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

let vueImage = new Vue({
  el: '#modal-editor-image',
  data: {
    isLoading: false,
    isLoadingText: '',
    newFolderName: '',
    newFolderShow: false,
    newFolderError: false,
    fetchFromUrlURL: '',
    fetchFromUrlShow: false,
    folders: [],
    currentFolder: '',
    currentImage: '',
    currentAlign: 'left',
    images: [],
    uploadSucceeded: false,
    postUploadChecks: 0,
    renameImageShow: false,
    renameImageId: '',
    renameImageFilename: '',
    deleteImageShow: false,
    deleteImageId: '',
    deleteImageFilename: ''
  },
  methods: {

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

    // -------------------------------------------
    // INSERT IMAGE
    // -------------------------------------------

    selectImage: (imageId) => {
      vueImage.currentImage = imageId
    },
    insertImage: (ev) => {
      if (mde.codemirror.doc.somethingSelected()) {
        mde.codemirror.execCommand('singleSelection')
      }

      let selImage = _.find(vueImage.images, ['_id', vueImage.currentImage])
      selImage.normalizedPath = (selImage.folder === 'f:') ? selImage.filename : selImage.folder.slice(2) + '/' + selImage.filename
      selImage.titleGuess = _.startCase(selImage.basename)

      let imageText = '![' + selImage.titleGuess + '](/uploads/' + selImage.normalizedPath + ' "' + selImage.titleGuess + '")'
      switch (vueImage.currentAlign) {
        case 'center':
          imageText += '{.align-center}'
          break
        case 'right':
          imageText += '{.align-right}'
          break
        case 'logo':
          imageText += '{.pagelogo}'
          break
      }

      mde.codemirror.doc.replaceSelection(imageText)
      vueImage.cancel()
    },

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

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

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

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

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

    // -------------------------------------------
    // FETCH FROM URL
    // -------------------------------------------

    fetchFromUrl: (ev) => {
      vueImage.fetchFromUrlURL = ''
      vueImage.fetchFromUrlShow = true
      _.delay(() => { $('#txt-editor-image-fetchurl').focus() }, 400)
    },
    fetchFromUrlDiscard: (ev) => {
      vueImage.fetchFromUrlShow = false
    },
    fetchFromUrlGo: (ev) => {
      vueImage.fetchFromUrlDiscard()
      vueImage.isLoadingText = 'Fetching image...'
      vueImage.isLoading = true

      Vue.nextTick(() => {
        socket.emit('uploadsFetchFileFromURL', { folder: vueImage.currentFolder, fetchUrl: vueImage.fetchFromUrlURL }, (data) => {
          if (data.ok) {
            vueImage.waitChangeComplete(vueImage.images.length, true)
          } else {
            vueImage.isLoading = false
            alerts.pushError('Upload error', data.msg)
          }
        })
      })
    },

    // -------------------------------------------
    // RENAME IMAGE
    // -------------------------------------------

    renameImage: () => {
      let c = _.find(vueImage.images, [ '_id', vueImage.renameImageId ])
      vueImage.renameImageFilename = c.basename || ''
      vueImage.renameImageShow = true
      _.delay(() => {
        $('#txt-editor-image-rename').focus()
        _.defer(() => { $('#txt-editor-image-rename').select() })
      }, 400)
    },
    renameImageDiscard: () => {
      vueImage.renameImageShow = false
    },
    renameImageGo: () => {
      vueImage.renameImageDiscard()
      vueImage.isLoadingText = 'Renaming image...'
      vueImage.isLoading = true

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

    // -------------------------------------------
    // MOVE IMAGE
    // -------------------------------------------

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

    // -------------------------------------------
    // DELETE IMAGE
    // -------------------------------------------

    deleteImageWarn: (show) => {
      if (show) {
        let c = _.find(vueImage.images, [ '_id', vueImage.deleteImageId ])
        vueImage.deleteImageFilename = c.filename || 'this image'
      }
      vueImage.deleteImageShow = show
    },
    deleteImageGo: () => {
      vueImage.deleteImageWarn(false)
      vueImage.isLoadingText = 'Deleting image...'
      vueImage.isLoading = true
      Vue.nextTick(() => {
        socket.emit('uploadsDeleteFile', { uid: vueImage.deleteImageId }, (data) => {
          vueImage.loadImages()
        })
      })
    },

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

    selectFolder: (fldName) => {
      vueImage.currentFolder = fldName
      vueImage.loadImages()
    },

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

    loadImages: (silent) => {
      if (!silent) {
        vueImage.isLoadingText = 'Fetching images...'
        vueImage.isLoading = true
      }
      return new Promise((resolve, reject) => {
        Vue.nextTick(() => {
          socket.emit('uploadsGetImages', { folder: vueImage.currentFolder }, (data) => {
            vueImage.images = data
            if (!silent) {
              vueImage.isLoading = false
            }
            vueImage.attachContextMenus()
            resolve(true)
          })
        })
      })
    },

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

      vueImage.postUploadChecks++
      vueImage.isLoadingText = 'Processing...'

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

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

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

      $.contextMenu('destroy', '.editor-modal-image-choices > figure')
      $.contextMenu({
        selector: '.editor-modal-image-choices > figure',
        appendTo: '.editor-modal-image-choices',
        position: (opt, x, y) => {
          $(opt.$trigger).addClass('is-contextopen')
          let trigPos = $(opt.$trigger).position()
          let trigDim = { w: $(opt.$trigger).width() / 2, 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) => {
              vueImage.renameImageId = _.toString(opt.$trigger[0].dataset.uid)
              vueImage.renameImage()
            }
          },
          move: {
            name: 'Move to...',
            icon: 'fa-folder-open-o',
            items: moveFolders
          },
          delete: {
            name: 'Delete',
            icon: 'fa-trash',
            callback: (key, opt) => {
              vueImage.deleteImageId = _.toString(opt.$trigger[0].dataset.uid)
              vueImage.deleteImageWarn(true)
            }
          }
        }
      })
    }

  }
})

$('#btn-editor-image-upload input').on('change', (ev) => {
  let curImageAmount = vueImage.images.length

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

    name: 'imgfile',
    data: {
      folder: vueImage.currentFolder
    },
    limit: 20,
    expect: 'json',
    allowedExts: ['jpg', 'jpeg', 'gif', 'png', 'webp'],
    allowedTypes: ['image/png', 'image/jpeg', 'image/gif', 'image/webp'],
    maxFileSize: 3145728, // max 3 MB

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

    progress: (progress) => {
      vueImage.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.'
            })
            vueImage.uploadSucceeded = true
          }
        } else {
          vueImage.uploadSucceeded = true
        }
      } else {
        alerts.pushError('Upload error', data.msg)
      }
    },

    error: (error) => {
      alerts.pushError(error.message, this.upload.file.name)
    },

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

  })
})
