/* global $, Vue, _, alerts, mde, socket */

let vueFile = new Vue({
  el: '#modal-editor-file',
  data: {
    isLoading: false,
    isLoadingText: '',
    newFolderName: '',
    newFolderShow: false,
    newFolderError: false,
    folders: [],
    currentFolder: '',
    currentFile: '',
    files: [],
    uploadSucceeded: false,
    postUploadChecks: 0,
    renameFileShow: false,
    renameFileId: '',
    renameFileFilename: '',
    deleteFileShow: false,
    deleteFileId: '',
    deleteFileFilename: ''
  },
  methods: {

    open: () => {
      mdeModalOpenState = true // eslint-disable-line no-undef
      $('#modal-editor-file').addClass('is-active')
      vueFile.refreshFolders()
    },
    cancel: (ev) => {
      mdeModalOpenState = false // eslint-disable-line no-undef
      $('#modal-editor-file').removeClass('is-active')
    },

    // -------------------------------------------
    // INSERT LINK TO FILE
    // -------------------------------------------

    selectFile: (fileId) => {
      vueFile.currentFile = fileId
    },
    insertFileLink: (ev) => {
      if (mde.codemirror.doc.somethingSelected()) {
        mde.codemirror.execCommand('singleSelection')
      }

      let selFile = _.find(vueFile.files, ['_id', vueFile.currentFile])
      selFile.normalizedPath = (selFile.folder === 'f:') ? selFile.filename : selFile.folder.slice(2) + '/' + selFile.filename
      selFile.titleGuess = _.startCase(selFile.basename)

      let fileText = '[' + selFile.titleGuess + '](/uploads/' + selFile.normalizedPath + ' "' + selFile.titleGuess + '")'

      mde.codemirror.doc.replaceSelection(fileText)
      vueFile.cancel()
    },

    // -------------------------------------------
    // NEW FOLDER
    // -------------------------------------------

    newFolder: (ev) => {
      vueFile.newFolderName = ''
      vueFile.newFolderError = false
      vueFile.newFolderShow = true
      _.delay(() => { $('#txt-editor-file-newfoldername').focus() }, 400)
    },
    newFolderDiscard: (ev) => {
      vueFile.newFolderShow = false
    },
    newFolderCreate: (ev) => {
      let regFolderName = new RegExp('^[a-z0-9][a-z0-9-]*[a-z0-9]$')
      vueFile.newFolderName = _.kebabCase(_.trim(vueFile.newFolderName))

      if (_.isEmpty(vueFile.newFolderName) || !regFolderName.test(vueFile.newFolderName)) {
        vueFile.newFolderError = true
        return
      }

      vueFile.newFolderDiscard()
      vueFile.isLoadingText = 'Creating new folder...'
      vueFile.isLoading = true

      Vue.nextTick(() => {
        socket.emit('uploadsCreateFolder', { foldername: vueFile.newFolderName }, (data) => {
          vueFile.folders = data
          vueFile.currentFolder = vueFile.newFolderName
          vueFile.files = []
          vueFile.isLoading = false
        })
      })
    },

    // -------------------------------------------
    // RENAME FILE
    // -------------------------------------------

    renameFile: () => {
      let c = _.find(vueFile.files, [ '_id', vueFile.renameFileId ])
      vueFile.renameFileFilename = c.basename || ''
      vueFile.renameFileShow = true
      _.delay(() => {
        $('#txt-editor-renamefile').focus()
        _.defer(() => { $('#txt-editor-file-rename').select() })
      }, 400)
    },
    renameFileDiscard: () => {
      vueFile.renameFileShow = false
    },
    renameFileGo: () => {
      vueFile.renameFileDiscard()
      vueFile.isLoadingText = 'Renaming file...'
      vueFile.isLoading = true

      Vue.nextTick(() => {
        socket.emit('uploadsRenameFile', { uid: vueFile.renameFileId, folder: vueFile.currentFolder, filename: vueFile.renameFileFilename }, (data) => {
          if (data.ok) {
            vueFile.waitChangeComplete(vueFile.files.length, false)
          } else {
            vueFile.isLoading = false
            alerts.pushError('Rename error', data.msg)
          }
        })
      })
    },

    // -------------------------------------------
    // MOVE FILE
    // -------------------------------------------

    moveFile: (uid, fld) => {
      vueFile.isLoadingText = 'Moving file...'
      vueFile.isLoading = true
      Vue.nextTick(() => {
        socket.emit('uploadsMoveFile', { uid, folder: fld }, (data) => {
          if (data.ok) {
            vueFile.loadFiles()
          } else {
            vueFile.isLoading = false
            alerts.pushError('Rename error', data.msg)
          }
        })
      })
    },

    // -------------------------------------------
    // DELETE FILE
    // -------------------------------------------

    deleteFileWarn: (show) => {
      if (show) {
        let c = _.find(vueFile.files, [ '_id', vueFile.deleteFileId ])
        vueFile.deleteFileFilename = c.filename || 'this file'
      }
      vueFile.deleteFileShow = show
    },
    deleteFileGo: () => {
      vueFile.deleteFileWarn(false)
      vueFile.isLoadingText = 'Deleting file...'
      vueFile.isLoading = true
      Vue.nextTick(() => {
        socket.emit('uploadsDeleteFile', { uid: vueFile.deleteFileId }, (data) => {
          vueFile.loadFiles()
        })
      })
    },

    // -------------------------------------------
    // LOAD FROM REMOTE
    // -------------------------------------------

    selectFolder: (fldName) => {
      vueFile.currentFolder = fldName
      vueFile.loadFiles()
    },

    refreshFolders: () => {
      vueFile.isLoadingText = 'Fetching folders list...'
      vueFile.isLoading = true
      vueFile.currentFolder = ''
      vueFile.currentImage = ''
      Vue.nextTick(() => {
        socket.emit('uploadsGetFolders', { }, (data) => {
          vueFile.folders = data
          vueFile.loadFiles()
        })
      })
    },

    loadFiles: (silent) => {
      if (!silent) {
        vueFile.isLoadingText = 'Fetching files...'
        vueFile.isLoading = true
      }
      return new Promise((resolve, reject) => {
        Vue.nextTick(() => {
          socket.emit('uploadsGetFiles', { folder: vueFile.currentFolder }, (data) => {
            vueFile.files = data
            if (!silent) {
              vueFile.isLoading = false
            }
            vueFile.attachContextMenus()
            resolve(true)
          })
        })
      })
    },

    waitChangeComplete: (oldAmount, expectChange) => {
      expectChange = (_.isBoolean(expectChange)) ? expectChange : true

      vueFile.postUploadChecks++
      vueFile.isLoadingText = 'Processing...'

      Vue.nextTick(() => {
        vueFile.loadFiles(true).then(() => {
          if ((vueFile.files.length !== oldAmount) === expectChange) {
            vueFile.postUploadChecks = 0
            vueFile.isLoading = false
          } else if (vueFile.postUploadChecks > 5) {
            vueFile.postUploadChecks = 0
            vueFile.isLoading = false
            alerts.pushError('Unable to fetch updated listing', 'Try again later')
          } else {
            _.delay(() => {
              vueFile.waitChangeComplete(oldAmount, expectChange)
            }, 1500)
          }
        })
      })
    },

    // -------------------------------------------
    // IMAGE CONTEXT MENU
    // -------------------------------------------

    attachContextMenus: () => {
      let moveFolders = _.map(vueFile.folders, (f) => {
        return {
          name: (f !== '') ? f : '/ (root)',
          icon: 'fa-folder',
          callback: (key, opt) => {
            let moveFileId = _.toString($(opt.$trigger).data('uid'))
            let moveFileDestFolder = _.nth(vueFile.folders, key)
            vueFile.moveFile(moveFileId, moveFileDestFolder)
          }
        }
      })

      $.contextMenu('destroy', '.editor-modal-file-choices > figure')
      $.contextMenu({
        selector: '.editor-modal-file-choices > figure',
        appendTo: '.editor-modal-file-choices',
        position: (opt, x, y) => {
          $(opt.$trigger).addClass('is-contextopen')
          let trigPos = $(opt.$trigger).position()
          let trigDim = { w: $(opt.$trigger).width() / 5, h: $(opt.$trigger).height() / 2 }
          opt.$menu.css({ top: trigPos.top + trigDim.h, left: trigPos.left + trigDim.w })
        },
        events: {
          hide: (opt) => {
            $(opt.$trigger).removeClass('is-contextopen')
          }
        },
        items: {
          rename: {
            name: 'Rename',
            icon: 'fa-edit',
            callback: (key, opt) => {
              vueFile.renameFileId = _.toString(opt.$trigger[0].dataset.uid)
              vueFile.renameFile()
            }
          },
          move: {
            name: 'Move to...',
            icon: 'fa-folder-open-o',
            items: moveFolders
          },
          delete: {
            name: 'Delete',
            icon: 'fa-trash',
            callback: (key, opt) => {
              vueFile.deleteFileId = _.toString(opt.$trigger[0].dataset.uid)
              vueFile.deleteFileWarn(true)
            }
          }
        }
      })
    }

  }
})

$('#btn-editor-file-upload input').on('change', (ev) => {
  let curFileAmount = vueFile.files.length

  $(ev.currentTarget).simpleUpload('/uploads/file', {

    name: 'binfile',
    data: {
      folder: vueFile.currentFolder
    },
    limit: 20,
    expect: 'json',
    maxFileSize: 0,

    init: (totalUploads) => {
      vueFile.uploadSucceeded = false
      vueFile.isLoadingText = 'Preparing to upload...'
      vueFile.isLoading = true
    },

    progress: (progress) => {
      vueFile.isLoadingText = 'Uploading...' + Math.round(progress) + '%'
    },

    success: (data) => {
      if (data.ok) {
        let failedUpls = _.filter(data.results, ['ok', false])
        if (failedUpls.length) {
          _.forEach(failedUpls, (u) => {
            alerts.pushError('Upload error', u.msg)
          })
          if (failedUpls.length < data.results.length) {
            alerts.push({
              title: 'Some uploads succeeded',
              message: 'Files that are not mentionned in the errors above were uploaded successfully.'
            })
            vueFile.uploadSucceeded = true
          }
        } else {
          vueFile.uploadSucceeded = true
        }
      } else {
        alerts.pushError('Upload error', data.msg)
      }
    },

    error: (error) => {
      alerts.pushError('Upload error', error.message)
    },

    finish: () => {
      if (vueFile.uploadSucceeded) {
        vueFile.waitChangeComplete(curFileAmount, true)
      } else {
        vueFile.isLoading = false
      }
    }

  })
})
