/* eslint-disable
    handle-callback-err,
    no-return-assign,
    no-undef,
*/
// TODO: This file was created by bulk-decaffeinate.
// Fix any style issues and re-enable lint.
/*
 * decaffeinate suggestions:
 * DS101: Remove unnecessary use of Array.from
 * DS102: Remove unnecessary code created because of implicit returns
 * DS207: Consider shorter variations of null checks
 * Full docs: https://github.com/decaffeinate/decaffeinate/blob/master/docs/suggestions.md
 */
'use strict'

/* COMMON CODE */

/**
 * Provides a set of common callback methods to the $scope parameter. These methods are used
 * in the various machines' admin controllers.
 *
 * Provides :
 *  - $scope.submited(content)
 *  - $scope.cancel()
 *  - $scope.fileinputClass(v)
 *  - $scope.addFile()
 *  - $scope.deleteFile(file)
 *
 * Requires :
 *  - $scope.machine.machine_files_attributes = []
 *  - $state (Ui-Router) [ 'app.public.machines_list' ]
 */
class MachinesController {
  constructor ($scope, $state) {
    /**
     * For use with ngUpload (https://github.com/twilson63/ngUpload).
     * Intended to be the callback when the upload is done: any raised error will be stacked in the
     * $scope.alerts array. If everything goes fine, the user is redirected to the machines list.
     * @param content {Object} JSON - The upload's result
     */
    $scope.submited = function (content) {
      if ((content.id == null)) {
        $scope.alerts = []
        angular.forEach(content, function (v, k) {
          angular.forEach(function (v, err) {
            $scope.alerts.push({
              msg: k + ': ' + err,
              type: 'danger'
            })
          })
        })
      } else {
        return $state.go('app.public.machines_list')
      }
    }

    /**
     * Changes the current user's view, redirecting him to the machines list
     */
    $scope.cancel = function () { $state.go('app.public.machines_list') }

    /**
     * For use with 'ng-class', returns the CSS class name for the uploads previews.
     * The preview may show a placeholder or the content of the file depending on the upload state.
     * @param v {*} any attribute, will be tested for truthiness (see JS evaluation rules)
     */
    $scope.fileinputClass = function (v) {
      if (v) {
        return 'fileinput-exists'
      } else {
        return 'fileinput-new'
      }
    }

    /**
     * This will create a single new empty entry into the machine attachements list.
     */
    $scope.addFile = function () { $scope.machine.machine_files_attributes.push({}) }

    /**
     * This will remove the given file from the machine attachements list. If the file was previously uploaded
     * to the server, it will be marked for deletion on the server. Otherwise, it will be simply truncated from
     * the attachements array.
     * @param file {Object} the file to delete
     */
    $scope.deleteFile = function (file) {
      const index = $scope.machine.machine_files_attributes.indexOf(file)
      if (file.id != null) {
        return file._destroy = true
      } else {
        return $scope.machine.machine_files_attributes.splice(index, 1)
      }
    }
  }
}

/**
 * Manages the transition when a user clicks on the reservation button.
 * According to the status of user currently logged into the system, redirect him to the reservation page,
 * or display a modal window asking him to complete a training before he can book a machine reservation.
 * @param machine {{id:number}} An object containg the id of the machine to book,
 *   the object will be completed before the fonction returns.
 * @param e {Object} see https://docs.angularjs.org/guide/expression#-event-
 */
const _reserveMachine = function (machine, e) {
  const _this = this
  e.preventDefault()
  e.stopPropagation()

  // retrieve the full machine object
  return machine = _this.Machine.get({ id: machine.id }, function () {
    // if the currently logged'in user has completed the training for this machine, or this machine does not require
    // a prior training, just redirect him to the machine's booking page
    if (machine.current_user_is_training || (machine.trainings.length === 0)) {
      return _this.$state.go('app.logged.machines_reserve', { id: machine.slug })
    } else {
      // otherwise, if a user is authenticated ...
      if (_this.$scope.isAuthenticated()) {
        // ... and have booked a training for this machine, tell him that he must wait for an admin to validate
        // the training before he can book the reservation
        if (machine.current_user_training_reservation) {
          return _this.$uibModal.open({
            templateUrl: '<%= asset_path "machines/training_reservation_modal.html" %>',
            controller: ['$scope', '$uibModalInstance', '$state', function ($scope, $uibModalInstance, $state) {
              $scope.machine = machine
              return $scope.cancel = function () { $uibModalInstance.dismiss('cancel') }
            }
            ] })
        // ... but does not have booked the training, tell him to register for a training session first
        // unless all associated trainings are disabled
        } else {
          // if all trainings are disabled, just redirect the user to the reservation calendar
          if (machine.trainings.map(function (t) { return t.disabled }).reduce(function (acc, val) { return acc && val }, true)) {
            return _this.$state.go('app.logged.machines_reserve', { id: machine.slug })
          // otherwise open the information modal
          } else {
            return _this.$uibModal.open({
              templateUrl: '<%= asset_path "machines/request_training_modal.html" %>',
              controller: ['$scope', '$uibModalInstance', '$state', function ($scope, $uibModalInstance, $state) {
                $scope.machine = machine
                $scope.member = _this.$scope.currentUser

                // transform the name of the trainings associated with the machine to integrate them in a sentence
                $scope.humanizeTrainings = function () {
                  let text = ''
                  angular.forEach($scope.machine.trainings, function (training) {
                    if (text.length > 0) {
                      text += _this._t('machines_list._or_the_')
                    }
                    return text += training.name.substr(0, 1).toLowerCase() + training.name.substr(1)
                  })
                  return text
                }

                // modal is closed with validation
                $scope.ok = function () {
                  $state.go('app.logged.trainings_reserve', { id: $scope.machine.trainings[0].id })
                  return $uibModalInstance.close(machine)
                }

                // modal is closed with escaping
                return $scope.cancel = function (e) {
                  e.preventDefault()
                  return $uibModalInstance.dismiss('cancel')
                }
              }
              ] })
          }
        }

      // if the user is not logged, open the login modal window
      } else {
        return _this.$scope.login()
      }
    }
  })
}

/**
 * Controller used in the public listing page, allowing everyone to see the list of machines
 */
Application.Controllers.controller('MachinesController', ['$scope', '$state', '_t', 'Machine', '$uibModal', 'machinesPromise',
  function ($scope, $state, _t, Machine, $uibModal, machinesPromise) {
    // Retrieve the list of machines
    $scope.machines = machinesPromise

    /**
   * Redirect the user to the machine details page
   */
    $scope.showMachine = function (machine) { $state.go('app.public.machines_show', { id: machine.slug }) }

    /**
   * Callback to book a reservation for the current machine
   */
    $scope.reserveMachine = _reserveMachine.bind({
      $scope,
      $state,
      _t,
      $uibModal,
      Machine
    })

    // Default: we show only enabled machines
    $scope.machineFiltering = 'enabled'

    // Available options for filtering machines by status
    return $scope.filterDisabled = [
      'enabled',
      'disabled',
      'all'
    ]
  }
])

/**
 * Controller used in the machine creation page (admin)
 */
Application.Controllers.controller('NewMachineController', ['$scope', '$state', 'CSRF', function ($scope, $state, CSRF) {
  CSRF.setMetaTags()

  // API URL where the form will be posted
  $scope.actionUrl = '/api/machines/'

  // Form action on the above URL
  $scope.method = 'post'

  // default machine parameters
  $scope.machine =
    { machine_files_attributes: [] }

  // Using the MachinesController
  return new MachinesController($scope, $state)
}
])

/**
 * Controller used in the machine edition page (admin)
 */
Application.Controllers.controller('EditMachineController', ['$scope', '$state', '$stateParams', 'machinePromise', 'CSRF',
  function ($scope, $state, $stateParams, machinePromise, CSRF) {
  /* PUBLIC SCOPE */

    // API URL where the form will be posted
    $scope.actionUrl = `/api/machines/${$stateParams.id}`

    // Form action on the above URL
    $scope.method = 'put'

    // Retrieve the details for the machine id in the URL, if an error occurs redirect the user to the machines list
    $scope.machine = machinePromise

    /* PRIVATE SCOPE */

    /**
   * Kind of constructor: these actions will be realized first when the controller is loaded
   */
    const initialize = function () {
      CSRF.setMetaTags()

      // Using the MachinesController
      return new MachinesController($scope, $state)
    }

    // !!! MUST BE CALLED AT THE END of the controller
    return initialize()
  }
])

/**
 * Controller used in the machine details page (public)
 */
Application.Controllers.controller('ShowMachineController', ['$scope', '$state', '$uibModal', '$stateParams', '_t', 'Machine', 'growl', 'machinePromise', 'dialogs',
  function ($scope, $state, $uibModal, $stateParams, _t, Machine, growl, machinePromise, dialogs) {
  // Retrieve the details for the machine id in the URL, if an error occurs redirect the user to the machines list
    $scope.machine = machinePromise

    /**
     * Callback to delete the current machine (admins only)
     */
    $scope.delete = function (machine) {
    // check the permissions
      if ($scope.currentUser.role !== 'admin') {
        console.error(_t('unauthorized_operation'))
      } else {
        dialogs.confirm({
          resolve: {
            object () {
              return {
                title: _t('confirmation_required'),
                msg: _t('do_you_really_want_to_delete_this_machine')
              }
            }
          }
        }
        , function () { // deletion confirmed
        // delete the machine then redirect to the machines listing
          machine.$delete(
            function () { $state.go('app.public.machines_list') },
            function (error) { growl.warning(_t('the_machine_cant_be_deleted_because_it_is_already_reserved_by_some_users')); console.error(error) }
          )
        })
      }
    }

    /**
     * Callback to book a reservation for the current machine
     */
    return $scope.reserveMachine = _reserveMachine.bind({
      $scope,
      $state,
      _t,
      $uibModal,
      Machine
    })
  }
])

/**
 * Controller used in the machine reservation page (for logged users who have completed the training and admins).
 * This controller workflow is pretty similar to the trainings reservation controller.
 */

Application.Controllers.controller('ReserveMachineController', ['$scope', '$stateParams', '_t', 'moment', 'Auth', '$timeout', 'Member', 'Availability', 'plansPromise', 'groupsPromise', 'machinePromise', 'settingsPromise', 'uiCalendarConfig', 'CalendarConfig',
  function ($scope, $stateParams, _t, moment, Auth, $timeout, Member, Availability, plansPromise, groupsPromise, machinePromise, settingsPromise, uiCalendarConfig, CalendarConfig) {
  /* PRIVATE STATIC CONSTANTS */

    // Slot free to be booked
    const FREE_SLOT_BORDER_COLOR = '<%= AvailabilityHelper::MACHINE_COLOR %>'

    // Slot already booked by another user
    const UNAVAILABLE_SLOT_BORDER_COLOR = '<%= AvailabilityHelper::MACHINE_IS_RESERVED_BY_USER %>'

    // Slot already booked by the current user
    const BOOKED_SLOT_BORDER_COLOR = '<%= AvailabilityHelper::IS_RESERVED_BY_CURRENT_USER %>'

    /* PUBLIC SCOPE */

    // bind the machine availabilities with full-Calendar events
    $scope.eventSources = []

    // indicates the state of the current view : calendar or plans information
    $scope.plansAreShown = false

    // will store the user's plan if he choosed to buy one
    $scope.selectedPlan = null

    // the moment when the plan selection changed for the last time, used to trigger changes in the cart
    $scope.planSelectionTime = null

    // mapping of fullCalendar events.
    $scope.events = {
      reserved: [], // Slots that the user wants to book
      modifiable: null, // Slot that the user wants to change
      placable: null, // Destination slot for the change
      paid: [], // Slots that were just booked by the user (transaction ok)
      moved: null // Slots that were just moved by the user (change done) -> {newSlot:* oldSlot: *}
    }

    // the moment when the slot selection changed for the last time, used to trigger changes in the cart
    $scope.selectionTime = null

    // the last clicked event in the calender
    $scope.selectedEvent = null

    // the application global settings
    $scope.settings = settingsPromise

    // list of plans, classified by group
    $scope.plansClassifiedByGroup = []
    for (let group of Array.from(groupsPromise)) {
      const groupObj = { id: group.id, name: group.name, plans: [] }
      for (let plan of Array.from(plansPromise)) {
        if (plan.group_id === group.id) { groupObj.plans.push(plan) }
      }
      $scope.plansClassifiedByGroup.push(groupObj)
    }

    // the user to deal with, ie. the current user for non-admins
    $scope.ctrl =
    { member: {} }

    // current machine to reserve
    $scope.machine = machinePromise

    // fullCalendar (v2) configuration
    $scope.calendarConfig = CalendarConfig({
      minTime: moment.duration(moment(settingsPromise.booking_window_start).format('HH:mm:ss')),
      maxTime: moment.duration(moment(settingsPromise.booking_window_end).format('HH:mm:ss')),
      eventClick (event, jsEvent, view) {
        return calendarEventClickCb(event, jsEvent, view)
      },
      eventRender (event, element, view) {
        return eventRenderCb(event, element)
      }
    })

    // Global config: message to the end user concerning the subscriptions rules
    $scope.subscriptionExplicationsAlert = settingsPromise.subscription_explications_alert

    // Global config: message to the end user concerning the machine bookings
    $scope.machineExplicationsAlert = settingsPromise.machine_explications_alert

    /**
     * Change the last selected slot's appearence to looks like 'added to cart'
     */
    $scope.markSlotAsAdded = function () {
      $scope.selectedEvent.backgroundColor = FREE_SLOT_BORDER_COLOR
      $scope.selectedEvent.title = _t('i_reserve')
      return updateCalendar()
    }

    /**
     * Change the last selected slot's appearence to looks like 'never added to cart'
     */
    $scope.markSlotAsRemoved = function (slot) {
      slot.backgroundColor = 'white'
      slot.borderColor = FREE_SLOT_BORDER_COLOR
      slot.title = ''
      slot.isValid = false
      slot.id = null
      slot.is_reserved = false
      slot.can_modify = false
      slot.offered = false
      return updateCalendar()
    }

    /**
     * Callback when a slot was successfully cancelled. Reset the slot style as 'ready to book'
     */
    $scope.slotCancelled = function () { $scope.markSlotAsRemoved($scope.selectedEvent) }

    /**
     * Change the last selected slot's appearence to looks like 'currently looking for a new destination to exchange'
     */
    $scope.markSlotAsModifying = function () {
      $scope.selectedEvent.backgroundColor = '#eee'
      $scope.selectedEvent.title = _t('i_change')
      return updateCalendar()
    }

    /**
     * Change the last selected slot's appearence to looks like 'the slot being exchanged will take this place'
     */
    $scope.changeModifyMachineSlot = function () {
      if ($scope.events.placable) {
        $scope.events.placable.backgroundColor = 'white'
        $scope.events.placable.title = ''
      }
      if (!$scope.events.placable || ($scope.events.placable._id !== $scope.selectedEvent._id)) {
        $scope.selectedEvent.backgroundColor = '#bbb'
        $scope.selectedEvent.title = _t('i_shift')
      }
      return updateCalendar()
    }

    /**
     * When modifying an already booked reservation, callback when the modification was successfully done.
     */
    $scope.modifyMachineSlot = function () {
      $scope.events.placable.title = $scope.currentUser.role !== 'admin' ? _t('i_ve_reserved') : _t('not_available')
      $scope.events.placable.backgroundColor = 'white'
      $scope.events.placable.borderColor = $scope.events.modifiable.borderColor
      $scope.events.placable.id = $scope.events.modifiable.id
      $scope.events.placable.is_reserved = true
      $scope.events.placable.can_modify = true

      $scope.events.modifiable.backgroundColor = 'white'
      $scope.events.modifiable.title = ''
      $scope.events.modifiable.borderColor = FREE_SLOT_BORDER_COLOR
      $scope.events.modifiable.id = null
      $scope.events.modifiable.is_reserved = false
      $scope.events.modifiable.can_modify = false

      return updateCalendar()
    }

    /**
     * Cancel the current booking modification, reseting the whole process
     */
    $scope.cancelModifyMachineSlot = function () {
      if ($scope.events.placable) {
        $scope.events.placable.backgroundColor = 'white'
        $scope.events.placable.title = ''
      }
      $scope.events.modifiable.title = $scope.currentUser.role !== 'admin' ? _t('i_ve_reserved') : _t('not_available')
      $scope.events.modifiable.backgroundColor = 'white'

      return updateCalendar()
    }

    /**
     * Callback to deal with the reservations of the user selected in the dropdown list instead of the current user's
     * reservations. (admins only)
     */
    $scope.updateMember = function () {
      $scope.plansAreShown = false
      $scope.selectedPlan = null
      Member.get({ id: $scope.ctrl.member.id }, function (member) { $scope.ctrl.member = member })
    }

    /**
     * Changes the user current view from the plan subsription screen to the machine reservation agenda
     * @param e {Object} see https://docs.angularjs.org/guide/expression#-event-
     */
    $scope.doNotSubscribePlan = function (e) {
      e.preventDefault()
      $scope.plansAreShown = false
      $scope.selectPlan($scope.selectedPlan)
      return $scope.planSelectionTime = new Date()
    }

    /**
     * Switch the user's view from the reservation agenda to the plan subscription
     */
    $scope.showPlans = function () { $scope.plansAreShown = true }

    /**
     * Add the provided plan to the current shopping cart
     * @param plan {Object} the plan to subscribe
     */
    $scope.selectPlan = function (plan) {
    // toggle selected plan
      if ($scope.selectedPlan !== plan) {
        $scope.selectedPlan = plan
      } else {
        $scope.selectedPlan = null
      }
      return $scope.planSelectionTime = new Date()
    }

    /**
     * Once the reservation is booked (payment process successfully completed), change the event style
     * in fullCalendar, update the user's subscription and free-credits if needed
     * @param reservation {Object}
     */
    $scope.afterPayment = function (reservation) {
      angular.forEach($scope.events.reserved, function (machineSlot, key) {
        machineSlot.is_reserved = true
        machineSlot.can_modify = true
        if ($scope.currentUser.role !== 'admin') {
          machineSlot.title = _t('i_ve_reserved')
          machineSlot.borderColor = BOOKED_SLOT_BORDER_COLOR
          updateMachineSlot(machineSlot, reservation, $scope.currentUser)
        } else {
          machineSlot.title = _t('not_available')
          machineSlot.borderColor = UNAVAILABLE_SLOT_BORDER_COLOR
          updateMachineSlot(machineSlot, reservation, $scope.ctrl.member)
        }
        return machineSlot.backgroundColor = 'white'
      })

      if ($scope.selectedPlan) {
        $scope.ctrl.member.subscribed_plan = angular.copy($scope.selectedPlan)
        Auth._currentUser.subscribed_plan = angular.copy($scope.selectedPlan)
        $scope.plansAreShown = false
        $scope.selectedPlan = null
      }

      return refetchCalendar()
    }

    /**
     * To use as callback in Array.prototype.filter to get only enabled plans
     */
    $scope.filterDisabledPlans = function (plan) { return !plan.disabled }

    /* PRIVATE SCOPE */

    /**
     * Kind of constructor: these actions will be realized first when the controller is loaded
     */
    const initialize = function () {
      Availability.machine({ machineId: $stateParams.id }, function (availabilities) {
        $scope.eventSources.push({
          events: availabilities,
          textColor: 'black'
        })
      })

      if ($scope.currentUser.role !== 'admin') {
        return $scope.ctrl.member = $scope.currentUser
      }
    }

    /**
     * Triggered when the user click on a reservation slot in the agenda.
     * Defines the behavior to adopt depending on the slot status (already booked, free, ready to be reserved ...),
     * the user's subscription (current or about to be took) and the time (the user cannot modify a booked reservation
     * if it's too late).
     */
    var calendarEventClickCb = function (event, jsEvent, view) {
      $scope.selectedEvent = event
      return $scope.selectionTime = new Date()
    }

    /**
     * Triggered when fullCalendar tries to graphicaly render an event block.
     * Append the event tag into the block, just after the event title.
     * @see http://fullcalendar.io/docs/event_rendering/eventRender/
     */
    var eventRenderCb = function (event, element) {
      if (($scope.currentUser.role === 'admin') && (event.tags.length > 0)) {
        let html = ''
        for (let tag of Array.from(event.tags)) {
          html += `<span class='label label-success text-white' title='${tag.name}'>${tag.name}</span>`
        }
        element.find('.fc-time').append(html)
      }
    }

    /**
     * After payment, update the id of the newly reserved slot with the id returned by the server.
     * This will allow the user to modify the reservation he just booked. The associated user will also be registered
     * with the slot.
     * @param slot {Object}
     * @param reservation {Object}
     * @param user {Object} user associated with the slot
     */
    var updateMachineSlot = function (slot, reservation, user) {
      angular.forEach(reservation.slots, function (s) {
        if (slot.start.isSame(s.start_at)) {
          slot.id = s.id
          return slot.user = user
        }
      })
    }

    /**
     * Update the calendar's display to render the new attributes of the events
     */
    var updateCalendar = function () { uiCalendarConfig.calendars.calendar.fullCalendar('rerenderEvents') }

    /**
     * Asynchronously fetch the events from the API and refresh the calendar's view with these new events
     */
    var refetchCalendar = function () {
      $timeout(function () {
        uiCalendarConfig.calendars.calendar.fullCalendar('refetchEvents')
        return uiCalendarConfig.calendars.calendar.fullCalendar('rerenderEvents')
      })
    }

    // !!! MUST BE CALLED AT THE END of the controller
    return initialize()
  }
])