              '<span class="cancel">' +
              lang.uploadDelete +
              '</span>' +
              '<span class="rotateRight">' +
              lang.uploadTurnRight +
              '</span>' +
              '<span class="rotateLeft">' +
              lang.uploadTurnLeft +
              '</span></div>'
          ).appendTo($li),
          $prgress = $li.find('p.progress span'),
          $wrap = $li.find('p.imgWrap'),
          $info = $('<p class="error"></p>').hide().appendTo($li),
          showError = function (code) {
            switch (code) {
              case 'exceed_size':
                text = lang.errorExceedSize
                break
              case 'interrupt':
                text = lang.errorInterrupt
                break
              case 'http':
                text = lang.errorHttp
                break
              case 'not_allow_type':
                text = lang.errorFileType
                break
              default:
                text = lang.errorUploadRetry
                break
            }
            $info.text(text).show()
          }

        if (file.getStatus() === 'invalid') {
          showError(file.statusText)
        } else {
          $wrap.text(lang.uploadPreview)
          if (
            '|png|jpg|jpeg|bmp|gif|'.indexOf(
              '|' + file.ext.toLowerCase() + '|'
            ) == -1
          ) {
            $wrap
              .empty()
              .addClass('notimage')
              .append(
                '<i class="file-preview file-type-' +
                  file.ext.toLowerCase() +
                  '"></i>' +
                  '<span class="file-title" title="' +
                  file.name +
                  '">' +
                  file.name +
                  '</span>'
              )
          } else {
            if (browser.ie && browser.version <= 7) {
              $wrap.text(lang.uploadNoPreview)
            } else {
              uploader.makeThumb(
                file,
                function (error, src) {
                  if (error || !src) {
                    $wrap.text(lang.uploadNoPreview)
                  } else {
                    var $img = $('<img src="' + src + '">')
                    $wrap.empty().append($img)
                    $img.on('error', function () {
                      $wrap.text(lang.uploadNoPreview)
                    })
                  }
                },
                thumbnailWidth,
                thumbnailHeight
              )
            }
          }
          percentages[file.id] = [file.size, 0]
          file.rotation = 0

          /* 检查文件格式 */
          if (
            !file.ext ||
            acceptExtensions.indexOf(file.ext.toLowerCase()) == -1
          ) {
            showError('not_allow_type')
            uploader.removeFile(file)
          }
        }

        file.on('statuschange', function (cur, prev) {
          if (prev === 'progress') {
            $prgress.hide().width(0)
          } else if (prev === 'queued') {
            $li.off('mouseenter mouseleave')
            $btns.remove()
          }
          // 成功
          if (cur === 'error' || cur === 'invalid') {
            showError(file.statusText)
            percentages[file.id][1] = 1
          } else if (cur === 'interrupt') {
            showError('interrupt')
          } else if (cur === 'queued') {
            percentages[file.id][1] = 0
          } else if (cur === 'progress') {
            $info.hide()
            $prgress.css('display', 'block')
          } else if (cur === 'complete') {
          }

          $li.removeClass('state-' + prev).addClass('state-' + cur)
        })

        $li.on('mouseenter', function () {
          $btns.stop().animate({ height: 30 })
        })
        $li.on('mouseleave', function () {
          $btns.stop().animate({ height: 0 })
        })

        $btns.on('click', 'span', function () {
          var index = $(this).index(),
            deg

          switch (index) {
            case 0:
              uploader.removeFile(file)
              return
            case 1:
              file.rotation += 90
              break
            case 2:
              file.rotation -= 90
              break
          }

          if (supportTransition) {
            deg = 'rotate(' + file.rotation + 'deg)'
            $wrap.css({
              '-webkit-transform': deg,
              '-mos-transform': deg,
              '-o-transform': deg,
              transform: deg,
            })
          } else {
            $wrap.css(
              'filter',
              'progid:DXImageTransform.Microsoft.BasicImage(rotation=' +
                (~~(((file.rotation / 90) % 4) + 4) % 4) +
                ')'
            )
          }
        })

        $li.insertBefore($filePickerBlock)
      }

      // 负责view的销毁
      function removeFile(file) {
        var $li = $('#' + file.id)
        delete percentages[file.id]
        updateTotalProgress()
        $li.off().find('.file-panel').off().end().remove()
      }

      function updateTotalProgress() {
        var loaded = 0,
          total = 0,
          spans = $progress.children(),
          percent

        $.each(percentages, function (k, v) {
          total += v[0]
          loaded += v[0] * v[1]
        })

        percent = total ? loaded / total : 0

        spans.eq(0).text(Math.round(percent * 100) + '%')
        spans.eq(1).css('width', Math.round(percent * 100) + '%')
        updateStatus()
      }

      function setState(val, files) {
        if (val != state) {
          var stats = uploader.getStats()

          $upload.removeClass('state-' + state)
          $upload.addClass('state-' + val)

          switch (val) {
            /* 未选择文件 */
            case 'pedding':
              $queue.addClass('element-invisible')
              $statusBar.addClass('element-invisible')
              $placeHolder.removeClass('element-invisible')
              $progress.hide()
              $info.hide()
              uploader.refresh()
              break

            /* 可以开始上传 */
            case 'ready':
              $placeHolder.addClass('element-invisible')
              $queue.removeClass('element-invisible')
              $statusBar.removeClass('element-invisible')
              $progress.hide()
              $info.show()
              $upload.text(lang.uploadStart)
              uploader.refresh()
              break

            /* 上传中 */
            case 'uploading':
              $progress.show()
              $info.hide()
              $upload.text(lang.uploadPause)
              break

            /* 暂停上传 */
            case 'paused':
              $progress.show()
              $info.hide()
              $upload.text(lang.uploadContinue)
              break

            case 'confirm':
              $progress.show()
              $info.hide()
              $upload.text(lang.uploadStart)

              stats = uploader.getStats()
              if (stats.successNum && !stats.uploadFailNum) {
                setState('finish')
                return
              }
              break

            case 'finish':
              $progress.hide()
              $info.show()
              if (stats.uploadFailNum) {
                $upload.text(lang.uploadRetry)
              } else {
                $upload.text(lang.uploadStart)
              }
              break
          }

          state = val
          updateStatus()
        }

        if (!_this.getQueueCount()) {
          $upload.addClass('disabled')
        } else {
          $upload.removeClass('disabled')
        }
      }

      function updateStatus() {
        var text = '',
          stats

        if (state === 'ready') {
          text = lang.updateStatusReady
            .replace('_', fileCount)
            .replace('_KB', WebUploader.formatSize(fileSize))
        } else if (state === 'confirm') {
          stats = uploader.getStats()
          if (stats.uploadFailNum) {
            text = lang.updateStatusConfirm
              .replace('_', stats.successNum)
              .replace('_', stats.successNum)
          }
        } else {
          stats = uploader.getStats()
          text = lang.updateStatusFinish
            .replace('_', fileCount)
            .replace('_KB', WebUploader.formatSize(fileSize))
            .replace('_', stats.successNum)

          if (stats.uploadFailNum) {
            text += lang.updateStatusError.replace('_', stats.uploadFailNum)
          }
        }

        $info.html(text)
      }

      uploader.on('fileQueued', function (file) {
        fileCount++
        fileSize += file.size

        if (fileCount === 1) {
          $placeHolder.addClass('element-invisible')
          $statusBar.show()
        }

        addFile(file)
      })

      uploader.on('fileDequeued', function (file) {
        fileCount--
        fileSize -= file.size

        removeFile(file)
        updateTotalProgress()
      })

      uploader.on('filesQueued', function (file) {
        if (
          !uploader.isInProgress() &&
          (state == 'pedding' ||
            state == 'finish' ||
            state == 'confirm' ||
            state == 'ready')
        ) {
          setState('ready')
        }
        updateTotalProgress()
      })

      uploader.on('all', function (type, files) {
        switch (type) {
          case 'uploadFinished':
            setState('confirm', files)
            break
          case 'startUpload':
            /* 添加额外的GET参数 */
            var params =
                utils.serializeParam(editor.queryCommandValue('serverparam')) ||
                '',
              url = utils.formatUrl(
                actionUrl +
                  (actionUrl.indexOf('?') == -1 ? '?' : '&') +
                  'encode=utf-8&' +
                  params
              )
            uploader.option('server', url)
            setState('uploading', files)
            break
          case 'stopUpload':
            setState('paused', files)
            break
        }
      })

      uploader.on('uploadBeforeSend', function (file, data, header) {
        //这里可以通过data对象添加POST参数
        header['X_Requested_With'] = 'XMLHttpRequest'
        // HaoChuan9421
        if (
          editor.options.headers &&
          Object.prototype.toString.apply(editor.options.headers) ===
            '[object Object]'
        ) {
          for (var key in editor.options.headers) {
            header[key] = editor.options.headers[key]
          }
        }
      })

      uploader.on('uploadProgress', function (file, percentage) {
        var $li = $('#' + file.id),
          $percent = $li.find('.progress span')

        $percent.css('width', percentage * 100 + '%')
        percentages[file.id][1] = percentage
        updateTotalProgress()
      })

      uploader.on('uploadSuccess', function (file, ret) {
        var $file = $('#' + file.id)
        try {
          var responseText = ret._raw || ret,
            json = utils.str2json(responseText)
          if (json.state == 'SUCCESS') {
            _this.fileList.push(json)
            $file.append('<span class="success"></span>')
          } else {
            $file.find('.error').text(json.state).show()
          }
        } catch (e) {
          $file.find('.error').text(lang.errorServerUpload).show()
        }
      })

      uploader.on('uploadError', function (file, code) {})
      uploader.on('error', function (code, file) {
        if (code == 'Q_TYPE_DENIED' || code == 'F_EXCEED_SIZE') {
          addFile(file)
        }
      })
      uploader.on('uploadComplete', function (file, ret) {})

      $upload.on('click', function () {
        if ($(this).hasClass('disabled')) {
          return false
        }

        if (state === 'ready') {
          uploader.upload()
        } else if (state === 'paused') {
          uploader.upload()
        } else if (state === 'uploading') {
          uploader.stop()
        }
      })

      $upload.addClass('state-' + state)
      updateTotalProgress()
    },
    getQueueCount: function () {
      var file,
        i,
        status,
        readyFile = 0,
        files = this.uploader.getFiles()
      for (i = 0; (file = files[i++]); ) {
        status = file.getStatus()
        if (status == 'queued' || status == 'uploading' || status == 'progress')
          readyFile++
      }
      return readyFile
    },
    getInsertList: function () {
      var i,
        link,
        data,
        list = [],
        prefix = editor.getOpt('fileUrlPrefix')
      for (i = 0; i < this.fileList.length; i++) {
        data = this.fileList[i]
        link = data.url
        list.push({
          title: data.original || link.substr(link.lastIndexOf('/') + 1),
          url: prefix + link,
        })
      }
      return list
    },
  }

  /* 在线附件 */
  function OnlineFile(target) {
    this.container = utils.isString(target)
      ? document.getElementById(target)
      : target
    this.init()
  }
  OnlineFile.prototype = {
    init: function () {
      this.initContainer()
      this.initEvents()
      this.initData()
    },
    /* 初始化容器 */
    initContainer: function () {
      this.container.innerHTML = ''
      this.list = document.createElement('ul')
      this.clearFloat = document.createElement('li')

      domUtils.addClass(this.list, 'list')
      domUtils.addClass(this.clearFloat, 'clearFloat')

      this.list.appendChild(this.clearFloat)
      this.container.appendChild(this.list)
    },
    /* 初始化滚动事件,滚动到地步自动拉取数据 */
    initEvents: function () {
      var _this = this

      /* 滚动拉取图片 */
      domUtils.on($G('fileList'), 'scroll', function (e) {
        var panel = this
        if (panel.scrollHeight - (panel.offsetHeight + panel.scrollTop) < 10) {
          _this.getFileData()
        }
      })
      /* 选中图片 */
      domUtils.on(this.list, 'click', function (e) {
        var target = e.target || e.srcElement,
          li = target.parentNode

        if (li.tagName.toLowerCase() == 'li') {
          if (domUtils.hasClass(li, 'selected')) {
            domUtils.removeClasses(li, 'selected')
          } else {
            domUtils.addClass(li, 'selected')
          }
        }
      })
    },
    /* 初始化第一次的数据 */
    initData: function () {
      /* 拉取数据需要使用的值 */
      this.state = 0
      this.listSize = editor.getOpt('fileManagerListSize')
      this.listIndex = 0
      this.listEnd = false

      /* 第一次拉取数据 */
      this.getFileData()
    },
    /* 向后台拉取图片列表数据 */
    getFileData: function () {
      var _this = this

      if (!_this.listEnd && !this.isLoadingData) {
        this.isLoadingData = true
        ajax.request(
          editor.getActionUrl(editor.getOpt('fileManagerActionName')),
          {
            timeout: 100000,
            data: utils.extend(
              {
                start: this.listIndex,
                size: this.listSize,
              },
              editor.queryCommandValue('serverparam')
            ),
            method: 'get',
            onsuccess: function (r) {
              try {
                var json = eval('(' + r.responseText + ')')
                if (json.state == 'SUCCESS') {
                  _this.pushData(json.list)
                  _this.listIndex =
                    parseInt(json.start) + parseInt(json.list.length)
                  if (_this.listIndex >= json.total) {
                    _this.listEnd = true
                  }
                  _this.isLoadingData = false
                }
              } catch (e) {
                if (r.responseText.indexOf('ue_separate_ue') != -1) {
                  var list = r.responseText.split(r.responseText)
                  _this.pushData(list)
                  _this.listIndex = parseInt(list.length)
                  _this.listEnd = true
                  _this.isLoadingData = false
                }
              }
            },
            onerror: function () {
              _this.isLoadingData = false
            },
          }
        )
      }
    },
    /* 添加图片到列表界面上 */
    pushData: function (list) {
      var i,
        item,
        img,
        filetype,
        preview,
        icon,
        _this = this,
        urlPrefix = editor.getOpt('fileManagerUrlPrefix')
      for (i = 0; i < list.length; i++) {
        if (list[i] && list[i].url) {
          item = document.createElement('li')
          icon = document.createElement('span')
          filetype = list[i].url.substr(list[i].url.lastIndexOf('.') + 1)

          if ('png|jpg|jpeg|gif|bmp'.indexOf(filetype) != -1) {
            preview = document.createElement('img')
            domUtils.on(
              preview,
              'load',
              (function (image) {
                return function () {
                  _this.scale(
                    image,
                    image.parentNode.offsetWidth,
                    image.parentNode.offsetHeight
                  )
                }
              })(preview)
            )
            preview.width = 113
            preview.setAttribute(
              'src',
              urlPrefix +
                list[i].url +
                (list[i].url.indexOf('?') == -1 ? '?noCache=' : '&noCache=') +
                (+new Date()).toString(36)
            )
          } else {
            var ic = document.createElement('i'),
              textSpan = document.createElement('span')
            textSpan.innerHTML = list[i].url.substr(
              list[i].url.lastIndexOf('/') + 1
            )
            preview = document.createElement('div')
            preview.appendChild(ic)
            preview.appendChild(textSpan)
            domUtils.addClass(preview, 'file-wrapper')
            domUtils.addClass(textSpan, 'file-title')
            domUtils.addClass(ic, 'file-type-' + filetype)
            domUtils.addClass(ic, 'file-preview')
          }
          domUtils.addClass(icon, 'icon')
          item.setAttribute('data-url', urlPrefix + list[i].url)
          if (list[i].original) {
            item.setAttribute('data-title', list[i].original)
          }

          item.appendChild(preview)
          item.appendChild(icon)
          this.list.insertBefore(item, this.clearFloat)
        }
      }
    },
    /* 改变图片大小 */
    scale: function (img, w, h, type) {
      var ow = img.width,
        oh = img.height

      if (type == 'justify') {
        if (ow >= oh) {
          img.width = w
          img.height = (h * oh) / ow
          img.style.marginLeft = '-' + parseInt((img.width - w) / 2) + 'px'
        } else {
          img.width = (w * ow) / oh
          img.height = h
          img.style.marginTop = '-' + parseInt((img.height - h) / 2) + 'px'
        }
      } else {
        if (ow >= oh) {
          img.width = (w * ow) / oh
          img.height = h
          img.style.marginLeft = '-' + parseInt((img.width - w) / 2) + 'px'
        } else {
          img.width = w
          img.height = (h * oh) / ow
          img.style.marginTop = '-' + parseInt((img.height - h) / 2) + 'px'
        }
      }
    },
    getInsertList: function () {
      var i,
        lis = this.list.children,
        list = []
      for (i = 0; i < lis.length; i++) {
        if (domUtils.hasClass(lis[i], 'selected')) {
          var url = lis[i].getAttribute('data-url')
          var title =
            lis[i].getAttribute('data-title') ||
            url.substr(url.lastIndexOf('/') + 1)
          list.push({
            title: title,
            url: url,
          })
        }
      }
      return list
    },
  }
})()