'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 = (content) ->
      if !content.id?
        $scope.alerts = []
        angular.forEach content, (v, k)->
          angular.forEach v, (err)->
            $scope.alerts.push
              msg: k+': '+err
              type: 'danger'
      else
        $state.go('app.public.machines_list')

    ##
    # Changes the current user's view, redirecting him to the machines list
    ##
    $scope.cancel = ->
      $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 = (v)->
      if v
        'fileinput-exists'
      else
        'fileinput-new'

    ##
    # This will create a single new empty entry into the machine attachements list.
    ##
    $scope.addFile = ->
      $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 = (file) ->
      index = $scope.machine.machine_files_attributes.indexOf(file)
      if file.id?
        file._destroy = true
      else
        $scope.machine.machine_files_attributes.splice(index, 1)



##
# Controller used in the public listing page, allowing everyone to see the list of machines
##
Application.Controllers.controller "machinesController", ["$scope", "$state", 'Machine', '$modal', ($scope, $state, Machine, $modal) ->

  ## Retrieve the list of machines
  $scope.machines = Machine.query()

  ##
  # Redirect the user to the machine details page
  ##
  $scope.showMachine = (machine) ->
    $state.go('app.public.machines_show', {id: machine.slug})
]



##
# Controller used in the machine creation page (admin)
##
Application.Controllers.controller "newMachineController", ["$scope", "$state", 'CSRF', ($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
  new MachinesController($scope, $state)
]



##
# Controller used in the machine edition page (admin)
##
Application.Controllers.controller "editMachineController", ["$scope", "$state", '$stateParams', 'Machine', 'CSRF', ($scope, $state, $stateParams, Machine, CSRF) ->
  CSRF.setMetaTags()

  ## 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 = Machine.get {id: $stateParams.id}
  , ->
    return
  , ->
    $state.go('app.public.machines_list')

  ## Using the MachinesController
  new MachinesController($scope, $state)
]



##
# Controller used in the machine details page (public)
##
Application.Controllers.controller "showMachineController", ['$scope', '$state', '$modal', '$stateParams', 'Machine', ($scope, $state, $modal, $stateParams, Machine) ->

  ## Retrieve the details for the machine id in the URL, if an error occurs redirect the user to the machines list
  $scope.machine = Machine.get {id: $stateParams.id}
  , ->
    return
  , ->
    $state.go('app.public.machines_list')

  ##
  # Callback to delete the current machine (admins only)
  ##
  $scope.delete = (machine) ->
    # check the permissions
    if $scope.currentUser.role isnt 'admin'
      console.error 'Unauthorized operation'
    else
      # delete the machine then redirect to the machines listing
      machine.$delete ->
        $state.go('app.public.machines_list')
]