import { Observable } from 'rxjs/Rx';

import { Logger } from '@nsalaun/ng-logger';
import { NgbModal } from '@ng-bootstrap/ng-bootstrap';
import { ToastrService } from 'ngx-toastr';

import { ScheduleService } from './schedule.service';
import { Schedule } from './schedule';

var scheduleFormTmpl   = require('./schedule.form.tmpl.html'),
    scheduleDeleteTmpl = require('./schedule.delete.tmpl.html');

export class ScheduleComponent {
    $modal: any;
    accountId: number;
    operations = [];

    constructor(
        private toastrService: ToastrService,
        private scheduleService: ScheduleService,
        private logger: Logger,
    ) {}

    $onInit() {
        // Load operations on controller initialization.
        this.load();
    }

    /*
     * Add a new operation at the beginning of th array.
     */
    add() {
        var schedule = new Schedule();
        schedule.account_id = this.accountId;

        return this.modify(schedule);
    };

    /*
     * Load operations.
     */
    load() {
        return this.scheduleService.query(this.accountId)
            .subscribe((schedules: Schedule[]) => {
                this.operations = schedules;
            }, (reason) => {
                this.logger.log("Got error", reason);
            }
        );
    };

    /*
     * Save operation.
     */
    save(operation: Schedule) {
        let subscription: Observable<Schedule>;

        if(operation.id) {
            this.logger.log("updating schedule", operation);
            subscription = this.scheduleService.update(operation);
        } else {
            this.logger.log("creating schedule", operation);
            subscription = this.scheduleService.create(operation);
        }

        return subscription.subscribe((operation: Schedule) => {
            this.toastrService.success('Scheduled operation #' + operation.id + ' saved.');

            this.load();

            return operation;
        }, (result) => {
            this.toastrService.error(
                'Error while saving scheduled operation: ' + result.message
            );
        });
    };

    /*
     * Delete an operation and return a promise.
     */
    confirmDelete(operation: Schedule) {
        var title = "Delete operation #" + operation.id;

        this.$modal({
            templateUrl: scheduleDeleteTmpl,
            controller: function($scope, title, operation, $delete) {
                $scope.title = title;
                $scope.operation = operation;
                $scope.$delete = () => {
                    $scope.$hide();
                    $delete($scope.operation);
                };
            },
            locals: {
                title: title,
                operation: operation,
                $delete: (operation) => {
                    this.delete(operation);
                }
            }
        });
    };

    /*
     * Delete operation.
     */
    delete(operation: Schedule) {
        var id = operation.id;

        return this.scheduleService.delete(operation).subscribe(() => {
            this.toastrService.success('Scheduled operation #' + id + ' deleted.');

            this.load();

            return operation;
        }, (result) => {
            this.toastrService.error(
                'An error occurred while trying to delete scheduled operation #' +
                id + ':<br />' + result
            );
        });
    };

    /*
     * Open the popup to modify the operation, save it on confirm.
     * @returns a promise.
     */
    modify(operation: Schedule) {
        // FIXME Alexis Lahouze 2017-06-15 i18n
        var title = "Operation";

        if (operation.id) {
            title = title + " #" + operation.id;
        }

        this.$modal({
            templateUrl: scheduleFormTmpl,
            controller: function($scope, title, operation, $save) {
                $scope.title = title;
                $scope.operation = operation;
                $scope.$save = () => {
                    $scope.$hide();
                    $save($scope.operation);
                };
            },
            locals: {
                title: title,
                operation: operation,
                $save: (operation) => {
                    this.save(operation);
                }
            }
        });
    };
};