/*
    This file is part of Accountant.

    Accountant is free software: you can redistribute it and/or modify
    it under the terms of the GNU Affero General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    Foobar is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU Affero General Public License for more details.

    You should have received a copy of the GNU Affero General Public License
    along with Accountant.  If not, see <http://www.gnu.org/licenses/>.
 */
var SchedulerController = function($scope, $http, $rootScope, $filter) {
    // Operations store and selection
    $scope.operations = [];
    $scope.selectedOperation = null;

    $scope.account = null;

    // Placeholder for saved value to cancel entry edition
    $scope.savedOperation = null;

    $scope.loadOperations = function(account) {
      // Clean up selected entry.
      $scope.selectedOperation = null;
      $scope.savedOperation = null;

      if(account) {
        $scope.account = account;

        $http.get("/api/scheduled_operations/" + account.id).success($scope.loadOperations_success);
      } else {
        $scope.loadOperations_success(null);
      }
    };

    $scope.loadOperations_success = function(data) {
        var operations = [{
          id: null,
          start_date: null,
          stop_date: null,
          day: null,
          frequency: null,
          label: null,
          account_id: null,
          category: null,
          state: "edit"
        }];

        if(data) {
          operations = operations.concat(angular.fromJson(data));
        }

        $scope.operations = operations;

        $scope.$emit("operationsLoadedEvent", {operations: operations});
    };

    $scope.iconSaveClass = function(operation) {
      if($scope.isNew(operation)) {
        return "icon-plus";
      } else if ($scope.isEditing(operation)) {
        return "icon-ok";
      }
    };

    $scope.iconCancelClass = function(operation) {
      if($scope.isNew(operation)) {
        return "icon-remove";
      } else if ($scope.isEditing(operation)) {
        return "icon-ban-circle";
      }
    };

    $scope.isNew = function(operation) {
      return !operation.id;
    };

    // Returns true if the entry is in editing state.
    $scope.isEditing = function(operation) {
      return operation.state === 'edit';
    };

    $scope.isDisplaying = function(operation) {
      return operation.id && (!operation.state || operation.state === 'display');
    };

    $scope.saveOperation = function(operation) {
      if(!operation.account_id) {
        operation.account_id = $scope.account.id;
      }

      // prepare the Ajax xall to save the sceduled operation.
      var type;
      var url = "/api/scheduled_operations";

      if(!$scope.isNew(operation)) {
        url += "/" + operation.id;
      }

      $http.put(url, angular.toJson(operation)).success(function(data) {
        $.pnotify({
            type: "success",
            title: "Save",
            text: data
        });

        $scope.$emit("operationSavedEvent", operation);
      });
    };

    $scope.editOperation = function(operation) {
        // Cancel previous editing.
        if($scope.selectedOperation) {
            $scope.cancelEditOperation($scope.selectedItem);
        }

        // Save current entry values.
        $scope.savedOperation = angular.copy(operation);
        $scope.selectedOperation = operation;

        // Enter edit state.
        operation.state='edit';
    };

    $scope.cancelEditOperation = function(operation) {
      if ($scope.isNew(operation)) {
        operation.id = null;
        operation.start_date = null;
        operation.stop_date = null;
        operation.day = null;
        operation.frequency = null;
        operation.label = null;
        operation.value = null;
        operation.category = null;
        operation.account_id = $scope.account.id;
      } else if ($scope.isEditing(operation)) {
        if($scope.savedOperation) {
          operation.id = $scope.savedOperation.id;
          operation.start_date = $scope.savedOperation.start_date;
          operation.stop_date = $scope.savedOperation.stop_date;
          operation.day = $scope.savedOperation.day;
          operation.frequency = $scope.savedOperation.frequency;
          operation.label = $scope.savedOperation.label;
          operation.value = $scope.savedOperation.value;
          operation.category = $scope.savedOperation.category;
          operation.account_id = $scope.savedOperation.account_id;
        }

        $scope.savedOperation = null;
        $scope.selectedOperation = null;

        operation.state = 'display';
      }
    };

    $scope.removeOperation = function(operation, modalScope) {
      // Cancel current editing.
      if (!$scope.isNew(operation)) {
        $http.delete("/api/scheduled_operations/" + operation.id).success(function (result) {
          $.pnotify({
              type: "success",
              title: "Delete",
              text: result
          });

          // Send the "entry removed" event.
          $scope.$emit("operationRemovedEvent", operation);

          $scope.closeModal(modalScope);
        }).error(function (data) {
          $.pnotify({
              type: "error",
              title: "Delete",
              text: data
          });

          $scope.closeModal(modalScope);
        });
      }
    };

    $scope.closeModal = function(modalScope) {
      // Close the modal dialog
      if(modalScope && modalScope.dismiss) {
        modalScope.dismiss();
      }
    };

    $rootScope.$on("accountsLoadedEvent", function(event, args){
        $scope.loadOperations(args.account);
    });
}