/* eslint-disable
    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
 * Full docs: https://github.com/decaffeinate/decaffeinate/blob/master/docs/suggestions.md
 */
Application.Directives.directive('cart', [ '$rootScope', '$uibModal', 'dialogs', 'growl', 'Auth', 'Price', 'Wallet', 'CustomAsset', 'Slot', 'helpers', '_t',
  function ($rootScope, $uibModal, dialogs, growl, Auth, Price, Wallet, CustomAsset, Slot, helpers, _t) {
    return ({
      restrict: 'E',
      scope: {
        slot: '=',
        slotSelectionTime: '=',
        events: '=',
        user: '=',
        modePlans: '=',
        plan: '=',
        planSelectionTime: '=',
        settings: '=',
        onSlotAddedToCart: '=',
        onSlotRemovedFromCart: '=',
        onSlotStartToModify: '=',
        onSlotModifyDestination: '=',
        onSlotModifySuccess: '=',
        onSlotModifyCancel: '=',
        onSlotModifyUnselect: '=',
        onSlotCancelSuccess: '=',
        afterPayment: '=',
        reservableId: '@',
        reservableType: '@',
        reservableName: '@',
        limitToOneSlot: '@'
      },
      templateUrl: '<%= asset_path "shared/_cart.html" %>',
      link ($scope, element, attributes) {
      // will store the user's plan if he choosed to buy one
        $scope.selectedPlan = null;

        // total amount of the bill to pay
        $scope.amountTotal = 0;

        // total amount of the elements in the cart, without considering any coupon
        $scope.totalNoCoupon = 0;

        // once the cart was paid, retain the total amount paid by the customer
        $scope.amountPaid = 0;

        // Discount coupon to apply to the basket, if any
        $scope.coupon = { applied: null };

        // Global config: is the user authorized to change his bookings slots?
        $scope.enableBookingMove = ($scope.settings.booking_move_enable === 'true');

        // Global config: delay in hours before a booking while changing the booking slot is forbidden
        $scope.moveBookingDelay = parseInt($scope.settings.booking_move_delay);

        // Global config: is the user authorized to cancel his bookings?
        $scope.enableBookingCancel = ($scope.settings.booking_cancel_enable === 'true');

        // Global config: delay in hours before a booking while the cancellation is forbidden
        $scope.cancelBookingDelay = parseInt($scope.settings.booking_cancel_delay);

        /**
         * Add the provided slot to the shopping cart (state transition from free to 'about to be reserved')
         * and increment the total amount of the cart if needed.
         * @param slot {Object} fullCalendar event object
         */
        $scope.validateSlot = function (slot) {
          slot.isValid = true;
          return updateCartPrice();
        };

        /**
         * Remove the provided slot from the shopping cart (state transition from 'about to be reserved' to free)
         * and decrement the total amount of the cart if needed.
         * @param slot {Object} fullCalendar event object
         * @param index {number} index of the slot in the reservation array
         * @param [event] {Object} see https://docs.angularjs.org/guide/expression#-event-
         */
        $scope.removeSlot = function (slot, index, event) {
          if (event) { event.preventDefault(); }
          $scope.events.reserved.splice(index, 1);
          // if is was the last slot, we remove any plan from the cart
          if ($scope.events.reserved.length === 0) {
            $scope.selectedPlan = null;
            $scope.plan = null;
            $scope.modePlans = false;
          }
          if (typeof $scope.onSlotRemovedFromCart === 'function') { $scope.onSlotRemovedFromCart(slot); }
          return updateCartPrice();
        };

        /**
         * Checks that every selected slots were added to the shopping cart. Ie. will return false if
         * any checked slot was not validated by the user.
         */
        $scope.isSlotsValid = function () {
          let isValid = true;
          angular.forEach($scope.events.reserved, function (m) {
            if (!m.isValid) { return isValid = false; }
          });
          return isValid;
        };

        /**
         * Switch the user's view from the reservation agenda to the plan subscription
         */
        $scope.showPlans = function () {
          // first, we ensure that a user was selected (admin) or logged (member)
          const isSelectedUser = Object.keys($scope.user).length > 0;
          // all slots are in future
          const areFutureSlots = _.every($scope.events.reserved, function(s) {
            return s.start.isAfter();
          });
          if (isSelectedUser && areFutureSlots) {
            return $scope.modePlans = true;
          } else if (!isSelectedUser){
          // otherwise we alert, this error musn't occur when the current user hasn't the admin role
            return growl.error(_t('app.shared.cart.please_select_a_member_first'));
          } else if (!areFutureSlots){
            return growl.error(_t('app.shared.cart.unable_to_select_plan_if_slots_in_the_past'));
          }
        };

        /**
         * Validates the shopping chart and redirect the user to the payment step
         */
        $scope.payCart = function () {
        // first, we check that a user was selected
          if (Object.keys($scope.user).length > 0) {
            const reservation = mkReservation($scope.user, $scope.events.reserved, $scope.selectedPlan);

            return Wallet.getWalletByUser({ user_id: $scope.user.id }, function (wallet) {
              const amountToPay = helpers.getAmountToPay($scope.amountTotal, wallet.amount);
              if (!$scope.isAdmin() && (amountToPay > 0)) {
                if ($rootScope.fablabWithoutOnlinePayment) {
                  growl.error(_t('app.shared.cart.online_payment_disabled'));
                } else {
                  return payByStripe(reservation);
                }
              } else {
                if ($scope.isAdmin() || (amountToPay === 0)) {
                  return payOnSite(reservation);
                }
              }
            });
          } else {
          // otherwise we alert, this error musn't occur when the current user is not admin
            return growl.error(_t('app.shared.cart.please_select_a_member_first'));
          }
        };

        /**
         * When modifying an already booked reservation, confirm the modification.
         */
        $scope.modifySlot = function () {
          Slot.update({ id: $scope.events.modifiable.id }, {
            slot: {
              start_at: $scope.events.placable.start,
              end_at: $scope.events.placable.end,
              availability_id: $scope.events.placable.availability_id
            }
          }
          , function () { // success
            // -> run the callback
            if (typeof $scope.onSlotModifySuccess === 'function') { $scope.onSlotModifySuccess(); }
            // -> set the events as successfully moved (to display a summary)
            $scope.events.moved = {
              newSlot: $scope.events.placable,
              oldSlot: $scope.events.modifiable
            };
            // -> reset the 'moving' status
            $scope.events.placable = null;
            return $scope.events.modifiable = null;
          }
          , function (err) { // failure
            growl.error(_t('app.shared.cart.unable_to_change_the_reservation'));
            return console.error(err);
          });
        };

        /**
         * Cancel the current booking modification, reseting the whole process
         * @param event {Object} see https://docs.angularjs.org/guide/expression#-event-
         */
        $scope.cancelModifySlot = function (event) {
          if (event) { event.preventDefault(); }
          if (typeof $scope.onSlotModifyCancel === 'function') { $scope.onSlotModifyCancel(); }
          $scope.events.placable = null;
          return $scope.events.modifiable = null;
        };

        /**
         * When modifying an already booked reservation, cancel the choice of the new slot
         * @param e {Object} see https://docs.angularjs.org/guide/expression#-event-
         */
        $scope.removeSlotToPlace = function (e) {
          e.preventDefault();
          if (typeof $scope.onSlotModifyUnselect === 'function') { $scope.onSlotModifyUnselect(); }
          return $scope.events.placable = null;
        };

        /**
         * Checks if $scope.events.modifiable and $scope.events.placable have tag incompatibilities
         * @returns {boolean} true in case of incompatibility
         */
        $scope.tagMissmatch = function () {
          if ($scope.events.placable.tag_ids.length === 0) { return false; }
          for (let tag of Array.from($scope.events.modifiable.tags)) {
            if (!Array.from($scope.events.placable.tag_ids).includes(tag.id)) {
              return true;
            }
          }
          return false;
        };

        /**
         * Check if the currently logged user has teh 'admin' role?
         * @returns {boolean}
         */
        $scope.isAdmin = function () { return $rootScope.currentUser && ($rootScope.currentUser.role === 'admin'); };

        /* PRIVATE SCOPE */

        /**
         * Kind of constructor: these actions will be realized first when the directive is loaded
         */
        const initialize = function () {
          // What the bound slot
          $scope.$watch('slotSelectionTime', function (newValue, oldValue) {
            if (newValue !== oldValue) {
              return slotSelectionChanged();
            }
          });
          $scope.$watch('user', function (newValue, oldValue) {
            if (newValue !== oldValue) {
              resetCartState();
              return updateCartPrice();
            }
          });
          $scope.$watch('planSelectionTime', function (newValue, oldValue) {
            if (newValue !== oldValue) {
              return planSelectionChanged();
            }
          });
          // watch when a coupon is applied to re-compute the total price
          $scope.$watch('coupon.applied', function (newValue, oldValue) {
            if (newValue !== oldValue) {
              return updateCartPrice();
            }
          });
        };

        /**
         * Callback triggered when the selected slot changed
         */
        var slotSelectionChanged = function () {
          if ($scope.slot) {
            if (!$scope.slot.is_reserved && !$scope.events.modifiable && !$scope.slot.is_completed) {
              // slot is not reserved and we are not currently modifying a slot
              // -> can be added to cart or removed if already present
              const index = $scope.events.reserved.indexOf($scope.slot);
              if (index === -1) {
                if (($scope.limitToOneSlot === 'true') && $scope.events.reserved[0]) {
                // if we limit the number of slots in the cart to 1, and there is already
                // a slot in the cart, we remove it before adding the new one
                  $scope.removeSlot($scope.events.reserved[0], 0);
                }
                // slot is not in the cart, so we add it
                $scope.events.reserved.push($scope.slot);
                if (typeof $scope.onSlotAddedToCart === 'function') { $scope.onSlotAddedToCart(); }
              } else {
                // slot is in the cart, remove it
                $scope.removeSlot($scope.slot, index);
              }
              // in every cases, because a new reservation has started, we reset the cart content
              resetCartState();
              // finally, we update the prices
              return updateCartPrice();
            } else if (!$scope.slot.is_reserved && !$scope.slot.is_completed && $scope.events.modifiable) {
              // slot is not reserved but we are currently modifying a slot
              // -> we request the calender to change the rendering
              if (typeof $scope.onSlotModifyUnselect === 'function') { $scope.onSlotModifyUnselect(); }
              // -> then, we re-affect the destination slot
              if (!$scope.events.placable || ($scope.events.placable._id !== $scope.slot._id)) {
                return $scope.events.placable = $scope.slot;
              } else {
                return $scope.events.placable = null;
              }
            } else if ($scope.slot.is_reserved && $scope.events.modifiable && ($scope.slot.is_reserved._id === $scope.events.modifiable._id)) {
              // slot is reserved and currently modified
              // -> we cancel the modification
              return $scope.cancelModifySlot();
            } else if ($scope.slot.is_reserved && (slotCanBeModified($scope.slot) || slotCanBeCanceled($scope.slot)) && !$scope.events.modifiable && ($scope.events.reserved.length === 0)) {
              // slot is reserved and is ok to be modified or cancelled
              // but we are not currently running a modification or having any slots in the cart
              // -> first the affect the modification/cancellation rights attributes to the current slot
              resetCartState();
              $scope.slot.movable = slotCanBeModified($scope.slot);
              $scope.slot.cancelable = slotCanBeCanceled($scope.slot);
              // -> then, we open a dialog to ask to the user to choose an action
              return dialogs.confirm({
                templateUrl: '<%= asset_path "shared/confirm_modify_slot_modal.html" %>',
                resolve: {
                  object () { return $scope.slot; }
                }
              }
              , function (type) {
              // the user has choosen an action, so we proceed
                if (type === 'move') {
                  if (typeof $scope.onSlotStartToModify === 'function') { $scope.onSlotStartToModify(); }
                  return $scope.events.modifiable = $scope.slot;
                } else if (type === 'cancel') {
                  return dialogs.confirm(
                    {
                      resolve: {
                        object () {
                          return {
                            title: _t('app.shared.cart.confirmation_required'),
                            msg: _t('app.shared.cart.do_you_really_want_to_cancel_this_reservation')
                          };
                        }
                      }
                    },
                    function () { // cancel confirmed
                      Slot.cancel({ id: $scope.slot.id }, function () { // successfully canceled
                        growl.success(_t('app.shared.cart.reservation_was_cancelled_successfully'));
                        if (typeof $scope.onSlotCancelSuccess === 'function') { return $scope.onSlotCancelSuccess(); }
                      }
                      , function () { // error while canceling
                        growl.error(_t('app.shared.cart.cancellation_failed'));
                      });
                    }
                  );
                }
              });
            }
          }
        };

        /**
         * Reset the parameters that may lead to a wrong price but leave the content (events added to cart)
         */
        var resetCartState = function () {
          $scope.selectedPlan = null;
          $scope.coupon.applied = null;
          $scope.events.moved = null;
          $scope.events.paid = [];
          $scope.events.modifiable = null;
          return $scope.events.placable = null;
        };

        /**
         * Determines if the provided booked slot is able to be modified by the user.
         * @param slot {Object} fullCalendar event object
         */
        var slotCanBeModified = function (slot) {
          if ($scope.isAdmin()) { return true; }
          const slotStart = moment(slot.start);
          const now = moment();
          return (slot.can_modify && $scope.enableBookingMove && (slotStart.diff(now, 'hours') >= $scope.moveBookingDelay));
        };

        /**
         * Determines if the provided booked slot is able to be canceled by the user.
         * @param slot {Object} fullCalendar event object
         */
        var slotCanBeCanceled = function (slot) {
          if ($scope.isAdmin()) { return true; }
          const slotStart = moment(slot.start);
          const now = moment();
          return (slot.can_modify && $scope.enableBookingCancel && (slotStart.diff(now, 'hours') >= $scope.cancelBookingDelay));
        };

        /**
         * Callback triggered when the selected slot changed
         */
        var planSelectionChanged = function () {
          if (Auth.isAuthenticated()) {
            if ($scope.selectedPlan !== $scope.plan) {
              $scope.selectedPlan = $scope.plan;
            } else {
              $scope.selectedPlan = null;
            }
            return updateCartPrice();
          } else {
            return $rootScope.login(null, function () {
              $scope.selectedPlan = $scope.plan;
              return updateCartPrice();
            });
          }
        };

        /**
         * Update the total price of the current selection/reservation
         */
        var updateCartPrice = function () {
          if (Object.keys($scope.user).length > 0) {
            const r = mkReservation($scope.user, $scope.events.reserved, $scope.selectedPlan);
            return Price.compute(mkRequestParams(r, $scope.coupon.applied), function (res) {
              $scope.amountTotal = res.price;
              $scope.totalNoCoupon = res.price_without_coupon;
              return setSlotsDetails(res.details);
            });
          } else {
            // otherwise we alert, this error musn't occur when the current user is not admin
            growl.warning(_t('app.shared.cart.please_select_a_member_first'));
            return $scope.amountTotal = null;
          }
        };

        var setSlotsDetails = function (details) {
          angular.forEach($scope.events.reserved, function (slot) {
            angular.forEach(details.slots, function (s) {
              if (moment(s.start_at).isSame(slot.start)) {
                slot.promo = s.promo;
                return slot.price = s.price;
              }
            });
          });
        };

        /**
         * Format the parameters expected by /api/prices/compute or /api/reservations and return the resulting object
         * @param reservation {Object} as returned by mkReservation()
         * @param coupon {Object} Coupon as returned from the API
         * @return {{reservation:Object, coupon_code:string}}
         */
        var mkRequestParams = function (reservation, coupon) {
          return {
            reservation,
            coupon_code: ((coupon ? coupon.code : undefined))
          };
        };

        /**
         * Create an hash map implementing the Reservation specs
         * @param member {Object} User as retrieved from the API: current user / selected user if current is admin
         * @param slots {Array<Object>} Array of fullCalendar events: slots selected on the calendar
         * @param [plan] {Object} Plan as retrieved from the API: plan to buy with the current reservation
         * @return {{user_id:Number, reservable_id:Number, reservable_type:String, slots_attributes:Array<Object>, plan_id:Number|null}}
         */
        var mkReservation = function (member, slots, plan) {
          const reservation = {
            user_id: member.id,
            reservable_id: $scope.reservableId,
            reservable_type: $scope.reservableType,
            slots_attributes: [],
            plan_id: ((plan ? plan.id : undefined))
          };
          angular.forEach(slots, function (slot) {
            reservation.slots_attributes.push({
              start_at: slot.start,
              end_at: slot.end,
              availability_id: slot.availability_id,
              offered: slot.offered || false
            });
          });

          return reservation;
        };

        /**
         * Open a modal window that allows the user to process a credit card payment for his current shopping cart.
         */
        var payByStripe = function (reservation) {
          $uibModal.open({
            templateUrl: '<%= asset_path "stripe/payment_modal.html" %>',
            size: 'md',
            resolve: {
              reservation () {
                return reservation;
              },
              price () {
                return Price.compute(mkRequestParams(reservation, $scope.coupon.applied)).$promise;
              },
              wallet () {
                return Wallet.getWalletByUser({ user_id: reservation.user_id }).$promise;
              },
              cgv () {
                return CustomAsset.get({ name: 'cgv-file' }).$promise;
              },
              coupon () {
                return $scope.coupon.applied;
              },
              cartItems () {
                return mkRequestParams(reservation, $scope.coupon.applied);
              }
            },
            controller: ['$scope', '$uibModalInstance', '$state', 'reservation', 'price', 'cgv', 'Auth', 'Reservation', 'wallet', 'helpers', '$filter', 'coupon', 'cartItems',
              function ($scope, $uibModalInstance, $state, reservation, price, cgv, Auth, Reservation, wallet, helpers, $filter, coupon, cartItems) {
                // user wallet amount
                $scope.walletAmount = wallet.amount;

                // Price
                $scope.amount = helpers.getAmountToPay(price.price, wallet.amount);

                // Cart items
                $scope.cartItems = cartItems;

                // CGV
                $scope.cgv = cgv.custom_asset;

                // Reservation
                $scope.reservation = reservation;

                // Used in wallet info template to interpolate some translations
                $scope.numberFilter = $filter('number');

                /**
                 * Callback to handle the post-payment and reservation
                 */
                $scope.onPaymentSuccess = function (response) {
                  $uibModalInstance.close(response);
                };
              }
            ]
          }).result['finally'](null).then(function (reservation) { afterPayment(reservation); });
        };
        /**
         * Open a modal window that allows the user to process a local payment for his current shopping cart (admin only).
         */
        var payOnSite = function (reservation) {
          $uibModal.open({
            templateUrl: '<%= asset_path "shared/valid_reservation_modal.html" %>',
            size: 'sm',
            resolve: {
              reservation () {
                return reservation;
              },
              price () {
                return Price.compute(mkRequestParams(reservation, $scope.coupon.applied)).$promise;
              },
              wallet () {
                return Wallet.getWalletByUser({ user_id: reservation.user_id }).$promise;
              },
              coupon () {
                return $scope.coupon.applied;
              }
            },
            controller: ['$scope', '$uibModalInstance', '$state', 'reservation', 'price', 'Auth', 'Reservation', 'wallet', 'helpers', '$filter', 'coupon',
              function ($scope, $uibModalInstance, $state, reservation, price, Auth, Reservation, wallet, helpers, $filter, coupon) {
              // user wallet amount
                $scope.walletAmount = wallet.amount;

                // Global price (total of all items)
                $scope.price = price.price;

                // Price to pay (wallet deducted)
                $scope.amount = helpers.getAmountToPay(price.price, wallet.amount);

                // Reservation
                $scope.reservation = reservation;

                // Used in wallet info template to interpolate some translations
                $scope.numberFilter = $filter('number');

                // Button label
                if ($scope.amount > 0) {
                  $scope.validButtonName = _t('app.shared.cart.confirm_payment_of_html', { ROLE: $rootScope.currentUser.role, AMOUNT: $filter('currency')($scope.amount) });
                } else {
                  if ((price.price > 0) && ($scope.walletAmount === 0)) {
                    $scope.validButtonName = _t('app.shared.cart.confirm_payment_of_html', { ROLE: $rootScope.currentUser.role, AMOUNT: $filter('currency')(price.price) });
                  } else {
                    $scope.validButtonName = _t('app.shared.buttons.confirm');
                  }
                }

                /**
                 * Callback to process the local payment, triggered on button click
                 */
                $scope.ok = function () {
                  $scope.attempting = true;
                  return Reservation.save(mkRequestParams($scope.reservation, coupon), function (reservation) {
                    $uibModalInstance.close(reservation);
                    return $scope.attempting = true;
                  }
                  , function (response) {
                    $scope.alerts = [];
                    $scope.alerts.push({ msg: _t('app.shared.cart.a_problem_occurred_during_the_payment_process_please_try_again_later'), type: 'danger' });
                    return $scope.attempting = false;
                  });
                };
                $scope.cancel = function () { $uibModalInstance.dismiss('cancel'); };
              }
            ]
          }).result['finally'](null).then(function (reservation) { afterPayment(reservation); });
        };
        /**
         * Actions to run after the payment was successful
         */
        var afterPayment = function (reservation) {
          // we set the cart content as 'paid' to display a summary of the transaction
          $scope.events.paid = $scope.events.reserved;
          $scope.amountPaid = $scope.amountTotal;
          // we call the external callback if present
          if (typeof $scope.afterPayment === 'function') { $scope.afterPayment(reservation); }
          // we reset the coupon and the cart content and we unselect the slot
          $scope.events.reserved = [];
          $scope.coupon.applied = null;
          $scope.slot = null;
          return $scope.selectedPlan = null;
        };

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