// vim: set tw=80 ts=4 sw=4 sts=4:
/*
    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.

    Accountant 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/>.
 */
/* jshint node: true */
'use strict';

var moment     = require('moment');

var angular = require('angular');

var operationFormTmpl = require('./operation.form.tmpl.html');

var ngResource       = require('angular-resource'),
    ngMessages       = require('angular-messages'),
    ngUiNotification = require('angular-ui-notification'),
    ngBootbox        = require('ngbootbox'),
    ngStrap          = require('angular-strap');

// Note: ngBootbox seems to have no module.exports.
ngBootbox = 'ngBootbox';

var operationModule = angular.module('accountant.operations', [
    ngResource,
    ngMessages,
    ngUiNotification,
    ngBootbox,
    ngStrap
])

.config(function($resourceProvider) {
    // Keep trailing slashes to avoid redirect by flask..
    $resourceProvider.defaults.stripTrailingSlashes = false;
})

.factory('Operation', function($resource) {
    return $resource(
        '/api/operation/:id', {
            id: '@id'
        }
    );
})

/*
 * Controller for the operations.
 */
.controller('OperationController', function($rootScope, $scope, $routeParams,
    $ngBootbox, Notification, Operation) {

    var vm = this;

    // List of operations.
    vm.operations = [];

    /*
     * Add an empty operation.
     */
    vm.add = function() {
        var operation = new Operation({
            // eslint-disable-next-line camelcase
            account_id: $routeParams.accountId
        });

        vm.operations.splice(0, 0, operation);
    };

    /*
     * Load operations.
     */
    vm.load = function(begin, end) {
        vm.operations = Operation.query({
            // eslint-disable-next-line camelcase
            account_id: $routeParams.accountId,
            begin: begin.format('YYYY-MM-DD'),
            end: end.format('YYYY-MM-DD')
        });
    };

    /*
     * Cancel edition.
     */
    vm.cancelEdit = function(operation, rowform, $index) {
        if (operation.id) {
            rowform.$cancel();
        } else {
            vm.operations.splice($index, 1);
        }
    };

    /*
     * Toggle pointed indicator for an operation.
     */
    vm.togglePointed = function(operation, rowform) {
        operation.pointed = !operation.pointed;

        // Save operation if not editing it.
        if (!rowform.$visible) {
            vm.save(operation);
        }
    };

    /*
     * Toggle cancel indicator for an operation.
     */
    vm.toggleCanceled = function(operation) {
        operation.canceled = !operation.canceled;

        vm.save(operation);
    };

    /*
     * Save an operation and emit operationSavedEvent.
     */
    vm.save = function($data, $index) {
        // Check if $data is already a resource.
        var operation;

        if ($data.$save) {
            operation = $data;
        } else {
            operation = vm.operations[$index];
            operation = angular.merge(operation, $data);
        }

        operation.confirmed = true;

        return operation.$save().then(function(data) {
            Notification.success('Operation #' + data.id + ' saved.');

            $scope.$emit('operationSavedEvent', data);
        });
    };

    /*
     * Delete an operation and emit operationDeletedEvent.
     */
    vm.delete = function(operation, $index) {
        var id = operation.id;

        $ngBootbox.confirm(
            'Voulez-vous supprimer l\'opération \\\'' + operation.label + '\\\' ?',
            function(result) {
                if (result) {
                    operation.$delete().then(function() {
                        Notification.success('Operation #' + id + ' deleted.');

                        // Remove operation from array.
                        vm.operation.splice($index, 1);

                        $scope.$emit('operationDeletedEvent', operation);
                    });
                }
            }
        );
    };

    /*
     * Reload operations on rangeSelectedEvent.
     */
    vm.onRangeSelected = $rootScope.$on('rangeSelectedEvent', function(e, args) {
        vm.load(args.begin, args.end);
    });

    $rootScope.$on('$destroy', function() {
        vm.onRangeSelected = angular.noop;
    });

    vm.load(moment().date(1).year(2000), moment());
})

.directive('operationFormDialog', function($log, $ngBootbox) {
    return {
        restrict: 'A',
        scope: {
            operation: '=ngModel'
        },
        link: function(scope, element) {
            var title = 'Operation';

            if (scope.operation && scope.operation.id) {
                title = title + ' #' + scope.operation.id;
            }

            scope.form = {};

            element.on('click', function() {
                scope.data = {};
                angular.copy(scope.operation, scope.data);

                // Open dialog with form.
                $ngBootbox.customDialog({
                    scope: scope,
                    title: title,
                    templateUrl: operationFormTmpl,
                    onEscape: true,
                    buttons: {
                        save: {
                            label: 'Save',
                            className: 'btn-success',
                            callback: function() {
                                // Validate form
                                $log.log(scope.form);

                                // Save operation
                                $log.log(scope.operation);

                                // TODO Alexis Lahouze 2016-05-24 Save operation, handle return.
                                return false;
                            }
                        },
                        cancel: {
                            label: 'Cancel',
                            className: 'btn-default',
                            callback: true
                        }
                    }
                });
            });
        }
    };
});

module.exports = operationModule;